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− | </style> | + | <div> |
− | <div> | + | <div class="box-dark"> |
− | <div class="box-dark">
| + | <!--titel der seite--> |
− | <!--titel der seite-->
| + | <h1 class="heading"> |
− | <h1 class="heading">
| + | H U M A N   P R A C T I C E S |
− | H U M A N   P R A C T I C E S
| + | </h1> |
− | </h1>
| + | <hr class="line"> |
− | <hr class="line">
| + | <img src="https://static.igem.org/mediawiki/2019/a/ac/T--Marburg--logo.svg" class="logo" alt="Syntex Logo"> |
− | <img src="https://static.igem.org/mediawiki/2019/a/ac/T--Marburg--logo.svg" class="logo" alt="Syntex Logo">
| + | </div> |
− | </div>
| + | <div style="margin-top: 11vh;"> |
− | <div style="margin-top: 11vh;">
| + | <h1 class="title">Human Practices</h1> |
− | <h1 class="title">Human Practices</h1>
| + | <section class="section"> |
− | <section class="section">
| + | <article> |
− | <article>
| + | <h1 class="title">Report on Genetic Engineering</h1> |
− | <h1 class="title">Report on Genetic Engineering</h1>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | Genetic engineering has been a hotly debated topic in politics as well as society in the past decades and
| + | |
− | still is today.
| + | |
− | Arguments like the nutrition of a growing world population due to a declining infant mortality rate or the
| + | |
− | loss of
| + | |
− | considerable areas of arable land due to erosion or pollution damage keep fueling the debate whether
| + | |
− | genetically modified
| + | |
− | organisms (GMO), especially crops, are needed to sustain the global demand for food. On the opposite, concerns
| + | |
− | have been raised
| + | |
− | concerning the potential adverse effects on human health and environmental safety. Besides the facts, part of
| + | |
− | the public debate
| + | |
− | is based around ethical questions and trust issues towards institutions and authorities. There have been
| + | |
− | studies and surveys
| + | |
− | carried out addressing many of these topics and additionally a diverse cluster of organisations and the media
| + | |
− | is bombarding the
| + | |
− | public with contrary statements. This report tries to give an overview on humanities relation to changing
| + | |
− | genetics, a brief
| + | |
− | summary of used methods, and gathers statements from scientists and authorities. It is meant as the
| + | |
− | motivational basis for this
| + | |
− | years Marburg iGEM team´s Public Engagement and Human Practice efforts.<br>
| + | |
− | <br>
| + | |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | <b>History of Genetic Modification</b><br> | + | Genetic engineering has been a hotly debated topic in politics as well as society in the past decades and |
− | Our ancestors had no conception of genetics but still were able to influence the genes of multiple
| + | still is today. |
− | organisms.
| + | Arguments like the nutrition of a growing world population due to a declining infant mortality rate or the |
− | It is a
| + | loss of |
− | process known to everybody called artificial selection or selective breeding. Those individuals with the
| + | considerable areas of arable land due to erosion or pollution damage keep fueling the debate whether |
− | most
| + | genetically modified |
− | desirable traits,
| + | organisms (GMO), especially crops, are needed to sustain the global demand for food. On the opposite, |
− | like the biggest and most delicious fruits or the highest loyalty, is chosen to propagate and produce
| + | concerns |
− | offspring. This process
| + | have been raised |
− | is repeated over several generations and the result is an organism with the selected traits. The dog,
| + | concerning the potential adverse effects on human health and environmental safety. Besides the facts, part |
− | existing
| + | of |
− | today in many
| + | the public debate |
− | #variations, is believed to be the organism our ancestors selectively bred first at around 32,000 years
| + | is based around ethical questions and trust issues towards institutions and authorities. There have been |
− | ago <a style="padding: 0"
| + | studies and surveys |
− | href="https://www.nytimes.com/2013/05/16/science/dogs-from-fearsome-predator-to-mans-best-friend.html">(Zimmer,
| + | carried out addressing many of these topics and additionally a diverse cluster of organisations and the |
− | 2013)</a>. And there are many more instances like corn which originates from a grass called teosinte with
| + | media |
− | very few kernels <a style="padding: 0"
| + | is bombarding the |
− | href="https://learn.genetics.utah.edu/content/evolution/corn/">(‘Evolution of Corn’,
| + | public with contrary statements. This report tries to give an overview on humanities relation to changing |
− | n.d.)</a>. However, this process is not considered GMO technology today. What we understand under genetic
| + | genetics, a brief |
− | modification today can be traced back to
| + | summary of used methods, and gathers statements from scientists and authorities. It is meant as the |
− | the mid 1900´s
| + | motivational basis for this |
− | when scientists discovered that genetic material can be transferred between different species
| + | years Marburg iGEM team´s Public Engagement and Human Practice efforts.<br> |
− | <a style="padding: 0" href="https://doi.org/10.1084/jem.79.2.137">(Avery, MacLeod, & McCarty, 1944)</a>,
| + | </p> |
− | the structure of genetic material was identified as a double helix <a style="padding: 0"
| + | </article> |
− | href="https://doi.org/10.1098/rspa.1954.0101">(Crick, Watson, & Bragg, 1954)</a>, the genetic code was
| + | </section> |
− | deciphered <a style="padding: 0" href="https://www.ncbi.nlm.nih.gov/pubmed/13938750">(Nirenberg, Matthaei,
| + | <hr> |
− | Jones, Martin, &
| + | <section class="section grid"> |
− | Barondes, 1963)</a> and finally a DNA recombinant technology was described <a style="padding: 0"
| + | <div class="sub" onclick="popup('bla')"> |
− | href="https://doi.org/10.1073/pnas.70.11.3240">(Cohen, Chang, Boyer, & Helling, 1973)</a>. Only a few
| + | <div class="sub-header"> |
− | decades after these
| + | <h1> |
− | ground-breaking discoveries were made, the first
| + | G M O<br> |
− | genetically modified (GM) plants were produced in 1983, which were antibiotic resistant tobacco and petunia
| + | R E P O R T |
− | <a style="padding: 0" href="https://www.ncbi.nlm.nih.gov/pubmed/7153688">(Bevan & Chilton, 1982; Fraley,
| + | </h1> |
− | 1983; Herrera‐Estrella
| + | <hr> |
− | et al., 1983)</a>.
| + | </div> |
− | Soon, the first GM plants were commercialized: in the
| + | <div class="sub-content"> |
− | early 1990´s China approved modified tobacco and in 1994 the United States Food and Drug Administration
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
− | (U.S.
| + | <b>History of Genetic Modification</b><br> |
− | FDA) approved
| + | Our ancestors had no conception of genetics but still were able to influence the genes of multiple |
− | the “FLAVR SAVR” tomato which was modified to have a longer shelf live by delaying ripening. Today numerous
| + | organisms. |
− | GM
| + | It is a |
− | plants exist
| + | process known to everybody called artificial selection or selective breeding. Those individuals with the |
− | and are in use, covering popular fruits like papaya, melon and apple, flowers like roses, feed plants like
| + | most |
− | sugar beet,
| + | desirable traits, |
− | vegetables like tomato, maize and potato and even cotton for clothes production
| + | like the biggest and most delicious fruits or the highest loyalty, is chosen to propagate and produce |
− | <a style="padding: 0" href="http://www.isaaa.org/gmapprovaldatabase/cropslist/default.asp">(‘GM Crops
| + | offspring. This process |
− | List—GM Approval
| + | is repeated over several generations and the result is an organism with the selected traits. The dog, |
− | Database | ISAAA.org’, n.d.)</a>.</p>
| + | existing |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | today in many |
− | <b>Current numbers on GM crops</b><br>
| + | #variations, is believed to be the organism our ancestors selectively bred first at around 32,000 years |
− | <i>World</i><br>As stated above, many GM crops are relevant for food production today, be it indirectly for
| + | ago <a style="padding: 0" |
− | feed in
| + | href="https://www.nytimes.com/2013/05/16/science/dogs-from-fearsome-predator-to-mans-best-friend.html">(Zimmer, |
− | production lines or directly as consumables. In 2018, 26 countries planted 191.7 million hectares worldwide
| + | 2013)</a>. And there are many more instances like corn which originates from a grass called teosinte |
− | with GM crops,
| + | with |
− | which is an increase of 1% from 2017´s worldwide planted area. Accordingly, since its first
| + | very few kernels <a style="padding: 0" href="https://learn.genetics.utah.edu/content/evolution/corn/">(‘Evolution of |
− | commercialization
| + | Corn’, |
− | in 1996 with
| + | n.d.)</a>. However, this process is not considered GMO technology today. What we understand under |
− | 1.7 million hectares planted, GM crop area increased by an approximate 113-fold. The accumulated area
| + | genetic |
− | planted
| + | modification today can be traced back to |
− | with GM crops
| + | the mid 1900´s |
− | from 1996 to 2018 was 2.5 billion hectares. This makes biotechnology the fastest adopted crop technology in
| + | when scientists discovered that genetic material can be transferred between different species |
− | the world. Of
| + | <a style="padding: 0" href="https://doi.org/10.1084/jem.79.2.137">(Avery, MacLeod, & McCarty, 1944)</a>, |
− | the 193 member nations of the United Nations Organisation (UNO) 42 nations plus the European Union (EU)
| + | the structure of genetic material was identified as a double helix <a style="padding: 0" |
− | adopted GM crops,
| + | href="https://doi.org/10.1098/rspa.1954.0101">(Crick, Watson, & Bragg, 1954)</a>, the genetic code was |
− | of which 26 countries (21 developing and 5 industrial) planted and 44 imported GM crops. The four major GM
| + | deciphered <a style="padding: 0" href="https://www.ncbi.nlm.nih.gov/pubmed/13938750">(Nirenberg, Matthaei, |
− | crops, namely
| + | Jones, Martin, & |
− | soybeans, maize, cotton and canola, occupied 99% of the GM crop area (Figure 1). GM crops share in total
| + | Barondes, 1963)</a> and finally a DNA recombinant technology was described <a style="padding: 0" |
− | crop
| + | href="https://doi.org/10.1073/pnas.70.11.3240">(Cohen, Chang, Boyer, & Helling, 1973)</a>. Only a few |
− | area was 78%
| + | decades after these |
− | for soybeans, 76% for cotton, 30% or maize and 29% for canola. 42% of the global GM crop area was planted
| + | ground-breaking discoveries were made, the first |
− | with
| + | genetically modified (GM) plants were produced in 1983, which were antibiotic resistant tobacco and |
− | stacked trait
| + | petunia |
− | crops tolerant to various herbicides and pesticides. Around the world the GM crop area was unevenly
| + | <a style="padding: 0" href="https://www.ncbi.nlm.nih.gov/pubmed/7153688">(Bevan & Chilton, 1982; Fraley, |
− | distributed with the top
| + | 1983; Herrera‐Estrella |
− | five countries United States of America (USA), Brazil, Argentina, Canada and India planting 91% of the
| + | et al., 1983)</a>. |
− | global
| + | Soon, the first GM plants were commercialized: in the |
− | GM crop area.
| + | early 1990´s China approved modified tobacco and in 1994 the United States Food and Drug Administration |
− | In the EU, the two nations Spain and Portugal planted the GM crop MON810, which is an insecticide resistant
| + | (U.S. |
− | maize, together
| + | FDA) approved |
− | covering 120.990 hectares. 95% of the area was planted by Spain. From 2017 to 2018 GM crop area in the EU
| + | the “FLAVR SAVR” tomato which was modified to have a longer shelf live by delaying ripening. Today |
− | has
| + | numerous |
− | decreased by
| + | GM |
− | 8% from 131.535 hectares (Figure 2). Nevertheless the EU imported GM crops, roughly 30 million tons of
| + | plants exist |
− | soybean
| + | and are in use, covering popular fruits like papaya, melon and apple, flowers like roses, feed plants like |
− | products,
| + | sugar beet, |
− | 10 million tons of maize and 2.5 million tons of canola originating from Argentina, Brazil and the USA.
| + | vegetables like tomato, maize and potato and even cotton for clothes production |
− | Since
| + | <a style="padding: 0" href="http://www.isaaa.org/gmapprovaldatabase/cropslist/default.asp">(‘GM Crops |
− | 1992, across
| + | List—GM Approval |
− | the world 4.349 approvals to GM crops have been issued, of this being 2.063 for food, 1.461 for feed use and
| + | Database | ISAAA.org’, n.d.)</a>.</p> |
− | 825 for
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
− | cultivation <a style="padding: 0"
| + | <b>Current numbers on GM crops</b><br> |
− | href="https://www.isaaa.org/resources/publications/briefs/54/executivesummary/default.asp"> | + | <i>World</i><br>As stated above, many GM crops are relevant for food production today, be it indirectly |
− | (‘ISAAA Brief 54-2018: Executive Summary | ISAAA.org’, n.d.)</a>.
| + | for |
− | </p>
| + | feed in |
− | <figure style="text-align:center">
| + | production lines or directly as consumables. In 2018, 26 countries planted 191.7 million hectares |
− | <img style="height: 393px; width: 450px;"
| + | worldwide |
− | src="https://static.igem.org/mediawiki/2019/b/b3/T--marburg--report_on_genetic_engineering_GM_crops_2018.jpg"
| + | with GM crops, |
− | alt="GM crops 2018">
| + | which is an increase of 1% from 2017´s worldwide planted area. Accordingly, since its first |
− | <figcaption style="max-width: 2400px; text-align: center">
| + | commercialization |
− | Fig.1 - Area and adoption rate of GM crops (biotech crops) in 2018 worldwide.* GM sugar beets, potatoes,
| + | in 1996 with |
− | apple, squash, papaya and brinjal/eggplant. | + | 1.7 million hectares planted, GM crop area increased by an approximate 113-fold. The accumulated area |
− | <a style="padding: 0" | + | planted |
| + | with GM crops |
| + | from 1996 to 2018 was 2.5 billion hectares. This makes biotechnology the fastest adopted crop technology |
| + | in |
| + | the world. Of |
| + | the 193 member nations of the United Nations Organisation (UNO) 42 nations plus the European Union (EU) |
| + | adopted GM crops, |
| + | of which 26 countries (21 developing and 5 industrial) planted and 44 imported GM crops. The four major GM |
| + | crops, namely |
| + | soybeans, maize, cotton and canola, occupied 99% of the GM crop area (Figure 1). GM crops share in total |
| + | crop |
| + | area was 78% |
| + | for soybeans, 76% for cotton, 30% or maize and 29% for canola. 42% of the global GM crop area was planted |
| + | with |
| + | stacked trait |
| + | crops tolerant to various herbicides and pesticides. Around the world the GM crop area was unevenly |
| + | distributed with the top |
| + | five countries United States of America (USA), Brazil, Argentina, Canada and India planting 91% of the |
| + | global |
| + | GM crop area. |
| + | In the EU, the two nations Spain and Portugal planted the GM crop MON810, which is an insecticide |
| + | resistant |
| + | maize, together |
| + | covering 120.990 hectares. 95% of the area was planted by Spain. From 2017 to 2018 GM crop area in the EU |
| + | has |
| + | decreased by |
| + | 8% from 131.535 hectares (Figure 2). Nevertheless the EU imported GM crops, roughly 30 million tons of |
| + | soybean |
| + | products, |
| + | 10 million tons of maize and 2.5 million tons of canola originating from Argentina, Brazil and the USA. |
| + | Since |
| + | 1992, across |
| + | the world 4.349 approvals to GM crops have been issued, of this being 2.063 for food, 1.461 for feed use |
| + | and |
| + | 825 for |
| + | cultivation <a style="padding: 0" |
| href="https://www.isaaa.org/resources/publications/briefs/54/executivesummary/default.asp"> | | href="https://www.isaaa.org/resources/publications/briefs/54/executivesummary/default.asp"> |
− | Adopted from ISAAA, 2018</a>. | + | (‘ISAAA Brief 54-2018: Executive Summary | ISAAA.org’, n.d.)</a>. |
− | </figcaption>
| + | </p> |
− | </figure>
| + | <figure style="text-align:center"> |
− | <figure style="text-align:center">
| + | <img style="height: 393px; width: 450px;" |
− | <img style="height: 500px; width: 500px;"
| + | src="https://static.igem.org/mediawiki/2019/b/b3/T--marburg--report_on_genetic_engineering_GM_crops_2018.jpg" |
− | src="https://static.igem.org/mediawiki/2019/0/00/T--marburg--report_on_genetic_engineering_global_map.jpg"
| + | alt="GM crops 2018"> |
− | alt="Global map">
| + | <figcaption style="max-width: 2400px; text-align: center"> |
− | <figcaption style="max-width: 2400px; text-align: center">
| + | Fig.1 - Area and adoption rate of GM crops (biotech crops) in 2018 worldwide.* GM sugar beets, potatoes, |
− | Fig.2 - Global map of GM (biotech) countries in 2018.
| + | apple, squash, papaya and brinjal/eggplant. |
| + | <a style="padding: 0" href="https://www.isaaa.org/resources/publications/briefs/54/executivesummary/default.asp"> |
| + | Adopted from ISAAA, 2018</a>. |
| + | </figcaption> |
| + | </figure> |
| + | <figure style="text-align:center"> |
| + | <img style="height: 500px; width: 500px;" |
| + | src="https://static.igem.org/mediawiki/2019/0/00/T--marburg--report_on_genetic_engineering_global_map.jpg" |
| + | alt="Global map"> |
| + | <figcaption style="max-width: 2400px; text-align: center"> |
| + | Fig.2 - Global map of GM (biotech) countries in 2018. |
| + | <a style="padding: 0" href="https://www.isaaa.org/resources/publications/briefs/54/executivesummary/default.asp"> |
| + | Adopted from ISAAA, 2018</a>. |
| + | </figcaption> |
| + | </figure> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b><i>Germany</i></b><br> |
| + | In Germany, there is no more GM crop farming since 2012. GM maize has been planted last in 2008 |
| + | (3.171 hectares, 0.15% of total maize area in Germany) and GM potatoes have been planted last in 2011 |
| + | (2 hectares, 0.0008% of total potato area in Germany). GM crop area never made up more than 0.02% of land |
| + | used |
| + | by |
| + | agriculture in Germany <a style="padding: 0" |
| + | href="https://www.bmel.de/DE/Landwirtschaft/Pflanzenbau/Gentechnik/_Texte/Gentechnik_Wasgenauistdas.html"> |
| + | (‘Gentechnik’, n.d.)</a>.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b>Modern Methods in Breeding</b><br> |
| + | The traditional way of breeding, as explained above, although generating many domestic plants and animals, |
| + | is |
| + | relatively |
| + | slow and limited by the available traits individuals express. Modern breeding methods enhance the trait |
| + | spectrum and the pace |
| + | in which new traits can be discovered and implemented to crops or animals. </p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b><i>Plant Mutagenesis</i></b><br> |
| + | As it is known that practical breeding depends on genetic variation plant mutagenesis expands the |
| + | variability of |
| + | traits. |
| + | Variations found in nature do not represent the original spectra of spontaneous mutation due to the fact |
| + | that |
| + | they are |
| + | recombining within populations and interacting with environmental factors. In the process of mutagenesis |
| + | heritable changes |
| + | occur in the genetic information induced by mutagenic agents called mutagens. These mutagens can be of |
| + | chemical, |
| + | for |
| + | instance substances interacting with the DNA, or of physical origin, such as ionizing radiation |
| + | <a style="padding: 0" href="https://doi.org/10.1080/13102818.2015.1087333">(Oladosu et al., 2016)</a>. |
| + | After using the mutagen on the crops, mostly seeds, seedlings or cell cultures from which single cells can |
| + | be |
| + | grown out, |
| + | screening has to be done to see if changes in traits have been achieved by mutations. These mutations can |
| + | be |
| + | DNA |
| + | double |
| + | strand breaks, single base exchanges or alkylation of bases. In most cases, generated mutants are |
| + | heterozygous, |
| + | because |
| + | the mutation happened in only one allele. Therefore the breeder needs to rear subsequent generations to |
| + | evaluate |
| + | recessive |
| + | mutations. Selection then takes place in form of phenotypical, physical or molecular test to determine for |
| + | instance plant |
| + | height, earliness of maturity and biochemical composition. Mutagenesis breeding has impacted agriculture |
| + | massively, with |
| + | more than 3.300 entries to the Mutant Variety Database |
| + | <a style="padding: 0" href="https://mvd.iaea.org/#!Search?page=1&size=500&sortby=Name&sort=ASC">(‘Mutant |
| + | Variety Database’, |
| + | n.d.)</a>, |
| + | covering all major food and feed crops.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b><i>Genetic Engineering</i></b><br> |
| + | This term is used to describe methods which alter the genetic makeup of an organism using DNA recombinant |
| + | technology. |
| + | This technology resorts to enzymatic tools called restriction enzymes. These cut the DNA site specific and |
| + | can |
| + | thereby |
| + | isolate genetic constructs coding for desirable traits. When gene(s) are introduced into an organism this |
| + | can be |
| + | achieved |
| + | either directly or indirectly. The direct approach utilizes a method called microparticle bombardment |
| + | <a style="padding: 0" href="https://doi.org/10.1111/j.1399-3054.1990.tb05888.x">(Sanford, 1990)</a>. |
| + | Developed in the 1980´s, engineered DNA is coated on microparticles of either gold or tungsten and then |
| + | shot with high velocity at the target organism using high pressure helium gas. The DNA fragments can then |
| + | be |
| + | incorporated |
| + | into the organism’s genetic material. There are other direct methods such as electroporation or |
| + | microinjection |
| + | but particle |
| + | bombardment is the most effective. The indirect approach makes use of a vector: the soil bacterium |
| + | Agrobacterium |
| + | tumefaciens |
| + | naturally infects plants and alters its hosts genome via a plasmid called Ti-plasmid. This plasmid can be |
| + | engineered to carry |
| + | genes coding for a desired traits instead of its natural genes for infection. With the development of a |
| + | method |
| + | called |
| + | CRISPR/Cas9 and other variants genetic engineering in plants got much easier |
| + | <a style="padding: 0" href="https://doi.org/10.1126/science.1231143">(Cong et al., 2013</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1095/biolreprod.114.123935">DeMayo & Spencer, 2014</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1038/nprot.2013.143">Ran et al., 2013)</a>. |
| + | This system is found in bacteria where it serves as a defence mechanism against viruses. The endonuclease |
| + | is |
| + | guided to its |
| + | target cutting site via a guide mRNA where it induces a double strand break (DBS). The DBS can be repaired |
| + | in |
| + | two distinct |
| + | ways. Non-homologous end joining leads to a small deletion while homologous recombination allows for the |
| + | integration of |
| + | donor DNA into the endogenous DNA. Thereby, the CRISPR method allows for small alteration or hole gene |
| + | insertions at target |
| + | sites.<br>At this point it may be appropriate to introduce the two terms “cisgenic” and “transgenic”. |
| + | While |
| + | “transgenic” |
| + | refers to organisms in which genetic material outside the species boundary, originating from a donor |
| + | organism |
| + | which is |
| + | sexually incompatible to the engineered organism, has been inserted.“Cisgenic” on the contrary describes |
| + | genetic |
| + | modifications within the boundaries of sexual compatibility. Therefore, cisgenic plants are similar to |
| + | traditionally bred |
| + | plants <a style="padding: 0" href="https://doi.org/10.1038/sj.embor.7400769">(Schouten, Krens, & Jacobsen, |
| + | 2006)</a>. The most |
| + | obvious example |
| + | of transgenic plants are the many varieties of so |
| + | called “Bt” crops. Standing for Bacillus thuringiensis, into these plants a gene from the bacterium was |
| + | integrated which |
| + | leads to the production of a crystal protein that is toxic to specific pest insects |
| + | <a style="padding: 0" href="http://sitn.hms.harvard.edu/flash/2015/insecticidal-plants/">(‘Insecticidal |
| + | Plants’, 2015)</a>.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b>Opinions on GMOs</b><br> |
| + | There are many scientific publications evaluating specific GMO traits towards the environment and health |
| + | safety. |
| + | Additionally many reviews exist summarizing GMO effects to a much broader scale possible here |
| + | <a style="padding: 0" href="https://doi.org/10.1007/s13197-012-0899-1">(Bawa & Anilakumar, 2013</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.3109/07388551.2013.823595">Nicolia, Manzo, Veronesi, & |
| + | Rosellini, 2014</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1016/j.fct.2011.11.048">Snell et al., 2012</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">Zhang, Wohlhueter, & Zhang, |
| + | 2016)</a>. |
| + | In many of these, authors conclude that the application of GMO offers great opportunities but still has to |
| + | be |
| + | carried out |
| + | with precautions. A simple “yes” or “no” cannot be given |
| + | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">(Zhang et al., 2016)</a>. Still, |
| + | due |
| + | to the partly |
| + | contradictory |
| + | evidence, it cannot be said there is a consensus among scientists, according to |
| + | <a style="padding: 0" href="https://doi.org/10.1186/s12302-014-0034-1">Hilbeck et al., 2015</a>.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b><i>Benefits of GM crops</i></b><br> |
| + | Humanity faces several challenges in the coming decades. Among them are the increasing world population, a |
| + | decrease of |
| + | arable land or the bottleneck of traditional breeding methods |
| + | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">(Zhang et al., 2016)</a>. |
| + | To all of these, GMOs pose a genuine answer. The easiest way to produce more food for a growing population |
| + | is to |
| + | increase |
| + | productivity by earlier maturity, easier harvesting, processing and cultivation. Adding to that, if we |
| + | resorted |
| + | to |
| + | organically producing todays yields, humanity would need to cultivate an additionally 3 billion hectares, |
| + | which |
| + | is the |
| + | equivalent to the size of two South America’s |
| + | <a style="padding: 0" href="http://www.marklynas.org/2013/04/time-to-call-out-the-anti-gmo-conspiracy-theory/">(‘Time |
| + | to call |
| + | out |
| + | the anti-GMO conspiracy theory – Mark Lynas’, n.d.)</a>. |
| + | But food also needs to become nutritious. A good example here is “Golden Rice” |
| + | <a style="padding: 0" href="https://doi.org/10.1126/science.287.5451.303">(Ye et al., 2000)</a>, |
| + | which produces a precursor of vitamin A. The deficiency of vitamin A is estimated to kill more than half a |
| + | million |
| + | children under the age of 5 each year |
| + | <a style="padding: 0" href="https://doi.org/10.1016/S0140-6736(07)61690-0">(Black et al., 2008)</a> |
| + | and cause another half million irreversible cases of childhood blindness |
| + | <a style="padding: 0" href="https://www.ncbi.nlm.nih.gov/pubmed/1600583">(Humphrey, West, & Sommer, |
| + | 1992)</a>.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b><i>Risks of GM crops</i></b><br> |
| + | GMOs pose risks to its consumer as do crops deriving from traditional breeding. Major risks are toxicity, |
| + | allergenicity and genetic hazards emerging from the inserted or altered gene itself, the expressed |
| + | protein, |
| + | products |
| + | of the metabolism, pleiotropic effects or the disruption of natural genes in the organism |
| + | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">(Zhang et al., 2016)</a>. |
| + | There have been reports on the strong allergenicity of “Starlink” maize, which is directly connected to |
| + | the |
| + | inserted gene |
| + | from Bacillus thuringiensis |
| + | <a style="padding: 0" href="https://doi.org/10.1016/j.toxicon.2006.11.022">(Bravo, Gill, & Soberón, |
| + | 2007</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1051/agro/2010027">Sanchis, 2011</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1146/annurev.en.39.010194.000403">Tabashnik, 1994</a>; |
| + | <a style="padding: 0" href="https://doi.org/10.1071/CP13167">Werth, Boucher, Thornby, Walker, & Charles, |
| + | 2013)</a>. |
| + | Also, GM crops can have an adverse ecological influence. For example, the weed species Amaranthus palmeri |
| + | did |
| + | evolve a |
| + | glyphosate resistance after years of glyphosate use on resistant cotton fields |
| + | <a style="padding: 0" href="https://doi.org/10.1038/497024a">(Gilbert, 2013)</a>. |
| + | Another possibility is the fact, that insect resistant crops infer with ecological food webs by shifting |
| + | predator prey |
| + | ratios. Moreover, targeted pests might decline and primary minor pest become major issues |
| + | <a style="padding: 0" href="https://doi.org/10.1007/s13197-012-0899-1">(Bawa & Anilakumar, 2013; Snow & |
| + | Palma, 1997)</a>.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | <b>Statements from Authorities</b><br> |
| + | The Public Acceptance of Agricultural Biotechnologies (PABE) project revealed a range of questions |
| + | concerning |
| + | rather institutional considerations of the public, such as who is befitting from GMO use, by whom |
| + | consequences |
| + | have |
| + | been evaluated, if authorities have enough power to regulate large companies and why the public has not |
| + | been |
| + | better |
| + | informed about their use |
| + | <a style="padding: 0" href="https://doi.org/10.1093/embo-reports/kve142">(Marris, 2001)</a>. |
| + | For this reason, an overview of institutional statements might be appropriate.<br> |
| + | The European Commision (EC) published the book “A decade of EU-funded GMO research”. Within this endeavor |
| + | more |
| + | than |
| + | 200 million Euro of research grants were spent to evaluate GMO´s in areas such as environmental impact, |
| + | food |
| + | safety, |
| + | biomaterials and biofuels and risk assessment and management. It conclusively states: “The main conclusion |
| + | to be |
| + | drawn from the efforts of more than 130 research projects, covering a period of more than 25 years of |
| + | research, |
| + | and |
| + | involving more than 500 independent research groups, is that biotechnology, and in particular GMOs, are |
| + | not |
| + | per |
| + | se more |
| + | risky than e.g. conventional plant breeding technologies.” |
| <a style="padding: 0" | | <a style="padding: 0" |
− | href="https://www.isaaa.org/resources/publications/briefs/54/executivesummary/default.asp"> | + | href="https://op.europa.eu:443/en/publication-detail/-/publication/d1be9ff9-f3fa-4f3c-86a5-beb0882e0e65">(Publications |
− | Adopted from ISAAA, 2018</a>.
| + | Office of the European Union, 2010)</a><br> |
− | </figcaption>
| + | The National Academy of Sciences founded by the U.S. Congress summarize in their comprehensive report, |
− | </figure>
| + | that |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | large |
− | <b><i>Germany</i></b><br>
| + | numbers of animal feeding studies provided reasonable evidence that animals were not harmed by food |
− | In Germany, there is no more GM crop farming since 2012. GM maize has been planted last in 2008
| + | derived |
− | (3.171 hectares, 0.15% of total maize area in Germany) and GM potatoes have been planted last in 2011
| + | from |
− | (2 hectares, 0.0008% of total potato area in Germany). GM crop area never made up more than 0.02% of land
| + | GM crops, |
− | used
| + | although admitting some studies were not designed optimal. Furthermore, long-term data in livestock health |
− | by
| + | before and |
− | agriculture in Germany <a style="padding: 0"
| + | after GM crop introduction did not show adverse effects associated with the crops. And at last, |
− | href="https://www.bmel.de/DE/Landwirtschaft/Pflanzenbau/Gentechnik/_Texte/Gentechnik_Wasgenauistdas.html">
| + | epidemiological |
− | (‘Gentechnik’, n.d.)</a>.</p>
| + | data on |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | cancer and human health over time was revised but no substantiated evidence was found that GM crops are |
− | <b>Modern Methods in Breeding</b><br>
| + | less |
− | The traditional way of breeding, as explained above, although generating many domestic plants and animals,
| + | safe than |
− | is
| + | foods from non-GM crops. |
− | relatively
| + | <a style="padding: 0" href="https://doi.org/10.17226/23395">(Read "Genetically Engineered Crops, |
− | slow and limited by the available traits individuals express. Modern breeding methods enhance the trait
| + | n.d.)</a><br> |
− | spectrum and the pace
| + | The British Royal Society states the following to the question “Is it safe to eat GM crops?” on its |
− | in which new traits can be discovered and implemented to crops or animals. </p>
| + | website: |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | “Yes. |
− | <b><i>Plant Mutagenesis</i></b><br>
| + | There is no evidence that a crop is dangerous to eat just because it is GM. There could be risks |
− | As it is known that practical breeding depends on genetic variation plant mutagenesis expands the
| + | associated |
− | variability of
| + | with |
− | traits.
| + | the |
− | Variations found in nature do not represent the original spectra of spontaneous mutation due to the fact
| + | specific new gene introduced, which is why each crop with a new characteristic introduced by GM is subject |
− | that
| + | |
− | they are
| + | |
− | recombining within populations and interacting with environmental factors. In the process of mutagenesis
| + | |
− | heritable changes
| + | |
− | occur in the genetic information induced by mutagenic agents called mutagens. These mutagens can be of
| + | |
− | chemical,
| + | |
− | for
| + | |
− | instance substances interacting with the DNA, or of physical origin, such as ionizing radiation
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1080/13102818.2015.1087333">(Oladosu et al., 2016)</a>.
| + | |
− | After using the mutagen on the crops, mostly seeds, seedlings or cell cultures from which single cells can
| + | |
− | be
| + | |
− | grown out,
| + | |
− | screening has to be done to see if changes in traits have been achieved by mutations. These mutations can be
| + | |
− | DNA
| + | |
− | double
| + | |
− | strand breaks, single base exchanges or alkylation of bases. In most cases, generated mutants are
| + | |
− | heterozygous,
| + | |
− | because
| + | |
− | the mutation happened in only one allele. Therefore the breeder needs to rear subsequent generations to
| + | |
− | evaluate
| + | |
− | recessive
| + | |
− | mutations. Selection then takes place in form of phenotypical, physical or molecular test to determine for
| + | |
− | instance plant
| + | |
− | height, earliness of maturity and biochemical composition. Mutagenesis breeding has impacted agriculture
| + | |
− | massively, with
| + | |
− | more than 3.300 entries to the Mutant Variety Database
| + | |
− | <a style="padding: 0" href="https://mvd.iaea.org/#!Search?page=1&size=500&sortby=Name&sort=ASC">(‘Mutant
| + | |
− | Variety Database’,
| + | |
− | n.d.)</a>,
| + | |
− | covering all major food and feed crops.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | <b><i>Genetic Engineering</i></b><br>
| + | |
− | This term is used to describe methods which alter the genetic makeup of an organism using DNA recombinant
| + | |
− | technology.
| + | |
− | This technology resorts to enzymatic tools called restriction enzymes. These cut the DNA site specific and
| + | |
− | can
| + | |
− | thereby
| + | |
− | isolate genetic constructs coding for desirable traits. When gene(s) are introduced into an organism this
| + | |
− | can be
| + | |
− | achieved
| + | |
− | either directly or indirectly. The direct approach utilizes a method called microparticle bombardment
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1111/j.1399-3054.1990.tb05888.x">(Sanford, 1990)</a>.
| + | |
− | Developed in the 1980´s, engineered DNA is coated on microparticles of either gold or tungsten and then
| + | |
− | shot with high velocity at the target organism using high pressure helium gas. The DNA fragments can then be
| + | |
− | incorporated
| + | |
− | into the organism’s genetic material. There are other direct methods such as electroporation or
| + | |
− | microinjection
| + | |
− | but particle
| + | |
− | bombardment is the most effective. The indirect approach makes use of a vector: the soil bacterium
| + | |
− | Agrobacterium
| + | |
− | tumefaciens
| + | |
− | naturally infects plants and alters its hosts genome via a plasmid called Ti-plasmid. This plasmid can be
| + | |
− | engineered to carry
| + | |
− | genes coding for a desired traits instead of its natural genes for infection. With the development of a
| + | |
− | method
| + | |
− | called
| + | |
− | CRISPR/Cas9 and other variants genetic engineering in plants got much easier
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1126/science.1231143">(Cong et al., 2013</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1095/biolreprod.114.123935">DeMayo & Spencer, 2014</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1038/nprot.2013.143">Ran et al., 2013)</a>.
| + | |
− | This system is found in bacteria where it serves as a defence mechanism against viruses. The endonuclease is
| + | |
− | guided to its
| + | |
− | target cutting site via a guide mRNA where it induces a double strand break (DBS). The DBS can be repaired
| + | |
− | in
| + | |
− | two distinct
| + | |
− | ways. Non-homologous end joining leads to a small deletion while homologous recombination allows for the
| + | |
− | integration of
| + | |
− | donor DNA into the endogenous DNA. Thereby, the CRISPR method allows for small alteration or hole gene
| + | |
− | insertions at target
| + | |
− | sites.<br>At this point it may be appropriate to introduce the two terms “cisgenic” and “transgenic”. While
| + | |
− | “transgenic”
| + | |
− | refers to organisms in which genetic material outside the species boundary, originating from a donor
| + | |
− | organism
| + | |
− | which is
| + | |
− | sexually incompatible to the engineered organism, has been inserted.“Cisgenic” on the contrary describes
| + | |
− | genetic
| + | |
− | modifications within the boundaries of sexual compatibility. Therefore, cisgenic plants are similar to
| + | |
− | traditionally bred
| + | |
− | plants <a style="padding: 0" href="https://doi.org/10.1038/sj.embor.7400769">(Schouten, Krens, & Jacobsen,
| + | |
− | 2006)</a>. The most
| + | |
− | obvious example
| + | |
− | of transgenic plants are the many varieties of so
| + | |
− | called “Bt” crops. Standing for Bacillus thuringiensis, into these plants a gene from the bacterium was
| + | |
− | integrated which
| + | |
− | leads to the production of a crystal protein that is toxic to specific pest insects
| + | |
− | <a style="padding: 0" href="http://sitn.hms.harvard.edu/flash/2015/insecticidal-plants/">(‘Insecticidal
| + | |
− | Plants’, 2015)</a>.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | <b>Opinions on GMOs</b><br>
| + | |
− | There are many scientific publications evaluating specific GMO traits towards the environment and health
| + | |
− | safety.
| + | |
− | Additionally many reviews exist summarizing GMO effects to a much broader scale possible here
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1007/s13197-012-0899-1">(Bawa & Anilakumar, 2013</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.3109/07388551.2013.823595">Nicolia, Manzo, Veronesi, &
| + | |
− | Rosellini, 2014</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/j.fct.2011.11.048">Snell et al., 2012</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">Zhang, Wohlhueter, & Zhang,
| + | |
− | 2016)</a>.
| + | |
− | In many of these, authors conclude that the application of GMO offers great opportunities but still has to
| + | |
− | be
| + | |
− | carried out
| + | |
− | with precautions. A simple “yes” or “no” cannot be given
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">(Zhang et al., 2016)</a>. Still, due
| + | |
− | to the partly
| + | |
− | contradictory
| + | |
− | evidence, it cannot be said there is a consensus among scientists, according to
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1186/s12302-014-0034-1">Hilbeck et al., 2015</a>.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | <b><i>Benefits of GM crops</i></b><br>
| + | |
− | Humanity faces several challenges in the coming decades. Among them are the increasing world population, a
| + | |
− | decrease of
| + | |
− | arable land or the bottleneck of traditional breeding methods
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">(Zhang et al., 2016)</a>.
| + | |
− | To all of these, GMOs pose a genuine answer. The easiest way to produce more food for a growing population
| + | |
− | is to
| + | |
− | increase
| + | |
− | productivity by earlier maturity, easier harvesting, processing and cultivation. Adding to that, if we
| + | |
− | resorted
| + | |
− | to
| + | |
− | organically producing todays yields, humanity would need to cultivate an additionally 3 billion hectares,
| + | |
− | which
| + | |
− | is the
| + | |
− | equivalent to the size of two South America’s
| + | |
− | <a style="padding: 0"
| + | |
− | href="http://www.marklynas.org/2013/04/time-to-call-out-the-anti-gmo-conspiracy-theory/">(‘Time to call
| + | |
− | out
| + | |
− | the anti-GMO conspiracy theory – Mark Lynas’, n.d.)</a>.
| + | |
− | But food also needs to become nutritious. A good example here is “Golden Rice”
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1126/science.287.5451.303">(Ye et al., 2000)</a>,
| + | |
− | which produces a precursor of vitamin A. The deficiency of vitamin A is estimated to kill more than half a
| + | |
− | million
| + | |
− | children under the age of 5 each year
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/S0140-6736(07)61690-0">(Black et al., 2008)</a>
| + | |
− | and cause another half million irreversible cases of childhood blindness
| + | |
− | <a style="padding: 0" href="https://www.ncbi.nlm.nih.gov/pubmed/1600583">(Humphrey, West, & Sommer,
| + | |
− | 1992)</a>.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | <b><i>Risks of GM crops</i></b><br>
| + | |
− | GMOs pose risks to its consumer as do crops deriving from traditional breeding. Major risks are toxicity,
| + | |
− | allergenicity and genetic hazards emerging from the inserted or altered gene itself, the expressed protein,
| + | |
− | products
| + | |
− | of the metabolism, pleiotropic effects or the disruption of natural genes in the organism
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/j.fshw.2016.04.002">(Zhang et al., 2016)</a>.
| + | |
− | There have been reports on the strong allergenicity of “Starlink” maize, which is directly connected to the
| + | |
− | inserted gene
| + | |
− | from Bacillus thuringiensis
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1016/j.toxicon.2006.11.022">(Bravo, Gill, & Soberón,
| + | |
− | 2007</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1051/agro/2010027">Sanchis, 2011</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1146/annurev.en.39.010194.000403">Tabashnik, 1994</a>;
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1071/CP13167">Werth, Boucher, Thornby, Walker, & Charles,
| + | |
− | 2013)</a>.
| + | |
− | Also, GM crops can have an adverse ecological influence. For example, the weed species Amaranthus palmeri
| + | |
− | did
| + | |
− | evolve a
| + | |
− | glyphosate resistance after years of glyphosate use on resistant cotton fields
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1038/497024a">(Gilbert, 2013)</a>.
| + | |
− | Another possibility is the fact, that insect resistant crops infer with ecological food webs by shifting
| + | |
− | predator prey
| + | |
− | ratios. Moreover, targeted pests might decline and primary minor pest become major issues
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1007/s13197-012-0899-1">(Bawa & Anilakumar, 2013; Snow &
| + | |
− | Palma, 1997)</a>.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | <b>Statements from Authorities</b><br>
| + | |
− | The Public Acceptance of Agricultural Biotechnologies (PABE) project revealed a range of questions
| + | |
− | concerning
| + | |
− | rather institutional considerations of the public, such as who is befitting from GMO use, by whom
| + | |
− | consequences
| + | |
− | have
| + | |
− | been evaluated, if authorities have enough power to regulate large companies and why the public has not been
| + | |
− | better
| + | |
− | informed about their use
| + | |
− | <a style="padding: 0" href="https://doi.org/10.1093/embo-reports/kve142">(Marris, 2001)</a>.
| + | |
− | For this reason, an overview of institutional statements might be appropriate.<br>
| + | |
− | The European Commision (EC) published the book “A decade of EU-funded GMO research”. Within this endeavor
| + | |
− | more
| + | |
− | than
| + | |
− | 200 million Euro of research grants were spent to evaluate GMO´s in areas such as environmental impact, food
| + | |
− | safety,
| + | |
− | biomaterials and biofuels and risk assessment and management. It conclusively states: “The main conclusion
| + | |
− | to be
| + | |
− | drawn from the efforts of more than 130 research projects, covering a period of more than 25 years of
| + | |
− | research,
| + | |
− | and
| + | |
− | involving more than 500 independent research groups, is that biotechnology, and in particular GMOs, are not
| + | |
− | per
| + | |
− | se more
| + | |
− | risky than e.g. conventional plant breeding technologies.”
| + | |
− | <a style="padding: 0"
| + | |
− | href="https://op.europa.eu:443/en/publication-detail/-/publication/d1be9ff9-f3fa-4f3c-86a5-beb0882e0e65">(Publications
| + | |
− | Office of the European Union, 2010)</a><br>
| + | |
− | The National Academy of Sciences founded by the U.S. Congress summarize in their comprehensive report, that
| + | |
− | large
| + | |
− | numbers of animal feeding studies provided reasonable evidence that animals were not harmed by food derived
| + | |
− | from
| + | |
− | GM crops,
| + | |
− | although admitting some studies were not designed optimal. Furthermore, long-term data in livestock health
| + | |
− | before and
| + | |
− | after GM crop introduction did not show adverse effects associated with the crops. And at last,
| + | |
− | epidemiological
| + | |
− | data on
| + | |
− | cancer and human health over time was revised but no substantiated evidence was found that GM crops are less
| + | |
− | safe than
| + | |
− | foods from non-GM crops.
| + | |
− | <a style="padding: 0" href="https://doi.org/10.17226/23395">(Read "Genetically Engineered Crops,
| + | |
− | n.d.)</a><br>
| + | |
− | The British Royal Society states the following to the question “Is it safe to eat GM crops?” on its website:
| + | |
− | “Yes.
| + | |
− | There is no evidence that a crop is dangerous to eat just because it is GM. There could be risks associated
| + | |
− | with
| + | |
− | the
| + | |
− | specific new gene introduced, which is why each crop with a new characteristic introduced by GM is subject
| + | |
− | to
| + | |
− | close scrutiny.
| + | |
− | Since the first widespread commercialisation of GM produce 18 years ago there has been no evidence of ill
| + | |
− | effects linked to
| + | |
− | the consumption of any approved GM crop.” Before new GM foods are permitted to the market a variety of test
| + | |
− | has
| + | |
− | to be
| + | |
− | completed and the results are used by the authorities to determine the safety of the GM product, making “new
| + | |
− | GM
| + | |
− | crop
| + | |
− | varieties at least as safe to eat as new non GM varieties, which are not tested in this way.”
| + | |
− | <a style="padding: 0"
| + | |
− | href="https://royalsociety.org/topics-policy/projects/gm-plants/is-it-safe-to-eat-gm-crops/">(‘Is it safe
| + | |
| to | | to |
− | eat GM crops?’, n.d.)</a> | + | close scrutiny. |
− | </p>
| + | Since the first widespread commercialisation of GM produce 18 years ago there has been no evidence of ill |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | effects linked to |
− | <b>Conclusion</b><br>
| + | the consumption of any approved GM crop.” Before new GM foods are permitted to the market a variety of |
− | As biologists, using genetic engineering methods every single day, they are quite natural to us.
| + | test |
− | Nevertheless,
| + | has |
− | we are
| + | to be |
− | confronted with the public debate too. Having experienced the public aversion towards GMO ourselves and
| + | completed and the results are used by the authorities to determine the safety of the GM product, making |
− | having
| + | “new |
− | red about
| + | GM |
− | the many proposed justifications against it we realized that a direct exchange between the public and
| + | crop |
− | experts
| + | varieties at least as safe to eat as new non GM varieties, which are not tested in this way.” |
− | from all
| + | <a style="padding: 0" |
− | fields as well as diverse interest groups might provide a good common ground for an open discussion. In this
| + | href="https://royalsociety.org/topics-policy/projects/gm-plants/is-it-safe-to-eat-gm-crops/">(‘Is it |
− | way
| + | safe |
− | we hoped
| + | to |
− | the perspective of being indoctrinated reflected my public studies might be avoided.
| + | eat GM crops?’, n.d.)</a> |
− | <br>
| + | </p> |
− | </p>
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
− | </article>
| + | <b>Conclusion</b><br> |
− | </section>
| + | As biologists, using genetic engineering methods every single day, they are quite natural to us. |
− | <hr>
| + | Nevertheless, |
− | <section class="section grid">
| + | we are |
− | <div class="sub" onclick="popup('rbn411')">
| + | confronted with the public debate too. Having experienced the public aversion towards GMO ourselves and |
− | <div class="sub-header">
| + | having |
− | <h1>
| + | red about |
− | N I N A<br> | + | the many proposed justifications against it we realized that a direct exchange between the public and |
− | S C H E E R
| + | experts |
− | </h1>
| + | from all |
− | <hr>
| + | fields as well as diverse interest groups might provide a good common ground for an open discussion. In |
− | </div>
| + | this |
− | <div class="sub-content">
| + | way |
− | <p>
| + | we hoped |
− | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist.
| + | the perspective of being indoctrinated reflected my public studies might be avoided. |
− | </p>
| + | <br> |
− | </div>
| + | </p> |
− | </div>
| + | |
− | <div id="rbn411" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Nina Scheer</h1>
| + | |
− | <button type="button" onclick="hide('rbn411')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <section class="section">
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | Burning forests, melting ice. With greenhouse gases as a global threat to our climate we need a
| + | |
− | multitude of ways to solve this issue. One of the biggest challenges in the future will be
| + | |
− | nutrition: the UN expects the world population to rise to 10 billion by 2050. Without genetically
| + | |
− | engineered crops it will be very hard to nourish such a huge population.<br>
| + | |
− | <br>
| + | |
− | We met Nina Scheer from the Social Democratic Party of Germany (SPD) one month before our panel
| + | |
− | discussion to bring politics and science closer together. In particular, we discussed green genetic
| + | |
− | engineering. Like most of germany’s political parties Nina Scheer and the SPD are in suspicion about
| + | |
− | genetic engineering. A general fear for possible consequences is holding innovation at stagnation,
| + | |
− | preventing any further development and leaving important key technologies to global competitors.<br>
| + | |
− | <br>
| + | |
− | As we told Scheer about our project she was convinced of our good spirit and supported the idea that
| + | |
− | the state should put more money into research, rather than us relying on third-party funds.
| + | |
− | Nonetheless did Scheer see a trust issue concerning irreversible damages to nature and humankind as
| + | |
− | well as a lack of good control mechanisms when using green genetic engineering. At the example of
| + | |
− | Contergan® Scheer highlighted the challenges of uncertainty. We learned that we as scientists have
| + | |
− | the duty to proof the unmitigated safety of our products and beyond that not only proof it to our
| + | |
− | own community but also to bring this trust to society as a whole if we want our research to have an
| + | |
− | impact on reality.<br>
| + | |
− | <br>
| + | |
− | We thank Nina Scheer for this opportunity to discuss major issues of our time.<br>
| + | |
− | </p>
| + | |
− | </section>
| + | |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div id="bla" class="popup"> |
− | <div class="sub" onclick="popup('rbn412')">
| + | <div class="popup-container"> |
− | <div class="sub-header"> | + | <div class="popup-header"> |
− | <h1>
| + | <h1 class="title">Nina Scheer</h1> |
− | P L A N T   M A R K E T
| + | <button type="button" onclick="hide('bla')">X</button> |
− | </h1>
| + | </div> |
− | <hr>
| + | <div class="popup-content" style="text-align: justify;"> |
− | </div>
| + | <section class="section"> |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist.
| + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn412" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Plant Market</h1>
| + | |
− | <button type="button" onclick="hide('rbn412')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <div>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;"> | + | |
− | We advertised our panel discussion by running a booth at the plant breeders festival in Marburg on the
| + | |
− | weekend of 14th September. It is an event for young and old people alike and the perfect platform to
| + | |
− | bring our discussion closer to a diverse audience.<br>
| + | |
− | <br>
| + | |
− | When we talked with Nina Scheer, member of the german Bundestag from the Social Democrat Party, she told
| + | |
− | us that a large part of the population has a very critical attitude towards genetically modified food.
| + | |
− | We are convinced that the main reason for this critical attitude is a lack of information and
| + | |
− | communication between scientists and the public that leads to insecurities in the population. In order
| + | |
− | to get a picture of the public opinion on genetic engineering, we asked the participants to fill out a
| + | |
− | questionnaire, which we then statistically evaluated. We realized that in particular middle-aged and
| + | |
− | older people have a critical view on genetic engineering or tend to say from themselves that they don't
| + | |
− | know enough about it and would like to hear more. Through personal discussions we were able to get in
| + | |
− | contact with people, raise awareness on the issue and also learned a lot ourselves about the landscape
| + | |
− | of opinions.<br>
| + | |
− | <br>
| + | |
− | At the same time we gave children and interested adults the chance to take a closer look at our work by
| + | |
− | letting them experimentally extract DNA from pepper. We used this to also explain to the children what
| + | |
− | DNA is, what it means to them and what exactly they were doing in each step.<br>
| + | |
− | <br>
| + | |
− | Due to the contact and discussion with people from the general society and especially outside of our
| + | |
− | university background the plant breeder festival expanded our knowledge and we therefore view it as a
| + | |
− | great success. We received a lot of positive feedback and spoke personally with many supporters and
| + | |
− | critics of genetic engineering and took away some lively discussions. In addition, we were able to
| + | |
− | evaluate around 200 questionnaires and further promote our panel discussion. This was demonstrated by
| + | |
− | the run on our subsequent panel discussion, where were happy to recognize some familiar faces from the
| + | |
− | festival.<br>
| + | |
− | <br>
| + | |
− | <b>Evaluation</b>
| + | |
− | In our questionnaire, we first had the participants assess their current state of knowledge about
| + | |
− | genetic engineering and divided the question into gender, age and basic attitude.<br>
| + | |
− | <br>
| + | |
| | | |
− | As far as gender is concerned, most of the participants rated themselves in the criteria as
| + | </section> |
− | "rather bad" and "medium". Men consider themselves to be better informed than women. Especially in
| + | |
− | the
| + | |
− | category "very good" it is mainly men, while in the category "very bad" it is mostly women,
| + | |
− | regarding
| + | |
− | their self-assessment. It is possible that men are more self-confident in this aspect and thus,
| + | |
− | consider
| + | |
− | themselves to be better informed.<br>
| + | |
− | <br>
| + | |
− | </p>
| + | |
− | <figure style="text-align:center;">
| + | |
− | <div style="display:flex; flex-direction: row">
| + | |
− | <img style="height: 250px; width:425px; margin-bottom: 10px"
| + | |
− | src=https://static.igem.org/mediawiki/2019/e/e6/T--Marburg--plant-market-sex.jpg alt="sex">
| + | |
− | <img style="height: 250px; width:425px; margin-bottom: 10px"
| + | |
− | src=https://static.igem.org/mediawiki/2019/f/f3/T--Marburg--plant-market-age.jpg alt="sex">
| + | |
− | <img style="height: 250px; width:425px; margin-bottom: 10px"
| + | |
− | src=https://static.igem.org/mediawiki/2019/1/1e/T--Marburg--survey_viewvsknowledge.png alt="sex">
| + | |
− | </div>
| + | |
− | <div style="display:flex; flex-direction: row">
| + | |
− | <figcaption stye="max-width: 400px">Fig.1 - Answers analyzed by gender for the question "How
| + | |
− | knowledgable are you about gene
| + | |
− | editing?".</figcaption>
| + | |
− | <figcaption stye="max-width: 400px">Fig.2 - Answers analyzed by age for the question "How knowledgable
| + | |
− | are you about gene
| + | |
− | editing?".</figcaption>
| + | |
− | <figcaption stye="max-width: 400px">Fig.3 - Answers analyzed by attitude towards gene editing.
| + | |
− | </figcaption>
| + | |
− | </div>
| + | |
− | </figure>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | In the category “age”, the average self-assessment is also "rather bad" and"medium". However,
| + | |
− | younger people (18-29) generally considered themselves to be better informed than older people. A
| + | |
− | problem is that the older generation mayhave more difficulty reaching information.<br>
| + | |
− | <br>
| + | |
− | It is also noticeable that the participants have a positive attitude towards genetic
| + | |
− | engineering when they are better informed. This shows that there is not enough information on
| + | |
− | genetic
| + | |
− | engineering and that it does not reachthe population.<br>
| + | |
− | <br>
| + | |
− | The first part of our study reveals two problems: bad accessibility of information to the older
| + | |
− | generation creates a discrepancy between the level of knowledge between younger and older people. As
| + | |
− | a
| + | |
− | result, older people feel less informed, which in turn leads to skepticism towards genetic
| + | |
− | engineering.
| + | |
− | For example, one can focus the source of information on television/radio or newspaper and thus try
| + | |
− | to
| + | |
− | reach older people more effectively.There is also a problem with the flow of information in general,
| + | |
− | as
| + | |
− | people are obviously better attuned to genetic engineering when they know more about it. Ingeneral,
| + | |
− | there is a need for better information on the subject and more discussionat political level.<br>
| + | |
− | <br>
| + | |
− | We then asked whether the participants considered genetic engineering in plants,animals and humans
| + | |
− | to be
| + | |
− | ethically justifiable.<br>
| + | |
− | <br>
| + | |
− | Most people had a positive attitude towards plants. Here, many people probably recognize the
| + | |
− | potential, also with regard to the 2050 food problem or resistance to pests.<br>
| + | |
− | <br>
| + | |
− | Surprisingly, many participants are more likely to agree with genetic engineering in
| + | |
− | humans than in animals. Most people probably think of thepotential of genetic engineering to fight
| + | |
− | serious diseases and thus cure diseases where traditional treatment is not sufficient. In addition,
| + | |
− | when
| + | |
− | it comes to geneticengineering on animals, some people may think of animal experiments, which many
| + | |
− | consider to be reprehensible. In addition, it is potentially possible to ask people before such
| + | |
− | interventions, while animals have no voice. Our results confirmed us conducting our panel discussion
| + | |
− | to
| + | |
− | create another source of information and to inspire as many people as possible to think about it. We
| + | |
− | hope to be able to educate and hope that the potential of genetic engineeringwill be recognized by
| + | |
− | the
| + | |
− | general public.<br>
| + | |
− | <br>
| + | |
− | </p>
| + | |
− | <figure style="text-align:center;">
| + | |
− | <div style="display:flex; flex-direction: row">
| + | |
− | <img style="height: 250px; width:425px; margin-bottom: 10px"
| + | |
− | src=https://static.igem.org/mediawiki/2019/9/9b/T--Marburg--gene_editing_plants_pie.png alt="sex">
| + | |
− | <img style="height: 250px; width:425px; margin-bottom: 10px"
| + | |
− | src=https://static.igem.org/mediawiki/2019/b/bf/T--Marburg--gene_editing_animals_pie.png alt="sex">
| + | |
− | <img style="height: 250px; width:425px; margin-bottom: 10px"
| + | |
− | src=https://static.igem.org/mediawiki/2019/9/9b/T--Marburg--gene_editing_plants_pie.png alt="sex">
| + | |
− | </div>
| + | |
− | <figcaption style="max-width: 1275px">
| + | |
− | Fig.4 - Attitude towrads gene editing in plants.              
| + | |
− |                        
| + | |
− |              
| + | |
− | Fig.5 - Attitude towrads gene editing in
| + | |
− | animals.                          
| + | |
− |            
| + | |
− |        
| + | |
− | Fig.6 -
| + | |
− | Attitude towrads gene editing in humans.
| + | |
− | </figcaption>
| + | |
− | </figure> | + | |
| </div> | | </div> |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div class="sub" onclick="popup('rbn411')"> |
− | <div class="sub" onclick="popup('rbn413')">
| + | <div class="sub-header"> |
− | <div class="sub-header">
| + | <h1> |
− | <h1>
| + | N I N A<br> |
− | P A N E L D I S C U S S I O N
| + | S C H E E R |
− | </h1>
| + | </h1> |
− | <hr>
| + | <hr> |
− | </div>
| + | |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Our team has organized a panel discussion to see how experts from various fields and the | + | |
− | regional population feel about green genetic engineering.
| + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn413" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Genetic engineering panel discussion report: Blessing or curse</h1>
| + | |
− | <button type="button" onclick="hide('rbn413')">X</button> | + | |
| </div> | | </div> |
− | <div class="popup-content" style="text-align: justify;"> | + | <div class="sub-content"> |
− | <div> | + | <p> |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
− | Genetic engineering has been a hotly debated topic in politics as well as in society in the past
| + | </p> |
− | decades and still is today. New methods in Genome Editing (GE) are making the regulation of methods
| + | |
− | more and more important due to the increased difficulty to identify changes in the genetic material
| + | |
− | of manipulated organisms. The European Court of Justice (ECJ) ruling on GE of July 2018 pleased the
| + | |
− | interest groups of genetic engineering sceptics, but disappointed the research community to a large
| + | |
− | extent. The panel discussion organised by the iGEM team Marburg 2019 with participants from plant
| + | |
− | breeding research, industry, ethics research and genetic engineering critics should give the public
| + | |
− | an insight into the different breeding methods and the according viewpoints of different
| + | |
− | stakeholders. After a keynote lecture by biochemist Prof. Dr. Lars-Oliver Essen from Philipps
| + | |
− | University in Marburg the panel discussion started. It was moderated by Michael Lange of "Forschung
| + | |
− | aktuell" from Deutschlandfunk and team member Paula Mueller. The energetic audience, in which all
| + | |
− | age groups were represented, soon actively took part in the discussion, asked questions and
| + | |
− | criticized statements of the discussants on stage.<br>
| + | |
− | <br>
| + | |
− | In his keynote lecture, Prof. Dr. Lars-Oliver Essen tried to convey the scientific context of the
| + | |
− | evening to the audience. Using various common plants, such as bananas and carrots, he illustrated
| + | |
− | the products of classical breeding methods through human selection. All the species mentioned above
| + | |
− | originate from primitive types, which differ from today's food plants, for example by an enormously
| + | |
− | lower proportion of fruit flesh. He then outlined the differences between more modern breeding
| + | |
− | methods such as chemical mutagenesis or radiation and genetic tools such as the headline-making
| + | |
− | CRISPR genetic scissors. At the end of his keynote lecture, Prof. Dr. Essen outlined the ECJ ruling
| + | |
− | of July 2018 and gave an outlook on topics that influence the genetic engineering discussion, such
| + | |
− | as the population growth of mankind and the patenting of modern genetic engineering methods as well
| + | |
− | as the resulting products.<br>
| + | |
− | <br>
| + | |
− | </p> | + | |
− | <figure style="float: left; margin-right: 25px;">
| + | |
− | <img style="height: 50ex; width: 75ex"
| + | |
− | src="https://static.igem.org/mediawiki/2019/9/9e/T--Marburg--Paneldiscussion_Mikro.jpg"
| + | |
− | alt="Placeholder image">
| + | |
− | <figcaption style="max-width: 75ex">
| + | |
− | Fig.1 - Our team member Lars giving the microphone to one of the viewers, that everyone can
| + | |
− | hear his question.
| + | |
− | </figcaption>
| + | |
− | </figure>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | Most of the panelists agreed that genetic engineering offers opportunities, especially in
| + | |
− | agriculture, to address challenges such as climate change or the nutrition of the growing world
| + | |
− | population. According to the introductory statement of Prof. Dr. Andreas Weber from the Plant
| + | |
− | Science Excellence Cluster at Heinrich-Heine University in Düsseldorf, methods of genetic
| + | |
− | engineering such as CRISPR are already established tools and have no cause for concern, particularly
| + | |
− | in basic research. But subsequently, modified organisms cannot be tested in the field under natural
| + | |
− | conditions. However, the objective testing and checking of modified plants is a problem, because
| + | |
− | often independent testing organisations would not have access to certified seeds and the complete
| + | |
− | data used in the designing process, replied Dr. Christoph Then from testbiotech e.V.<br>
| + | |
− | <br>
| + | |
− | It was also discussed whether the product or the manufacturing process should serve as the basis for
| + | |
− | evaluation. Since a plant modified by GE methods cannot be distinguished from a plant cultivated by
| + | |
− | established breeding methods, the product should be the basis of the review, argued Daniel
| + | |
− | Stukenberg, representative of the party "The Humanists". A point of view with a drastically
| + | |
− | different background, here represented by ethics professor Dr. Friedemann Voigt, put the consumer in
| + | |
− | the foreground and demanded its right to know how a food is produced. This led the discussion
| + | |
− | further in the direction of the effects of genetically modified feed on farm animals and the human
| + | |
− | consumer. At this point, Dr. Christoph Then criticised the sharp decline in risk research, which
| + | |
− | pursues society's protective goals with regard to health.<br>
| + | |
− | <br>
| + | |
− | The podium also separated into simple gene edited and transgenic organisms. While gene edited plants
| + | |
− | do not contain genes from foreign organisms, such genes in transgenic plants can, for example,
| + | |
− | provide certain ingredients that make them resistant to pests or insecticides/herbicides. Transgenic
| + | |
− | plants must be assessed with special attention and in each unique case, since the individual
| + | |
− | composition of the ingredients is specific for each modified organism. This point also met with the
| + | |
− | approval of the audience, which was expressed by strong applause. Transgenic plants could not
| + | |
− | develop in a natural way and should therefore not be used in agriculture. At the moment, however,
| + | |
− | the use of genetically modified plants in organic farming is also not in compliance with the
| + | |
− | regulations, according to Freya Schäfer of FiBL (Research Institute of Organic Agriculture).<br>
| + | |
− | <br>
| + | |
− | </p>
| + | |
− | <figure style="float: right; margin-left: 25px;">
| + | |
− | <img style="height: 50ex; width: 75ex"
| + | |
− | src="https://static.igem.org/mediawiki/2019/e/e1/T--Marburg--Paneldiscussion_Podium.jpg"
| + | |
− | alt="Placeholder image">
| + | |
− | <figcaption>
| + | |
− | Fig.2 - Recording of the panelists in the middle of arguing with the viewers.
| + | |
− | </figcaption>
| + | |
− | </figure>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | Prof. Dr. Friedemann Voigt continued to ensure the ethical part of the discussion. He noted that
| + | |
− | compared to the rest of the world, there is a certain mistrust towards genetic engineering,
| + | |
− | especially in Europe. One had to estimate the risks against the opportunities, whereby he mainly
| + | |
− | identified an acceptance problem in the population, which could not be met scientifically. However,
| + | |
− | there is not only distrust of genetic engineering, but also of the economic motivation to use it.
| + | |
− | Dr. Claus Kremoser expressed concerns about seed companies with patent monopolies that could promote
| + | |
− | large monocultures. Nevertheless, the development and application of genetic engineering is strongly
| + | |
− | dependent on the respective motivation: patents are the driving force in the industry while in the
| + | |
− | scientific community it is the pressure to publicise. Too strict and thus very costly requirements
| + | |
− | for the testing of genetically modified organisms make it impossible for small companies to
| + | |
− | participate in the competition. Consequently, strong regulation would lead to a few large
| + | |
− | monopolies.<br>
| + | |
− | <br>
| + | |
− | The discussion ended with the consensus that genetic engineering in agriculture should be regulated
| + | |
− | responsibly and objectively. However, due to ideological blockades and diffuse fears in society and
| + | |
− | among political influencers, a meaningful willingness to compromise was very low.<br>
| + | |
− | <br>
| + | |
− | </p>
| + | |
− | </div>
| + | |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div id="rbn411" class="popup"> |
− | </section>
| + | <div class="popup-container"> |
− | </div>
| + | <div class="popup-header"> |
− | <hr>
| + | <h1 class="title">Nina Scheer</h1> |
− | <div style="margin-top: 10vh;">
| + | <button type="button" onclick="hide('rbn411')">X</button> |
− | <h1 class="title">Integrated Human Practices</h1>
| + | </div> |
− | <section class="section grid">
| + | <div class="popup-content" style="text-align: justify;"> |
− | <div class="sub" onclick="popup('rbn431')">
| + | <section class="section"> |
− | <div class="sub-header"> | + | |
− | <h1>
| + | |
− | C Y A N O<br>
| + | |
− | B I O T E C H
| + | |
− | </h1>
| + | |
− | <hr>
| + | |
− | </div>
| + | |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist.
| + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn431" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Cyano Biotech</h1>
| + | |
− | <button type="button" onclick="hide('rbn431')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <section class="section"> | + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | Cyano Biotech is one of the leading, top edge companies to work with sustainable and product-oriented
| + | |
− | phototrophic bacteria in Germany. As a shining figure in cyanobacterial metabolic engineering, the CEO
| + | |
− | of Cyano Biotech Dr. Dan Kramer talked with us about the possibilities of our project. His feedback led
| + | |
− | us to the design of adjusting specific parameters in our growth experiment and to the integration of our
| + | |
− | terminator library. Through our talk with a potential end user of our Green Expansion and our engineered
| + | |
− | strains, we achieved a more “real-world” focus of our project.<br>
| + | |
− | <br>
| + | |
− | As our project was in its beginning, one thing was clear: high throughput methods are essential for any
| + | |
− | viable chassis in Synthetic Biology. Sadly, we quickly notice obstacles in our way, such as inhibited
| + | |
− | growth in our plates compared to flasks. In consequence of that, we looked for help and who would be
| + | |
− | better, than a expert on that specific field? We talked with Dan Kramer and he kindly provided us with
| + | |
− | Data in his own well plate experiments. Soon we notice, that he inoculated cultures several times in a
| + | |
− | row out of the exponential phase, leading to a huge boost in doubling times. Through this support we
| + | |
− | were able to design and conduct a growth curve with as much as five pre cultures.<br>
| + | |
− | <br>
| + | |
− | Aside from that, we talked about another facet of our project.
| + | |
− | Again the strong impact of terminators, through its shadow above our talk. Yet another expert in the
| + | |
− | field of cyanobacteria, stating that in his nearly half a decade of research life that terminators are
| + | |
− | easily overread in cyanobacteria, both metaphorically and for real, and are one of the most important
| + | |
− | regulatory genetic elements. As he was found of our idea to set on the search for the best terminator,
| + | |
− | he strongly encourage us to utilize the Green Expansion to the full extent. So we set to the journey of
| + | |
− | called for a terminator library.<br>
| + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div class="sub" onclick="popup('rbn432')">
| + | |
− | <div class="sub-header">
| + | |
− | <h1>
| + | |
− | P R O F. D R.<br> | + | |
− | A N N E G R E T   W I L D E
| + | |
− | </h1>
| + | |
− | <hr>
| + | |
− | </div>
| + | |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Cultivation expertise from leading cyano scientist Prof. Wilde
| + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn432" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Cultivation expertise from leading cyano scientist Prof. Wilde</h1>
| + | |
− | <button type="button" onclick="hide('rbn432')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <section class="section">
| + | |
− | <div>
| + | |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | While working with the cyanobacterium <i>Synechococcus elongatus</i> UTEX 2973 we noticed a lack of | + | Burning forests, melting ice. With greenhouse gases as a global threat to our climate we need a |
− | standardization in the field of Synthetic Biology very quickly. To tackle this huge problem, we | + | multitude of ways to solve this issue. One of the biggest challenges in the future will be |
− | decided to focus as one of our main goals on standardization to make scientific results more | + | nutrition: the UN expects the world population to rise to 10 billion by 2050. Without genetically |
− | comparable. Therefore, we worked on standardizing light measurement, cultivating parameters
| + | engineered crops it will be very hard to nourish such a huge population.<br> |
− | (temperature, CO2, rpm, …) and the cultivation media for cyanobacteria, especially UTEX 2973.<br> | + | |
| <br> | | <br> |
− | </p>
| + | We met Nina Scheer from the Social Democratic Party of Germany (SPD) one month before our panel |
− | <figure style="float: left; margin-right: 25px;">
| + | discussion to bring politics and science closer together. In particular, we discussed green genetic |
− | <img style="height: 500px; width: 650px" | + | engineering. Like most of germany’s political parties Nina Scheer and the SPD are in suspicion about |
− | src="https://static.igem.org/mediawiki/2019/b/bb/T--Marburg--Wilde_and_us.jpg" alt="Placeholder image">
| + | genetic engineering. A general fear for possible consequences is holding innovation at stagnation, |
− | <figcaption style="max-width: 650px">
| + | preventing any further development and leaving important key technologies to global competitors.<br> |
− | Fig.1 - Prof. Dr. Annegret Wilde and our team members Vinca, Marian and Robin standind infron of
| + | |
− | the botanical garden in Freiburg.
| + | |
− | </figcaption>
| + | |
− | </figure>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | During the theoretical planning of our project we contacted scientists in research and industry that
| + | |
− | are specialists for cyanobacteria. As a result, Prof. Dr. Annegret Wilde (Institute of Biology,
| + | |
− | Albert-Ludwigs-University Freiburg) answered our call and was very interested in advising us in
| + | |
− | regards to our projects. In order to give us an introduction to the handling of cyanobacteria, she | + | |
− | invited us to her institute at the University of Freiburg on 5th and 6th June 2019. In a short and | + | |
− | focused internship we were able to quickly gain a set of core competencies regarding sterile | + | |
− | inoculation, streaking of cyano cultures and further information regarding the cultivation conditions | + | |
− | which we applied to our strain.<br>
| + | |
| <br> | | <br> |
− | In addition, we also learned that the measurement of light intensity is an important topic. There is a | + | As we told Scheer about our project she was convinced of our good spirit and supported the idea that |
− | variety of measuring instruments and different methods for each, which means that information on light
| + | the state should put more money into research, rather than us relying on third-party funds. |
− | intensities should be viewed with caution. For cyanobacteria such as Synechococcus elongatus UTEX 2973 | + | Nonetheless did Scheer see a trust issue concerning irreversible damages to nature and humankind as |
− | light intensity plays a decisive role, which is why we analysed differences between a variety of | + | well as a lack of good control mechanisms when using green genetic engineering. At the example of |
− | instruments and methods to establish a standard for light measurement based on our results. <b>(LINK | + | Contergan® Scheer highlighted the challenges of uncertainty. We learned that we as scientists have |
− | Light measurement)</b>.<br>
| + | the duty to proof the unmitigated safety of our products and beyond that not only proof it to our |
− | <br> | + | own community but also to bring this trust to society as a whole if we want our research to have an |
− | In further discussions about our Marburg Collection 2.0 we were recommended to take a very close look
| + | impact on reality.<br> |
− | at terminators as they oddly enough have an effect on the transcription of upstream genes. As a
| + | |
− | result, we decided to take a closer look at that and investigated their effects. We thank Professor A. | + | |
− | Wilde for her input, her invitation to Freiburg and her recommendations that guided us in our project. | + | |
− | <b>(LINK terminators??)</b><br> | + | |
| <br> | | <br> |
| + | We thank Nina Scheer for this opportunity to discuss major issues of our time.<br> |
| </p> | | </p> |
− | </section>
| + | </section> |
| + | </div> |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div class="sub" onclick="popup('rbn412')"> |
− | <div class="sub" onclick="popup('rbn433')">
| + | <div class="sub-header"> |
− | <div class="sub-header">
| + | <h1> |
− | <h1>
| + | P L A N T   M A R K E T |
− | D O U L I X<br>
| + | </h1> |
− | </h1>
| + | <hr> |
− | <hr>
| + | |
− | </div>
| + | |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Another justification for real case use for our colony picking project. | + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn433" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Doulix</h1>
| + | |
− | <button type="button" onclick="hide('rbn433')">X</button> | + | |
| </div> | | </div> |
− | <div class="popup-content" style="text-align: justify;"> | + | <div class="sub-content"> |
− | <section class="section"> | + | <p> |
| + | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
| + | </p> |
| + | </div> |
| + | </div> |
| + | <div id="rbn412" class="popup"> |
| + | <div class="popup-container"> |
| + | <div class="popup-header"> |
| + | <h1 class="title">Plant Market</h1> |
| + | <button type="button" onclick="hide('rbn412')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| <div> | | <div> |
− | <p style="text-align: center; margin-bottom: 1em;">
| |
− | “My major bottleneck is colony picking.” - <b>Davide De Lucrezia</b>, Managing Director of
| |
− | Doulix</p>
| |
− | <br>
| |
− | <br>
| |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | The vision of automating colony picking has existed now for many years. Big companies like Tecan, | + | We advertised our panel discussion by running a booth at the plant breeders festival in Marburg on the |
− | Singer Instruments or Hudson Robotics invented robots those are able to identify and pick colonies.
| + | weekend of 14th September. It is an event for young and old people alike and the perfect platform to |
− | The problem is that they cost a fortune, starting at 50,000€ up to 100,000€ or even more. Although
| + | bring our discussion closer to a diverse audience.<br> |
− | it is highly desired, a low cost solution is still missing for this tedious task. Start-ups like
| + | |
− | Doulix are currently automating such workflows in their laboratories, but they do not have the funds
| + | |
− | to finance a state-of-the-art colony picking robot. By now every single step has to be performed | + | |
− | manually, draining resources from other departments, which actually should be paid more attention
| + | |
− | to. “Colony picking is a bottleneck in every of part our workflows” says Davide De Lucrezia, the
| + | |
− | founder and managing director of Doulix. Doulix focuses on developing innovative technologies for
| + | |
− | scientists to simplify their work, especially in the field of synthetic biology, and they are
| + | |
− | currently planning on establishing Opentrons OT-2 in their lab to automate the most part of their | + | |
− | workflows.<br>
| + | |
| <br> | | <br> |
− | During an online conference with Davide De Lucrezia, Sota Hirano, and Alessandro Filisetti from | + | When we talked with Nina Scheer, member of the german Bundestag from the Social Democrat Party, she |
− | Doulix, Davide suggested that turning the OT-2 into a colony picker as a project would be really | + | told |
− | interesting. To have a fully trained, ready to use package to turn the OT-2 into a colony picker | + | us that a large part of the population has a very critical attitude towards genetically modified food. |
− | would enhance the workflow at Doulix tremendously. Nevertheless, to suit the user needs as well as | + | We are convinced that the main reason for this critical attitude is a lack of information and |
− | to get this job done in the spirit of Opentrons, installing the needed add-ons should be as modular | + | communication between scientists and the public that leads to insecurities in the population. In order |
− | and flexible as possible and designed so that “even a biologist” without technical knowledge or | + | to get a picture of the public opinion on genetic engineering, we asked the participants to fill out a |
− | programming would be able to install and use them.<br> | + | questionnaire, which we then statistically evaluated. We realized that in particular middle-aged and |
| + | older people have a critical view on genetic engineering or tend to say from themselves that they |
| + | don't |
| + | know enough about it and would like to hear more. Through personal discussions we were able to get in |
| + | contact with people, raise awareness on the issue and also learned a lot ourselves about the landscape |
| + | of opinions.<br> |
| <br> | | <br> |
− | That is where our team came into play. We decided to take this advice to our heart and started to | + | At the same time we gave children and interested adults the chance to take a closer look at our work |
− | work out what was needed to turn the OT-2 into a fully automated colony picking robot.<br> | + | by |
| + | letting them experimentally extract DNA from pepper. We used this to also explain to the children what |
| + | DNA is, what it means to them and what exactly they were doing in each step.<br> |
| + | <br> |
| + | Due to the contact and discussion with people from the general society and especially outside of our |
| + | university background the plant breeder festival expanded our knowledge and we therefore view it as a |
| + | great success. We received a lot of positive feedback and spoke personally with many supporters and |
| + | critics of genetic engineering and took away some lively discussions. In addition, we were able to |
| + | evaluate around 200 questionnaires and further promote our panel discussion. This was demonstrated by |
| + | the run on our subsequent panel discussion, where were happy to recognize some familiar faces from the |
| + | festival.<br> |
| + | <br> |
| + | <b>Evaluation</b> |
| + | In our questionnaire, we first had the participants assess their current state of knowledge about |
| + | genetic engineering and divided the question into gender, age and basic attitude.<br> |
| + | <br> |
| + | |
| + | As far as gender is concerned, most of the participants rated themselves in the criteria as |
| + | "rather bad" and "medium". Men consider themselves to be better informed than women. Especially in |
| + | the |
| + | category "very good" it is mainly men, while in the category "very bad" it is mostly women, |
| + | regarding |
| + | their self-assessment. It is possible that men are more self-confident in this aspect and thus, |
| + | consider |
| + | themselves to be better informed.<br> |
| <br> | | <br> |
| </p> | | </p> |
− | <figure style="float: right; margin-left: 25px;"> | + | <figure style="text-align:center;"> |
− | <img style="height: 400px; width: 600px" | + | <div style="display:flex; flex-direction: row"> |
− | src="https://static.igem.org/mediawiki/2019/f/f8/T--Marburg--doulix.png"
| + | <img style="height: 250px; width:425px; margin-bottom: 10px" |
− | alt="Connections between Opentrons, Promega and QInstruments"> | + | src=https://static.igem.org/mediawiki/2019/e/e6/T--Marburg--plant-market-sex.jpg alt="sex"> |
− | <figcaption style="max-width: 600px"> | + | <img style="height: 250px; width:425px; margin-bottom: 10px" |
− | Fig.1 - iGEM team Marburg 2019 meeting with Davide De Lucrezia (left), Sota Hirano (middle) and | + | src=https://static.igem.org/mediawiki/2019/f/f3/T--Marburg--plant-market-age.jpg alt="sex"> |
− | Alessandro Filisetti (right) in a Zoom teleconference to discuss advanced automated workflows in
| + | <img style="height: 250px; width:425px; margin-bottom: 10px" |
− | the lab. | + | src=https://static.igem.org/mediawiki/2019/1/1e/T--Marburg--survey_viewvsknowledge.png alt="sex"> |
− | </figcaption>
| + | </div> |
| + | <div style="display:flex; flex-direction: row"> |
| + | <figcaption stye="max-width: 400px">Fig.1 - Answers analyzed by gender for the question "How |
| + | knowledgable are you about gene |
| + | editing?".</figcaption> |
| + | <figcaption stye="max-width: 400px">Fig.2 - Answers analyzed by age for the question "How |
| + | knowledgable |
| + | are you about gene |
| + | editing?".</figcaption> |
| + | <figcaption stye="max-width: 400px">Fig.3 - Answers analyzed by attitude towards gene editing. |
| + | </figcaption> |
| + | </div> |
| </figure> | | </figure> |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | One of the first big design questions was whether we wanted to hardcode an image recognition | + | In the category “age”, the average self-assessment is also "rather bad" and"medium". However, |
− | software for the colony detection or if it was a better choice to train a data hungry but - given
| + | younger people (18-29) generally considered themselves to be better informed than older people. A |
− | proper and enough training data - more accurate and scalable artificificial intelligence based
| + | problem is that the older generation mayhave more difficulty reaching information.<br> |
− | colony detection. Kristin Ellis, the director of strategic initiatives at Opentrons referred us to
| + | <br> |
− | Keoni Gandall from Stanford, a well known tinker of the OT-2 for more unconventional applications. | + | It is also noticeable that the participants have a positive attitude towards genetic |
− | He is building a colony picking system himself, however he chose not to rely on an AI. He | + | engineering when they are better informed. This shows that there is not enough information on |
− | recommended us to go with AI he thinks his approach is very prone to changes in parameters. If many | + | genetic |
− | different users want to utilize the same system, a flexible software is required that can take | + | engineering and that it does not reachthe population.<br> |
− | environmental changes into account. We decided to opt for maximum flexibility by working with an | + | |
− | AI.<br> | + | |
| <br> | | <br> |
− | Now that we had an idea of the required software we started to design modular hardware to overcome | + | The first part of our study reveals two problems: bad accessibility of information to the older |
− | potential problems in a fully automated workflow in the OT-2 <b>(LINK see Colony Picking and | + | generation creates a discrepancy between the level of knowledge between younger and older people. As |
− | Hardware)</b>. To illuminate the agar plates in the right way without any distortions we
| + | a |
− | engineered a light table that distributes light equally over the plate.<br> | + | result, older people feel less informed, which in turn leads to skepticism towards genetic |
| + | engineering. |
| + | For example, one can focus the source of information on television/radio or newspaper and thus try |
| + | to |
| + | reach older people more effectively.There is also a problem with the flow of information in general, |
| + | as |
| + | people are obviously better attuned to genetic engineering when they know more about it. Ingeneral, |
| + | there is a need for better information on the subject and more discussionat political level.<br> |
| <br> | | <br> |
− | To give an “eyesight” to the OT-2 we mounted a Raspberry Pi 4 and an ArduCAM on the OT-2 arm. For a | + | We then asked whether the participants considered genetic engineering in plants,animals and humans |
− | better accessibility we created our Graphical User Interface for Directed Engineering (GUIDE). We | + | to be |
− | designed our GUI in a way that will enable every user to train their own AI with their own training
| + | ethically justifiable.<br> |
− | data set so that the AI can be optimized for each specific situation. Moreover the GUI will also
| + | |
− | enable access to users that are not trained in computer/ software engineering.<br> | + | |
| <br> | | <br> |
− | Now that we gave our robot the ability to see, to think and to communicate with us, nothing stood in | + | Most people had a positive attitude towards plants. Here, many people probably recognize the |
− | the way of our own colony picker. We are now able to turn the OT-2 into a colony picker costing
| + | potential, also with regard to the 2050 food problem or resistance to pests.<br> |
− | below $300 <b>(LINK TO COLONY PICKING COST REPORT TABLE)</b>. Moreover, for companies, teams or
| + | |
− | groups who do not own an OT-2 yet, we were able to reduce the costs for purchasing a colony picker | + | |
− | by 90-95%, compared to the listed market prices for traditional colony pickers.<br>
| + | |
| <br> | | <br> |
− | Finally we contacted Doulix the second time to discuss in more details about our project. They | + | Surprisingly, many participants are more likely to agree with genetic engineering in |
− | approved it and gave further suggestions such as “live training” so that the AI will continue to | + | humans than in animals. Most people probably think of thepotential of genetic engineering to fight |
− | learn as it is being used to pick up colonies. Not only will this improve the AI gradually but it | + | serious diseases and thus cure diseases where traditional treatment is not sufficient. In addition, |
− | will also adapt to the specific needs of each user. This leaves a lot of room to improve the project | + | when |
− | in the future.<br> | + | it comes to geneticengineering on animals, some people may think of animal experiments, which many |
| + | consider to be reprehensible. In addition, it is potentially possible to ask people before such |
| + | interventions, while animals have no voice. Our results confirmed us conducting our panel discussion |
| + | to |
| + | create another source of information and to inspire as many people as possible to think about it. We |
| + | hope to be able to educate and hope that the potential of genetic engineeringwill be recognized by |
| + | the |
| + | general public.<br> |
| <br> | | <br> |
| </p> | | </p> |
− | </section>
| + | <figure style="text-align:center;"> |
− | </div>
| + | <div style="display:flex; flex-direction: row"> |
− | </div>
| + | <img style="height: 250px; width:425px; margin-bottom: 10px" |
− | </div>
| + | src=https://static.igem.org/mediawiki/2019/9/9b/T--Marburg--gene_editing_plants_pie.png alt="sex"> |
− | <div class="sub" onclick="popup('rbn435')">
| + | <img style="height: 250px; width:425px; margin-bottom: 10px" |
− | <div class="sub-header">
| + | src=https://static.igem.org/mediawiki/2019/b/bf/T--Marburg--gene_editing_animals_pie.png alt="sex"> |
− | <h1>
| + | <img style="height: 250px; width:425px; margin-bottom: 10px" |
− | S T A N D A R D I Z A T I O N<br>
| + | src=https://static.igem.org/mediawiki/2019/9/9b/T--Marburg--gene_editing_plants_pie.png alt="sex"> |
− | I N   C Y A N O   C O M M U N I T Y
| + | </div> |
− | </h1>
| + | <figcaption style="max-width: 1275px"> |
− | <hr>
| + | Fig.4 - Attitude towrads gene editing in plants.               |
− | </div>
| + |                         |
− | <div class="sub-content">
| + |               |
− | <p>
| + | Fig.5 - Attitude towrads gene editing in |
− | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist.
| + | animals.                           |
− | </p>
| + |             |
− | </div>
| + |         |
− | </div>
| + | Fig.6 - |
− | <div id="rbn435" class="popup">
| + | Attitude towrads gene editing in humans. |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Standardization in Cyanocommunity</h1>
| + | |
− | <button type="button" onclick="hide('rbn435')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <section class="section">
| + | |
− | <div>
| + | |
− | <figure style="float: right; margin-left: 25px;">
| + | |
− | <img style="height: 50ex; width: 75ex"
| + | |
− | src="https://static.igem.org/mediawiki/2019/5/5c/T--Marburg--CyanoCommunity_BG11.png"
| + | |
− | alt="Placeholder image">
| + | |
− | <figcaption style="max-width: 75ex"> | + | |
− | Fig.1 - Growth Curve UTEX 2973 in BG11 and BGM. Medium A: BGM, Medium B: BG11 from Uni Marburg, | + | |
− | Medium C: BG11 from Uni Tübingen, Medium D: BG 11 from Uni Düsseldorf. | + | |
| </figcaption> | | </figcaption> |
| </figure> | | </figure> |
− | <p style="text-align: justify; margin-bottom: 1em;">
| |
− | During our visit at the Cyano Conference 2019 in Tübingen we recognized a need for standardization in
| |
− | this community <b>(link expert talk)</b>. We asked people to send us their BG-11 recipes and
| |
− | surprisingly
| |
− | received several different versions. The community at the conference is aware of the missing
| |
− | standardization and we received very positive feedback for our efforts. Fixed standards are essential
| |
− | for reproducibility of results, especially the preparation of media and buffers but no one is
| |
− | investing time to set a standard. After the cyano conference we stayed in contact with Nicolas
| |
− | Schmelling, coordinator of the bachelor program at CEPLAS. During his PhD he was working on
| |
− | establishing more standards in the cyano community. He tried to establish protocols and collected
| |
− | different methods and recipes to establish a standard for all.<br>
| |
− | <br>
| |
− | After he clarified us the importance of comparable media in context of standards, we started to
| |
− | collect different BG11 recipes and compared them in growing experiments. The following graphic
| |
− | represents our results and shows the impact of different recipes for media.<br>
| |
− | In our experiment we could show that there is a significant difference between the different BG11
| |
− | recipes despite their relative similarity. During our complete project we were working on the
| |
− | standardization for light intensity, media and different cultivating parameters <b>(Link growth curve
| |
− | and
| |
− | measurement)</b>. We made it our destiny to make the first step into the beginning of
| |
− | standardization in
| |
− | the cyano community by providing/establish <i>Synechococcus elongatus</i> with standardized
| |
− | parameters. We
| |
− | were able to find the optimal growing conditions for UTEX 2973 and could show that creating a standard
| |
− | in measurement and methods is really important to have comparable results. With our project we hope
| |
− | that we could set a first step into standardization, so that the future cyano community will have
| |
− | standardized and comparable results.<br>
| |
− | </p>
| |
| </div> | | </div> |
− | </section> | + | </div> |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div class="sub" onclick="popup('rbn413')"> |
− | <div class="sub" onclick="popup('rbn436')">
| + | <div class="sub-header"> |
− | <div class="sub-header">
| + | <h1> |
− | <h1>
| + | P A N E L D I S C U S S I O N |
− | C Y A N O <br>
| + | </h1> |
− | C O N F E R E N C E   2 0 1 9
| + | <hr> |
− | </h1>
| + | |
− | <hr>
| + | |
− | </div>
| + | |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. | + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn436" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">The CYANO 2019 - Standardizing Synthetic Biology</h1>
| + | |
− | <button type="button" onclick="hide('rbn436')">X</button> | + | |
| </div> | | </div> |
− | <div class="popup-content" style="text-align: justify;"> | + | <div class="sub-content"> |
− | <section class="section"> | + | <p> |
− | <div> | + | Our team has organized a panel discussion to see how experts from various fields and the |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | regional population feel about green genetic engineering. |
− | From September 11th to September 13th we attended the CYANO Conference 2019 in Tuebingen funded by
| + | </p> |
− | the VAAM (Vereinigung für Allgemeine und Angewandte Mikrobiologie). During the poster sessions we
| + | |
− | took the chance to present our project and how we revolutionize the upcoming work on phototrophic
| + | |
− | organisms. Therefore, we gained great feedback from the participants, which showed huge interest in
| + | |
− | our toolbox specified for cyanobacteria. Our Synthetic Biology approaches encountered the thinking
| + | |
− | of classical cyanobacterial research which lead to interesting discussions from which we gained a
| + | |
− | lot of input. Furthermore, the leading experts of cyanobacteria offered talks where we learned how
| + | |
− | to modify working on <i>Synechococcus elongatus</i>.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | We were especially interested in the discussions about methods. We soon realized that the
| + | |
− | cyanobacterial scene has no standardized protocols for daily laboratory practices and they are also
| + | |
− | aware of that issue. This started with debates about the media composition of BG-11 media but also
| + | |
− | concerned issues like standardized evaluation of light conditions. With our project for
| + | |
− | standardizing growth conditions and providing a part collection we tackle these major issues for
| + | |
− | scientists studying phototrophic organisms.</p>
| + | |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | |
− | Caused by our thrive for standardization as synthetic biologist, we decided to make a small study in
| + | |
− | the cyano community about standards in handling of cyanobacteria <b>[link standards in cyano
| + | |
− | community]</b>. Due to the results we know about the importance of our intention and will take
| + | |
− | the first step for creating a standard for working with cyanobacteria in synthetic biology.
| + | |
− | </p>
| + | |
− | <figure style="float: left; margin-right: 25px;">
| + | |
− | <img style="height: 600px; width: 1500px"
| + | |
− | src="https://static.igem.org/mediawiki/2019/f/fa/T--Marburg--CyanoConference_Grouptphoto.png"
| + | |
− | alt="Placeholder image">
| + | |
− | <figcaption style="max-width: 1500px">
| + | |
− | Fig.1 - Group photo with our team members Vinca, Hinrik, Jana and all experts of the Cyano
| + | |
− | Conference.
| + | |
− | </figcaption>
| + | |
− | </figure>
| + | |
− | </div>
| + | |
− | </section>
| + | |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div id="rbn413" class="popup"> |
− | <div class="sub" onclick="popup('rbn437')">
| + | <div class="popup-container"> |
− | <div class="sub-header"> | + | <div class="popup-header"> |
− | <h1>
| + | <h1 class="title">Genetic engineering panel discussion report: Blessing or curse</h1> |
− | E X P E R T   O N   C Y A N O S<br>
| + | <button type="button" onclick="hide('rbn413')">X</button> |
− | J A M E S   G O L D E N
| + | </div> |
− | </h1>
| + | <div class="popup-content" style="text-align: justify;"> |
− | <hr>
| + | |
− | </div>
| + | |
− | <div class="sub-content">
| + | |
− | <p>
| + | |
− | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist.
| + | |
− | </p>
| + | |
− | </div>
| + | |
− | </div>
| + | |
− | <div id="rbn437" class="popup">
| + | |
− | <div class="popup-container">
| + | |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Expert on Cyanos - James Golden</h1>
| + | |
− | <button type="button" onclick="hide('rbn437')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <section class="section">
| + | |
| <div> | | <div> |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | While diving deeper and deeper into the ocean of possibilities that cyanobacteria have to offer we | + | Genetic engineering has been a hotly debated topic in politics as well as in society in the past |
− | noticed a few inconsistencies in literature.<br> | + | decades and still is today. New methods in Genome Editing (GE) are making the regulation of methods |
| + | more and more important due to the increased difficulty to identify changes in the genetic material |
| + | of manipulated organisms. The European Court of Justice (ECJ) ruling on GE of July 2018 pleased the |
| + | interest groups of genetic engineering sceptics, but disappointed the research community to a large |
| + | extent. The panel discussion organised by the iGEM team Marburg 2019 with participants from plant |
| + | breeding research, industry, ethics research and genetic engineering critics should give the public |
| + | an insight into the different breeding methods and the according viewpoints of different |
| + | stakeholders. After a keynote lecture by biochemist Prof. Dr. Lars-Oliver Essen from Philipps |
| + | University in Marburg the panel discussion started. It was moderated by Michael Lange of "Forschung |
| + | aktuell" from Deutschlandfunk and team member Paula Mueller. The energetic audience, in which all |
| + | age groups were represented, soon actively took part in the discussion, asked questions and |
| + | criticized statements of the discussants on stage.<br> |
| <br> | | <br> |
− | BG11 media is commonly used in cyanobacterial research, but the exact composition seemed to be | + | In his keynote lecture, Prof. Dr. Lars-Oliver Essen tried to convey the scientific context of the |
− | different across every second paper we read. Optical densities are more frequently measured at a
| + | evening to the audience. Using various common plants, such as bananas and carrots, he illustrated |
− | wavelength of 730nm, though 750nm seems to be the better choice. For <i>Synechococcus elongatus</i>
| + | the products of classical breeding methods through human selection. All the species mentioned above |
− | UTEX 2973
| + | originate from primitive types, which differ from today's food plants, for example by an enormously |
− | the “optimal growth conditions” according to literature are often quite different; some state 38°C and
| + | lower proportion of fruit flesh. He then outlined the differences between more modern breeding |
− | 500µE at a CO2 level of 3% fits best, others prefer 41°C and 1500µE with 5% CO2 concentration.
| + | methods such as chemical mutagenesis or radiation and genetic tools such as the headline-making |
− | But how are these light intensities measured? With a planar device or a spherical one? We have not
| + | CRISPR genetic scissors. At the end of his keynote lecture, Prof. Dr. Essen outlined the ECJ ruling |
− | seen this being explained in literature.<br>
| + | of July 2018 and gave an outlook on topics that influence the genetic engineering discussion, such |
− | <br>
| + | as the population growth of mankind and the patenting of modern genetic engineering methods as well |
− | As all of these things have an incredibly huge impact on various different experiments we saw the need
| + | as the resulting products.<br> |
− | to find a standardized answer to our questions, reaching out to as many experts in this field as we | + | |
− | could reach - whether it was industry or research.
| + | |
− | One of the leading laboratories working with cyanobacteria is the Golden Lab of the UC San Diego.
| + | |
− | Susan Golden and her husband James W. Golden have both been working with cyanobacteria for quite some
| + | |
− | time, now with a stronger focus on their use for industrial purposes.
| + | |
− | We set up a Skype call with them, but sadly Susan Golden was not able to join us on short notice.<br>
| + | |
− | <br>
| + | |
− | During our talk with James W. Golden we laid open our concerns about the cyanobacterial community and
| + | |
− | he quickly supported our train of thoughts, as he himself noticed a lack of standardization. He
| + | |
− | assured us that this is a hot topic in this field of research, as many do not seem to care enough | + | |
− | about the reproducibility of their data and encouraged us to continue with our efforts.<br>
| + | |
− | <br> | + | |
− | More accurately, he talked with us about why he thinks there is still no clear decision on whether to
| + | |
− | measure optical densities at 730nm or 750nm: It might be a technical problem, as many photometers are
| + | |
− | simply not able to measure wavelengths of 750nm. In contrast, he mentioned that 750nm would be the | + | |
− | more optimal way, as it proves to minimize absorbance from pigments in cyanobacterial cells, | + | |
− | presenting more accurate data. This confronted us with a conflicting decision: Would it be better to
| + | |
− | use the more accurate 750nm or 730nm, as the latter would allow more labs all over the world to
| + | |
− | measure in the same way.<br> | + | |
− | <br>
| + | |
− | This was one of the key factors that led us to measure the whole spectrum of our cultures for our
| + | |
− | growth curves, as this would provide a larger dataset, awarding us not just with 730nm and 750nm data,
| + | |
− | but also the possibility to check if the spectrum shows normal behavior, from which one could conclude
| + | |
− | how healthy the cultures are.<br> | + | |
− | <br>
| + | |
− | Another important issue we were able to discuss with Professor Golden is the composition of BG11
| + | |
− | media. While working in our own lab we already got the notion that not all BG11 media are prepared in
| + | |
− | the same way, which is the reason why we kindly asked other researchers - like James Golden - to send
| + | |
− | us their recipes. In order to compare the various ways the BG11 media can be prepared, we tried those | + | |
− | recipes and measured growth curves to find the perfect fit.<br> | + | |
| <br> | | <br> |
| </p> | | </p> |
− | <figure style="text-align: center"> | + | <figure style="float: left; margin-right: 25px;"> |
| <img style="height: 50ex; width: 75ex" | | <img style="height: 50ex; width: 75ex" |
− | src="https://static.igem.org/mediawiki/2019/8/85/T--Marburg--JG_dif_media.png" alt="JG dif media">
| + | src="https://static.igem.org/mediawiki/2019/9/9e/T--Marburg--Paneldiscussion_Mikro.jpg" |
− | <img style="height: 50ex; width: 75ex"
| + | alt="Placeholder image"> |
− | src="https://static.igem.org/mediawiki/2019/9/94/T--Marburg--JG_dif_media_log.png" | + | <figcaption style="max-width: 75ex"> |
− | alt="JG dif media log"> | + | Fig.1 - Our team member Lars giving the microphone to one of the viewers, that everyone can |
− | <figcaption style="max-width: 150ex;"> | + | hear his question. |
− | Fig.1 - (Left) Growth of S. elongatus UTEX 2973 in different media. (Right) Growth of S. elongatus | + | |
− | UTEX 2973 in different media (log-scale). | + | |
| </figcaption> | | </figcaption> |
| </figure> | | </figure> |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | It was clear that the growth of our cultures was comparably fast at the beginning no matter what media | + | Most of the panelists agreed that genetic engineering offers opportunities, especially in |
− | was used, but one of them stood out: BGM - it enabled faster growth at higher ODs, allowing cultures | + | agriculture, to address challenges such as climate change or the nutrition of the growing world |
− | to reach double the OD of other cultures after the same time.<br> | + | population. According to the introductory statement of Prof. Dr. Andreas Weber from the Plant |
| + | Science Excellence Cluster at Heinrich-Heine University in Düsseldorf, methods of genetic |
| + | engineering such as CRISPR are already established tools and have no cause for concern, particularly |
| + | in basic research. But subsequently, modified organisms cannot be tested in the field under natural |
| + | conditions. However, the objective testing and checking of modified plants is a problem, because |
| + | often independent testing organisations would not have access to certified seeds and the complete |
| + | data used in the designing process, replied Dr. Christoph Then from testbiotech e.V.<br> |
| <br> | | <br> |
− | We are certain that having the same ideal medium throughout different cyano labs is not just elemental | + | It was also discussed whether the product or the manufacturing process should serve as the basis for |
− | for optimal growth, but also vital for comparability, as trying to reproduce the growth conditions of | + | evaluation. Since a plant modified by GE methods cannot be distinguished from a plant cultivated by |
− | papers can be quite tricky when it is not clear what exact medium was used and how it was | + | established breeding methods, the product should be the basis of the review, argued Daniel |
− | prepared.<br> | + | Stukenberg, representative of the party "The Humanists". A point of view with a drastically |
| + | different background, here represented by ethics professor Dr. Friedemann Voigt, put the consumer in |
| + | the foreground and demanded its right to know how a food is produced. This led the discussion |
| + | further in the direction of the effects of genetically modified feed on farm animals and the human |
| + | consumer. At this point, Dr. Christoph Then criticised the sharp decline in risk research, which |
| + | pursues society's protective goals with regard to health.<br> |
| + | <br> |
| + | The podium also separated into simple gene edited and transgenic organisms. While gene edited plants |
| + | do not contain genes from foreign organisms, such genes in transgenic plants can, for example, |
| + | provide certain ingredients that make them resistant to pests or insecticides/herbicides. Transgenic |
| + | plants must be assessed with special attention and in each unique case, since the individual |
| + | composition of the ingredients is specific for each modified organism. This point also met with the |
| + | approval of the audience, which was expressed by strong applause. Transgenic plants could not |
| + | develop in a natural way and should therefore not be used in agriculture. At the moment, however, |
| + | the use of genetically modified plants in organic farming is also not in compliance with the |
| + | regulations, according to Freya Schäfer of FiBL (Research Institute of Organic Agriculture).<br> |
| <br> | | <br> |
| </p> | | </p> |
| <figure style="float: right; margin-left: 25px;"> | | <figure style="float: right; margin-left: 25px;"> |
| <img style="height: 50ex; width: 75ex" | | <img style="height: 50ex; width: 75ex" |
− | src="https://static.igem.org/mediawiki/2019/e/e8/T--Marburg--JG_dif_measurements.png" alt="JG dif media"> | + | src="https://static.igem.org/mediawiki/2019/e/e1/T--Marburg--Paneldiscussion_Podium.jpg" |
− | <figcaption style="max-width: 75ex;"> | + | alt="Placeholder image"> |
− | Fig.2 - Growth of S. elongatus UTEX 2973 at 1500µE measured with different methods. | + | <figcaption> |
| + | Fig.2 - Recording of the panelists in the middle of arguing with the viewers. |
| </figcaption> | | </figcaption> |
| </figure> | | </figure> |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | This problem, as stated before, applies not only to media, but also for the measurement of light | + | Prof. Dr. Friedemann Voigt continued to ensure the ethical part of the discussion. He noted that |
− | intensities. In the beginning we measured the light intensity of our incubators with a planar | + | compared to the rest of the world, there is a certain mistrust towards genetic engineering, |
− | measurement device - the only one available for us. Talking to James Golden we realized that we should | + | especially in Europe. One had to estimate the risks against the opportunities, whereby he mainly |
− | try to get hold of a spherical measurement device, as he assured us that this is the way to generate | + | identified an acceptance problem in the population, which could not be met scientifically. However, |
− | more accurate data, leading to a more reproducible setup - exactly what we were aiming for.<br> | + | there is not only distrust of genetic engineering, but also of the economic motivation to use it. |
| + | Dr. Claus Kremoser expressed concerns about seed companies with patent monopolies that could promote |
| + | large monocultures. Nevertheless, the development and application of genetic engineering is strongly |
| + | dependent on the respective motivation: patents are the driving force in the industry while in the |
| + | scientific community it is the pressure to publicise. Too strict and thus very costly requirements |
| + | for the testing of genetically modified organisms make it impossible for small companies to |
| + | participate in the competition. Consequently, strong regulation would lead to a few large |
| + | monopolies.<br> |
| <br> | | <br> |
− | After acquiring such a device, we again implemented the feedback we got and measured growth curves. | + | The discussion ended with the consensus that genetic engineering in agriculture should be regulated |
− | One with cultures at 1500µE measured with a spherical device and one with 1500µE measured with a | + | responsibly and objectively. However, due to ideological blockades and diffuse fears in society and |
− | planar device, where the measured intensities were converted to theoretically spherical values with a | + | among political influencers, a meaningful willingness to compromise was very low.<br> |
− | conversion chart offered to us by Prof. Dr. Annegret Wilde from the University of Freiburg.<br>
| + | |
| <br> | | <br> |
− | These experiments were a huge step in our project, as they heavily influenced the way we cultured our
| |
− | cyanobacteria, not only drastically improving their growth, but also clearly demonstrating how flawed
| |
− | certain measurements can be.
| |
− | We would never have been able to reach the fast doubling times we achieve now without this crucial
| |
− | input and as this will be the case for others too, we made it our mission to keep on stressing the
| |
− | importance of this way of measurement whenever we reach out to the scientific community.
| |
− | Again, thank you very much Prof. Dr. James W. Golden for your invaluable contribution!
| |
| </p> | | </p> |
| </div> | | </div> |
− | </section> | + | </div> |
| </div> | | </div> |
| </div> | | </div> |
− | </div> | + | </section> |
− | <div class="sub" onclick="popup('rbn438')"> | + | </div> |
− | <div class="sub-header">
| + | <hr> |
− | <h1>
| + | <div style="margin-top: 10vh;"> |
− | O P E N T R O N<br>
| + | <h1 class="title">Integrated Human Practices</h1> |
− | +   K E O N I
| + | <section class="section grid"> |
− | </h1>
| + | <div class="sub" onclick="popup('rbn431')"> |
− | <hr>
| + | <div class="sub-header"> |
| + | <h1> |
| + | C Y A N O<br> |
| + | B I O T E C H |
| + | </h1> |
| + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
| + | </p> |
| + | </div> |
| </div> | | </div> |
− | <div class="sub-content"> | + | <div id="rbn431" class="popup"> |
− | <p>
| + | <div class="popup-container"> |
− | One of the earlier inspiration for our colony picking project.
| + | <div class="popup-header"> |
− | </p>
| + | <h1 class="title">Cyano Biotech</h1> |
− | </div>
| + | <button type="button" onclick="hide('rbn431')">X</button> |
− | </div>
| + | </div> |
− | <div id="rbn438" class="popup">
| + | <div class="popup-content" style="text-align: justify;"> |
− | <div class="popup-container">
| + | <section class="section"> |
− | <div class="popup-header">
| + | |
− | <h1 class="title">Opentron + Keoni</h1>
| + | |
− | <button type="button" onclick="hide('rbn438')">X</button>
| + | |
− | </div>
| + | |
− | <div class="popup-content" style="text-align: justify;">
| + | |
− | <section class="section">
| + | |
− | <div>
| + | |
− | <p style="text-align: center; margin-bottom: 1em;">
| + | |
− | “A colony picking module for the OT-2 will be a great help” - <b>Keoni Gandall </b></p>
| + | |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
− | We started with the colony picking project back in December 2018. Since from the beginning we know | + | Cyano Biotech is one of the leading, top edge companies to work with sustainable and product-oriented |
− | that we have to involve Opentrons in the conversation, because we are working on a colony picking | + | phototrophic bacteria in Germany. As a shining figure in cyanobacterial metabolic engineering, the CEO |
− | extension module for the OT-2. We contacted Kristin Ellis from Opentrons and this turned out to be the | + | of Cyano Biotech Dr. Dan Kramer talked with us about the possibilities of our project. His feedback |
− | right approach for us, because Kristin is very familiar with the OT-2 community. She has been a big | + | led |
− | help to us ever since by bridging us with Opentrons’ technical experts or other kinds of resources. At | + | us to the design of adjusting specific parameters in our growth experiment and to the integration of |
− | the time Kristin told us that colony picking is a big topic in the OT-2 community and gave us a few | + | our |
− | contacts, among them: Keoni Gandall.<br> | + | terminator library. Through our talk with a potential end user of our Green Expansion and our |
| + | engineered |
| + | strains, we achieved a more “real-world” focus of our project.<br> |
| <br> | | <br> |
− | Keoni Gandall is a bio-hacker who is determined to open source systems in Synthetic Biology. He is an | + | As our project was in its beginning, one thing was clear: high throughput methods are essential for |
− | avid user of the OT-2 because of the philosophy that OT-2 embodies: an affordable, and open-source | + | any |
− | pipetting robot. Colony picking is a big part of a cloning workflow, whose automation involves a lot | + | viable chassis in Synthetic Biology. Sadly, we quickly notice obstacles in our way, such as inhibited |
− | of cost. There is yet to be an affordable solution for colony picker, and Keoni believes that OT-2 has | + | growth in our plates compared to flasks. In consequence of that, we looked for help and who would be |
− | the potential to fill this gap. When we mentioned our colony picking project to Keoni, it directly | + | better, than a expert on that specific field? We talked with Dan Kramer and he kindly provided us with |
− | resonated with him, and this gave us an extra justification for our project: this is what the | + | Data in his own well plate experiments. Soon we notice, that he inoculated cultures several times in a |
− | community wants and needs. We listened to the community and let it shape our project. Since then we
| + | row out of the exponential phase, leading to a huge boost in doubling times. Through this support we |
− | have been keeping in touch with Keoni and exchanging tips and tricks for the OT-2.<br>
| + | were able to design and conduct a growth curve with as much as five pre cultures.<br> |
| <br> | | <br> |
| + | Aside from that, we talked about another facet of our project. |
| + | Again the strong impact of terminators, through its shadow above our talk. Yet another expert in the |
| + | field of cyanobacteria, stating that in his nearly half a decade of research life that terminators are |
| + | easily overread in cyanobacteria, both metaphorically and for real, and are one of the most important |
| + | regulatory genetic elements. As he was found of our idea to set on the search for the best terminator, |
| + | he strongly encourage us to utilize the Green Expansion to the full extent. So we set to the journey |
| + | of |
| + | called for a terminator library.<br> |
| </p> | | </p> |
− | </div>
| + | </div> |
− | </section>
| + | |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div class="sub" onclick="popup('rbn432')"> |
− | <div class="sub" onclick="popup('rbn439')">
| + | <div class="sub-header"> |
− | <div class="sub-header">
| + | <h1> |
− | <h1>
| + | P R O F. D R.<br> |
− | P R O M E G A<br>
| + | A N N E G R E T   W I L D E |
− | </h1> | + | </h1> |
− | <hr> | + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | Cultivation expertise from leading cyano scientist Prof. Wilde |
| + | </p> |
| + | </div> |
| </div> | | </div> |
− | <div class="sub-content"> | + | <div id="rbn432" class="popup"> |
− | <p>
| + | <div class="popup-container"> |
− | Automating plasmid purification protocol with the OT-2.
| + | <div class="popup-header"> |
− | </p>
| + | <h1 class="title">Cultivation expertise from leading cyano scientist Prof. Wilde</h1> |
| + | <button type="button" onclick="hide('rbn432')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| + | <section class="section"> |
| + | <div> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | While working with the cyanobacterium <i>Synechococcus elongatus</i> UTEX 2973 we noticed a lack of |
| + | standardization in the field of Synthetic Biology very quickly. To tackle this huge problem, we |
| + | decided to focus as one of our main goals on standardization to make scientific results more |
| + | comparable. Therefore, we worked on standardizing light measurement, cultivating parameters |
| + | (temperature, CO2, rpm, …) and the cultivation media for cyanobacteria, especially UTEX 2973.<br> |
| + | <br> |
| + | </p> |
| + | <figure style="float: left; margin-right: 25px;"> |
| + | <img style="height: 500px; width: 650px" |
| + | src="https://static.igem.org/mediawiki/2019/b/bb/T--Marburg--Wilde_and_us.jpg" alt="Placeholder image"> |
| + | <figcaption style="max-width: 650px"> |
| + | Fig.1 - Prof. Dr. Annegret Wilde and our team members Vinca, Marian and Robin standind infron of |
| + | the botanical garden in Freiburg. |
| + | </figcaption> |
| + | </figure> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | During the theoretical planning of our project we contacted scientists in research and industry that |
| + | are specialists for cyanobacteria. As a result, Prof. Dr. Annegret Wilde (Institute of Biology, |
| + | Albert-Ludwigs-University Freiburg) answered our call and was very interested in advising us in |
| + | regards to our projects. In order to give us an introduction to the handling of cyanobacteria, she |
| + | invited us to her institute at the University of Freiburg on 5th and 6th June 2019. In a short and |
| + | focused internship we were able to quickly gain a set of core competencies regarding sterile |
| + | inoculation, streaking of cyano cultures and further information regarding the cultivation |
| + | conditions |
| + | which we applied to our strain.<br> |
| + | <br> |
| + | In addition, we also learned that the measurement of light intensity is an important topic. There is |
| + | a |
| + | variety of measuring instruments and different methods for each, which means that information on |
| + | light |
| + | intensities should be viewed with caution. For cyanobacteria such as Synechococcus elongatus UTEX |
| + | 2973 |
| + | light intensity plays a decisive role, which is why we analysed differences between a variety of |
| + | instruments and methods to establish a standard for light measurement based on our results. <b>(LINK |
| + | Light measurement)</b>.<br> |
| + | <br> |
| + | In further discussions about our Marburg Collection 2.0 we were recommended to take a very close |
| + | look |
| + | at terminators as they oddly enough have an effect on the transcription of upstream genes. As a |
| + | result, we decided to take a closer look at that and investigated their effects. We thank Professor |
| + | A. |
| + | Wilde for her input, her invitation to Freiburg and her recommendations that guided us in our |
| + | project. |
| + | <b>(LINK terminators??)</b><br> |
| + | <br> |
| + | </p> |
| + | </section> |
| + | </div> |
| + | </div> |
| </div> | | </div> |
− | </div>
| + | <div class="sub" onclick="popup('rbn433')"> |
− | <div id="rbn439" class="popup">
| + | <div class="sub-header"> |
− | <div class="popup-container">
| + | <h1> |
− | <div class="popup-header"> | + | D O U L I X<br> |
− | <h1 class="title">Promega</h1> | + | </h1> |
− | <button type="button" onclick="hide('rbn439')">X</button> | + | <hr> |
| </div> | | </div> |
− | <div class="popup-content" style="text-align: justify;"> | + | <div class="sub-content"> |
− | <section class="section"> | + | <p> |
− | <div>
| + | Another justification for real case use for our colony picking project. |
− | <figure style="float: right; margin-left: 25px;">
| + | </p> |
− | <img style="height: 400px; width: 600px"
| + | </div> |
− | src="https://static.igem.org/mediawiki/2019/b/b4/T--Marburg--margarethe_schwarz.jpg"
| + | </div> |
− | alt="Placeholder image">
| + | <div id="rbn433" class="popup"> |
− | <figcaption style="max-width: 600px">
| + | <div class="popup-container"> |
− | Fig.1 - Margarethe Schwarz visiting the iGEM team Marburg 2019 to watch the OT-2 perform a plasmid
| + | <div class="popup-header"> |
− | purification using the Promegas Wizard® MagneSil® Plasmid Purification System.
| + | <h1 class="title">Doulix</h1> |
− | </figcaption>
| + | <button type="button" onclick="hide('rbn433')">X</button> |
− | </figure> | + | </div> |
− | <p style="text-align: justify; margin-bottom: 1em;">
| + | <div class="popup-content" style="text-align: justify;"> |
− | When the iGEM year started, we thought about how we could ease the work in the lab using our OT-2. We
| + | <section class="section"> |
− | decided automating the cloning process would be a great idea and soon got into contact with Promega to
| + | <div> |
− | tell them about our vision. Margarete Schwarz, area manager of southwest germany, and Nans Bodet, a
| + | <p style="text-align: center; margin-bottom: 1em;"> |
− | Field Support Scientist (FSS) from the automation department at Promega, were both convinced that the
| + | “My major bottleneck is colony picking.” - <b>Davide De Lucrezia</b>, Managing Director of |
− | automation of the cloning workflow would be a challenge, but with creativity and some work it would be
| + | Doulix</p> |
− | a major breakthrough and a great tool for everyone with access to an OT-2.<br>
| + | |
| <br> | | <br> |
− | In a skype call both agreed that they would love to see Promegas Wizard® MagneSil® Plasmid
| |
− | Purification System integrated into the workflow, being Promegas very first automated workflow in
| |
− | Opentrons OT-2 and the first protocol for plasmid purification in a large collection of Opentrons
| |
− | protocols. Promega covered our costs in terms of kits we needed for the protocols so we could focus on
| |
− | optimizing the workflow.<br>
| |
| <br> | | <br> |
− | We performed the plasmid purification a few times manually, so we would get familiar with the whole | + | <p style="text-align: justify; margin-bottom: 1em;"> |
− | workflow and get a feeling where problems in the automated process could arise. We were in regular
| + | The vision of automating colony picking has existed now for many years. Big companies like Tecan, |
− | contact with Nans and he gave great advice on how to automate the shaking process in the OT-2 and that
| + | Singer Instruments or Hudson Robotics invented robots those are able to identify and pick colonies. |
− | we would need the 8-channel pipette to scale up the number of samples that could be handled with our
| + | The problem is that they cost a fortune, starting at 50,000€ up to 100,000€ or even more. Although |
− | protocol. For the shaker he told us to get in contact with QInstruments, a company which designs and
| + | it is highly desired, a low cost solution is still missing for this tedious task. Start-ups like |
− | builds small shakers that are simultaneously capable of heating and cooling the samples. Thanks to
| + | Doulix are currently automating such workflows in their laboratories, but they do not have the funds |
− | recommendations from Nans a member of their support team, Ralf Paetzold, wrote us back and kindly
| + | to finance a state-of-the-art colony picking robot. By now every single step has to be performed |
− | helped us to secure a permanent loan for the BioShake D30-T elm back in June. Through a grant our team
| + | manually, draining resources from other departments, which actually should be paid more attention |
− | won, we were able to purchase the 8-channel pipette arm.<br>
| + | to. “Colony picking is a bottleneck in every of part our workflows” says Davide De Lucrezia, the |
− | <br>
| + | founder and managing director of Doulix. Doulix focuses on developing innovative technologies for |
− | When the shaker arrived, we realized it was a bit bigger than the SPS format for modules in the OT-2
| + | scientists to simplify their work, especially in the field of synthetic biology, and they are |
− | and needed stabilizing support. We designed an adapter for the shaker that is robust enough to
| + | currently planning on establishing Opentrons OT-2 in their lab to automate the most part of their |
− | withstand the forces that occur during intense shaking <b>(LINK TO HARDWARE)</b>.<br>
| + | workflows.<br> |
− | <br>
| + | <br> |
− | Furthermore, Opentron is currently rolling out a major update from their OT-2 3.9 to 4.0 firmware that
| + | During an online conference with Davide De Lucrezia, Sota Hirano, and Alessandro Filisetti from |
− | included a lot of paradigm change. This changed the way had to define our labware and we ended up
| + | Doulix, Davide suggested that turning the OT-2 into a colony picker as a project would be really |
− | defining our shaker module coordinates as a Python dictionary importable via a .json file. After some
| + | interesting. To have a fully trained, ready to use package to turn the OT-2 into a colony picker |
− | calibrations with our OT-2 we were trying to finish the protocol; thankfully Opentron customer service
| + | would enhance the workflow at Doulix tremendously. Nevertheless, to suit the user needs as well as |
− | was patient with us. They told us how to calibrate the OT-2 directly via the terminal because we had
| + | to get this job done in the spirit of Opentrons, installing the needed add-ons should be as modular |
− | some difficulties.<br>
| + | and flexible as possible and designed so that “even a biologist” without technical knowledge or |
− | <br>
| + | programming would be able to install and use them.<br> |
− | In late august Margarete Schwarz paid us a visit, curious about how the plasmid purification with | + | <br> |
− | Promegas Kit would perform and look like in the OT-2. We were also asked to write a <a | + | That is where our team came into play. We decided to take this advice to our heart and started to |
− | style="padding: 0" | + | work out what was needed to turn the OT-2 into a fully automated colony picking robot.<br> |
− | href="https://www.promegaconnections.com/it-takes-a-village-automating-plasmid-purification-for-igem/">blog
| + | <br> |
− | post</a> about | + | </p> |
− | our thoughts and progress on automating plasmid purification for the Promega Connections Blog.<br> | + | <figure style="float: right; margin-left: 25px;"> |
− | <br>
| + | <img style="height: 400px; width: 600px" |
− | By the end of this iGEM year we were able to develop a <a style="padding: 0"
| + | src="https://static.igem.org/mediawiki/2019/f/f8/T--Marburg--doulix.png" |
− | href="https://2019.igem.org/Team:Marburg/Miniprep">working protocol</a> for the single-channel
| + | alt="Connections between Opentrons, Promega and QInstruments"> |
− | pipette for up to 6 samples, as well as a protocol for the 8-channel pipette for up to 48 samples.<br>
| + | <figcaption style="max-width: 600px"> |
− | <br>
| + | Fig.1 - iGEM team Marburg 2019 meeting with Davide De Lucrezia (left), Sota Hirano (middle) and |
− | We are very happy about this fruit bearing interaction, we think both sides profited from this
| + | Alessandro Filisetti (right) in a Zoom teleconference to discuss advanced automated workflows in |
− | cooperation in a big way.
| + | the lab. |
− | </p>
| + | </figcaption> |
− | </div> | + | </figure> |
− | </section> | + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | One of the first big design questions was whether we wanted to hardcode an image recognition |
| + | software for the colony detection or if it was a better choice to train a data hungry but - given |
| + | proper and enough training data - more accurate and scalable artificificial intelligence based |
| + | colony detection. Kristin Ellis, the director of strategic initiatives at Opentrons referred us to |
| + | Keoni Gandall from Stanford, a well known tinker of the OT-2 for more unconventional applications. |
| + | He is building a colony picking system himself, however he chose not to rely on an AI. He |
| + | recommended us to go with AI he thinks his approach is very prone to changes in parameters. If many |
| + | different users want to utilize the same system, a flexible software is required that can take |
| + | environmental changes into account. We decided to opt for maximum flexibility by working with an |
| + | AI.<br> |
| + | <br> |
| + | Now that we had an idea of the required software we started to design modular hardware to overcome |
| + | potential problems in a fully automated workflow in the OT-2 <b>(LINK see Colony Picking and |
| + | Hardware)</b>. To illuminate the agar plates in the right way without any distortions we |
| + | engineered a light table that distributes light equally over the plate.<br> |
| + | <br> |
| + | To give an “eyesight” to the OT-2 we mounted a Raspberry Pi 4 and an ArduCAM on the OT-2 arm. For a |
| + | better accessibility we created our Graphical User Interface for Directed Engineering (GUIDE). We |
| + | designed our GUI in a way that will enable every user to train their own AI with their own training |
| + | data set so that the AI can be optimized for each specific situation. Moreover the GUI will also |
| + | enable access to users that are not trained in computer/ software engineering.<br> |
| + | <br> |
| + | Now that we gave our robot the ability to see, to think and to communicate with us, nothing stood in |
| + | the way of our own colony picker. We are now able to turn the OT-2 into a colony picker costing |
| + | below $300 <b>(LINK TO COLONY PICKING COST REPORT TABLE)</b>. Moreover, for companies, teams or |
| + | groups who do not own an OT-2 yet, we were able to reduce the costs for purchasing a colony picker |
| + | by 90-95%, compared to the listed market prices for traditional colony pickers.<br> |
| + | <br> |
| + | Finally we contacted Doulix the second time to discuss in more details about our project. They |
| + | approved it and gave further suggestions such as “live training” so that the AI will continue to |
| + | learn as it is being used to pick up colonies. Not only will this improve the AI gradually but it |
| + | will also adapt to the specific needs of each user. This leaves a lot of room to improve the project |
| + | in the future.<br> |
| + | <br> |
| + | </p> |
| + | </section> |
| + | </div> |
| </div> | | </div> |
| </div> | | </div> |
− | </div>
| + | <div class="sub" onclick="popup('rbn435')"> |
− | </section>
| + | <div class="sub-header"> |
| + | <h1> |
| + | S T A N D A R D I Z A T I O N<br> |
| + | I N   C Y A N O   C O M M U N I T Y |
| + | </h1> |
| + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
| + | </p> |
| + | </div> |
| + | </div> |
| + | <div id="rbn435" class="popup"> |
| + | <div class="popup-container"> |
| + | <div class="popup-header"> |
| + | <h1 class="title">Standardization in Cyanocommunity</h1> |
| + | <button type="button" onclick="hide('rbn435')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| + | <section class="section"> |
| + | <div> |
| + | <figure style="float: right; margin-left: 25px;"> |
| + | <img style="height: 50ex; width: 75ex" |
| + | src="https://static.igem.org/mediawiki/2019/5/5c/T--Marburg--CyanoCommunity_BG11.png" |
| + | alt="Placeholder image"> |
| + | <figcaption style="max-width: 75ex"> |
| + | Fig.1 - Growth Curve UTEX 2973 in BG11 and BGM. Medium A: BGM, Medium B: BG11 from Uni Marburg, |
| + | Medium C: BG11 from Uni Tübingen, Medium D: BG 11 from Uni Düsseldorf. |
| + | </figcaption> |
| + | </figure> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | During our visit at the Cyano Conference 2019 in Tübingen we recognized a need for standardization |
| + | in |
| + | this community <b>(link expert talk)</b>. We asked people to send us their BG-11 recipes and |
| + | surprisingly |
| + | received several different versions. The community at the conference is aware of the missing |
| + | standardization and we received very positive feedback for our efforts. Fixed standards are |
| + | essential |
| + | for reproducibility of results, especially the preparation of media and buffers but no one is |
| + | investing time to set a standard. After the cyano conference we stayed in contact with Nicolas |
| + | Schmelling, coordinator of the bachelor program at CEPLAS. During his PhD he was working on |
| + | establishing more standards in the cyano community. He tried to establish protocols and collected |
| + | different methods and recipes to establish a standard for all.<br> |
| + | <br> |
| + | After he clarified us the importance of comparable media in context of standards, we started to |
| + | collect different BG11 recipes and compared them in growing experiments. The following graphic |
| + | represents our results and shows the impact of different recipes for media.<br> |
| + | In our experiment we could show that there is a significant difference between the different BG11 |
| + | recipes despite their relative similarity. During our complete project we were working on the |
| + | standardization for light intensity, media and different cultivating parameters <b>(Link growth |
| + | curve |
| + | and |
| + | measurement)</b>. We made it our destiny to make the first step into the beginning of |
| + | standardization in |
| + | the cyano community by providing/establish <i>Synechococcus elongatus</i> with standardized |
| + | parameters. We |
| + | were able to find the optimal growing conditions for UTEX 2973 and could show that creating a |
| + | standard |
| + | in measurement and methods is really important to have comparable results. With our project we hope |
| + | that we could set a first step into standardization, so that the future cyano community will have |
| + | standardized and comparable results.<br> |
| + | </p> |
| + | </div> |
| + | </section> |
| + | </div> |
| + | </div> |
| + | </div> |
| + | <div class="sub" onclick="popup('rbn436')"> |
| + | <div class="sub-header"> |
| + | <h1> |
| + | C Y A N O <br> |
| + | C O N F E R E N C E   2 0 1 9 |
| + | </h1> |
| + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
| + | </p> |
| + | </div> |
| + | </div> |
| + | <div id="rbn436" class="popup"> |
| + | <div class="popup-container"> |
| + | <div class="popup-header"> |
| + | <h1 class="title">The CYANO 2019 - Standardizing Synthetic Biology</h1> |
| + | <button type="button" onclick="hide('rbn436')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| + | <section class="section"> |
| + | <div> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | From September 11th to September 13th we attended the CYANO Conference 2019 in Tuebingen funded by |
| + | the VAAM (Vereinigung für Allgemeine und Angewandte Mikrobiologie). During the poster sessions we |
| + | took the chance to present our project and how we revolutionize the upcoming work on phototrophic |
| + | organisms. Therefore, we gained great feedback from the participants, which showed huge interest in |
| + | our toolbox specified for cyanobacteria. Our Synthetic Biology approaches encountered the thinking |
| + | of classical cyanobacterial research which lead to interesting discussions from which we gained a |
| + | lot of input. Furthermore, the leading experts of cyanobacteria offered talks where we learned how |
| + | to modify working on <i>Synechococcus elongatus</i>.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | We were especially interested in the discussions about methods. We soon realized that the |
| + | cyanobacterial scene has no standardized protocols for daily laboratory practices and they are also |
| + | aware of that issue. This started with debates about the media composition of BG-11 media but also |
| + | concerned issues like standardized evaluation of light conditions. With our project for |
| + | standardizing growth conditions and providing a part collection we tackle these major issues for |
| + | scientists studying phototrophic organisms.</p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | Caused by our thrive for standardization as synthetic biologist, we decided to make a small study in |
| + | the cyano community about standards in handling of cyanobacteria <b>[link standards in cyano |
| + | community]</b>. Due to the results we know about the importance of our intention and will take |
| + | the first step for creating a standard for working with cyanobacteria in synthetic biology. |
| + | </p> |
| + | <figure style="float: left; margin-right: 25px;"> |
| + | <img style="height: 600px; width: 1500px" |
| + | src="https://static.igem.org/mediawiki/2019/f/fa/T--Marburg--CyanoConference_Grouptphoto.png" |
| + | alt="Placeholder image"> |
| + | <figcaption style="max-width: 1500px"> |
| + | Fig.1 - Group photo with our team members Vinca, Hinrik, Jana and all experts of the Cyano |
| + | Conference. |
| + | </figcaption> |
| + | </figure> |
| + | </div> |
| + | </section> |
| + | </div> |
| + | </div> |
| + | </div> |
| + | <div class="sub" onclick="popup('rbn437')"> |
| + | <div class="sub-header"> |
| + | <h1> |
| + | E X P E R T   O N   C Y A N O S<br> |
| + | J A M E S   G O L D E N |
| + | </h1> |
| + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
| + | </p> |
| + | </div> |
| + | </div> |
| + | <div id="rbn437" class="popup"> |
| + | <div class="popup-container"> |
| + | <div class="popup-header"> |
| + | <h1 class="title">Expert on Cyanos - James Golden</h1> |
| + | <button type="button" onclick="hide('rbn437')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| + | <section class="section"> |
| + | <div> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | While diving deeper and deeper into the ocean of possibilities that cyanobacteria have to offer we |
| + | noticed a few inconsistencies in literature.<br> |
| + | <br> |
| + | BG11 media is commonly used in cyanobacterial research, but the exact composition seemed to be |
| + | different across every second paper we read. Optical densities are more frequently measured at a |
| + | wavelength of 730nm, though 750nm seems to be the better choice. For <i>Synechococcus elongatus</i> |
| + | UTEX 2973 |
| + | the “optimal growth conditions” according to literature are often quite different; some state 38°C |
| + | and |
| + | 500µE at a CO2 level of 3% fits best, others prefer 41°C and 1500µE with 5% CO2 concentration. |
| + | But how are these light intensities measured? With a planar device or a spherical one? We have not |
| + | seen this being explained in literature.<br> |
| + | <br> |
| + | As all of these things have an incredibly huge impact on various different experiments we saw the |
| + | need |
| + | to find a standardized answer to our questions, reaching out to as many experts in this field as we |
| + | could reach - whether it was industry or research. |
| + | One of the leading laboratories working with cyanobacteria is the Golden Lab of the UC San Diego. |
| + | Susan Golden and her husband James W. Golden have both been working with cyanobacteria for quite |
| + | some |
| + | time, now with a stronger focus on their use for industrial purposes. |
| + | We set up a Skype call with them, but sadly Susan Golden was not able to join us on short |
| + | notice.<br> |
| + | <br> |
| + | During our talk with James W. Golden we laid open our concerns about the cyanobacterial community |
| + | and |
| + | he quickly supported our train of thoughts, as he himself noticed a lack of standardization. He |
| + | assured us that this is a hot topic in this field of research, as many do not seem to care enough |
| + | about the reproducibility of their data and encouraged us to continue with our efforts.<br> |
| + | <br> |
| + | More accurately, he talked with us about why he thinks there is still no clear decision on whether |
| + | to |
| + | measure optical densities at 730nm or 750nm: It might be a technical problem, as many photometers |
| + | are |
| + | simply not able to measure wavelengths of 750nm. In contrast, he mentioned that 750nm would be the |
| + | more optimal way, as it proves to minimize absorbance from pigments in cyanobacterial cells, |
| + | presenting more accurate data. This confronted us with a conflicting decision: Would it be better to |
| + | use the more accurate 750nm or 730nm, as the latter would allow more labs all over the world to |
| + | measure in the same way.<br> |
| + | <br> |
| + | This was one of the key factors that led us to measure the whole spectrum of our cultures for our |
| + | growth curves, as this would provide a larger dataset, awarding us not just with 730nm and 750nm |
| + | data, |
| + | but also the possibility to check if the spectrum shows normal behavior, from which one could |
| + | conclude |
| + | how healthy the cultures are.<br> |
| + | <br> |
| + | Another important issue we were able to discuss with Professor Golden is the composition of BG11 |
| + | media. While working in our own lab we already got the notion that not all BG11 media are prepared |
| + | in |
| + | the same way, which is the reason why we kindly asked other researchers - like James Golden - to |
| + | send |
| + | us their recipes. In order to compare the various ways the BG11 media can be prepared, we tried |
| + | those |
| + | recipes and measured growth curves to find the perfect fit.<br> |
| + | <br> |
| + | </p> |
| + | <figure style="text-align: center"> |
| + | <img style="height: 50ex; width: 75ex" |
| + | src="https://static.igem.org/mediawiki/2019/8/85/T--Marburg--JG_dif_media.png" alt="JG dif media"> |
| + | <img style="height: 50ex; width: 75ex" |
| + | src="https://static.igem.org/mediawiki/2019/9/94/T--Marburg--JG_dif_media_log.png" |
| + | alt="JG dif media log"> |
| + | <figcaption style="max-width: 150ex;"> |
| + | Fig.1 - (Left) Growth of S. elongatus UTEX 2973 in different media. (Right) Growth of S. elongatus |
| + | UTEX 2973 in different media (log-scale). |
| + | </figcaption> |
| + | </figure> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | It was clear that the growth of our cultures was comparably fast at the beginning no matter what |
| + | media |
| + | was used, but one of them stood out: BGM - it enabled faster growth at higher ODs, allowing cultures |
| + | to reach double the OD of other cultures after the same time.<br> |
| + | <br> |
| + | We are certain that having the same ideal medium throughout different cyano labs is not just |
| + | elemental |
| + | for optimal growth, but also vital for comparability, as trying to reproduce the growth conditions |
| + | of |
| + | papers can be quite tricky when it is not clear what exact medium was used and how it was |
| + | prepared.<br> |
| + | <br> |
| + | </p> |
| + | <figure style="float: right; margin-left: 25px;"> |
| + | <img style="height: 50ex; width: 75ex" |
| + | src="https://static.igem.org/mediawiki/2019/e/e8/T--Marburg--JG_dif_measurements.png" |
| + | alt="JG dif media"> |
| + | <figcaption style="max-width: 75ex;"> |
| + | Fig.2 - Growth of S. elongatus UTEX 2973 at 1500µE measured with different methods. |
| + | </figcaption> |
| + | </figure> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | This problem, as stated before, applies not only to media, but also for the measurement of light |
| + | intensities. In the beginning we measured the light intensity of our incubators with a planar |
| + | measurement device - the only one available for us. Talking to James Golden we realized that we |
| + | should |
| + | try to get hold of a spherical measurement device, as he assured us that this is the way to generate |
| + | more accurate data, leading to a more reproducible setup - exactly what we were aiming for.<br> |
| + | <br> |
| + | After acquiring such a device, we again implemented the feedback we got and measured growth curves. |
| + | One with cultures at 1500µE measured with a spherical device and one with 1500µE measured with a |
| + | planar device, where the measured intensities were converted to theoretically spherical values with |
| + | a |
| + | conversion chart offered to us by Prof. Dr. Annegret Wilde from the University of Freiburg.<br> |
| + | <br> |
| + | These experiments were a huge step in our project, as they heavily influenced the way we cultured |
| + | our |
| + | cyanobacteria, not only drastically improving their growth, but also clearly demonstrating how |
| + | flawed |
| + | certain measurements can be. |
| + | We would never have been able to reach the fast doubling times we achieve now without this crucial |
| + | input and as this will be the case for others too, we made it our mission to keep on stressing the |
| + | importance of this way of measurement whenever we reach out to the scientific community. |
| + | Again, thank you very much Prof. Dr. James W. Golden for your invaluable contribution! |
| + | </p> |
| + | </div> |
| + | </section> |
| + | </div> |
| + | </div> |
| + | </div> |
| + | <div class="sub" onclick="popup('rbn438')"> |
| + | <div class="sub-header"> |
| + | <h1> |
| + | O P E N T R O N<br> |
| + | +   K E O N I |
| + | </h1> |
| + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | One of the earlier inspiration for our colony picking project. |
| + | </p> |
| + | </div> |
| + | </div> |
| + | <div id="rbn438" class="popup"> |
| + | <div class="popup-container"> |
| + | <div class="popup-header"> |
| + | <h1 class="title">Opentron + Keoni</h1> |
| + | <button type="button" onclick="hide('rbn438')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| + | <section class="section"> |
| + | <div> |
| + | <p style="text-align: center; margin-bottom: 1em;"> |
| + | “A colony picking module for the OT-2 will be a great help” - <b>Keoni Gandall </b></p> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | We started with the colony picking project back in December 2018. Since from the beginning we know |
| + | that we have to involve Opentrons in the conversation, because we are working on a colony picking |
| + | extension module for the OT-2. We contacted Kristin Ellis from Opentrons and this turned out to be |
| + | the |
| + | right approach for us, because Kristin is very familiar with the OT-2 community. She has been a big |
| + | help to us ever since by bridging us with Opentrons’ technical experts or other kinds of resources. |
| + | At |
| + | the time Kristin told us that colony picking is a big topic in the OT-2 community and gave us a few |
| + | contacts, among them: Keoni Gandall.<br> |
| + | <br> |
| + | Keoni Gandall is a bio-hacker who is determined to open source systems in Synthetic Biology. He is |
| + | an |
| + | avid user of the OT-2 because of the philosophy that OT-2 embodies: an affordable, and open-source |
| + | pipetting robot. Colony picking is a big part of a cloning workflow, whose automation involves a lot |
| + | of cost. There is yet to be an affordable solution for colony picker, and Keoni believes that OT-2 |
| + | has |
| + | the potential to fill this gap. When we mentioned our colony picking project to Keoni, it directly |
| + | resonated with him, and this gave us an extra justification for our project: this is what the |
| + | community wants and needs. We listened to the community and let it shape our project. Since then we |
| + | have been keeping in touch with Keoni and exchanging tips and tricks for the OT-2.<br> |
| + | <br> |
| + | </p> |
| + | </div> |
| + | </section> |
| + | </div> |
| + | </div> |
| + | </div> |
| + | <div class="sub" onclick="popup('rbn439')"> |
| + | <div class="sub-header"> |
| + | <h1> |
| + | P R O M E G A<br> |
| + | </h1> |
| + | <hr> |
| + | </div> |
| + | <div class="sub-content"> |
| + | <p> |
| + | Automating plasmid purification protocol with the OT-2. |
| + | </p> |
| + | </div> |
| + | </div> |
| + | <div id="rbn439" class="popup"> |
| + | <div class="popup-container"> |
| + | <div class="popup-header"> |
| + | <h1 class="title">Promega</h1> |
| + | <button type="button" onclick="hide('rbn439')">X</button> |
| + | </div> |
| + | <div class="popup-content" style="text-align: justify;"> |
| + | <section class="section"> |
| + | <div> |
| + | <figure style="float: right; margin-left: 25px;"> |
| + | <img style="height: 400px; width: 600px" |
| + | src="https://static.igem.org/mediawiki/2019/b/b4/T--Marburg--margarethe_schwarz.jpg" |
| + | alt="Placeholder image"> |
| + | <figcaption style="max-width: 600px"> |
| + | Fig.1 - Margarethe Schwarz visiting the iGEM team Marburg 2019 to watch the OT-2 perform a plasmid |
| + | purification using the Promegas Wizard® MagneSil® Plasmid Purification System. |
| + | </figcaption> |
| + | </figure> |
| + | <p style="text-align: justify; margin-bottom: 1em;"> |
| + | When the iGEM year started, we thought about how we could ease the work in the lab using our OT-2. |
| + | We |
| + | decided automating the cloning process would be a great idea and soon got into contact with Promega |
| + | to |
| + | tell them about our vision. Margarete Schwarz, area manager of southwest germany, and Nans Bodet, a |
| + | Field Support Scientist (FSS) from the automation department at Promega, were both convinced that |
| + | the |
| + | automation of the cloning workflow would be a challenge, but with creativity and some work it would |
| + | be |
| + | a major breakthrough and a great tool for everyone with access to an OT-2.<br> |
| + | <br> |
| + | In a skype call both agreed that they would love to see Promegas Wizard® MagneSil® Plasmid |
| + | Purification System integrated into the workflow, being Promegas very first automated workflow in |
| + | Opentrons OT-2 and the first protocol for plasmid purification in a large collection of Opentrons |
| + | protocols. Promega covered our costs in terms of kits we needed for the protocols so we could focus |
| + | on |
| + | optimizing the workflow.<br> |
| + | <br> |
| + | We performed the plasmid purification a few times manually, so we would get familiar with the whole |
| + | workflow and get a feeling where problems in the automated process could arise. We were in regular |
| + | contact with Nans and he gave great advice on how to automate the shaking process in the OT-2 and |
| + | that |
| + | we would need the 8-channel pipette to scale up the number of samples that could be handled with our |
| + | protocol. For the shaker he told us to get in contact with QInstruments, a company which designs and |
| + | builds small shakers that are simultaneously capable of heating and cooling the samples. Thanks to |
| + | recommendations from Nans a member of their support team, Ralf Paetzold, wrote us back and kindly |
| + | helped us to secure a permanent loan for the BioShake D30-T elm back in June. Through a grant our |
| + | team |
| + | won, we were able to purchase the 8-channel pipette arm.<br> |
| + | <br> |
| + | When the shaker arrived, we realized it was a bit bigger than the SPS format for modules in the OT-2 |
| + | and needed stabilizing support. We designed an adapter for the shaker that is robust enough to |
| + | withstand the forces that occur during intense shaking <b>(LINK TO HARDWARE)</b>.<br> |
| + | <br> |
| + | Furthermore, Opentron is currently rolling out a major update from their OT-2 3.9 to 4.0 firmware |
| + | that |
| + | included a lot of paradigm change. This changed the way had to define our labware and we ended up |
| + | defining our shaker module coordinates as a Python dictionary importable via a .json file. After |
| + | some |
| + | calibrations with our OT-2 we were trying to finish the protocol; thankfully Opentron customer |
| + | service |
| + | was patient with us. They told us how to calibrate the OT-2 directly via the terminal because we had |
| + | some difficulties.<br> |
| + | <br> |
| + | In late august Margarete Schwarz paid us a visit, curious about how the plasmid purification with |
| + | Promegas Kit would perform and look like in the OT-2. We were also asked to write a <a |
| + | style="padding: 0" |
| + | href="https://www.promegaconnections.com/it-takes-a-village-automating-plasmid-purification-for-igem/">blog |
| + | post</a> about |
| + | our thoughts and progress on automating plasmid purification for the Promega Connections Blog.<br> |
| + | <br> |
| + | By the end of this iGEM year we were able to develop a <a style="padding: 0" |
| + | href="https://2019.igem.org/Team:Marburg/Miniprep">working protocol</a> for the single-channel |
| + | pipette for up to 6 samples, as well as a protocol for the 8-channel pipette for up to 48 |
| + | samples.<br> |
| + | <br> |
| + | We are very happy about this fruit bearing interaction, we think both sides profited from this |
| + | cooperation in a big way. |
| + | </p> |
| + | </div> |
| + | </section> |
| + | </div> |
| + | </div> |
| + | </div> |
| + | </section> |
| + | </div> |
| + | </div> |
| </div> | | </div> |
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