Well, the glowing needs additional energy, so if you make it even less energy wasting it can't even grow without competition.
>Designing systems to prohibit horizontal gene transfer-
ok. Like chloroplast engineereing you mean?
>Designing systems to require a non-naturally occurring obligate nutrient
I disagree. This would be like Monsanto biotech. Open science - the plant is yours and you can propagate it naturally. No terminator genes, no obligate nutrients...
However a difference here is that these mentioned risk-takers risked their own lives, while the "risk-takers" contemplating GMO release and risking all of our well-being, whether we consent or not
The proactionary principle exists as a response to the precautionary principle, a rule of thumb often used when deciding whether to allow the pursuit of a technology that might have a negative consequence. In practice, the precautionary principle is strongly biased against technological progress, stating that "we should permit no new technology to be developed and no new productive activity to take place unless we can scientifically prove that no harm to health or environment will result."
Alternatively, the proactionary principle emphasizes technological progress and our freedom to innovate and experiment, while also considering lost costs, payoffs and negative effects. The burden of proof against developing a new technology instead belongs to those who propose restrictive measures.
People's freedom to innovate technologically is highly valuable, even critical, to humanity. This implies a range of responsibilities for those considering whether and how to restrict new technologies. Assess risks and opportunities using an objective, open, and comprehensive, yet simple decision process based on science rather than collective emotional reactions. Account for the costs of restrictions and lost opportunities as fully as direct effects. Favor measures that are proportionate to the probability and magnitude of impacts, and that have the highest payoff relative to their costs. Give a high priority to people's freedom to learn, innovate, and advance.
"""
Does anyone know if EPA has *ever* approved an engineered microorganism for environmental release? Can't think of any examples off hand.
Genetically engineered ones though? The only cases I can think of are maybe some live vaccine strains, but those have typically been mutagenized in other ways, and they would fall under a much stricter regulatory framework anyway, since they're modified pathogens.
Sometimes to advance the state of knowledge, you have to take unknown risks.
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· First, many genomes (or parts thereof) have been sequenced from bacteria that are closely associated with plants including Agrobacterium and Rhizobium (Kaneko et al. 2000; Wood et al. 2001; Kaneko et al. 2002). There is no evidence that these organisms contain genes derived from plants.
· Second, in cases where review of sequence data implied that horizontal gene transfer occurred, these events are believed to occur on an evolutionary time scale on the order of millions of years (Koonin et al. 2001; Brown 2003).
· Third, transgene DNA promoters and coding sequences are optimized for plant expression, not prokaryotic bacterial expression. Thus even if horizontal gene transfer occurred, proteins corresponding to the transgenes are not likely to be produced.
· Fourth, the FDA has evaluated horizontal gene transfer from the use of antibiotic resistance marker genes, and concluded that the likelihood of transfer of antibiotic resistance genes from plant genomes to microorganisms in the gastrointestinal tract of humans or animals, or in the environment, is remote (Council for Biotechnology Information, 2001; http://vm.cfsan.fda.gov/~dms/opa-armg.html, accessed 1/26/10).
· Finally, a recent review of issues related to horizontal gene transfer concluded that this type of gene transfer is unlikely to occur and poses negligible risks to human health or the environment (Keese 2008).
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There is one question I have about the Glowing Plant that I have not seen discussed. What might the ecosystem effects of glowing plants be?
Weighing qualifications and signing releases are slippery slopes.
Is it the training of the person or the facilities that they have access to? Is it okay for someone to take home pathogens if they have experience and a nice home lab? Will the kindergarteners parents really bleach the samples?
As for releases, even if they protect you legally, it is still reprehensible to release potentially harmful samples to untrained people.
I know that the are worse things growing in your house/spoiled meat than lab e coli, but the benefits seem minimal here.
The benefit of community lands is that there are at least a few people self checking, and we all know how often there are infractions and role bending in even academic labs.
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Also remember that bacteria do quorum sensing. When you culture bacteria you multiply them many fold. They may switch on virulence, or you may be alergic to the protein coats.
Even if this isnt the case so called safe organisms can be bad in big doses to certain segments of the publics...and you wont necessarily know... those that are immuno supressed due to disease, therapy, cancer and pregnacy.
Important to minimise contact and maximise respect. Contamination events also could compromise your 'safe' bacterias.
Cheers
Brian
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> Specifically what advancement of knowledge should be expected from releasing these plants into the wild?
> Fourth, the FDA has evaluated horizontal gene transfer from the use of antibiotic resistance marker genes, and concluded that the likelihood of transfer of antibiotic resistance genes from plant genomes to microorganisms in the gastrointestinal tract of humans or animals, or in the environment, is remote (Council for Biotechnology Information, 2001; http://vm.cfsan.fda.gov/~dms/opa-armg.html, accessed 1/26/10).> Finally, a recent review of issues related to horizontal gene transfer concluded that this type of gene transfer is unlikely to occur and poses negligible risks to human health or the environment (Keese 2008).
In the new designs I submitted, I used this: http://journals2005.pasteur.ac.ir/NB/23(9)/1177%20-%201180.pdf
This native plant gene confers kanamycin resistance, but does not work in bacteria (also not in chloroplast expression).
In addition, it is a bit bigger than the bacterial resistance gene, so full integration is a bit more unlikely.
> For Arabidopsis there is a BIO1 mutant which requires the addition of an amino acid to grow the plant and we have started testing this mutant. Using this would greatly simplify the ecological/environmental questions, but when we've discussed with backers we get a strong negative reaction.
If you're using this, you could also get a firefly luciferase plant, which only glows when adding firefly luciferin.What about a plant that is *killed* by lactose?The riobosome inactivating protein (RIP) or sometihing thelike is activated by lactose? The you could easily kill the GMO with milk. But you don't have to feed it once a day with expensive amino acids.
> There is one question I have about the Glowing Plant that I have not seen discussed. What might the ecosystem effects of glowing plants be? Obviously there is already much artificial light at night,
Nobody cares for the insects that fly to the streetlights and die there. The plants will be a lot dimmer...Btw, the plant will attract bugs that eat the leaves. So a potential pollination advantage is balanced out perhaps.
> There are at least 70 different bioluminescent fungi, plus of course fireflies and a couple other bioluminescent insects, all of which will likely be brighter than the glowing plant.
Exactly... What's their effect on the ecosystem? I think it has adapted.
> Given the abundance of man-made and natural light sources, I would expect a dimly glowing Arabidopsis plant to have an insignificant impact on the ecosystem - and even less on light pollution.
If people want to see their plants glowing, they will switch off their house lights. Thus it may get even dimmer?
Wasn't there an effort to create a list of BSL-0 organisms some time back, effectively a list of bugs you can literally eat a petri dish of safely?
Some strains of lab E.coli are BSL0 but not all. But virtually every strain of S.cerevisciae, L.bulgaricus, S.thermophilis etc would be. So either verify your E.coli or pick a bsl0 species.
BACTERIA: Acetobacter aceti (vinegar), Bacillus cereus (cocoa, tofu), Bac. licheniformis (cocoa), Bac. megaterium (cocoa), Bac. pumilus (cocoa), Bac. subtilis (cocoa, rice natto), Erwinia dissolvens (coffee), Lactobacillus acidophilus (acidophilus milk; yogurt), Lact. bulgaricus (yogurt), Lact. casei (many cheeses), Lact. delbr�ckii (pickles, soy sauce), Lact. helveticus (many cheeses), Lact. lactis (most cheeses), Leuconostoc (many cheeses), Leucon. mesenteroides (pickles; sauerkraut), Pediococcus (sauerkraut, ensilages, pickles), Propionibacterium acidipropionici (Emmenthaler cheese), Prop. freundenreichii (Swiss cheese), Prop. jensenii (buttermilk), Prop. shermanii (Emmental and Swiss cheeses), Prop. technicum (Edam cheese), Prop. thoenii (Emmenthaler cheese), Streptococcus cremoris (many cheeses), Strep. diacetilactis (sour cream, and butter products), Strep. faecalis (pickles), Strep. lactis (many cheeses, sour milk), Strep. thermophilus (yogurt and many cheeses).
FUNGI: Penicillium camemberti (cheese), Pen. roqueforti (cheese), Rhodotorula rubrum (Prisoner-of-War bread [WW2] (degrades cellulose)), and Saccharomyces cerevisiae (baking, alcoholic fermentation), Sacc. uvarum (cider)
indentThese higher (eukaryotic) micro-organisms are common environmental constituents. These micro-organisms are appropriate for experimenters of all ages.
GREEN ALGAE: In essence all photosynthetic forms EXCEPT Prototheca [rare skin ulcers]). Permitted types include: Ankistrodesmus, Bangia, Batrachospermum, Bulbochaete, Callithamnion, Careria, Caulerpa, Chlamydomonas, Chlorella, Cladophora, Closterium, Coccolithophora, Corallina, Cosmarium, Derbesia, Desmids, Dunaliella, Dictyota, Ectocarpus, Egregia, Enteromorpha, Eremosphaera, Eudorina, Fritschiella, Fucus, Gigartina, Gonium, Gracilaria, Hydrodictyon, Iridea, Laminaria, Macrocystis, Mesotaenium, Micrasterias, Microspora, Mougeotia, Nereocystis, Netrium, Nitella, Ochromonas, Oedogonium, Pandorina, Pediastrum, Polysiphonia, Porphyra, Porphyridium, Protococcus, Scenedesmus, Selanastrum, Spirogyra, Staurastrum, Stigeoclonium, Synura, Tribonema, Ulothrix, Ulva, Vaucheria, Volvox, Zygnema
PROTOZOANS: Achnanthes, Actinosphaerium, Amoeba proteus, Amoeba chaos (Pelemyxa), Amphidinium, Arcella, Astasia, Difflugia, Blepharisma, Bursaria truncatella, Chilomonas, Colpidium, Crithidia fasciulata, Cyclotella, Didinium, Euglena , Euplotes, Gregarines, Herpetomonas muscarum, Leishmania tarentalae, Leptomonas pessoai, Navicula, Paramecium , Peranema, Peridinium, Phacus, Prorocentrum, Pyrsonympha, Spirostomum, Stentor, Synedra, Tetrahymena, Thalassiosira, Trachelomonas, Tritrichomonas augusta, Trypanosoma lewisi, Trypanosoma ranarum, Trichonympha, and Vorticella.
LICHENS: All forms are safe.
FUNGI: Basidiomycetes, Dactylaris (snares nematodes), Deuteromycetes, Taxomyces andreanae (taxol producer), Zygomycetes (Mucor)
SLIME MOLDS: All types, including Dictyostelium and Physarum, are safe.
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Whoa, B.cereus is on that list.. some strains may be safe, but the species certainly has a bad reputation..
> often said of A.thaliana that it's "totally safe" vs cross pollination as it
> self pollinates, but if it can survive it can evolve. And cross pollination
> is highly adaptive.
One quick clarification about Arabidopsis since I hear this often.
Arabidopsis *can* cross pollinate but it usually doesn't in lab
[I'm a little surprised there hasn't been more of a response to this e-mail . . .]I think disposal is a very important issue, in that the *perceived* hazard of glowing petri dishes (even if the real hazard were practically nil) could cause a great deal of distress among the general public, potentially leading to unnecessary restrictions on DIYbio work. Imagine if you're a maintenance worker emptying a garbage can in the park (or any other place where you wouldn't expect to find strange looking biological samples) and you discover you've just touched these weird glowing germs. You are probably not going to dismiss it as easily as that moldy burger you picked up earlier, you're probably going to wonder and worry. Maybe a lot. Maybe enough to get your supervisor involved (who might get the city council involved, and the mayor, and your congressional representative... and so on).And that is why, early on at least, I think it's important to have procedures in place to review the appropriateness of releasing modified organisms from the controlled environment of the lab. I fully expect things to become less restrictive as time goes on, after self-regulation has proved effective and the general public has more confidence in the DIYbio community.I apologize if I haven't been clear about this before -- I am not opposed to the release of GMOs per se (my graduate work focused on engineering biocontrol agents for crop protection, and much of my subsequent professional work has included similar releases). What I am concerned about is the fact that much of the DIYbio movement (especially community labs like bioC) have a focus on putting recombinant DNA technology into the hands of individuals who do not have an extensive background in biology, and who therefore may not yet be well equipped to determine the risks associated with the release of their engineered organism. In these early days of DIYbio, therefore, it seems like it would be prudent to have a process in place for reviewing proposed releases of GMOs before they actually happen, so that the experimenters have ample opportunity to fine tune their work beforehand.There are many different possible structures that could be put into place, ranging from just posting on an open electronic forum, to having a centralized standing committee that reviews confidential submissions. The main thing, for me at least, is to have some sort of process in place to demonstrate that the DIYbio community gives due consideration to the risks of the work that is undertaken.Lou[P.S. I will be out of town and won't be able to attend the discussion next week]
More importantly:With regard to comments regarding smaller-scale products development, EPA finds that,because smaller scale projects of limited use would most likely be exempt or involve a relativelylimited set of use and exposure scenarios, burdens due to regulatory review would be expected tobe minimal; thus, the impacts of greatest concern to smaller institutions or organizations could befrequently mitigated. In considering comments regarding CBI substantiation, EPA has decided notto require up-front CBI substantiation in connection with TERA submissions.