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Smart Breeding to Beat Biotechnology?
divisionbyzero writes "Scientists are developing superorganics made through improved traditional interbreeding in order to circumvent Monsanto's patents and finally deliver on the promise of genetically engineered food."
Can someone list any meaningfull danagers of GM food, preferably with something that resembles proof. I'm not trolling for either side here I'm simply curious.
The main reasonable objection I've heard is that, because you're splicing genes from wherever you please, you can no longer tell by inspection whether or not you'll be allergic to any given food. While the "splicing fish genes into vegetables" is an extreme example, it gets the concept across. IMO, this isn't likely to occur accidentally (you know what genes you're copying, and so would know when you're copying something that codes for an allergen). However, it would still occur, and so presents a concern.
A secondary objection is that it's very difficult to grow samples of an engineered crop without it spreading out of the controlled area or cross-pollinating with other nearby compatible plants. This means that if you do, for instance, engineer a strain of wheat that makes anyone with a peanut allergy keel over and die, there's a significant risk of that strain propagating into mundane wheat fields, with un-fun results. Engineered strains are usually specifically designed to be hardier than normal strains (that's why we're engineering them), so they will be competitive with normal strains in the field.
That having been said, I think that genetically engineered crops are inevitable, and mostly beneficial. When this becomes a tried-and-true technology instead of an experimental one, the fuss should die down.
My fiance is a Plant Breeder who graduated from Cornell and studied for a time under Susan McCouch. There is a lot of misunderstanding of traditional plant breeding, and while this article touches on some of the more non-scientific aspects of the field, it certainly is right about breeding.
/.ers analogy:
// thisfsoidahu8903w //OWI%#H lkjh // HACK AND SLASH - INSERT RED TOMATO GENE HERE // END HACK AND SLASH
To those of you who think there is no difference between G.M.ed foods and bread foods, let me give you a
Traditional plant breeding is a little bit like editing a makefile. The breeders job consists primarilly of decoding and understanding the contents of that makefile in order to eventually modify it to turn on and off certain features.
MAKEFILE for peachtree.c
# Make sure our peaches are large
FRUITSIZE = HUGE
# Make the shelf life long so
ROTTIME = VERYLONG
# Make the item pretty
COLOR = PEACHY
All of these traits already exist in the target species, or at least in a species closely related enough to cross with it. At one time or another, they've all been expressed, just not at the same time. If you have enough experience with the plant, and know the plant isn't dangerous, you know you can incorporate these traits together into single plants without much worry.
Contrast this to G.M.ed food, which can best be described as a hack and slash modification to the actual source code.
#include peachoptions.h
peachcolor(fruit thisfruit) {
#ifdef PEACHY
thisfruit.color=PEACHY;
thisfruit.stem=SHORT;
#endif
#ifdef PASTEY
thisfruit.color=PASTEY;
thisfruit.stem=LONGER;
#endif
thisfruit.color=RED;
thisfruit.nutrition=TOMATOE LIKE;
thisfruit.stem=VERYLONG;
thisfruit.nutrition=LOW;
if (thisfruit.color==PEACHY) thisfruit.nutrition=HIGHER;
if (thisfruit.color==PASTEY) thisfruit.nutrition=HIGH;
return;
)
OK, this is all fake, but the point is, just like sticking code in software at poorly controlled places can have unintended consequences, sticking genes in to a plant's genetic sequence can also have unintended side effects.
As it turns out, nature can do something similar through the use of transposons: genes that randomly remove themselves from one part of a plant's genetic code and insert themselves elsewhere. However, the chance of producing a dramatic change is not as great, since the transposon gene is not being expressed in a completely different species from the one originating it.
Most of the time, the results from GMing are positive. But occasionally the results are negative, and the real issue is that we must implement safeguards specific to GM crops in order to protect our food supply.
Mother nature does not discriminate one corn plant from another, and many GM projects have the express purpose of introducing traits you would NOT want in your average corn field. Suppose he introduces a gene which turns the corn kernel flesh pink, making a great new popcorn for teens. Suppose this gene also turns out to cause the corn to be poisonous.
Because corn pollen is capable of traveling impressive distances, that corn gene, if not sufficiently isolated, could contaminate a large portion of this year's corn crop. It is important to note that the gene would not cause irretrievable contamination, as today's seed corn is produced in carefully isolated conditions away from stray pollen (both GM and non-GM). But this sort of contamination would cause major headaches for one harvest season, as the StarLink episode in South America demonstrated. We might not know about a given instance until after you've already eaten Corn Flakes contaminated with birth control hormones.
This contamination problem is similar to what would happen to Marijuana plants if industrial hemp were to
This is just plain silly -- loose vs. well attached genes? How in the world did such nonsense get modded up? I have a doctorate in microbiology focussing on molecular evolution and it just irritates me how people are willing to believe any sort of pseudo-scientific notion if it agrees with their political agenda. Maybe you read something about it in a Greenpeace pamphlet, but that's not a good place to learn facts about science, any more than a Jehovah's Witness pamphlet.
Perhaps, just maybe, you are recalling a half understood description of transposons, which are genes that can change position in the genome but even so, 1) transposons are found in nature -- Barbara McClintock got her Nobel for finding them in corn decades ago 2) only some GM techniques use transposons. So an attack on transposons, if indeed I'm not reading more into your notion of "loose genes" than is merited, makes no sense.