Thursday, July 21, 2011

Does this sound like such a good idea?

Transgenic grass skirts regulators : Nature News

GM plants have been in the news lately, what with Greenpeace (literally) cutting down CSIRO work on GM wheat.

While I certainly don't support this Greenpeace action, I've always had reservations about GM technology, for many of the reasons you would no doubt find on a Greenpeace website. (Is it necessary in the first place, will genes inadvertently spread into the wild, it's not a precise science at all, is it putting too much control over farming into profit driven corporations, etc. Yes, I sound a regular Lefty, but I can see the reason people worry about it, and there are real life examples of how the technology has not worked out well.)

But GM proponents have often argued that the work is really important for helping the world feed itself in future. I'm yet to be convinced of that, but in any event one of the big GM controversies has been about GM cotton in India; hardly a crop with a vital importance for humanity's well being. (Well, a world only of polyester clothes would be a disaster of a kind, I suppose.)

Today I see from the link above that GM to do with herbicide resistence is also being done for lawn grass. You see, it'll just let you spray the weeds in your lawn instead of having to bend over and pull them up.

Is this something that is really in humanity's interest to develop? Do we really need to run the risk of transferring resistance to herbicides to other grasses?

What's more, there seems to be less regulatory control of this due to the way it's being made:

The grass can evade control because the regulations for GM plants derive from the Federal Plant Pest Act, a decades-old law intended to safeguard against plant pathogens from overseas. Previous types of GM plants are covered because they they were made using plant pathogens. The bacterium Agrobacterium tumefaciens — which can cause tumours on plants — shuttled foreign genes into plant genomes. Developers then used genetic control elements derived from pathogenic plant viruses such as the cauliflower mosaic virus to switch on the genes.

By revealing similar elements in plants' DNA, genome sequencing has liberated developers from having to borrow the viral sequences. And Agrobacterium is not essential either; foreign genes can be fired into plant cells on metal particles shot from a 'gene gun'. Scotts took advantage of both techniques to construct the herbicide-resistant Kentucky bluegrass that put the USDA's regulatory powers to the test.

"The Plant Pest Act was completely inappropriate for regulating biotech crops, but the USDA jury-rigged it," says Bill Freese, science-policy analyst at the Center for Food Safety in Washington DC. "Now we can foresee this loophole getting wider and wider as companies turn more to plants and away from bacteria and other plant-pest organisms." The USDA has not made public any plans to close the loophole and has also indicated that it will not broaden its definition of noxious weeds, a class of plants that falls under its regulatory purview, to facilitate the regulation of GM crops.

Let me just say: this does nothing to reduce my cynicism towards GM work on plants.

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