25
2008
Refuges slow resistance to Bt in cotton
posted in Agriculture, Evolution, Genetics, Science & Society 5 Comments(Mind nod to the Thumb and ResearchBlogging)
A post at Further Thoughts discusses a paper in Nature Biotechnology that reviews the research on the evolution of resistance to a Bt toxin that has been engineered into Cotton.
Cotton, as you may or may not know, requires a HUGE amount of pesticides to grow a good crop. The introduction of Bt cotton in China in 2001, engineered to produce a bacterial gene toxic to certain insects (but not mammals), eliminated a quantity of pesticides roughly equal to all the pesticides that California uses in a year.
The insects were not particularly pleased. Evolution charges on, however, and it would seem that resistance is only a matter of time, and eventually we’d be back where we started. Read More…


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