IHS Chemical Week

Corn Rootworm Found to be Resistant to Bacillus thuringiensis Gene

9:22 AM MDT | September 12, 2011 | Rebecca Coons

Western corn rootworm from four Iowa fields were found to have developed a resistance to Monsanto’s widely used Bacillus thuringiensis (Bt) gene, according to a recent study published by the Public Library of Science (San Francisco). The research, led by Iowa State University (Ames, IA) department of entomology professor AJ Gassmann, could cause farmers to consider switching to other gene technologies produced by Monsanto competitors DuPont and Dow AgroSciences. Resistance Movement: Refuge requirements may be ineffective against Western corn rootworm. The...


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