Tag Archives: entomologists

Multi-Toxin Biotech Crops Not Silver Bullets, UA Scientists Warn

The popular new strategy of planting genetically engineered crops that make two or more toxins to fend off insect pests rests on assumptions that don’t always apply, UA researchers have discovered. Their study helps explain why one major pest is evolving resistance much faster than predicted and offers ideas for more sustainable pest control.

A strategy widely used to prevent pests from quickly adapting to crop-protecting toxins may fail in some cases unless better preventive actions are taken, suggests new research by University of Arizona entomologists published in the Proceedings of the National Academy of Sciences.

Corn and cotton have been genetically modified to produce pest-killing proteins from the bacterium Bacillus thuringiensis, or Bt for short. Compared with typical insecticide sprays, the Bt toxins produced by genetically engineered crops are much safer for people and the environment, explained Yves Carrière, a professor of entomology in the UA College of Agriculture and Life Sciences who led the study. (more…)

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UA Entomologists Partner with China to Thwart Bollworm Resistance to Bt Cotton

Researchers at the UA are studying resistance in pink bollworm in China and working to develop strategies against it.

University of Arizona entomologists are joining forces with scientists on the other side of the globe to protect cotton in China from potentially devastating insect pests.

Xianchun Li, associate professor of entomology in the UA College of Agriculture and Life Sciences, and Bruce Tabashnik, head of the department of entomology, both members of the UA BIO5 Institute, are partnering with Chinese scientists to combat insect resistance to genetically engineered cotton plants. (more…)

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