Pest resistance to genetically engineered crops Bt crops is evolving faster now than before, researchers show in the most comprehensive study to date. But as expected from evolutionary theory ...

Crops genetically modified with the bacterium Bt (Bacillus thuringiensis) produce proteins that kill pest insects. Steady exposure has prompted concern that pests will develop resistance to these ...

In these 16 cases, pests developed resistance in about five years on average. “A silver lining is that in 17 other cases, pests have not evolved resistance to Bt crops,” Tabashnik said, noting that ...

It’s well established that an evolutionary tug-of-war exists between transgenic crops and the pests they’re meant to repel—as one changes, the other often adapts accordingly. In some cases ...

Genetically modified crops that produce insect-killing proteins from the bacterium Bacillus thuringiensis (Bt) have reduced reliance on insecticide sprays since 1996. These proteins are lethal to ...

“This is really the first field test of a resistance-management strategy for a Bt crop,” says Anthony M. Shelton of Cornell University. Starting in 1995, the Environmental Protection Agency ...

In 2013, a team of entomologists and agriculture scientists reviewed 77 previous studies about international Bt crops. The team found that in 2005, only one of the 13 pest species examined could ...

Crops genetically modified with the bacterium Bt (Bacillus thuringiensis) produce proteins that kill pest insects. Steady exposure has prompted concern that pests will develop resistance to these ...

Pest resistance to genetically engineered crops Bt crops is evolving faster now than before, UA researchers show in the most comprehensive study to date. But as expected from evolutionary theory ...

Steady exposure has prompted concern that pests will develop resistance to these proteins, making Bt plants ineffective. Cornell research shows that the combination of natural enemies, such as ...

Cases of pest resistance to GE crops increased by more than fivefold in the past decade TUCSON, Ariz. — In 2016, farmers worldwide planted more than 240 million acres (98 million hectares) of ...