Insects laughing at Bt toxin? Try this
By Susan Milius
To combat insect resistance to the widely used pesticide Bt, an international research team has announced a new way to restore the pesticide’s punch.
The insect-killing Bt toxins take their name from Bacillus thuringiensis, the bacterium that makes them. Genetic engineers have borrowed the bacterium’s toxin-making genes and inserted them into cotton, corn, and other crops so that the plants can make their own pesticides.