Photo by Whitney Cranshaw, Colorado State University.
Genetically engineered (or GMO) corn that was developed to kill insect pests has been causing resistance in some of those very insects for several years. But the issue has not received as much attention as it should. A new research paper
in the prestigious journal, Proceedings of the National Academy of Sciences (PNAS), may change this by providing additional cause for concern.
Rootworms in some areas are now resistant to two of the three available Bacillus thuringiensis (Bt) toxins that previously controlled them. And because only one or two of these toxins are used per corn variety, a number of fields in the corn belt are now sustaining severe damage.