1237 Volunteer transgenic corn creates challenges for management of the western corn rootworm, Diabrotica virgifera virgifera LeConte

Wednesday, November 19, 2008: 3:20 PM
Room A9, First Floor (Reno-Sparks Convention Center)
Christian Krupke , Department of Environmental Biology, University of Guelph, Guelph, ON, Canada
Paul T. Marquardt , Purdue University, West Lafayette, IN
William G. Johnson , Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN
Genetically-modified corn and soybean dominate the North American agricultural landscape and are becoming increasingly important as biofuels. However, as more traits are expressed by single plants, herbicide-tolerant volunteer corn is becoming a widespread problem as a weed in corn-soybean rotational systems. We show that these volunteer corn plants not only have herbicide-tolerance genes but also express the insecticidal “Bt” trait. We also report high levels of damage to these insecticidal plants from larvae of the target pest, the western corn rootworm (Diabrotica virgifera virgifera) LeConte. The implications of volunteer herbicide-tolerant Bt corn in maintaining the durability of Bt traits in this system is discussed.

doi: 10.1603/ICE.2016.36811