Sequential evolution of resistance by western corn rootworm to multiple <i>Bacillus thuringiensis</i> traits in transgenic maize.

ABSTRACT: Transgenic crops that produce insecticidal toxins derived from the bacterium Bacillus thuringiensis (Bt) are grown worldwide to manage insect pests. Western corn rootworm is a serious pest of maize in the United States and is managed with Bt maize. In the United States, the commercial cultivation of a Bt crop requires an accompanying resistance-management strategy to delay the evolution of Bt resistance. One of the primary resistance-management strategies consists of non-Bt refuges along with a Bt crop that produces two Bt toxins (i.e., a pyramid) that kill the same pest species. This approach delays resistance because individuals with resistance to one toxin are killed by the second. However, if a pest species is resistant to one toxin in a pyramid, the effectiveness of a pyramid t

SUBMITTER: Gassmann AJ 

PROVIDER: S-EPMC11929453 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature