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Science 3 August 2001:
Vol. 293. no. 5531, p. 778
DOI: 10.1126/science.293.5531.778
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News of the Week

ENTOMOLOGY:
First Light on Genetic Roots of Bt Resistance

Erik Stokstad

Crops that are genetically engineered to make insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) require less chemical pesticides. But insects can adapt to these natural toxins, just as they do to synthetic chemical pesticides, raising worries that extensive use of the modified crops will lead to widespread resistance that could render both the crops and the Bt sprays useless. Now, in work reported on pages 857 and 860, scientists have identified the first resistance genes for Bt, taking a big step toward understanding how Bt resistance arises--a key to predicting the occurrence of such resistance.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Evidence for the Contribution of LTR Retrotransposons to C. elegans Gene Evolution.
E. W. Ganko, V. Bhattacharjee, P. Schliekelman, and J. F. McDonald (2003)
Mol. Biol. Evol. 20, 1925-1931
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