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1 April 2012 Cotton Plants Expressing a Hemipteran-Active Bacillus thuringiensis Crystal Protein Impact the Development and Survival of Lygus hesperus (Hemiptera: Miridae) Nymphs
James A. Baum, Uma R. Sukuru, Stephen R. Penn, Steven E. Meyer, Shubha Subbarao, Xiaohong Shi, Stanislaw Flasinski, Gregory R. Heck, Robert S. Brown, Thomas L. Clark
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Abstract

The plant bugs Lygus hesperus Knight (Hemiptera: Miridae) and L. lineolaris (Palisot de Beauvois) have emerged as economic pests of cotton in the United States. These hemipteran species are refractory to the insect control traits found in genetically modified commercial varieties of cotton. In this article, we report the isolation and characterization of a 35 kDa crystal protein from Bacillus thuringiensis, designated TIC807, which causes reduced mass gain and mortality of L. hesperus and L. lineolaris nymphs when presented in an artificial diet feeding assay. Cotton plants expressing the TIC807 protein were observed to impact the survival and development of L. hesperus nymphs in a concentration-dependent manner. These results, demonstrating in planta activity of a Lygus insecticidal protein, represent an important milestone in the development of cotton varieties protected from Lygus feeding damage.

© 2012 Entomological Society of America
James A. Baum, Uma R. Sukuru, Stephen R. Penn, Steven E. Meyer, Shubha Subbarao, Xiaohong Shi, Stanislaw Flasinski, Gregory R. Heck, Robert S. Brown, and Thomas L. Clark "Cotton Plants Expressing a Hemipteran-Active Bacillus thuringiensis Crystal Protein Impact the Development and Survival of Lygus hesperus (Hemiptera: Miridae) Nymphs," Journal of Economic Entomology 105(2), 616-624, (1 April 2012). https://doi.org/10.1603/EC11207
Received: 28 June 2011; Accepted: 29 December 2011; Published: 1 April 2012
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KEYWORDS
Bacillus thuringiensis
Hemiptera
Lygus
tarnished plant bug
transgenic cotton
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