Toxicity of Purified Proteins and the HD-I Strain from Bacillus thuringiensis Against Lesser Cornstalk Borer (Lepidoptera: Pyralidae)

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Abstract:

Toxicity of ClyIA(a), CrylA(b), CrylA(c), CrylC, and ClyIIA proteins, and the HD-1 strain of Bacillus thuringiensis was determined against neonate lesser cornstalk borer, Elasmopalpus lignosellus (Zeller), in diet incorporation bioassays. CrylIA was the most toxic of the individual proteins with an LC50 (micrograms protein per gram diet) of 1.94. The LC50 (micrograms protein per gram diet) for the HD-1 strain that contains all of the above mentioned proteins except CrylC was 5.46. The toxicity of CryIIA and the HD-l strain suggests that these compounds could be used to efficaciously control E. lignosellus in peanut fields either in typical ground applications, or in the case of CryIlA, be over expressed in other organisms such as plants or plant-colonizing bacteria.

Document Type: Research Article

Publication date: June 1, 1995

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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