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ARS Home » Southeast Area » Stoneville, Mississippi » Southern Insect Management Research » Research » Publications at this Location » Publication #132597
Title: HELICOVERPA ZEA (BODDIE) EXHIBITS DIFFERENTIAL TOLERANCE TO CRY1AC DURING LARVAL DEVELOPMENT

Author
item Stankiewicz, Rebecca
item Sumerford, Douglas

Submitted to: Molecular Insect Science International Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 6/18/2002
Publication Date: 8/23/2002
Citation: Stankiewicz, R.L., Sumerford, D.V. 2002. Helicoverpa zea (Boddie) exhibits differential tolerance to Cry1Ac during larval development. ISMIS 2002. Abstracts of the Fourth International Symposium on Molecular Insect Science. 70 pp. Journal of Insect Science, 2:17, Available online: insectscience.org/2.17

Interpretive Summary:

Technical Abstract: Cry1Ac is a Bacillus thuringiensis protein that has specific activity against Lepidoptera. H. zea larvae were tested for their response to high doses of Cry1Ac protein at each instar. The first four instars had high mortality and the survivors had delayed development. Fifth instar individuals showed significantly less mortality, although the pupae were significantly smaller than the control. The results illustrate that physiological changes that occur during development can influence the action of anthropomorphic compounds.