The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Friday, December 16, 2005
D0100

Toxicity of Aflatoxin B1 to and its metabolism by corn earworm, Helicoverpa zea

Guodong Niu, gniu@life.uiuc.edu1, Rensen Zeng, rszeng@life.uiuc.edu2, Zhimou Wen, zwen@life.uiuc.edu1, Mary Schuler, maryschu@uiuc.edu1, and May R. Berenbaum, maybe@life.uiuc.edu1. (1) University of Illinois at Urbana-Champaign, Entomology, 320 Morrill Hall, 505 S. Goodwin Av, Urbana, IL, (2) University of Illinois at, Urbana-Champaign, Entomology, 320 Morrill Hall, 505 S. Goodwin Ave, Urbana, IL

Millions dollars of crop loss due to aflatoxin contamination as a result of Aspergillus flavus infection is a serious problem in the United States. Co-occurrence of corn earworm (Helicoverpa zea) damage and aflatoxin contamination has been reported in several crops. We investigated the toxicity of aflatoxin B1 on different stages of H. zea larvae. Our results showed that larvae of higher developmental stages were more tolerant to aflatoxin B1. We also examined the involvement of different enzyme systems of H. zea in the metabolism of aflatoxin B1.


Species 1: Lepidoptera Noctuidae Helicoverpa zea (corn earworm)
Keywords: Aflatoxin toxicity

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