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United States Department of Agriculture

Agricultural Research Service

Title: The Potential for Improving Food Safety Through Indirect Reduction of Mycotoxins in Bt Corn

item Dowd, Patrick

Submitted to: Proceedings of Food Biotechnology Conference
Publication Type: Proceedings
Publication Acceptance Date: December 6, 2000
Publication Date: N/A

Technical Abstract: Indirect reductions in fumonisin levels ranged from over 40-fold to 0.2-fold in Bt compared to non-Bt corn evaluated in Illinois in small plots, small fields, and commercial fields from 1995 to 2000. There were several cases where statistically significant reductions occurred. Other reductions of fumonisin levels also appear to be real based on significant correlations between numbers of insect-damaged kernels and fumonisin levels, which co-varied at the same sample locations in the field. Differences in degrees of fumonisin reductions were attributed to the timing of insect damage, species of insects present, Bt construct present, relative individual hybrid resistance to the ear mold and fumonisin production, and weather influences. Bt corn appears to offer a "quality/health protection" effect in regard to fumonisins, which is mediated by the different factors previously mentioned.

Last Modified: 4/18/2015
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