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Plant Pathology Journal
Year: 2006  |  Volume: 5  |  Issue: 1  |  Page No.: 115 - 124

Resistance Mechanisms to Aspergillus flavus Infection and Aflatoxin Contamination in Peanut (Arachis hypogaea)

X.Q. Liang, M. Luo and B.Z. Guo    

Abstract: Preharvest aflatoxin contamination in peanut is a serious and world-wide problem concerning food safety and human health. Aflatoxin contamination is known to be influenced by numerous factors. Drought and high temperatures are conducive to Aspergillus flavus infection and aflatoxin contamination. Plant-host resistance is a highly desirable tactic that can be used to manage this problem. Screening, identification and field evaluation of germplasm for resistant traits are important techniques. This review summarizes research progress in the area of host resistance mechanisms to aflatoxin contamination in peanut. Resistance mechanism in peanut to aflatoxin contamination has been studied for nearly 30 years. Some resistance mechanisms and resistant factors have been reported to contribute to the resistance to aflatoxin-producing fungi, but no effective efforts have been made to breed for these traits because the mechanisms to resistance traits might not be still fully understood. Future researches are expected to use advanced biotechnology to understand the comprehensive mechanisms governing the resistance pathways in order to use the information in breeding programs for crop improvement and control of preharvest aflatoxin contamination. The risk of aflatoxin contamination could be prevented before the contaminated grains get into the food chain.

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