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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (4): 562-.doi: 10.19802/j.issn.1007-9084.2020236

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Progress in research on mechanism of resistance to Aspergillus flavus L. infection and aflatoxin production in peanut

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  1. 1. Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences/Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture and Rural Affairs Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China;  2. Agricultural College, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2021-08-28 Published:2021-08-27

Abstract: Aflatoxin contamination caused by infection of Aspergillus flavus L. is an important factor which poses a serious threat to production and food safety in peanut. Contamination resistance of Aspergillus flavus can be divided into two categories: infection of Aspergillus flavus and aflatoxin contamination. Resistance mechanisms are usually classified into morphological, physiological, and molecular resistance mechanism. The main factors that determine the resistance of peanut seed coat to infection are the thickness of wax layer, the arrangement density of palisade cells and the existence of seed coat cracks and so on. The contents of tannic acid, trypsin inhibitor and resveratrol were related to the resistance of peanut seeds to Aspergillus flavus infection and aflatoxin production. The pathogenesis-related genes, transcription factor genes, lipoxygenase genes, and other resistance genes are involved in the process of peanut resistance to Aspergillus flavus. In the future, it is possible to explore the mechanism of resistance to Aspergillus flavus infection and aflatoxin production of peanut seeds based on genome-wide association studies and various omics techniques.

Key words: Aspergillus flavus L., aflatoxin, peanut, resistance mechanism

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