Effect of non-aflatoxigenic strains of Aspergillus flavus on aflatoxin contamination of pre-harvest peanuts in fields in China  

作　　者：Liying Yan Wanduo Song Yuning Chen Yanping Kang Yong Lei Dongxin Huai Zhihui Wang Xin Wang Boshou Liao 

机构地区：[1]Key Laboratory of Biology and Genetics Improvement of Oil Crops,Ministry of Agriculture and Rural Affairs,Oil Crops Research Institute of Chinese Academy of Agricultural Sciences,Wuhan 430062,China

出　　处：《Oil Crop Science》2021年第2期81-86,共6页中国油料作物学报(英文版）

基　　金：This research was supported by the Central Public-interest Scientific Institution Basal Research Fund(2021-2060302-061-019);the National Natural Science Foundation of China(Grant Nos.32001510 and 31461143022);China Agricultural Research System(CARS-13);the Innovation Program of the Chinese Academy of Agricultural Sciences(2021-2060302-049-031).

摘　　要：Aflatoxin contamination of peanuts is one of the most concerns in peanut production in China.Applying nonaflatoxigenic Aspergillus flavus strains,based on competitive exclusion,has been proved to be a promising strategy to reduce aflatoxin contamination in pre-harvest peanuts.Two non-aflatoxigenic A.flavus strains collected in China,which have been proved effectively reducing aflatoxin in the laboratory,were mixed with high aflatoxin producer to the soil in peanut growing season.The two non-aflatoxigenic strains significantly(P<0.05)reduced aflatoxin contamination in peanut kernels under both normal and drought stresses in two fields.Compared to control,the total aflatoxin(sum of aflatoxin B1 and B2)was reduced 26.7–99.12%in field 1,and 84.96–99.33%in field 2.The aflatoxin was reduced 84.96–99.33%under drought stress in two fields.The present study indicated the non-aflatoxigenic A.flavus strains could be potential biocontrol agents for reducing aflatoxin contamination under field condition.

关 键 词：PEANUT Non-aflatoxigenic Aspergillus flavus Aflatoxin reduction Field trial 

分 类 号：S435.652[农业科学—农业昆虫与害虫防治]