Biocontrol efficacy of atoxigenic Aspergillus flavus strains against aflatoxin contamination in peanut field in Guangdong province, South China
文献类型： 外文期刊
作者： Mamo, Firew Tafesse 1 ; Shang, Bo 1 ; Selvaraj, Jonathan Nimal 4 ; Zheng, Yongquan 5 ; Liu, Yang 1 ;
作者机构： 1.Foshan Univ, Sch Food Sci & Engn, South China Food Safety Res Ctr, Foshan, Guangdong, Peoples R China
2.Chinese Acad Agr Sci, Inst Food Sci & Technol, Key Lab Agroprod Qual & Safety Control Storage &, Minist Agr & Rural Affairs, Beijing, Peoples R China
3.Ethiopian Biotechnol Inst, Addis Ababa, Ethiopia
4.Hubei Univ, Coll Life Sci, Wuhan, Peoples R China
5.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Pests, Beijing, Peoples R China
关键词： peanut; Atoxigenic Aspergillus flavusstrains; toxigenic Aspergillus flavusstrains; aflatoxins; biocontrol
期刊名称：MYCOLOGY-AN INTERNATIONAL JOURNAL ON FUNGAL BIOLOGY （ 影响因子：4.2； ）
ISSN： 2150-1203
年卷期： 2022 年 13 卷 2 期
页码：
收录情况： SCI
摘要： Application of atoxigenic strains of Aspergillus flavusto soils is the most successful aflatoxin biological control approach. The objective of this study was to evaluate the efficacies of native non-aflatoxin producing (atoxigenic) strains as a biocontrol agent in peanut field in China. The competitive atoxigenic A. flavus strains (JS4, SI1and SXN) isolated from different crops, in China were used for field evaluation. The strains applied during the growing season (June - October, 2016) in the field at rate of 25 kg inoculum/hectare. The colonization of these biocontrol agents has been investigated and the population of A. flavus communities in soil were determined. The incidences of toxin producing (toxigenic) A. flavus strains and aflatoxin contamination in peanuts were also determined. Treated plots produced significant reductions in the incidence of toxigenic isolates of A. flavus in soil. However, the total fungal densities were not significantly different (p > 0.05) after treatments. Large percentage of aflatoxin reductions, ranging from 82.8% (SXN) up to 87.2% (JS4) were recorded in treated plots. Generally, the results suggest that the strategy can be used to control aflatoxin contamination and continuous evaluation should be done.
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