Mechanism Insights into the Enantioselective Bioactivity and Fumonisin Biosynthesis of Mefentrifluconazole to Fusarium verticillioides
文献类型： 外文期刊
作者： Tong, Zhou 1 ; Meng, DanDan 1 ; Zhang, WenYu 1 ; Jin, Lei 1 ; Yi, XiaoTong 1 ; Dong, Xu 1 ; Sun, MingNa 1 ; Chu, Yue 1 ; Duan, JinSheng 1 ;
作者机构： 1.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230031, Peoples R China
2.Anhui Prov Key Lab Pesticide Resistance Management, Hefei 230031, Peoples R China
3.Minist Agr, Key Lab Agroprod Safety Risk Evaluat Hefei, Hefei 230031, Peoples R China
关键词： maize; F.verticillioides; mefentrifluconazole; enantioselectivebioactivity; fumonisins; mechanism
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2024 年 72 卷 16 期
页码：
收录情况： SCI
摘要： The occurrence of maize ear rot caused by Fusarium verticillioides (F. verticillioides) poses a threat to the yield and quality of maize. Mefentrifluconazole enantiomers appear to have strong stereoselective activity against F. verticillioides and cause differences in fumonisin production. We evaluated the stereoselective activity of mefentrifluconazole enantiomers by determining inhibition of the strain, hyphae, and conidia. Strain inhibition by R-(-)-mefentrifluconazole was 241 times higher than S-(+)-mefentrifluconazole and 376 times higher in conidia inhibition. For the mechanism of the enantioselective bioactivity, R-mefentrifluconazole had stronger binding to proteins than S-(+)-mefentrifluconazole. Under several concentration conditions, the fumonisin concentration was 1.3-24.9-fold higher in the R-(-)-mefentrifluconazole treatment than in the S-(+)-mefentrifluconazole treatment. The R-enantiomer stimulated fumonisin despite a higher bioactivity. As the incubation time increased, the stimulation of the enantiomers on fumonisin production decreased. R-(-)-Mefentrifluconazole stimulated higher fumonisin production in F. verticillioides at 25 degrees C compared to 30 degrees C. This study established a foundation for the development of high-efficiency and low-risk pesticides.
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