文献类型： 外文期刊
第一作者： Mao, Xuewei
作者： Mao, Xuewei;Cao, Tangbo;Chen, Liting;Li, Min;Zhao, Xingchen;Liu, Hao;Wang, Li;Zhou, Lin;Mao, Xuewei;Wang, Li;Zhou, Lin;Mao, Xuewei;Wang, Li;Zhou, Lin;Mao, Xuewei;Duan, Yun
作者机构：
关键词： Fusarium solani; Prochloraz; Baseline sensitivity; Resistance mechanisms; Resistance management
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.0； 五年影响因子：4.5 ）
ISSN： 0048-3575
年卷期： 2025 年 213 卷
页码：
收录情况： SCI
摘要： Peanut root rot (PRR) is caused by Fusarium solani, which severely affects the yield and quality of peanuts. Prochloraz is a triazole-based demethylation inhibitor (DMIs) fungicide with antifungal activity against Fusarium spp. However, the resistance risk and resistance mechanisms of F. solani to prochloraz remain poorly understood. In the current study, the EC50 values of 98 F. solani isolates to prochloraz ranged from 0.029 to 0.40 mu g/mL, with a mean of 0.14 +/- 0.07 mu g/mL, and the sensitivity exhibited a unimodal distribution. Seven prochloraz-resistant (ProR) mutants were obtained through fungicide adaptation, and the resistance factor (RF) ranged from 5.81 to 83.33. The mutants demonstrated reduced fitness in mycelial dry weight and asexual reproduction. No crossresistance was observed between prochloraz and other fungicides, including tebuconazole, pyraclostrobin, and fluazinam. Overexpression of FsCYP51A, FsCYP51B, FsMFS1, and FsMFS2 genes was detected in the resistant mutants. These results demonstrate that the risk of F. solani developing resistance to prochloraz is relatively low, and the overexpression of FsCYP51 and FsMFS may contribute to prochloraz resistance in F. solani. This study provides essential data for the resistance monitoring and resistance management strategies for prochloraz.
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