数字农科院2.0

Antifungal Activities of Anilinopyrimidine Fungicides Cyprodinil and Pyrimethanil against Bipolaris maydis

文献类型： 外文期刊

作者： Ding, Chaoyang;Li, Xinyi;Wang, Qiuxue;Sun, Jiazhi;Sun, Yang;Chen, Xing;Liu, Wende;Chen, Yu

作者机构：

关键词： Bipolaris maydis;cyprodinil;pyrimethanil;inhibitory activity;control efficacy

期刊名称： JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

ISSN： 0021-8561

年卷期： 2026 年

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Anilinopyrimidine (AP) fungicides cyprodinil and pyrimethanil have been introduced for controlling various diseases caused by ascomycetes for almost 30 years, but little is known about their activity againstBipolaris maydis, the causative agent of southern corn leaf blight (SCLB). In this study, the baseline sensitivity ofB. maydis to cyprodinil and pyrimethanil was established, and the mean EC50 values were 0.330 mu g/mL and 0.599 mu g/mL, respectively. Cyprodinil or pyrimethanil treatment could cause an abnormal mycelial morphology. Further analysis revealed that cyprodinil or pyrimethanil treatment impaired the integrity of the cell membrane/wall, inhibited the activities of cellulase and pectinase, and led to mitochondrial fragmentation inB. maydis. Additionally, the expression levels of related genes, CGS, CBL, Bccel5A, and Bcpme2, were significantly reduced. Greenhouse and field trials showed that both cyprodinil and pyrimethanil exhibited good control efficacy against SCLB. In conclusion, this study indicated that cyprodinil and pyrimethanil could be potential fungicides for SCLB management.

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