数字农科院2.0

Antifungal activity and potential mechanism of 3-phenylpropionic acid against pear Valsa canker

文献类型： 外文期刊

作者： Yuan, Hongbo;Hou, Hui;Liu, Ruiping;Huang, Tianxiang;Li, Xiaoqian;Chen, Yan;Wang, Li;Tu, Hongtao

作者机构：

关键词： 3-phenylpropionic acid;mechanism;Pear Valsa canker;transcriptome analysis;Valsa pyri;Acide 3-ph & eacute;nylpropionique;analyse transcriptomique;chancre du poirier Valsa;m & eacute;canisme

期刊名称： CANADIAN JOURNAL OF PLANT PATHOLOGY

ISSN： 0706-0661

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Pear Valsa canker disease, caused by Valsa pyri, is among the diseases with highest prevalence, representing a significant threat to pear production. Alternative tools are urgently needed to supplement the chemical pesticide-based approaches in plant disease control. In this study, we explored the efficacy and underlying mechanism of 3-phenylpropionic acid (3PPA) against V. pyri. The results showed that 3PPA had significant inhibition activity on V. pyri. After 3PPA treatment at different concentrations, the average diameters of mycelial colony all significantly reduced compared with control. Treatment with 3PPA at the concentration of 300 mg L-1 completely inhibited V. pyri growth. Moreover, 3PPA treatment destroyed hyphal cell wall and membrane integrity of V. pyri. In addition, 3PPA significantly inhibited V. pyri-induced Valsa canker disease development on pear twigs. After treatment with 200 or 300 mg L-1 of 3PPA, the disease incidence and average lesion length markedly decreased. Transcriptome analysis showed that 3PPA modulated the expression of genes involved in cell wall and membrane biosynthesis and metabolism, as well as amino acid metabolism and secondary metabolism in V. pyri. Taken together, this study demonstrates 3PPA as a potential novel candidate control agent of pear Valsa canker and reveals the underlying inhibition mechanism.

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