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Natural product 2-Phenylethanol inhibits ATP synthesis of P. infestans by blocking the oxidative phosphorylation pathway to prevent potato late blight

文献类型： 外文期刊

作者： Lu, Jie 1 ; Li, Jie 1 ; Li, Lei 4 ; Qi, Linlu 1 ; Wang, Yuxi 1 ; Yang, Shuai 3 ; Xu, Guangyuan 1 ; Dou, Daolong 1 ; Wang, Xiaodan 1 ; Liu, Jia 6 ;

作者机构： 1.China Agr Univ, Coll Plant Protect, Dept Entomol, Plant Pathol Dept, Beijing 100193, Peoples R China

2.China Agr Univ, Coll Plant Protect, Plant Pathol Dept, MOA Key Lab Pest Monitoring & Green Management, Beijing 100193, Peoples R China

3.Heilongjiang Acad Agr Sci, Biotechnol Res Inst, Harbin 150028, Heilongjiang, Peoples R China

4.Northeast Agr Univ, Coll Life & Sci, Harbin 150006, Heilongjiang, Peoples R China

5.Jiaxing Vocat & Tech Coll, Jiaxing 314036, Zhejiang, Peoples R China

6.Chongqing Univ Arts & Sci, Inst Special Plants, Coll Landscape Architecture & Life Sci, Chongqing Key Lab Econ Plant Biotechnol, Chongqing 402160, Peoples R China

关键词： Phytophthora infestans; Postharvest storage; Volatile organic compounds; Biocontrol; Oxidative phosphorylation

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：7.0； 五年影响因子：6.9 ）

ISSN： 0925-5214

年卷期： 2023 年 199 卷

页码：

收录情况： SCI

摘要： Potato tuber rots caused by the late blight pathogens oomycete Phytophthora infestans results in severe post-harvest losses in transit and storage. Natural volatile organic compounds (VOCs) produced by antagonistic mi-croorganisms have good biocontrol effects. However, VOCs for controlling potato late blight largely remains scarcity, the antimicrobial mechanisms were not entirely clear. In this study, an antagonistic yeast Candida quercitrusa strain Cq-1 was reported that had strong anti-oomycete activity on P. infestans. Its natural VOCs are mainly attributable to the inhibitory ability at the inhibition rate of 85.94%. Mycelial growth of P. infestans and lesions on postharvest potato tubers were inhibited after exposure to its VOCs by storage simulation assay. Furthermore, 2-Phenylethanol (C8H10O) (2-PE) was identified as one of the primary components of VOCs in C. quercitrusa through GC-MS. Hyphal growth of P. infestans following 2-PE treatment was malformed and shriveling. Mechanism investigations revealed that 2-PE blocked the oxidative phosphorylation pathway from RNA-seq analysis, the down-regulation of relevant genes was validated by qPCR, eventually causing a 68.08% reduction in ATP contents, thereby leading to ATP depletion and ultimate mortality of P. infestans. Hence, 2-PE suggesting potential application to protect postharvest potato tubers from late blight.

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