Integrated Proteomics and Transcriptomics Analyses Reveals the Possible Antifungal Mechanism of an Indoloquinoline Alkaloid Neocryptolepine against Rhizoctonia solani

文献类型： 外文期刊

第一作者： Shang, Xiao-Fei

作者： Shang, Xiao-Fei;Zhang, Zhi-Jun;Yang, Cheng-Jie;Du, Sha-Sha;Wu, Tian-Lin;He, Ying-Hui;Zhu, Jia-Kai;Liu, Ying-Qian;Yan, Yin-Fang;Shang, Xiao-Fei;Dai, Li-Xia;Miao, Xiao-Lou;Zhang, Ji-Yu

作者机构：

关键词： neocryptolepine; antifungal activity; Rhizoctonia solani; complex III; biofungicide

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2021 年 69 卷 23 期

页码：

收录情况： SCI

摘要： Rhizoctonia solani causes serious plant diseases. Neocryptolepine presented the significant antifungal activity against R. solani, however the mode of action is unclear. In this paper, we investigated the potential mode of action of neocryptolepine against R. solani integrated the proteomics and transcriptomics. Results showed that after treatment with neocryptolepine, 1012 differentially expressed proteins and 10 920 differentially expressed genes of R. solani were found, most of them were enriched in mitochondrial respiratory chain. It affected oxidative phosphorylation led to the enrichment of ROS and the decrease of MMP, and inhibited complex III activity with the inhibition rate of 63.51% at 10 mu g/mL. The mitochondrial structural and function were damaged. Cytochrome b-c1 complex subunit Rieske (UQCRFS1) with the high binding score to neocryptolepine was found as a potential target. In addition, it inhibited the sclerotia formation and presented antifungal efficacy by decreasing the diameter of a wound in potato in a concentration-dependent manner. Above results indicated that neocryptolepine inhibited the complex III activity by binding UQCRFS1 and blocked the ion transfer to cause the death of R. solani mycelia. This study laid the foundation for the future development of neocryptolepine as an alternative biofungicide.

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