Terpene synthases GhTPS6 and GhTPS47 participate in resistance to Verticillium dahliae in upland cotton

文献类型： 外文期刊

第一作者： Liu, Wei

作者： Liu, Wei;Wu, Yuchen;Zhang, Yuzhi;Li, Xiaona;Li, Jianing;Zhu, Wei;Ma, Zongbin;Zhang, Zhiqiang;Wu, Yuchen;Zhang, Yuzhi;Li, Wei;Zhang, Zhiqiang;Li, Wei

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关键词： Terpenes; Gossypium hirsutum; Verticillium wilt; VIGS; Metabolome

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.1； 五年影响因子：6.2 ）

ISSN： 0981-9428

年卷期： 2024 年 213 卷

页码：

收录情况： SCI

摘要： Terpene synthases (TPSs) are enzymes responsible for catalyzing the production of diverse terpenes, the largest class of secondary metabolites in plants. Here, we identified 107 TPS gene loci encompassing 92 full-length TPS genes in upland cotton ( Gossypium hirsutum L.). Phylogenetic analysis showed they were divided into six subfamilies. Segmental duplication and tandem duplication events contributed greatly to the expansion of TPS gene family, particularly the TPS-a and TPS-b subfamilies. Expression profile analysis screened out that GhTPS s may mediate the interaction between cotton and Verticillium dahliae . Three-dimensional structures and subcellular localizations of the two selected GhTPSs, GhTPS6 and GhTPS47, which belong to the TPS-a subfamily, demonstrated similarity in protein structures and nucleus and cytoplasm localization. Virus-induced gene silencing (VIGS) of the two GhTPS s yielded plants characterized by increased wilting and chlorosis, more severe vascular browning, and higher disease index than control plants. Additionally, knockdown of GhTPS6 and GhTPS47 led to the down-regulation of cotton terpene synthesis following V. dahliae infection, indicating that these two genes may positively regulate resistance to V. dahliae through the modulation of disease-resistant terpene biosynthesis. Overall, our study represents a comprehensive analysis of the G . hirsutum TPS gene family, revealing their potential roles in defense responses against Verticillium wilt.

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