Ethylene-Inducible AP2/ERF Transcription Factor Involved in the Capsaicinoid Biosynthesis in Capsicum
文献类型： 外文期刊
作者： Wen, Jinfen 1 ; Lv, Junheng 2 ; Zhao, Kai 2 ; Zhang, Xiang 2 ; Li, Zuosen 2 ; Zhang, Hong 2 ; Huo, Jinlong 2 ; Wan, Hongjian 3 ; Wang, Ziran 2 ; Zhu, Haishan 2 ; Deng, Minghua 2 ;
作者机构： 1.Kunming Univ Sci & Technol, Fac Architecture & City Planning, Kunming, Peoples R China
2.Yunnan Agr Univ, Coll Hort & Landscape, Kunming, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Vegetables, Hangzhou, Peoples R China
关键词： CcERF2; pepper; capsaicinoids; ethylene; VIGS
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Ethylene is very important in the process of plant development and regulates the biosynthesis of many secondary metabolites. In these regulatory mechanisms, transcription factors (TFs) that mediate ethylene signals play a very important role. Capsaicinoids (CAPs) are only synthesized and accumulated in Capsicum species, causing their fruit to have a special pungent taste, which can protect against attack from herbivores and pathogens. In this study, we identified the TF CcERF2, which is induced by ethylene, and demonstrated its regulatory effect on CAPs biosynthesis. Transcriptome sequencing analysis revealed that the expression patterns of CcERF2 and multiple genes associated with CAPs biosynthesis were basically the same. The spatiotemporal expression results showed CcERF2 was preferentially expressed in the placenta of the spicy fruit. Ethylene can induce the expression of CcERF2 and CAPs biosynthesis genes (CBGs). CcERF2 gene silencing and 1-methylcyclopropene (1-MCP) and pyrazinamide (PZA) treatments caused a decrease in expression of CBGs and a sharp decrease in content of CAPs. The results indicated that CcERF2 was indeed involved in the regulation of structural genes of the CAPs biosynthetic pathway.
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