CsPHRs-CsJAZ3 incorporates phosphate signaling and jasmonate pathway to regulate catechin biosynthesis in Camellia sinensis
文献类型： 外文期刊
作者： Li, Linying 1 ; Zhang, Xueying 1 ; Li, Da 2 ; Su, Hui 3 ; He, Yuqing 1 ; Xu, Zelong 1 ; Zhao, Yao 1 ; Hong, Yiyi 1 ; Li, Qingsheng 2 ; Xu, Ping 3 ; Hong, Gaojie 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Managing Biot & Chem Threats Qual &, Key Lab Biotechnol Plant Protect MOA China & Zheji, 198 Shiqiao Rd, Hangzhou, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Sericulture & Tea, 198 Shiqiao Rd, Hangzhou 310021, Peoples R China
3.Zhejiang Univ, Dept Tea Sci, 886 Yuhangtang Rd, Hangzhou 310058, Peoples R China
4.Henan Agr Univ, Coll Hort, Dept Tea Sci, 15 Longzihu Univ Area, Zhengzhou 450046, Peoples R China
期刊名称：HORTICULTURE RESEARCH （ 影响因子：7.6； 五年影响因子：8.2 ）
ISSN： 2662-6810
年卷期： 2024 年 11 卷 8 期
页码：
收录情况： SCI
摘要： Catechins constitute abundant metabolites in tea and have potential health benefits and high economic value. Intensive study has shown that the biosynthesis of tea catechins is regulated by environmental factors and hormonal signals. However, little is known about the coordination of phosphate (Pi) signaling and the jasmonic acid (JA) pathway on biosynthesis of tea catechins. We found that Pi deficiency caused changes in the content of catechins and modulated the expression levels of genes involved in catechin biosynthesis. Herein, we identified two transcription factors of phosphate signaling in tea, named CsPHR1 and CsPHR2, respectively. Both regulated catechin biosynthesis by activating the transcription of CsANR1 and CsMYB5c. We further demonstrated CsSPX1, a Pi pathway repressor, suppressing the activation by CsPHR1/2 of CsANR1 and CsMYB5c. JA, one of the endogenous plant hormones, has been reported to be involved in the regulation of secondary metabolism. Our work demonstrated that the JA signaling repressor CsJAZ3 negatively regulated catechin biosynthesis via physical interaction with CsPHR1 and CsPHR2. Thus, the CsPHRs-CsJAZ3 module bridges the nutrition and hormone signals, contributing to targeted cultivation of high-quality tea cultivars with high fertilizer efficiency.
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