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Revealing the Molecular Regulatory Mechanism of Flavonoid Accumulation in Tender Leaves of Tea Plants by Transcriptomic and Metabolomic Analyses

文献类型： 外文期刊

作者： Shan, Ruiyang 1 ; Zhang, Yongheng 2 ; You, Xiaomei 1 ; Kong, Xiangrui 1 ; Zhang, Yazhen 1 ; Li, Xinlei 1 ; Wang, Lu 2 ; Wang, Xinchao 2 ; Chen, Changsong 1 ;

作者机构： 1.Fujian Acad Agr Sci, Tea Res Inst, Fujian Branch Natl Ctr Tea Improvement, Fuzhou 350013, Peoples R China

2.Chinese Acad Agr Sci, Minist Agr & Rural Affairs, Natl Ctr Tea Plant Improvement, Tea Res Inst,Key Lab Biol Genet & Breeding Special, Hangzhou 310008, Peoples R China

关键词： Camellia sinensis; transcriptomics; flavonoids; regulatory network

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 4 期

页码：

收录情况： SCI

摘要： Flavonoids are secondary metabolites that are beneficial to life activities and are mainly concentrated in buds and leaves in the form of glycosides. Flavonoid glycosides have important effects on the properties and quality of tea plants. Research has shown that the abundance of flavonoid glycosides varies greatly among different cultivars, but research on the regulatory mechanisms that cause their differential accumulation among tea plant cultivars with different leaf colors is lacking. In this study, an integrated analysis of metabolomics and transcriptomics was conducted to determine the regulatory networks regulating astringency and color-related flavonoids in tea plant cultivars with diverse leaf colors. A total of five anthocyanidins, four catechins, and nine flavonol glycosides were found to partially contribute to the differences in taste and leaf color among tea plant cultivars with diverse leaf colors. Furthermore, 15 MYB genes and 5 Dof genes were identified as potential regulators controlling the expression of eight key structural genes, resulting in differences in the accumulation of specific compounds, including epicatechin (EC), catechin (C), cyanidin, cyanidin 3-O-glucoside, pelargonidin 3-O-glucoside, and quercetin 3-O-glucoside, in tea plant cultivars with diverse leaf colors. These findings provide insights into the development and utilization of resources from tea plants with diverse leaf colors.

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