Deciphering the molecular underpinnings of anthocyanin accumulation in purple-leaf tea plant germplasm resources

文献类型： 外文期刊

第一作者： Wang, Huan

作者： Wang, Huan;Liang, Shicai;Lang, Xuxu;Wang, Yu;He, Shan;Yue, Jiaxuan;Ding, Zhaotang;Qian, Wenjun;Ding, Zhaotang;Yamashita, Hiroto;Zhang, Shuning;Ikka, Takashi;Wu, Lianying

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关键词： Camellia sinensis; Anthocyanins; Differentially expressed genes; Methylation; Genetic variation

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.2； 五年影响因子：4.6 ）

ISSN： 0304-4238

年卷期： 2025 年 345 卷

页码：

收录情况： SCI

摘要： Anthocyanins are key pigments responsible for purple leaf coloration in tea, and their accumulation varies among different tea plant germplasm resources (TPGRs). Here, we investigated anthocyanin biosynthesis in three TPGRs with distinct leaf colors using metabolomics, transcriptomics, and resequencing. The results revealed that 12 anthocyanins were differentially accumulated across the TPGRs. Many differentially expressed genes (DEGs) related to chloroplast function were enriched in CK, with CsFLS (CSS0033075) and CsLAR (CSS0028235) significantly upregulated. In Z4, anthocyanin biosynthesis-related (ABR) genes were upregulated in August compared to October, along with numerous DEGs associated with methylation. In Z7, ABR genes were upregulated in both August and October, with specific upregulation of 15 CsGSTs. Correlation analysis revealed significant associations between CsFLS and four transcription factors in CK, CsWRKY70 (CSS0024910) and CsWD40-like (CSS0023147) in Z4, and a network of CsWD40-like, CsCsMYBs, and CsbHLHs in Z7. Genome resequencing further uncovered numerous SNPs and InDels within ABR genes. This study enhances our understanding of anthocyanin biosynthesis and provides valuable candidate TPGRs for breeding purple-leaf tea cultivars.

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