Ecotype-specific phenolic acid accumulation and root softness in Salvia miltiorrhiza are driven by environmental and genetic factors
文献类型： 外文期刊
第一作者： Yu, Haomiao
作者： Yu, Haomiao;Jiang, Yuanyuan;Zhong, Mingzhi;Chai, Songyue;Wang, Long;Lin, Li;Deng, Xuexue;Zhang, Yunsong;Pu, Xiang;Zhang, Li;Yu, Haomiao;Liao, Jinqiu;Yang, Ruiwu;Zhong, Mingzhi;Tao, Shan;Liu, Moyang
作者机构：
关键词：
evolution; genetic and environmental factors; phenolic acid metabolism; multi-omics analysis;
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：10.5； 五年影响因子：12.4 ）
ISSN： 1467-7644
年卷期： 2025 年 23 卷 6 期
页码：
收录情况： SCI
摘要： Salvia miltiorrhiza Bunge, a renowned medicinal herb in traditional Chinese medicine, displays distinctive root texture and high phenolic acid content, traits influenced by genetic and environmental factors. However, the underlying regulatory networks remain unclear. Here, we performed multi-omics analyses on ecotypes from four major Chinese regions, focusing on environmental impacts on root structure, phenolic acid accumulation and lignin composition. Lower temperatures and increased UV-B radiation were associated with elevated rosmarinic acid (RA) and salvianolic acid B (SAB) levels, particularly in the Sichuan ecotype. Structural models indicated that the radial arrangement of xylem conduits contributes to greater root hardness. Genomic assembly and comparative analysis of the Sichuan ecotype revealed a unique phenolic acid metabolism gene cluster, including SmWRKY40, a WRKY transcription factor essential for RA and SAB biosynthesis. Overexpression of SmWRKY40 enhanced phenolic acid levels and lignin content, whereas its knockout reduced root hardness. Integrating high-throughput (DNA affinity purification sequencing) and point-to-point (Yeast One-Hybrid, Dual-Luciferase and Electrophoretic Mobility Shift Assay) protein-DNA interaction detection platform further identified SmWRKY40 binding sites across ecotypes, revealing specific regulatory networks. Our findings provide insights into the molecular basis of root texture and bioactive compound accumulation, advancing breeding strategies for quality improvement in S. miltiorrhiza.
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