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Multi-omics study reveals a light-dependent regulatory network of flavonoid biosynthesis in lettuce (Lactuca sativa L.)

文献类型： 外文期刊

作者： Xiang, Yuting 1 ; Zheng, Shuxin 1 ; Wang, Hsihua 1 ; Chen, Bang 1 ; Fu, Rao 1 ; Huang, Tao 2 ; Zhang, Li 2 ; Song, Bo 2 ; Li, Yuejian 2 ; Yang, Qichang 2 ; Yang, Xiao 2 ; Zhang, Yang 1 ;

作者机构： 1.Sichuan Univ, Coll Life Sci, Key Lab Bioresource & Ecoenvironm, Minist Educ, Chengdu 610065, Peoples R China

2.Chinese Acad Agr Sci, Inst Urban Agr, Chengdu Natl Agr Sci & Technol Ctr, Chengdu 610213, Peoples R China

关键词： lettuce; metabolome; transcriptome; flavonoids; LsBBX20; LsMYB114; LsMYB114-like

期刊名称：SCIENCE CHINA-LIFE SCIENCES （ 影响因子：9.5； 五年影响因子：8.1 ）

ISSN： 1674-7305

年卷期： 2025 年 68 卷 8 期

页码：

收录情况： SCI

摘要： Although lettuce (Lactuca sativa L.) is known for its high flavonoid content, the regulatory mechanisms of flavonoid biosynthesis are yet to be fully investigated. A metabolic network profile was constructed based on metabolomic and transcriptomic datasets derived from five lettuce growth stages. From this analysis, we identified 201 metabolites and 15,775 co-expressed genes, which were subsequently organized into six distinct expression modules. A novel flavonoid biosynthesis regulatory network emerged, comprising the transcription factors LsBBX20, LsMYB114, and LsMYB114-like. Each of these three factors was found to individually regulate the expression of flavonoid biosynthesis genes. LsBBX20 further regulates the expression of LsMYB114 and LsMYB114-like in a light-dependent manner. The results of this study include not only a novel regulatory network of flavonoid biosynthesis but also a valuable dataset for the systematic investigation of metabolic regulation in lettuce.

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