Combined metabolomics and transcriptomics analysis reveals the mechanism underlying blue light-mediated promotion of flavones and flavonols accumulation in Ligusticum chuanxiong Hort. microgreens

文献类型： 外文期刊

第一作者： Wu, Wenxian

作者： Wu, Wenxian;Luo, Xiumei;Wang, Ying;Xie, Xiulan;Li, Linxuan;Zhu, Tingting;Ren, Maozhi;Wu, Wenxian;Luo, Xiumei;Wang, Ying;Xie, Xiulan;Li, Linxuan;Zhu, Tingting;Ren, Maozhi;Lan, Yizhou

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关键词： Chuanxiong microgreens; Blue light; Flavonoid accumulation; Metabolomics; Transcriptomics

期刊名称：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY （ 影响因子：5.4； 五年影响因子：6.0 ）

ISSN： 1011-1344

年卷期： 2023 年 242 卷

页码：

收录情况： SCI

摘要： Ligusticum chuanxiong Hort. (Chuanxiong) is an important Chinese medicinal herb, whose rhizomes are widely used as raw materials for treating various diseases caused by blood stasis. The fresh tender stems and leaves of Chuanxiong are also consumed and have the potential as microgreens. Here, we investigated the effect of light spectra on yield and total flavonoid content of Chuanxiong microgreens by treatment with LED-based white light (WL), red light (RL), blue light (BL), and continuous darkness (DD). The results showed that WL and BL reduced biomass accumulation but significantly increased total flavonoid content compared to RL or DD treatments. Widely targeted metabolomics analysis confirmed that BL promoted the accumulation of flavones and flavonols in Chuanxiong microgreens. Further integration of transcriptomics and metabolomics analysis revealed the mechanism by which BL induces the up-regulation of transcription factors such as HY5 and MYBs, promotes the expression of key genes targeted for flavonoid biosynthesis, and ultimately leads to the accumulation of flavones and flavonols. This study suggests that blue light is a proper light spectra to improve the quality of Chuanxiong microgreens, and the research results lay a foundation for guiding the de-etiolation of Chuanxiong microgreens to obtain both yield and quality in production practice.

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