文献类型：期刊文献

英文题名：Characterization of color variation in bamboo sheath of Chimonobambusa hejiangensis by UPLC-ESI-MS/MS and RNA sequencing

作者：Yu, Lei[1] Yue, Jinjun[1] Dai, Yaxing[1] Zhang, Ling[2] Wang, Qiu[2] Yuan, Jinling[1]

第一作者：于磊

通信作者：Yuan, JL[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Forestry & Bamboo Bur Changning Cty, Changning 644300, Sichuan, Peoples R China

年份：2023

卷号：23

期号：1

外文期刊名：BMC PLANT BIOLOGY

收录：;Scopus(收录号：2-s2.0-85173354448);WOS:【SCI-EXPANDED(收录号:WOS:001099878100001)】；

基金：This research received funding from the National Key R&D Program of China (2021YFD2200505) and the Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding (2021C02070-4).

语种：英文

外文关键词：Flavonoid; Anthocyanin; Metabolomics; Transcriptome; Chimonobambusa hejiangensis

摘要：Background Chimonobambusa hejiangensis (C.hejiangensis) is a high-quality bamboo species native to China, known for its shoots that are a popular nutritional food. Three C.hejiangensis cultivars exhibit unique color variation in their shoot sheaths, however, the molecular mechanism behind this color change remains unclear.Methods We investigated flavonoid accumulation in the three bamboo cultivar sheaths using metabolomics and transcriptomics.Results UPLC-MS/MS identified 969 metabolites, with 187, 103, and 132 having differential accumulation in the yellow-sheath (YShe) vs. spot-sheath (SShe)/black-sheath (BShe) and SShe vs. BShe comparison groups. Flavonoids were the major metabolites that determined bamboo sheath color through differential accumulation of metabolites (DAMs) analysis. Additionally, there were 33 significantly differentially expressed flavonoid structural genes involved in the anthocyanin synthesis pathway based on transcriptome data. We conducted a KEGG analysis on DEGs and DAMs, revealing significant enrichment of phenylpropanoid and flavonoid biosynthetic pathways. Using gene co-expression network analysis, we identified nine structural genes and 29 transcription factors strongly linked to anthocyanin biosynthesis.Conclusion We identified a comprehensive regulatory network for flavonoid biosynthesis which should improve our comprehension of the molecular mechanisms responsible for color variation and flavonoid biosynthesis in bamboo sheaths.