数字农科院2.0

Non-Targeted Metabolomic Analysis Based On U.ltra-High-Performance Liquid Chromatography Quadrupole T ime-Of-Flight Tandem Mass Spectrometry Reveals The Effects Of Grafting On Non-Volatile Metabolites In Fresh Tea Leaves (Camellia Sinensis L.)

文献类型： 外文期刊

作者： Lu, Meiling;Ma, Chengying;Miao, Aiqing;Chen, Wei;Guo, Weiqing;Li, Junxing;Qiao, Xiaoyan;Qi, Dandan

作者机构：

关键词： grafting; non-volatile metabolites; non-targeted metabolic analysis; UHPLC-QTOF/MS

期刊名称： JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

ISSN： 0021-8561

年卷期： 2019 年 67 卷 23 期

页码：

摘要： To investigate the effects of grafting on non-volatile metabolites in tea, non-targeted metabolomic analyses of fresh leaves were performed on the basis of ultra-high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry (UHPLC-QTOF/MS). One non-grafted YingHong No. 9 and four grafted tea [grafting scion YingHong No. 9 on four different rootstocks, BaiMao No. 2 (BM2), BaiYeDanCong (BY), HeiYeShuiXian (HY), and WuLingHong (WLH)] were chosen as materials. In total, 32 differential metabolites were identified, including phenolic acids, flavan-3-ols, dimeric catechins, flavonol and flavonol/flavone glycosides, etc. Partial least squares discrimination analysis and hierarchical cluster analysis showed various effects of different rootstocks on metabolites. Thereinto, rootstocks of WLH and BY showed extremely outstanding performance in up- and downregulating these metabolites, respectively. Differential metabolites were enriched into three crucial pathways, including biosynthesis of phenylpropanoids, flavonoid biosynthesis, and flavone and flavonol biosynthesis, which might influence the quality of tea. This study provides a theoretical basis for grafting-related variations of non-volatile metabolites in fresh tea leaves.

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