文献类型： 外文期刊
第一作者： Li, Chun-Fang
作者： Li, Chun-Fang;Ma, Jian-Qang;Huang, Dan-Juan;Ma, Chun-Lei;Jin, Ji-Qiang;Yao, Ming-Zhe;Chen, Liang;Li, Chun-Fang
作者机构：
关键词： albino tea cultivar; UPLC-Q-TOF/MS; GC x GC-TOF/MS; metabolomics
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）
ISSN： 0021-8561
年卷期： 2018 年 66 卷 8 期
页码：
收录情况： SCI
摘要： Albino tea cultivars are special mutants of tea plants with white or yellow leaf color. In this study, three albino tea cultivars, including 'Anji Baicha', 'Huangjinya', and 'Baijiguan', and two green tea cultivars, longjing 43' and Tuding Dabaicha', were applied to metabolite profiling by gas chromatography mass spectrometry and ultraperformance liquid chromatography mass spectrometry. Multivariate analyses revealed significantly different metabolite phenotypes in leaves among albino cultivars and green cultivars. The differential metabolite-related pathways included galactose metabolism, tryptophan metabolism, phenylpropanoid biosynthesis, and flavonoid biosynthesis. For the young leaves of albino cultivars, the sugar (sorbitol and erythrose) and amino acid (mainly proline, isoleucine, ornithine, aspartic acid, threonine, and valine) concentrations increased, whereas gallocatechin and epigallocatechin gallate concentrations decreased. These results reveal the divergence in metabolic profiling between tea plant cultivars with different leaf colors. With the development of leaves, the concentrations of flavonoids increased largely in the older leaves of albino cultivars.
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