Metabolite signatures of diverse Camellia sinensis tea populations

Xiaomin Yu, Jiajing Xiao, Si Chen, Yuan Yu, Jianqiang Ma, Yuzhen Lin, Ruizi Li, Jun Lin, Zhijun Fu, Qiongqiong Zhou, Qianlin Chao, Liang Chen (), Zhenbiao Yang () and Renyi Liu ()
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Xiaomin Yu: Fujian Agriculture and Forestry University
Jiajing Xiao: Chinese Academy of Sciences
Si Chen: Fujian Agriculture and Forestry University
Yuan Yu: Fujian Agriculture and Forestry University
Jianqiang Ma: Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences
Yuzhen Lin: Fujian Agriculture and Forestry University
Ruizi Li: Fujian Agriculture and Forestry University
Jun Lin: Fujian Agriculture and Forestry University
Zhijun Fu: Fujian Agriculture and Forestry University
Qiongqiong Zhou: Henan Agricultural University
Qianlin Chao: Wuyi Star Tea Industry Co., Ltd
Liang Chen: Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences
Zhenbiao Yang: University of California at Riverside
Renyi Liu: Fujian Agriculture and Forestry University

Nature Communications, 2020, vol. 11, issue 1, 1-14

Abstract: Abstract The tea plant (Camellia sinensis) presents an excellent system to study evolution and diversification of the numerous classes, types and variable contents of specialized metabolites. Here, we investigate the relationship among C. sinensis phylogenetic groups and specialized metabolites using transcriptomic and metabolomic data on the fresh leaves collected from 136 representative tea accessions in China. We obtain 925,854 high-quality single-nucleotide polymorphisms (SNPs) enabling the refined grouping of the sampled tea accessions into five major clades. Untargeted metabolomic analyses detect 129 and 199 annotated metabolites that are differentially accumulated in different tea groups in positive and negative ionization modes, respectively. Each phylogenetic group contains signature metabolites. In particular, CSA tea accessions are featured with high accumulation of diverse classes of flavonoid compounds, such as flavanols, flavonol mono-/di-glycosides, proanthocyanidin dimers, and phenolic acids. Our results provide insights into the genetic and metabolite diversity and are useful for accelerated tea plant breeding.

Date: 2020
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DOI: 10.1038/s41467-020-19441-1

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