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Draft genome sequence of Camellia sinensis var. sinensis provides insights into the evolution of the tea genome and tea quality

2018; National Academy of Sciences; Volume: 115; Issue: 18 Linguagem: Inglês

10.1073/pnas.1719622115

1091-6490

Chaoling Wei, Hua Yang, Songbo Wang, Jian Zhao, Chun Liu, Liping Gao, Enhua Xia, Ying Lü, Yuling Tai, Guangbiao She, Jun Sun, Haisheng Cao, Wei Tong, Qiang Gao, Yeyun Li, Wei‐Wei Deng, Xiaolan Jiang, Wenzhao Wang, Qi Chen, Shihua Zhang, Haijing Li, Junlan Wu, Ping Wang, Penghui Li, Cheng-Ying Shi, Fengya Zheng, Jianbo Jian, Bei Huang, Dai Shan, Mingming Shi, Congbing Fang, Yi Yue, Fangdong Li, Daxiang Li, Shu Wei, Bin Han, Changjun Jiang, Ye Yin, Tao Xia, Zhengzhu Zhang, Jeffrey L. Bennetzen, Shancen Zhao, Xiaochun Wan,

Food Quality and Safety Studies

Significance A high-quality genome assembly of Camellia sinensis var. sinensis facilitates genomic, transcriptomic, and metabolomic analyses of the quality traits that make tea one of the world’s most-consumed beverages. The specific gene family members critical for biosynthesis of key tea metabolites, monomeric galloylated catechins and theanine, are indicated and found to have evolved specifically for these functions in the tea plant lineage. Two whole-genome duplications, critical to gene family evolution for these two metabolites, are identified and dated, but are shown to account for less amplification than subsequent paralogous duplications. These studies lay the foundation for future research to understand and utilize the genes that determine tea quality and its diversity within tea germplasm.