Draft genome sequence of <i>Camellia sinensis</i> var. <i>sinensis</i> provides insights into the evolution of the tea genome and tea quality
Chaoling WeiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Hua YangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Songbo WangBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Jian ZhaoState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Chun LiuBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Liping GaoState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Enhua XiaState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Ying LüCollege of Fisheries and Life Science, Shanghai Ocean University, 201306 Shanghai, China;Yuling TaiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Guangbiao SheState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Jun SunState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Haisheng CaoState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Wei TongState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Qiang GaoBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Yeyun LiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Wei‐Wei DengState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Xiaolan JiangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Wenzhao WangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Qi ChenState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Shihua ZhangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Haijing LiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Junlan WuState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Ping WangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Penghui LiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Cheng-Ying ShiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Fengya ZhengBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Jianbo JianBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Bei HuangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Dai ShanBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Mingming ShiBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Congbing FangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Yi YueState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Fangdong LiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Daxiang LiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Shu WeiState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Bin HanNational Center for Gene Research, Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, China;Changjun JiangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Ye YinBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Tao XiaState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Zhengzhu ZhangState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;Jeffrey L. BennetzenDepartment of Genetics, University of Georgia, Athens, GA 30602Shancen ZhaoBGI Genomics, BGI–Shenzhen, 518083 Shenzhen, China;Xiaochun WanState Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, China;
2018en
ABI
Аннотация
(CSA), is calculated to ∼0.38 to 1.54 million years ago (Mya). Analysis of genic collinearity reveals that the tea genome is the product of two rounds of whole-genome duplications (WGDs) that occurred ∼30 to 40 and ∼90 to 100 Mya. We provide evidence that these WGD events, and subsequent paralogous duplications, had major impacts on the copy numbers of secondary metabolite genes, particularly genes critical to producing three key quality compounds: catechins, theanine, and caffeine. Analyses of transcriptome and phytochemistry data show that amplification and transcriptional divergence of genes encoding a large acyltransferase family and leucoanthocyanidin reductases are associated with the characteristic young leaf accumulation of monomeric galloylated catechins in tea, while functional divergence of a single member of the glutamine synthetase gene family yielded theanine synthetase. This genome sequence will facilitate understanding of tea genome evolution and tea metabolite pathways, and will promote germplasm utilization for breeding improved tea varieties.
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