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Population sequencing enhances understanding of tea plant evolution

文献类型： 外文期刊

作者： Wang, Xinchao 1 ; Feng, Hu 2 ; Chang, Yuxiao 2 ; Ma, Chunlei 1 ; Wang, Liyuan 1 ; Hao, Xinyuan 1 ; Li, A'lun 2 ; Cheng, H 1 ;

作者机构： 1.Chinese Acad Agr Sci, Natl Ctr Tea Plant Improvement, Minist Agr & Rural Affairs, Tea Res Inst,Key Lab Tea Biol & Resource Utilizat, Hangzhou 310008, Peoples R China

2.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Minist Agr & Rural Affairs, Lingnan Guangdong Lab Modern Agr,Genome Anal Lab, Shenzhen 518120, Peoples R China

3.Yunnan Acad Agr Sci, Tea Res Inst, Menghai 650231, Peoples R China

4.Chinese Acad Sci, Kunming Inst Zool, State Key Lab Genet Resources & Evolut, Kunming 650223, Yunnan, Peoples R China

5.Chinese Acad Sci, Ctr Excellence Anim Evolut & Genet, Kunming 650223, Yunnan, Peoples R China

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2020 年 11 卷 1 期

页码：

收录情况： SCI

摘要： Tea is an economically important plant characterized by a large genome, high heterozygosity, and high species diversity. In this study, we assemble a 3.26-Gb high-quality chromosome-scale genome for the 'Longjing 43' cultivar of Camellia sinensis var. sinensis. Genomic resequencing of 139 tea accessions from around the world is used to investigate the evolution and phylogenetic relationships of tea accessions. We find that hybridization has increased the heterozygosity and wide-ranging gene flow among tea populations with the spread of tea cultivation. Population genetic and transcriptomic analyses reveal that during domestication, selection for disease resistance and flavor in C. sinensis var. sinensis populations has been stronger than that in C. sinensis var. assamica populations. This study provides resources for marker-assisted breeding of tea and sets the foundation for further research on tea genetics and evolution.

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