Haplotype-resolved genome assembly provides insights into evolutionary history of the tea plant Camellia sinensis
文献类型： 外文期刊
作者： Zhang, Xingtan 1 ; Chen, Shuai 1 ; Shi, Longqing 1 ; Gong, Daping 6 ; Zhang, Shengcheng 4 ; Zhao, Qian 1 ; Zhan, Dongl 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Plant Protect, Inst Appl Ecol, State Key Lab Ecol Pest Control Fujian & Taiwan C, Fuzhou, Peoples R China
2.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Guangdong Lab Lingnan Modern Agr, Minist Agr,Shenzhen Branch,Genome Anal Lab, Shenzhen, Peoples R China
3.Fujian Acad Agr Sci, Inst Rice, Fuzhou, Peoples R China
4.Fujian Agr & Forestry Univ, Key Lab Genet, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Ctr Genom & Biotechnol, Fuzhou, Peoples R China
5.Fujian Agr & Forestry Univ, Joint Int Res Lab Ecol Pest Control, Ministerial & Prov Joint Innovat Ctr Safety Prod, Minist Educ, Fuzhou, Peoples R China
6.Chinese Acad Agr Sci, Tobacco Res Inst, Qingdao, Peoples R China
7.Hangzhou Kaitai Biotech Co Ltd, Hangzhou, Peoples R China
8.Brock Univ, Dept Biol Sci, St Catharines, ON, Canada
9.Fujian Agr & Forestry Univ, Coll Hort, Key Lab Tea Sci, Fuzhou, Peoples R China
10.Fujian Acad Agr Sci, Tea Res Inst, Fuzhou, Peoples R China
11.Jiangxi Sericulture & Tea Res Inst, Nanchang, Jiangxi, Peoples R China
12.Cent South Univ Forestry & Technol, Minist Educ, Key Lab Cultivat & Protect Nonwood Forest Trees, Changsha, Peoples R China
13.Univ Illinois, Dept Plant Biol, Urbana, IL USA
14.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Mengla, Peoples R China
期刊名称：NATURE GENETICS （ 影响因子：38.33； 五年影响因子：36.431 ）
ISSN： 1061-4036
年卷期： 2021 年 53 卷 8 期
页码：
收录情况： SCI
摘要： Haplotype-resolved genome assembly of an Oolong tea cultivar Tieguanyin and population genomic analyses of 190 Camellia accessions provide insights into the evolutionary history of the tea plant Camellia sinensis. Tea is an important global beverage crop and is largely clonally propagated. Despite previous studies on the species, its genetic and evolutionary history deserves further research. Here, we present a haplotype-resolved assembly of an Oolong tea cultivar, Tieguanyin. Analysis of allele-specific expression suggests a potential mechanism in response to mutation load during long-term clonal propagation. Population genomic analysis using 190 Camellia accessions uncovered independent evolutionary histories and parallel domestication in two widely cultivated varieties, var. sinensis and var. assamica. It also revealed extensive intra- and interspecific introgressions contributing to genetic diversity in modern cultivars. Strong signatures of selection were associated with biosynthetic and metabolic pathways that contribute to flavor characteristics as well as genes likely involved in the Green Revolution in the tea industry. Our results offer genetic and molecular insights into the evolutionary history of Camellia sinensis and provide genomic resources to further facilitate gene editing to enhance desirable traits in tea crops.
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