Genetic diversity and domestication origin of tea plant Camellia taliensis(Theaceae) as revealed by microsatellite markers

doi:10.1186/1471-2229-14-14

KIB OpenIR

	Genetic diversity and domestication origin of tea plant Camellia taliensis(Theaceae) as revealed by microsatellite markers
	Zhao,Dong-wei 1,2; Yang,Jun-bo 3; Yang,Shi-xiong 1; Kato,Kenji 4; Luo,Jian-ping 5
	2014-01-09
发表期刊	BMC Plant Biology
ISSN	1471-2229
卷号	14 期号:1
摘要	AbstractBackgroundTea is one of the most popular beverages in the world. Many species in the Thea section of the Camellia genus can be processed for drinking and have been domesticated. However, few investigations have focused on the genetic consequence of domestication and geographic origin of landraces on tea plants using credible wild and planted populations of a single species. Here, C. taliensis provides us with a unique opportunity to explore these issues.ResultsFourteen nuclear microsatellite loci were employed to determine the genetic diversity and domestication origin of C. taliensis, which were represented by 587 individuals from 25 wild, planted and recently domesticated populations. C. taliensis showed a moderate high level of overall genetic diversity. The greater reduction of genetic diversity and stronger genetic drift were detected in the wild group than in the recently domesticated group, indicating the loss of genetic diversity of wild populations due to overexploitation and habitat fragmentation. Instead of the endangered wild trees, recently domesticated individuals were used to compare with the planted trees for detecting the genetic consequence of domestication. A little and non-significant reduction in genetic diversity was found during domestication. The long life cycle, selection for leaf traits and gene flow between populations will delay the emergence of bottleneck in planted trees. Both phylogenetic and assignment analyses suggested that planted trees may have been domesticated from the adjacent central forest of western Yunnan and dispersed artificially to distant places.ConclusionsThis study contributes to the knowledge about levels and distribution of genetic diversity of C. taliensis and provides new insights into genetic consequence of domestication and geographic origin of planted trees of this species. As an endemic tea source plant, wild, planted and recently domesticated C. taliensis trees should all be protected for their unique genetic characteristics, which are valuable for tea breeding.
关键词	Camellia taliensis Domestication Genetic diversity Microsatellite Tea plant
DOI	10.1186/1471-2229-14-14
语种	英语
WOS记录号	BMC:10.1186/1471-2229-14-14
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/61767
专题	中国科学院昆明植物研究所
通讯作者	Yang,Shi-xiong
作者单位	1.Chinese Academy of Sciences; Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany 2.University of Chinese Academy of Sciences 3.Chinese Academy of Sciences; Germplasm Bank of Wild Species, Kunming Institute of Botany 4.Okayama University; Graduate School of Environmental and Life Science 5.Hefei University of Technology; School of Biotechnology and Food Engineering
推荐引用方式 GB/T 7714	Zhao,Dong-wei,Yang,Jun-bo,Yang,Shi-xiong,et al. Genetic diversity and domestication origin of tea plant Camellia taliensis(Theaceae) as revealed by microsatellite markers[J]. BMC Plant Biology,2014,14(1).
APA	Zhao,Dong-wei,Yang,Jun-bo,Yang,Shi-xiong,Kato,Kenji,&Luo,Jian-ping.(2014).Genetic diversity and domestication origin of tea plant Camellia taliensis(Theaceae) as revealed by microsatellite markers.BMC Plant Biology,14(1).
MLA	Zhao,Dong-wei,et al."Genetic diversity and domestication origin of tea plant Camellia taliensis(Theaceae) as revealed by microsatellite markers".BMC Plant Biology 14.1(2014).