Genetic structure and differentiation of Oryza sativa L. in China revealed by microsatellites

doi:10.1007/s00122-009-1112-4

	Genetic structure and differentiation of Oryza sativa L. in China revealed by microsatellites
	Zhang, Dongling 1,4; Zhang, Hongliang 1,4; Wang, Meixing 1,4; Sun, Junli 1,4; Qi, Yongwen 1,4; Wang, Fengmei 1,4; Wei, Xinghua 2; Han, Longzhi 3; Wang, Xiangkun 1,4; Li, Zichao 1,4
刊名	THEORETICAL AND APPLIED GENETICS
	2009
卷号	119 期号:6 页码:1105-1117
ISSN号	0040-5752
DOI	10.1007/s00122-009-1112-4
通讯作者	Zhang, Dongling
英文摘要	China is one of the largest centers of genetic diversity of Oryza sativa L. in the world. Using a genetically representative primary core collection of 3,024 rice landraces in China, we analyzed the genetic structure and intraspecific differentiation of O. sativa, and the directional evolution of SSR. The genetic structure was investigated by model-based structure analysis and construction of neighbor-joining phylogenetic tree. Comparison between genetic structure and predefined populations according to Ting's taxonomic system revealed a hierarchical genetic structure: two distinct subspecies, each with three ecotypes and different numbers of geo-ecogroups within each ecotype. Two subspecies evidently resulted from adaptation to different environments. The different cropping systems imposed on the subspecies led to further differentiation, but the variation within each subspecies resulted from different causes. Indica, under tropical-like or lowland-like environments, exhibited clear differentiation among seasonal ecotypes, but not among soil-watery ecotypes; and japonica showed clear differences between soil water regime ecotypes, but not among seasonal ecotypes. Chinese cultivated rice took on evident directional evolution in microsatellite allele size at several aspects, such as subspecies and geographical populations. Japonica has smaller allele sizes than indica, and this may partly be the result of their different domestication times. Allele size was also negatively correlated with latitude and altitude, and this may be interpreted by different mutation rates, selection pressures, and population size effects under different environments and cropping systems.
学科主题	Agronomy ; Plant Sciences ; Genetics & Heredity ; Horticulture ; AGRONOMY ; GENETICS & HEREDITY ; HORTICULTURE ; PLANT SCIENCES
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000270435900012
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5484]
专题	作物科学研究所_种质资源保存与研究中心
作者单位	1.China Agr Univ, Key Lab Crop Genom & Genet Improvement, Minist Agr, Beijing 100193, Peoples R China 2.China Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China 3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China 4.China Agr Univ, Beijing Key Lab Crop Genet Improvement, Beijing 100193, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Dongling,Zhang, Hongliang,Wang, Meixing,et al. Genetic structure and differentiation of Oryza sativa L. in China revealed by microsatellites[J]. THEORETICAL AND APPLIED GENETICS,2009,119(6):1105-1117.
APA	Zhang, Dongling.,Zhang, Hongliang.,Wang, Meixing.,Sun, Junli.,Qi, Yongwen.,...&Li, Zichao.(2009).Genetic structure and differentiation of Oryza sativa L. in China revealed by microsatellites.THEORETICAL AND APPLIED GENETICS,119(6),1105-1117.
MLA	Zhang, Dongling,et al."Genetic structure and differentiation of Oryza sativa L. in China revealed by microsatellites".THEORETICAL AND APPLIED GENETICS 119.6(2009):1105-1117.