Population genetic structure of Oryza rufipogon and Oryza nivara: implications for the origin of O.nivara

doi:10.1111/mec.13375

	Population genetic structure of Oryza rufipogon and Oryza nivara: implications for the origin of O.nivara
	Liu, Rong 1; Zheng, Xiao-Ming ; Zhou, Lian 1; Zhou, Hai-Fei ; Ge, Song1
	2015
发表期刊	MOLECULAR ECOLOGY
ISSN	0962-1083
卷号	24 期号:20 页码:5211-5228
摘要	Ecological speciation plays a primary role in driving species divergence and adaptation. Oryza rufipogon and Oryza nivara are two incipient species at the early stage of speciation with distinct differences in morphology, life history traits and habitat preference, and therefore provide a unique model for the study of ecological speciation. However, the population genetic structure of the ancestral O.rufipogon has been controversial despite substantial study, and the origin of the derivative O.nivara remains unclear. Here, based on sequences of 10 nuclear and two chloroplast loci from 26 wild populations across the entire geographic ranges of the two species, we conducted comprehensive analyses using population genetics, phylogeography and species distribution modelling (SDM) approaches. In addition to supporting the two previously reported major subdivisions, we detected four genetically distinct groups within O.rufipogon and found no correlation between the genetic groups and either species identity or geographical regions. The SDM clearly showed substantial change in the distribution range of O.rufipogon in history, demonstrating that the repeated extinction and colonization of local populations due to multiple glacial-interglacial cycles during the Quaternary was most likely the main factor shaping the confounding population genetic structure of O.rufipogon. Moreover, we found significant differences between the two species in climate preferences, suggestive of an important role for climatic factors in the adaptation, persistence and expansion of O.nivara. Finally, based on the genetic pattern and dynamics of the O. nivara populations, we hypothesize that O.nivara might have independently originated multiple times from different O.rufipogon populations.
关键词	ecological speciation population genetic structure adaptation wild rice
学科领域	Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
DOI	10.1111/mec.13375
收录类别	SCI
语种	英语
WOS关键词	ASIAN WILD-RICE ; DEMOGRAPHIC HISTORY ; CULTIVATED RICE ; STATISTICAL PROPERTIES ; ECOLOGICAL SPECIATION ; SPECIES DISTRIBUTIONS ; NUCLEOTIDE VARIATION ; MULTILOCUS ANALYSIS ; SATIVA ; DIFFERENTIATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000363273100011
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-294X
资助机构	National Natural Science Foundation of China [91231201, 30990240, 31070195]
作者邮箱	gesong@ibcas.ac.cn
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25833
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Rong,Zheng, Xiao-Ming,Zhou, Lian,et al. Population genetic structure of Oryza rufipogon and Oryza nivara: implications for the origin of O.nivara[J]. MOLECULAR ECOLOGY,2015,24(20):5211-5228.
APA	Liu, Rong,Zheng, Xiao-Ming,Zhou, Lian,Zhou, Hai-Fei,&Ge, Song.(2015).Population genetic structure of Oryza rufipogon and Oryza nivara: implications for the origin of O.nivara.MOLECULAR ECOLOGY,24(20),5211-5228.
MLA	Liu, Rong,et al."Population genetic structure of Oryza rufipogon and Oryza nivara: implications for the origin of O.nivara".MOLECULAR ECOLOGY 24.20(2015):5211-5228.

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