Low genetic diversity and high genetic divergence caused by inbreeding and geographical isolation in the populations of endangered species Loropetalum subcordatum (Hamamelidaceae) endemic to China

	Low genetic diversity and high genetic divergence caused by inbreeding and geographical isolation in the populations of endangered species Loropetalum subcordatum (Hamamelidaceae) endemic to China
	Gong, Wei ; Gu, Lei ; Zhang, Dianxiang
刊名	CONSERVATION GENETICS
	2010
卷号	11 期号:6 页码:2281-2288
关键词	Loropetalum subcordatum Autogamy Geographical isolation Genetic diversity and structure Clonal reproduction Conservation strategies Evergreen broadleaved forest
ISSN号	1566-0621
通讯作者	Zhang, DX, Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable U, S China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China
中文摘要	Loropetalum subcordatum (Hamamelidaceae) is one of the most endangered angiosperm species in China. It is narrowly distributed in a few localities in the evergreen broadleaved forest of southern China. Up to now only a few dozen remnant individuals have been found in the four extant populations. In this project, we studied its genetic diversity and population genetic structure using the high resolution molecular marker of amplified fragment length polymorphism. In total, 47 individuals from all the four populations (including all individuals in three populations) were analyzed. Comparably low genetic diversity within populations was revealed and significantly high genetic differentiation among the populations was detected. Four independent groups were identified which corresponded with their geographical ranges. Autogamy is considered to be the major factor contributing to the low genetic variation and high genetic divergence within this species. In addition, small population size, restricted distribution range, geographical isolation and limited seed dispersal may also contribute to the low genetic diversity and high population genetic differentiation. Clonal reproduction was inferred to occur in the two island populations. Suggestions for conservation strategies are provided to preserve the genetic resources of this species.
学科主题	Biodiversity Conservation; Genetics & Heredity
收录类别	SCI
资助信息	National Science Foundation of China [30870367]; Natural Science Foundation of Guangdong Province [9451065005004004]; International Foundation for Science (IFS) [D4830-1]; China Postdoctoral Science Foundation
语种	英语
公开日期	2011-07-08
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/22500]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Gong, Wei,Gu, Lei,Zhang, Dianxiang. Low genetic diversity and high genetic divergence caused by inbreeding and geographical isolation in the populations of endangered species Loropetalum subcordatum (Hamamelidaceae) endemic to China[J]. CONSERVATION GENETICS,2010,11(6):2281-2288.
APA	Gong, Wei,Gu, Lei,&Zhang, Dianxiang.(2010).Low genetic diversity and high genetic divergence caused by inbreeding and geographical isolation in the populations of endangered species Loropetalum subcordatum (Hamamelidaceae) endemic to China.CONSERVATION GENETICS,11(6),2281-2288.
MLA	Gong, Wei,et al."Low genetic diversity and high genetic divergence caused by inbreeding and geographical isolation in the populations of endangered species Loropetalum subcordatum (Hamamelidaceae) endemic to China".CONSERVATION GENETICS 11.6(2010):2281-2288.