Phylogeography and genetic structure of a Tertiary relict tree species, Tapiscia sinensis (Tapisciaceae): implications for conservation

doi:10.1093/aob/mcv112

CORC > 武汉植物园 > 中国科学院武汉植物园

	Phylogeography and genetic structure of a Tertiary relict tree species, Tapiscia sinensis (Tapisciaceae): implications for conservation
	Zhang, Jinju 1; Li, Zuozhou 1; Fritsch, Peter W.2; Tian, Hua 1; Yang, Aihong 1; Yao, Xiaohong 1
刊名	ANNALS OF BOTANY
	2015-10-01
卷号	116 期号:5 页码:727-737
关键词	Conservation ecological niche modelling multiple refugia Pleistocene climate change Tertiary relict tree species local range expansion sub-tropical China Tapiscia sinensis Staphyleaceae Tapisciaceae
ISSN号	0305-7364
DOI	10.1093/aob/mcv112
英文摘要	Background and Aims The phylogeography of plant species in sub-tropical China remains largely unclear. This study used Tapiscia sinensis, an endemic and endangered tree species widely but disjunctly distributed in subtropical China, as a model to reveal the patterns of genetic diversity and phylogeographical history of Tertiary relict plant species in this region. The implications of the results are discussed in relation to its conservation management. Methods Samples were taken from 24 populations covering the natural geographical distribution of T. sinensis. Genetic structure was investigated by analysis of molecular variance (AMOVA) and spatial analysis of molecular variance (SAMOVA). Phylogenetic relationships among haplotypes were constructed with maximum parsimony and haplotype network methods. Historical population expansion events were tested with pairwise mismatch distribution analysis and neutrality tests. Species potential range was deduced by ecological niche modelling (ENM). Key Results A low level of genetic diversity was detected at the population level. A high level of genetic differentiation and a significant phylogeographical structure were revealed. The mean divergence time of the haplotypes was approx. 1.33 million years ago. Recent range expansion in this species is suggested by a star-like haplotype network and by the results from the mismatch distribution analysis and neutrality tests. Conclusions Climatic oscillations during the Pleistocene have had pronounced effects on the extant distribution of Tapiscia relative to the Last Glacial Maximum (LGM). Spatial patterns of molecular variation and ENM suggest that T. sinensis may have retreated in south-western and central China and colonized eastern China prior to the LGM. Multiple montane refugia for T. sinense existing during the LGM are inferred in central and western China. The populations adjacent to or within these refugia of T. sinense should be given high priority in the development of conservation policies and management strategies for this endangered species.
资助项目	Natural Scientific Foundation of China[31400476] ; Natural Scientific Foundation of China[31270384] ; Wuhan Botanical Garden, Chinese Academy of Sciences[KSCXZ-EW-J-20]
WOS研究方向	Plant Sciences
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000362842400006
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/196]
专题	中国科学院武汉植物园
通讯作者	Yao, Xiaohong
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Special Agr, Wuhan 430074, Hubei, Peoples R China 2.Calif Acad Sci, Dept Bot, San Francisco, CA 94118 USA
推荐引用方式 GB/T 7714	Zhang, Jinju,Li, Zuozhou,Fritsch, Peter W.,et al. Phylogeography and genetic structure of a Tertiary relict tree species, Tapiscia sinensis (Tapisciaceae): implications for conservation[J]. ANNALS OF BOTANY,2015,116(5):727-737.
APA	Zhang, Jinju,Li, Zuozhou,Fritsch, Peter W.,Tian, Hua,Yang, Aihong,&Yao, Xiaohong.(2015).Phylogeography and genetic structure of a Tertiary relict tree species, Tapiscia sinensis (Tapisciaceae): implications for conservation.ANNALS OF BOTANY,116(5),727-737.
MLA	Zhang, Jinju,et al."Phylogeography and genetic structure of a Tertiary relict tree species, Tapiscia sinensis (Tapisciaceae): implications for conservation".ANNALS OF BOTANY 116.5(2015):727-737.