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Molecular phylogeography of Fagus engleriana (Fagaceae) in subtropical China: limited admixture among multiple refugia
Lei, Ming1; Wang, Qun2,3; Wu, Zhen-Jian1; Lopez-Pujol, Jordi4,5; Li, De-Zhu2; Zhang, Zhi-Yong1
2012-12-01
发表期刊TREE GENETICS & GENOMES
ISSN1614-2942
卷号8期号:6页码:1203-1212
摘要Beech is one of the most important trees in the temperate and subtropical forests of the Northern Hemisphere. Despite Chinese beeches have the particularity that only grow in subtropical areas, they have received few phylogeographic research. In this study, we sampled 25 populations of the northernmost-distributed Chinese beech, Fagus engleriana, and detected six haplotypes across 350 individuals by using sequences of two chloroplast intergenic spacers. The chloroplast genetic diversity was relatively low (h (T) = 0.659), with most genetic variance residing among populations (G (ST) = 0.831, N (ST) = 0.855, G (ST)a parts per thousand N (ST)). SAMOVA analysis indicated that populations clustered into six groups with little admixture among them (most groups were characterized by a unique hapotype). Pairwise difference among haplotypes and Fu's Fs statistic indicated that populations of F. engleriana have not experienced recent sudden expansions. Both the phylogeographic and demographic patterns found in this study suggest that F. engleriana remained fragmented in multiple refugia throughout the Pleistocene climatic changes, and experienced limited both glacial and interglacial/postglacial expansion. The results of this study imply that long-term isolation among multiple refugia, coupled with little admixture among populations of different refugia provided numerous opportunities for population divergence and allopatric speciation, which might be a driving factor for the exceptionally broad temperate species diversity in southern China.
关键词Fagus Engleriana Phylogeography Chloroplast Dna Subtropical China
资助信息National Science Foundation of China [30760016]; Cultivation Program for Young Scientists of Jiangxi Province [2008DQ01500]
收录类别SCI
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/16006
专题中国西南野生生物种质资源库
作者单位1.Jiangxi Agr Univ, Lab Subtrop Biodivers, Nanchang 330045, Jiangxi, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
4.Bot Inst Barcelona IBB CSIC ICUB, Barcelona 08038, Catalonia, Spain
5.Univ Barcelona, Fac Farm, Lab Bot, E-08028 Barcelona, Catalonia, Spain
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Lei, Ming,Wang, Qun,Wu, Zhen-Jian,et al. Molecular phylogeography of Fagus engleriana (Fagaceae) in subtropical China: limited admixture among multiple refugia[J]. TREE GENETICS & GENOMES,2012,8(6):1203-1212.
APA Lei, Ming,Wang, Qun,Wu, Zhen-Jian,Lopez-Pujol, Jordi,Li, De-Zhu,&Zhang, Zhi-Yong.(2012).Molecular phylogeography of Fagus engleriana (Fagaceae) in subtropical China: limited admixture among multiple refugia.TREE GENETICS & GENOMES,8(6),1203-1212.
MLA Lei, Ming,et al."Molecular phylogeography of Fagus engleriana (Fagaceae) in subtropical China: limited admixture among multiple refugia".TREE GENETICS & GENOMES 8.6(2012):1203-1212.
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