Knowledge Management System of Kunming Institute of Botany,CAS
Phylogeographic analysis reveals significant spatial genetic structure of Incarvillea sinensisas a product of mountain building | |
Chen,Shaotian1; Xing,Yaowu2,3; Su,Tao2; Zhou,Zhekun1,2![]() | |
2012-04-30 | |
发表期刊 | BMC Plant Biology
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ISSN | 1471-2229 |
卷号 | 12期号:1 |
摘要 | AbstractBackgroundIncarvillea sinensis is widely distributed from Southwest China to Northeast China and in the Russian Far East. The distribution of this species was thought to be influenced by the uplift of the Qinghai-Tibet Plateau and Quaternary glaciation. To reveal the imprints of geological events on the spatial genetic structure of Incarvillea sinensis, we examined two cpDNA segments ( trnH- psbA and trnS- trnfM) in 705 individuals from 47 localities.ResultsA total of 16 haplotypes was identified, and significant genetic differentiation was revealed (GST =0.843, NST?=?0.975, P?0.05). The survey detected two highly divergent cpDNA lineages connected by a deep gap with allopatric distributions: the southern lineage with higher genetic diversity and differentiation in the eastern Qinghai-Tibet Plateau, and the northern lineage in the region outside the Qinghai-Tibet Plateau. The divergence between these two lineages was estimated at 4.4 MYA. A correlation between the genetic and the geographic distances indicates that genetic drift was more influential than gene flow in the northern clade with lower diversity and divergence. However, a scenario of regional equilibrium between gene flow and drift was shown for the southern clade. The feature of spatial distribution of the genetic diversity of the southern lineage possibly indicated that allopatric fragmentation was dominant in the collections from the eastern Qinghai-Tibet Plateau.ConclusionsThe results revealed that the uplift of the Qinghai-Tibet Plateau likely resulted in the significant divergence between the lineage in the eastern Qinghai-Tibet Plateau and the other one outside this area. The diverse niches in the eastern Qinghai-Tibet Plateau created a wide spectrum of habitats to accumulate and accommodate new mutations. The features of genetic diversity of populations outside the eastern Qinghai-Tibet Plateau seemed to reveal the imprints of extinction during the Glacial and the interglacial and postglacial recolonization. Our study is a typical case of the significance of the uplift of the Qinghai-Tibet Plateau and the Quaternary Glacial in spatial genetic structure of eastern Asian plants, and sheds new light on the evolution of biodiversity in the Qinghai-Tibet Plateau at the intraspecies level. |
关键词 | Spatial genetic pattern cpDNA variations Phylogeography Eastern Asian plant |
DOI | 10.1186/1471-2229-12-58 |
语种 | 英语 |
WOS记录号 | BMC:10.1186/1471-2229-12-58 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.kib.ac.cn/handle/151853/61761 |
专题 | 中国科学院昆明植物研究所 |
通讯作者 | Zhou,Zhekun |
作者单位 | 1.Kunming Institute of Botany, Chinese Academy of Sciences; Key Laboratory of Biodiversity and Biogeography 2.Chinese Academy of Sciences; Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden 3.Institute of Systematic Botany, University of Zürich 4.Indiana University; Department of Biology 5.University of Florida; Department of Biology |
推荐引用方式 GB/T 7714 | Chen,Shaotian,Xing,Yaowu,Su,Tao,et al. Phylogeographic analysis reveals significant spatial genetic structure of Incarvillea sinensisas a product of mountain building[J]. BMC Plant Biology,2012,12(1). |
APA | Chen,Shaotian,Xing,Yaowu,Su,Tao,Zhou,Zhekun,Dilcher,Emeritus David L,&Soltis,Douglas E.(2012).Phylogeographic analysis reveals significant spatial genetic structure of Incarvillea sinensisas a product of mountain building.BMC Plant Biology,12(1). |
MLA | Chen,Shaotian,et al."Phylogeographic analysis reveals significant spatial genetic structure of Incarvillea sinensisas a product of mountain building".BMC Plant Biology 12.1(2012). |
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