Phylogeographic analysis reveals significant spatial genetic structure of Incarvillea sinensis as a product of mountain building
| Autor: | Douglas E. Soltis, Yao-Wu Xing, Tao Su, Zhe-Kun Zhou, David L. Dilcher, Shaotian Chen |
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| Rok vydání: | 2011 |
| Předmět: |
China
Lineage (genetic) Eastern Asian plant DNA Plant Genetic Structures Molecular Sequence Data Allopatric speciation Biodiversity Plant Science Biology Evolution Molecular Spatial genetic pattern Genetic drift lcsh:Botany Ecosystem Genetic diversity geography Plateau geography.geographical_feature_category Base Sequence Ecology cpDNA variations DNA Chloroplast Genetic Variation Sequence Analysis DNA lcsh:QK1-989 Incarvillea sinensis Phylogeography Haplotypes Genetic structure Bignoniaceae Research Article |
| Zdroj: | BMC Plant Biology BMC Plant Biology, Vol 12, Iss 1, p 58 (2012) |
| ISSN: | 1471-2229 |
| Popis: | Background Incarvillea 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. Results A total of 16 haplotypes was identified, and significant genetic differentiation was revealed (G ST =0.843, N ST = 0.975, P Conclusions The 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. |
| Databáze: | OpenAIRE |
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