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Chloroplast DNA phylogeography of Rhodiola alsia (Crassulaceae) in the Qinghai-Tibet Plateau
Gao, Qingbo1,2; Zhang, Dejun1,2; Chen, Shengyun1,2; Duan, Yizhong1,2; Zhang, Faqi1,2; Li, Yinghu1,2; Chen, Shilong1
2009-11-01
发表期刊BOTANY-BOTANIQUE
ISSN1916-2790
卷号87期号:11页码:1077-1088
文章类型Article
摘要We studied the phylogeography of Rhodiola alsia (Froderstrom) S.H. Fu, which is a perennial herbaceous plant endemic to the Qinghai-Tibet (Q-T) Plateau, by sequencing one intergenic chloroplast spacer, rpl20-rps12 (844 bp). The sampling design included 18 populations and 315 individuals, and spanned the entire distribution range of the species. Thirty-one haplotypes were characterized, and polymorphism was observed both within and among populations. Most haplotypes were restricted to single sites or to neighbouring populations, suggesting an extremely low level of long distance gene flow via seeds. Only three haplotypes were common and widespread throughout the distributional range of R. alsia. The present geographical distribution of haplotypes probably reflects an ancient geographical pattern between the platform and southeastern margin of the Q-T Plateau identified as genetic hotspot areas. We suggest that populations of R. alsia survived in isolated refugia located in the platform and the southeastern margin of the Q-T Plateau during the Quaternary glaciation, at least during the last glaciation maximum (LGM, 32 000-16 000 years ago). The populations of R. alsia were geographically isolated by a subsequent local range expansion and independent evolution. The genetic structure of R. alsia is very different from previous phylogeographical studies of Q-T Plateau alpine plants and illustrates the importance of species-specific characteristics such as distribution areas and life-history traits which are mainly responsible for different patterns of genetic variation. Our investigation thus provides a new pattern of several refugia on the plateau platform.; We studied the phylogeography of Rhodiola alsia (Froderstrom) S.H. Fu, which is a perennial herbaceous plant endemic to the Qinghai-Tibet (Q-T) Plateau, by sequencing one intergenic chloroplast spacer, rpl20-rps12 (844 bp). The sampling design included 18 populations and 315 individuals, and spanned the entire distribution range of the species. Thirty-one haplotypes were characterized, and polymorphism was observed both within and among populations. Most haplotypes were restricted to single sites or to neighbouring populations, suggesting an extremely low level of long distance gene flow via seeds. Only three haplotypes were common and widespread throughout the distributional range of R. alsia. The present geographical distribution of haplotypes probably reflects an ancient geographical pattern between the platform and southeastern margin of the Q-T Plateau identified as genetic hotspot areas. We suggest that populations of R. alsia survived in isolated refugia located in the platform and the southeastern margin of the Q-T Plateau during the Quaternary glaciation, at least during the last glaciation maximum (LGM, 32 000-16 000 years ago). The populations of R. alsia were geographically isolated by a subsequent local range expansion and independent evolution. The genetic structure of R. alsia is very different from previous phylogeographical studies of Q-T Plateau alpine plants and illustrates the importance of species-specific characteristics such as distribution areas and life-history traits which are mainly responsible for different patterns of genetic variation. Our investigation thus provides a new pattern of several refugia on the plateau platform.
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]METAGENTIANA-STRIATA GENTIANACEAE ; NANUM L. GAUDIN ; EUROPEAN ALPS ; GENETIC DIVERSITY ; POSTGLACIAL COLONIZATION ; SEQUENCE VARIATION ; GLACIAL SURVIVAL ; CLIMATE-CHANGE ; ALPINE PLANTS ; ICE AGES
收录类别SCI
语种英语
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000271581300006
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1810
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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Gao, Qingbo,Zhang, Dejun,Chen, Shengyun,et al. Chloroplast DNA phylogeography of Rhodiola alsia (Crassulaceae) in the Qinghai-Tibet Plateau[J]. BOTANY-BOTANIQUE,2009,87(11):1077-1088.
APA Gao, Qingbo.,Zhang, Dejun.,Chen, Shengyun.,Duan, Yizhong.,Zhang, Faqi.,...&Chen, Shilong.(2009).Chloroplast DNA phylogeography of Rhodiola alsia (Crassulaceae) in the Qinghai-Tibet Plateau.BOTANY-BOTANIQUE,87(11),1077-1088.
MLA Gao, Qingbo,et al."Chloroplast DNA phylogeography of Rhodiola alsia (Crassulaceae) in the Qinghai-Tibet Plateau".BOTANY-BOTANIQUE 87.11(2009):1077-1088.
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