Phylogeography of Juniperus przewalskii (Cupressaceae) inferred from the chloroplast DNA trnT-trnF sequence variation
文献类型：期刊论文
| 作者 | Zhang, Q; Yang, R; Wang, Q; Liu, JQ |
| 刊名 | acta phytotaxonomica sinica
 |
| 出版日期 | 2005-11-01 |
| 卷号 | 43期号:6页码:503-512 |
| 关键词 | Qinghai-Tibet Plateau Juniperus przewalskii cpDNA trnT-trnF phylogeography bottleneck founder effect |
| 英文摘要 | the topological effect of the qinghai-tibet plateau during the quaternary climatic oscillation must have important effects on the patterns of spatial distribution and genetic structure of organisms distributed there. to obtain a better understanding of the historical dynamics of present-day species in this region, we examined the population structure of chloroplast trnt-trnf sequence variation in juniperus przewalskii, an endemic tree species mainly distributed in the northeast plateau. data were obtained for 392 trees from 20 populations covering the total distributional range of the species. three cpdna haplotypes were recorded and were structured into two geographical areas: haplotype a was present on the plateau platform, while all three haplotypes occurred along the plateau edge. total genetic diversity, ht, was 0.511, with most variation distributed among rather than within populations (g(st)=0.847). along the low altitudinal plateau edge, haplotypes a, b and c tended to be fixed or nearly fixed in different populations, indicating that the species may have survived the last glacial period in different refugia within this area, and the bottlenecks due to the repeated reduction and expansion of the population size resulted in the reduction of biodiversity. however, in one population both haplotypes occurred at intermediate frequencies, indicating the possibility of a contact zone or less strong bottleneck effect. on the eastern plateau platform, haplotype a was commonly fixed in the current disjunct populations, suggesting a common postglacial recolonization and a following founder effect. our results indicate that there might exist in multi-glacial refugia in the plateau edge and both bottleneck and founder effects resulting from the repeated climatic oscillation combined had played important roles in shaping the current haplotype distribution pattern of this tree species. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | plant sciences |
| 研究领域[WOS] | plant sciences |
| 关键词[WOS] | mitochondrial-dna ; molecular phylogeography ; intraspecific variation ; glacial refugia ; ice ages ; amplification ; inheritance ; diversity ; variance ; regions |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000233687600002 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/6850]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, NW Plateau Inst Biol, Qinghai Tibet Plateau Biol Evolut & Adaptat Lab, Xining 810008, Peoples R China 2.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Q,Yang, R,Wang, Q,et al. Phylogeography of Juniperus przewalskii (Cupressaceae) inferred from the chloroplast DNA trnT-trnF sequence variation[J]. acta phytotaxonomica sinica,2005,43(6):503-512. |
| APA | Zhang, Q,Yang, R,Wang, Q,&Liu, JQ.(2005).Phylogeography of Juniperus przewalskii (Cupressaceae) inferred from the chloroplast DNA trnT-trnF sequence variation.acta phytotaxonomica sinica,43(6),503-512. |
| MLA | Zhang, Q,et al."Phylogeography of Juniperus przewalskii (Cupressaceae) inferred from the chloroplast DNA trnT-trnF sequence variation".acta phytotaxonomica sinica 43.6(2005):503-512. |
入库方式： OAI收割
来源：西北高原生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。