Phylogeography of Juniperus przewalskii (Cupressaceae) inferred from the chloroplast DNA trnT-trnF sequence variation

NWIPB OpenIR

	Phylogeography of Juniperus przewalskii (Cupressaceae) inferred from the chloroplast DNA trnT-trnF sequence variation
	Zhang, Q ; Yang, R ; Wang, Q ; Liu, JQ
	2005-11-01
发表期刊	ACTA PHYTOTAXONOMICA SINICA
卷号	43 期号:6 页码:503-512
文章类型	Article
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.
关键词	Qinghai-tibet Plateau Juniperus Przewalskii Cpdna Trnt-trnf Phylogeography Bottleneck Founder Effect
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
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研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000233687600002
引用统计	被引频次：16[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/363003/6850
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 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.