Phylogeography of Hippophae neurocarpa (Elaeagnaceae) inferred from the chloroplast DNA trnL-F sequence variation

	Phylogeography of Hippophae neurocarpa (Elaeagnaceae) inferred from the chloroplast DNA trnL-F sequence variation
	Meng, Li-Hua 1,2,3; Yang, Hui-Ling 1; Wu, Gui-Li 2; Wang, Yu-Jin 1,2
刊名	journal of systematics and evolution
	2008
卷号	46 期号:1 页码:32-40
关键词	contiguous range expansion cpDNA Hippophae neurocarpa phylogeography Qinghai-Tibetan Plateau refugia sub-speciation trnL-F
英文摘要	the topological effect of the qinghai-tibetan plateau during the quaternary climatic oscillation must have important effects on spatial distribution and genetic structure of organisms distributed there. at the same time, the ecological niches provided by the uplifts of the plateau and the following quaternary climatic changes may have promoted morphological differentiation and speciation of plants occurring there. the plateau endemic hippophae neurocarpa (elaeagnaceae) is a dominant shrub species along the streams or rivers and it also occurs in the semiarid ecosystem. this species is recognized as two separate subspecies, i.e. ssp. neurocarpa and ssp. stellatopilosa, mainly according to the appendages on leaves and different habitat preferences. the former is characteristic of scale-like appendages on the leaves and distributed in the drier and colder habitats while the latter has stellate hairs with a preference of occurring in the wetter and warmer habitats. it is interesting to know whether the morphological sub-speciation of h. neurocarpa is correlated with the intra-specific chloroplast phylogeny. in addition, this species also provide a good proxy to test the hypothesis that a few cold- or dry-tolerating species survive in the high altitude region of the plateau during the quaternary glacial stages. in this study, we examined chloroplast trnl-f sequence variation from both subspecies of h. neurocarpa. the chloroplast genome was found to be maternally inherited in hippophae and the intraspecific genealogy may reflect the maternal lineage sorting between both subspecies. a total of eight haplotypes were recovered through sequencing 70 individuals from 14 populations. one was shared by both subspecies, and four and three were only found in ssp. neurocarpa and ssp. stellatopilosa respectively. these findings suggested that two subspecies did not show genealogical concordance with morphological differentiation in this fragment. the constructed nested cladogram classified eight haplotypes into three lineages: one consisted of endemic haplotypes of ssp. neurocarpa and the other two included haplotypes from both subspecies with those of ssp. neurocarpa at the tip positions. in addition, the unique haplotypes recovered in the high altitude suggested that this species might have survived in these and habitats. the contiguous range expansion was detected from these different refugia.
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]	qinghai-tibetan plateau ; molecular phylogeny ; intraspecific variation ; evolution ; morphology ; differentiation ; amplification ; biogeography ; haplotypes ; asteraceae
收录类别	SCI
语种	英语
WOS记录号	WOS:000256539000005
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/6883]
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, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 2.Lanzhou Univ, Sch Life Coll, MOE Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Meng, Li-Hua,Yang, Hui-Ling,Wu, Gui-Li,et al. Phylogeography of Hippophae neurocarpa (Elaeagnaceae) inferred from the chloroplast DNA trnL-F sequence variation[J]. journal of systematics and evolution,2008,46(1):32-40.
APA	Meng, Li-Hua,Yang, Hui-Ling,Wu, Gui-Li,&Wang, Yu-Jin.(2008).Phylogeography of Hippophae neurocarpa (Elaeagnaceae) inferred from the chloroplast DNA trnL-F sequence variation.journal of systematics and evolution,46(1),32-40.
MLA	Meng, Li-Hua,et al."Phylogeography of Hippophae neurocarpa (Elaeagnaceae) inferred from the chloroplast DNA trnL-F sequence variation".journal of systematics and evolution 46.1(2008):32-40.