Molecular phylogeny and biogeography of Gentiana sect. Cruciata (Gentianaceae) based on four chloroplast DNA datasets

	Molecular phylogeny and biogeography of Gentiana sect. Cruciata (Gentianaceae) based on four chloroplast DNA datasets
	Zhang, Xiao-Lan 2,4; Wang, Yu-Jin 1; Ge, Xue-Jun 2; Yuan, Yong-Ming 2; Yang, Hui-Ling 3; Liu, Jian-Quan 1,3
刊名	taxon
	2009-08-01
卷号	58 期号:3 页码:862-870
关键词	alpine plants biogeography diversification Eurasia Gentiana sect. Cruciata phylogeny
ISSN号	0040-0262
中文摘要	gentiana sect. cruciata is mainly found on alpine mountains across eurasia, with the greatest species diversity occurring on the qinghai-tibetan plateau (qtp). in this study, we determined the phylogenetic relationships between species within the cruciata section to further elucidate the biogeographical processes governing these relationships. phylogenetic reconstructions, based on both parsimony and bayesian methods, were applied to data from four cpdna fragments (>3,000 bp) that were obtained for 39 accessions belonging to cruciata and related sections or outgroups. our results suggested that all the species sampled within this section comprise a monophyletic group, but rejected all previous hypotheses regarding intra-sectional classifications based on gross morphology. five clades were identified. the basal clade comprised three species that were endemic to the qtp. the clade that diverged second comprised three central asian species. the european clade, containing only g. cruciata, was grouped with the remaining two clades containing species from the qtp and central asia. the biogeographic analyses and divergence estimates suggested that this section diversified initially on the qtp within four million years. given the low genetic differentiation, most species/clades may be the result of more recent differentiation. these results together confirmed the long-standing hypothesis that alpine plants in central asia and europe originated from the qtp and/or west china and diversified extensively after the pliocene when global temperatures decreased.
英文摘要	gentiana sect. cruciata is mainly found on alpine mountains across eurasia, with the greatest species diversity occurring on the qinghai-tibetan plateau (qtp). in this study, we determined the phylogenetic relationships between species within the cruciata section to further elucidate the biogeographical processes governing these relationships. phylogenetic reconstructions, based on both parsimony and bayesian methods, were applied to data from four cpdna fragments (>3,000 bp) that were obtained for 39 accessions belonging to cruciata and related sections or outgroups. our results suggested that all the species sampled within this section comprise a monophyletic group, but rejected all previous hypotheses regarding intra-sectional classifications based on gross morphology. five clades were identified. the basal clade comprised three species that were endemic to the qtp. the clade that diverged second comprised three central asian species. the european clade, containing only g. cruciata, was grouped with the remaining two clades containing species from the qtp and central asia. the biogeographic analyses and divergence estimates suggested that this section diversified initially on the qtp within four million years. given the low genetic differentiation, most species/clades may be the result of more recent differentiation. these results together confirmed the long-standing hypothesis that alpine plants in central asia and europe originated from the qtp and/or west china and diversified extensively after the pliocene when global temperatures decreased.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	plant sciences ; evolutionary biology
研究领域[WOS]	plant sciences ; evolutionary biology
关键词[WOS]	quaternary diversification ; intergenic regions ; universal primers ; ribosomal dna ; alpine plants ; f sequences ; genus ; asteraceae ; evolution ; amplification
收录类别	SCI
语种	英语
WOS记录号	WOS:000269774900014
公开日期	2011-12-13
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn//handle/363003/1838]
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.Lanzhou Univ, Sch Life Sci, Lab Arid & Grassland Ecol, Inst Mol Ecol, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, S China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China 3.Chinese Acad Sci, NW Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China 4.Guangdong Acad Agr Sci, Crops Res Inst, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiao-Lan,Wang, Yu-Jin,Ge, Xue-Jun,et al. Molecular phylogeny and biogeography of Gentiana sect. Cruciata (Gentianaceae) based on four chloroplast DNA datasets[J]. taxon,2009,58(3):862-870.
APA	Zhang, Xiao-Lan,Wang, Yu-Jin,Ge, Xue-Jun,Yuan, Yong-Ming,Yang, Hui-Ling,&Liu, Jian-Quan.(2009).Molecular phylogeny and biogeography of Gentiana sect. Cruciata (Gentianaceae) based on four chloroplast DNA datasets.taxon,58(3),862-870.
MLA	Zhang, Xiao-Lan,et al."Molecular phylogeny and biogeography of Gentiana sect. Cruciata (Gentianaceae) based on four chloroplast DNA datasets".taxon 58.3(2009):862-870.