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

NWIPB OpenIR

	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
	2009-08-01
发表期刊	TAXON
ISSN	0040-0262
卷号	58 期号:3 页码:862-870
文章类型	Article
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.; 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.
关键词	Alpine Plants Biogeography Diversification Eurasia Gentiana Sect. Cruciata Phylogeny
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
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研究方向	Plant Sciences ; Evolutionary Biology
WOS类目	Plant Sciences ; Evolutionary Biology
WOS记录号	WOS:000269774900014
引用统计	被引频次：51[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/363003/1838
专题	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.