A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis

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	A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis
	Wang, YJ; Pan, JT; Liu, SV; Liu, JQ
	2005-03-01
发表期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
卷号	147 期号:3 页码:349-356
文章类型	Article
摘要	A new species of Saussurea, S. erecta S. W Liu, J. T Pan A J. Q. Liu sp. nov., is described from Tibet. It resembles S. kingii but may be distinguished by having distinct stems and glabrous achenes. Saussurea kingii was placed in sect. Pseudoeriocoryne of subgen. Eriocoryne; this section was circumscribed by acaulescence and an inflorescence with congested capitula surrounded by a rosette of leaves. The discovery of S. erecta with distinct stems, cauline leaves and corymbose capitula blurred the delimitation of sect. Pseudoeriocoryne and suggested that the section may be polyphyletic. Both the close relationship and the significant difference between S. erecta and S. kingii were confirmed by analyses of nrDNA ITS sequences. The resulting phylogenies based on ITS data further suggest that Saussurea sect. Pseudoeriocoryne, as traditionally defined, does not constitute a monophyletic group. The rapid radiation and speciation of Saussurea in the Qinghai-Tibetan Plateau, as inferred from ITS phylogeny, are discussed. (c) 2005 The Linnean Society of London.; A new species of Saussurea, S. erecta S. W Liu, J. T Pan & J. Q. Liu sp. nov., is described from Tibet. It resembles S. kingii but may be distinguished by having distinct stems and glabrous achenes. Saussurea kingii was placed in sect. Pseudoeriocoryne of subgen. Eriocoryne; this section was circumscribed by acaulescence and an inflorescence with congested capitula surrounded by a rosette of leaves. The discovery of S. erecta with distinct stems, cauline leaves and corymbose capitula blurred the delimitation of sect. Pseudoeriocoryne and suggested that the section may be polyphyletic. Both the close relationship and the significant difference between S. erecta and S. kingii were confirmed by analyses of nrDNA ITS sequences. The resulting phylogenies based on ITS data further suggest that Saussurea sect. Pseudoeriocoryne, as traditionally defined, does not constitute a monophyletic group. The rapid radiation and speciation of Saussurea in the Qinghai-Tibetan Plateau, as inferred from ITS phylogeny, are discussed. (c) 2005 The Linnean Society of London.
关键词	Adaptation Convergent Evolution Radiation
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
学科领域	植物学
关键词[WOS]	CARDUEAE ASTERACEAE ; PHYLOGENY ; BIOGEOGRAPHY ; EVOLUTION ; NUCLEAR
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:000227841700007
引用统计	被引频次：13[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/363003/1377
专题	中国科学院西北高原生物研究所
作者单位	Chinese Acad Sci, Qinghai Tibetan Plateau Biol Evolut & Adaptat Lab, NW Plateau Inst Biol, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Wang, YJ,Pan, JT,Liu, SV,et al. A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2005,147(3):349-356.
APA	Wang, YJ,Pan, JT,Liu, SV,&Liu, JQ.(2005).A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,147(3),349-356.
MLA	Wang, YJ,et al."A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 147.3(2005):349-356.

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