Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae

	Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae
	Chen, Ya-Ping 1,2; Drew, Bryan T.3; Li, Bo 4; Soltis, Douglas E.5,6; Soltis, Pamela S.6; Xiang, Chun-Lei1
	2016-03-08
发表期刊	TAXON
卷号	65 期号:1 页码:123-136
摘要	Ombrocharis is the only incertae sedis genus within Lamiaceae that has not been included in a published molecular phylogenetic study. Here, we adopt a two-step approach to resolve the phylogenetic placement of the genus. Initially, the subfamilial affiliation of Ombrocharis was determined based on a combined ndhF and rbcL dataset covering all seven subfamilies of Lamiaceae. Results show that Ombrocharis is a member of Nepetoideae, a placement that is also supported by its hexacolpate pollen grains. In the second set of analyses, two nrDNA (ITS, ETS) and four cpDNA (ycf1, rps15-ycf1, trnL-F, rpl32-trnL) markers were used to explore the position of Ombrocharis within Nepetoideae. Our results demonstrate that Ombrocharis and another monotypic genus, Perillula, form a clade that is sister to the remaining genera of tribe Elsholtzieae. Ombrocharis and other taxa within Elsholtzieae share divergent stamens, a weakly 2-lipped corolla, and an asymmetric disc with an elongate anterior lobe, but it is unclear whether these features are apomorphic. This study represents both the most comprehensive phylogenetic analysis of Elsholtzieae to date and the only study to include all genera of Elsholtzieae. The monophyly of Elsholtzieae (including Ombrocharis) is well supported, and there is weak support for Elsholtzieae as sister to the rest of Nepetoideae. Additionally, our results do not support the merging of Keiskea with Collinsonia, and Elsholtzia may be polyphyletic.
关键词	Elsholtzia Elsholtzieae Molecular Phylogenetics Nepetoideae Ombrocharis Perillula
收录类别	SCI
语种	英语
WOS记录号	WOS:000372796500008
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/26191
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Plant Div & Biogeog East Asia, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Nebraska, Dept Biol, Kearney, NE 68849 USA 4.Jiangxi Agr Univ, Coll Agr, Lab Subtrop Biodivers, Nanchang 330045, Jiangxi, Peoples R China 5.Univ Florida, Dept Biol, Gainesville, FL 32611 USA 6.Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA
推荐引用方式 GB/T 7714	Chen, Ya-Ping,Drew, Bryan T.,Li, Bo,et al. Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae[J]. TAXON,2016,65(1):123-136.
APA	Chen, Ya-Ping,Drew, Bryan T.,Li, Bo,Soltis, Douglas E.,Soltis, Pamela S.,&Xiang, Chun-Lei.(2016).Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae.TAXON,65(1),123-136.
MLA	Chen, Ya-Ping,et al."Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae".TAXON 65.1(2016):123-136.

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