Molecular systematics of Caryopteris (Lamiaceae) and its allies with reference to the molecular phylogeny of subfamily Ajugoideae
Xiang, Chun-Lei1; Zhao, Fei1,2; Cantino, Philip D.3; Drew, Bryan T.4; Li, Bo5; Liu, En-De1; Soltis, Douglas E.6; Soltis, Pamela S.7; Peng, Hua1
2018-05-01
Source PublicationTAXON
ISSN0040-0262
Volume67Issue:2Pages:376-394
AbstractAjugoideae, the third-largest subfamily of Lamiaceae with 23 genera and about 760 species, is distributed worldwide, but is primarily found in tropical regions. During the past two decades, substantial progress has been made towards discerning phylogenetic relationships and generic boundaries in Ajugoideae, but major questions still remain. This phylogenetic study was conducted using 422 DNA sequences from seven DNA regions (nrITS, ETS, and matK, rbcL, rps16, trnL-trnF, trnH-psbA) representing 50 species from 22 of 23 genera in Ajugoideae, to reconstruct the backbone phylogeny of the subfamily, with emphasis on phylogenetic relationships among Caryopteris, Schnabelia and their closest allies. Key results: (1) Ajugoideae is monophyletic and can be divided into four main clades. (2) Discretitheca and Glossocarya, which have not been included in any previous molecular analysis, are members of Ajugoideae and closely related to Karomia and Rotheca. (3) Expanded Schnabelia is monophyletic, sister to Rubiteucris, and consists of two morphologically distinct clades, recognized here as sect. Cylindricaulis and sect. Schnabelia. (4) Traditionally defined Caryopteris is confirmed to be polyphyletic, with several segregate genera. (5) Recircumscribed Caryopteris was found to be monophyletic, but intrageneric relationships were not fully resolved. Synapomorphies of Caryopteris include boat-shaped nutlets that are winged along the edge, fimbriate anterior corolla lobes, and suprareticulate pollen sculpturing. Caryopteris forrestii var. minor was elevated to species rank based on molecular and morphological evidence.
KeywordDiscretitheca Glossocarya Rubiteucris Schnabelia Teucrium
DOI10.12705/672.7
Language英语
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/61349
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Ohio Univ, Dept Environm & Plant Biol, Athens, OH 45701 USA
4.Univ Nebraska Kearney, Dept Biol, Kearney, NE 68849 USA
5.Jiangxi Agr Univ, Coll Agr, Lab Subtrop Biodivers, Nanchang 330045, Jiangxi, Peoples R China
6.Univ Florida, Dept Biol, Gainesville, FL 32611 USA
7.Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA
Recommended Citation
GB/T 7714
Xiang, Chun-Lei,Zhao, Fei,Cantino, Philip D.,et al. Molecular systematics of Caryopteris (Lamiaceae) and its allies with reference to the molecular phylogeny of subfamily Ajugoideae[J]. TAXON,2018,67(2):376-394.
APA Xiang, Chun-Lei.,Zhao, Fei.,Cantino, Philip D..,Drew, Bryan T..,Li, Bo.,...&Peng, Hua.(2018).Molecular systematics of Caryopteris (Lamiaceae) and its allies with reference to the molecular phylogeny of subfamily Ajugoideae.TAXON,67(2),376-394.
MLA Xiang, Chun-Lei,et al."Molecular systematics of Caryopteris (Lamiaceae) and its allies with reference to the molecular phylogeny of subfamily Ajugoideae".TAXON 67.2(2018):376-394.
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