Phylogeny and staminal evolution of Salvia (Lamiaceae, Nepetoideae) in East Asia
Hu, Guo-Xiong1,2; Takano, Atsuko3; Drew, Bryan T.4; Liu, En-De1; Soltis, Douglas E.5,6; Soltis, Pamela S.5; Peng, Hua1; Xiang, Chun-Lei1
2018-09-14
Source PublicationANNALS OF BOTANY
ISSN0305-7364
Volume122Issue:4Pages:649-668
Abstract

Background and Aims Salvia is the largest genus within Lamiaceae, with about 980 species currently recognized. East Asia, with approx. 100 species. is one of the three major biodiversity centres of Salvia. However, relationships within this lineage remain unclear, and the staminal lever mechanism, which may represent a key innovation within the genus. has been understudied. By using six genetic markers and nearly comprehensive taxon sampling, this study attempts to elucidate relationships and examine evolutionary trends of staminal development within the East Asia (EA) Salvia clade. Methods Ninety-one taxa of EA Salvia were sampled and 34 taxa representing all other major lineages of Salvia were included for analysis. Two nuclear [internal transcribed spacer (ITS) and external transcribed spacer (ETS)] and four chloroplast (psbA-trnH, ycf1-rps15, trnL-trnF and rbcL) DNA markers were used for phylogenetic analysis employing maximum parsimony (MP). maximum likelihood (ML) and BEAST, with the latter also used to estimate divergence times. Key Results All Salvia species native to East Asia form a Glade, and eight major subclades (A-G) were recognized. Subclade A, comprising two limestone endemics (S. sonchifolia and S. petrophila), is sister to the remainder of EA Salvia. Six distinct stamen types were observed within the EA Glade. Stamen type A, with two fully fertile posterior thecae, only occurs in S. sonchifolia and may represent the ancestral stamen type within EA Salvia. Divergence time estimates showed that the crown of EA Salvia began to diversify approx. 17.4 million years ago. Conclusions This study supports the adoption of a broadly defined Salvia and treats EA Salvia as a subgenus, Glutinaria, recognizing eight sections within this subgenus. Stamen type A is ostensibly plesiomorphic within EA Salvia, and the other five types may have been derived from it. Staminal morphology has evolved in parallel within the EA Salvia, and staminal structure alone is inadequate to delimit infrageneric categories.

KeywordSalvia Phylogeny Staminal Evolution Stamen Movement Mentheae Salvia Sonchifolia Salvia Plebeia Subg. Glutinaria Sect. Sobiso
DOI10.1093/aob/mcy104
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000446086500015
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/62552
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorPeng, Hua; Xiang, Chun-Lei
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Guizhou Univ, Coll Life Sci, Guiyang 550025, Guizhou, Peoples R China
3.Museum Nat & Human Act, 6 Chome, Sanda, Hyogo 6691546, Japan
4.Univ Nebraska Kearney, Dept Biol, Kearney, NE 68849 USA
5.Univ Florida, Dept Biol, Gainesville, FL 32611 USA
6.Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA
Recommended Citation
GB/T 7714
Hu, Guo-Xiong,Takano, Atsuko,Drew, Bryan T.,et al. Phylogeny and staminal evolution of Salvia (Lamiaceae, Nepetoideae) in East Asia[J]. ANNALS OF BOTANY,2018,122(4):649-668.
APA Hu, Guo-Xiong.,Takano, Atsuko.,Drew, Bryan T..,Liu, En-De.,Soltis, Douglas E..,...&Xiang, Chun-Lei.(2018).Phylogeny and staminal evolution of Salvia (Lamiaceae, Nepetoideae) in East Asia.ANNALS OF BOTANY,122(4),649-668.
MLA Hu, Guo-Xiong,et al."Phylogeny and staminal evolution of Salvia (Lamiaceae, Nepetoideae) in East Asia".ANNALS OF BOTANY 122.4(2018):649-668.
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