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Citation for Study 16712

Citation title: " Unravelling Species Relationships and Diversification within the Iconic California Floristic Province Sages (Salvia subgenus Audibertia, Lamiaceae)".

Study name: " Unravelling Species Relationships and Diversification within the Iconic California Floristic Province Sages (Salvia subgenus Audibertia, Lamiaceae)".

This study is part of submission 16712 (Status: Published).

Citation

Walker J.B., Drew B.T., & Sytsma K.J. 2015. Unravelling Species Relationships and Diversification within the Iconic California Floristic Province Sages (Salvia subgenus Audibertia, Lamiaceae). Systematic Botany, .

Authors

• Walker J.B.
• Drew B.T. 608-262-4422
• Sytsma K.J. 608-262-4490

Abstract

In the California Floristic Province (CA-FP) and nearby deserts, 19 species of Salvia (Lamiaceae, Mentheae) form a small radiation but an important component of the chaparral and desert communities. Two groups within these Californian Salvia traditionally have been recognized (usually treated as sections), but relationships within each, to each other, and to other Salvia are not known. Phylogenetic relationships of all species, with multiple accessions for most, were obtained using chloroplast DNA (cpDNA) and nuclear ribosomal DNA (nrDNA) markers. Ancestral character state reconstruction of both vegetative and floral features was done on the resulting nrDNA tree. Biogeographical analysis of the groups within the CA-FP and adjacent floristic provinces was done in BioGeoBEARS and species diversification assessed with BAMM. Significant conclusions drawn from the study include: 1) California sages should be classified into two monophyletic sections, Audibertia (15 spp.) and Echinosphace, (4 spp.) in the new subgenus Audibertia; 2) subg. Audibertia and the Neotropical subg. Calosphace are sister clades, most closely related to Asian groups, and are likely Asian in origin; 3) nrDNA provides a fairly resolved tree for subg. Audibertia with all species monophyletic; 4) cpDNA and nrDNA trees are strongly incongruent and provide evidence that hybridization and chloroplast capture have played an important role in the evolution of subg. Audibertia; 5) ancestral character reconstruction of states in habit, possession of spines, calyx lobing, and staminal features highlights a complex (sometimes convergent) evolutionary history of this iconic CA-FP lineage; 6) subg. Audibertia arose in desert areas and more recently diversified into the Southwestern California Region and adjacent regions with the formation of the Mediterranean climate; and 7) this diversification exhibits a slight decrease and increase in speciation and extinction rates, respectively, over the group?s 11 million year history.

Keywords

BAMM, BioGeoBEARS, biogeography, Calosphace, chloroplast capture, Echinosphace, hybridization, staminal evolution.

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S16712
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref23919,
  	 author = {Jay B Walker and Bryan T Drew and Kenneth Jay Sytsma},
  	 title = { Unravelling Species Relationships and Diversification within the Iconic California Floristic Province Sages (Salvia subgenus Audibertia, Lamiaceae)},
  	 year = {2015},
  	 keywords = { BAMM, BioGeoBEARS, biogeography, Calosphace, chloroplast capture, Echinosphace, hybridization, staminal evolution.},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematic Botany},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {In the California Floristic Province (CA-FP) and nearby deserts, 19 species of Salvia (Lamiaceae, Mentheae) form a small radiation but an important component of the chaparral and desert communities. Two groups within these Californian Salvia traditionally have been recognized (usually treated as sections), but relationships within each, to each other, and to other Salvia are not known. Phylogenetic relationships of all species, with multiple accessions for most, were obtained using chloroplast DNA (cpDNA) and nuclear ribosomal DNA (nrDNA) markers. Ancestral character state reconstruction of both vegetative and floral features was done on the resulting nrDNA tree. Biogeographical analysis of the groups within the CA-FP and adjacent floristic provinces was done in BioGeoBEARS and species diversification assessed with BAMM. Significant conclusions drawn from the study include: 1) California sages should be classified into two monophyletic sections, Audibertia (15 spp.) and Echinosphace, (4 spp.) in the new subgenus Audibertia; 2) subg. Audibertia and the Neotropical subg. Calosphace are sister clades, most closely related to Asian groups, and are likely Asian in origin; 3) nrDNA provides a fairly resolved tree for subg. Audibertia with all species monophyletic; 4) cpDNA and nrDNA trees are strongly incongruent and provide evidence that hybridization and chloroplast capture have played an important role in the evolution of subg. Audibertia; 5) ancestral character reconstruction of states in habit, possession of spines, calyx lobing, and staminal features highlights a complex (sometimes convergent) evolutionary history of this iconic CA-FP lineage; 6) subg. Audibertia arose in desert areas and more recently diversified into the Southwestern California Region and adjacent regions with the formation of the Mediterranean climate; and 7) this diversification exhibits a slight decrease and increase in speciation and extinction rates, respectively, over the group?s 11 million year history.  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 23919
  AU  - Walker,Jay B
  AU  - Drew,Bryan T
  AU  - Sytsma,Kenneth Jay
  T1  -  Unravelling Species Relationships and Diversification within the Iconic California Floristic Province Sages (Salvia subgenus Audibertia, Lamiaceae)
  PY  - 2015
  KW  -  BAMM
  KW  - BioGeoBEARS
  KW  - biogeography
  KW  - Calosphace
  KW  - chloroplast capture
  KW  - Echinosphace
  KW  - hybridization
  KW  - staminal evolution.
  UR  - http://dx.doi.org/
  N2  - In the California Floristic Province (CA-FP) and nearby deserts, 19 species of Salvia (Lamiaceae, Mentheae) form a small radiation but an important component of the chaparral and desert communities. Two groups within these Californian Salvia traditionally have been recognized (usually treated as sections), but relationships within each, to each other, and to other Salvia are not known. Phylogenetic relationships of all species, with multiple accessions for most, were obtained using chloroplast DNA (cpDNA) and nuclear ribosomal DNA (nrDNA) markers. Ancestral character state reconstruction of both vegetative and floral features was done on the resulting nrDNA tree. Biogeographical analysis of the groups within the CA-FP and adjacent floristic provinces was done in BioGeoBEARS and species diversification assessed with BAMM. Significant conclusions drawn from the study include: 1) California sages should be classified into two monophyletic sections, Audibertia (15 spp.) and Echinosphace, (4 spp.) in the new subgenus Audibertia; 2) subg. Audibertia and the Neotropical subg. Calosphace are sister clades, most closely related to Asian groups, and are likely Asian in origin; 3) nrDNA provides a fairly resolved tree for subg. Audibertia with all species monophyletic; 4) cpDNA and nrDNA trees are strongly incongruent and provide evidence that hybridization and chloroplast capture have played an important role in the evolution of subg. Audibertia; 5) ancestral character reconstruction of states in habit, possession of spines, calyx lobing, and staminal features highlights a complex (sometimes convergent) evolutionary history of this iconic CA-FP lineage; 6) subg. Audibertia arose in desert areas and more recently diversified into the Southwestern California Region and adjacent regions with the formation of the Mediterranean climate; and 7) this diversification exhibits a slight decrease and increase in speciation and extinction rates, respectively, over the group?s 11 million year history.  
  L3  - 
  JF  - Systematic Botany
  VL  - 
  IS  - 
  ER  -