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Citation for Study 18155

Citation title: "Multi-gene phylogeny of the genus Lobaria: Evidence of species-pair and allopatric cryptic speciation in East Asia".

Study name: "Multi-gene phylogeny of the genus Lobaria: Evidence of species-pair and allopatric cryptic speciation in East Asia".

This study is part of submission 18155 (Status: Published).

Citation

Cornejo C., & Scheidegger C. 2015. Multi-gene phylogeny of the genus Lobaria: Evidence of species-pair and allopatric cryptic speciation in East Asia. American Journal of Botany, 102(12).

Authors

• Cornejo C. (submitter) +41 44 739 23 99
• Scheidegger C.

Abstract

PREMISE OF THE STUDY: Accurate species delimitation has critical implications for ecological and conservation studies. The lichen genus Lobaria is widely distributed in old-growth forests. Particularly in East Asia, this genus includes many rare and poorly known taxa that are circumscribed as morpho- or chemospecies, as well as species-pairs. METHODS: To critically examine the relationships between species identified via morphological and chemical criteria, phylogenetic species recognition (PSR) was applied to the genus Lobaria. Morphological and chemical patterns of 87 individuals were examined and three independent nuclear loci were sequenced. The East Asian L. meridionalis-group was additionally studied using split decomposition and haplotype network analysis. KEY RESULTS: The genus Lobaria and most of its species were strongly supported statistically. Split decomposition and haplotype networks suggest com- plex evolutionary histories of species within the East Asian L. meridionalis-group. CONCLUSIONS: Phylogenetic analyses confirmed the monophyly of the genus Lobaria, including L. anomala. Within Lobaria, three major clades were found. These clades associate with different photobionts and comprise 18 known species and 5 undescribed species. Several chemical compounds were found to be neither stable nor invariant characters. Some taxa of the L. meridionalis-group appear to be monophyletic but remain as allopatric cryptic species. In three clades, this study found evidence for diversification processes between isidiate and nonisidiate specimens (species-pair). These findings are dis- cussed in the context of evolutionary hypotheses for speciation processes.

Keywords

Ascomycota; East Asia; Lobaria; Lobariaceae; phylogeny; species concepts

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S18155
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref25055,
  	 author = {Carolina  Cornejo and Christoph  Scheidegger},
  	 title = {Multi-gene phylogeny of the genus Lobaria: Evidence of species-pair and allopatric cryptic speciation in East Asia},
  	 year = {2015},
  	 keywords = {Ascomycota; East Asia; Lobaria; Lobariaceae; phylogeny; species concepts},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {American Journal of Botany},
  	 volume = {102},
  	 number = {12},
  	 pages = {},
  	 abstract = {PREMISE OF THE STUDY: Accurate species delimitation has critical implications for ecological and conservation studies. The lichen genus Lobaria is widely distributed in old-growth forests. Particularly in East Asia, this genus includes many rare and poorly known taxa that are circumscribed as morpho- or chemospecies, as well as species-pairs.
  METHODS: To critically examine the relationships between species identified via morphological and chemical criteria, phylogenetic species recognition (PSR) was applied to the genus Lobaria. Morphological and chemical patterns of 87 individuals were examined and three independent nuclear loci were sequenced. The East Asian L. meridionalis-group was additionally studied using split decomposition and haplotype network analysis.
  KEY RESULTS: The genus Lobaria and most of its species were strongly supported statistically. Split decomposition and haplotype networks suggest com- plex evolutionary histories of species within the East Asian L. meridionalis-group.
  CONCLUSIONS: Phylogenetic analyses confirmed the monophyly of the genus Lobaria, including L. anomala. Within Lobaria, three major clades were found. These clades associate with different photobionts and comprise 18 known species and 5 undescribed species. Several chemical compounds were found to be neither stable nor invariant characters. Some taxa of the L. meridionalis-group appear to be monophyletic but remain as allopatric cryptic species. In three clades, this study found evidence for diversification processes between isidiate and nonisidiate specimens (species-pair). These findings are dis- cussed in the context of evolutionary hypotheses for speciation processes.
  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 25055
  AU  - Cornejo,Carolina 
  AU  - Scheidegger,Christoph 
  T1  - Multi-gene phylogeny of the genus Lobaria: Evidence of species-pair and allopatric cryptic speciation in East Asia
  PY  - 2015
  KW  - Ascomycota; East Asia; Lobaria; Lobariaceae; phylogeny; species concepts
  UR  - http://dx.doi.org/
  N2  - PREMISE OF THE STUDY: Accurate species delimitation has critical implications for ecological and conservation studies. The lichen genus Lobaria is widely distributed in old-growth forests. Particularly in East Asia, this genus includes many rare and poorly known taxa that are circumscribed as morpho- or chemospecies, as well as species-pairs.
  METHODS: To critically examine the relationships between species identified via morphological and chemical criteria, phylogenetic species recognition (PSR) was applied to the genus Lobaria. Morphological and chemical patterns of 87 individuals were examined and three independent nuclear loci were sequenced. The East Asian L. meridionalis-group was additionally studied using split decomposition and haplotype network analysis.
  KEY RESULTS: The genus Lobaria and most of its species were strongly supported statistically. Split decomposition and haplotype networks suggest com- plex evolutionary histories of species within the East Asian L. meridionalis-group.
  CONCLUSIONS: Phylogenetic analyses confirmed the monophyly of the genus Lobaria, including L. anomala. Within Lobaria, three major clades were found. These clades associate with different photobionts and comprise 18 known species and 5 undescribed species. Several chemical compounds were found to be neither stable nor invariant characters. Some taxa of the L. meridionalis-group appear to be monophyletic but remain as allopatric cryptic species. In three clades, this study found evidence for diversification processes between isidiate and nonisidiate specimens (species-pair). These findings are dis- cussed in the context of evolutionary hypotheses for speciation processes.
  
  L3  - 
  JF  - American Journal of Botany
  VL  - 102
  IS  - 12
  ER  -