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Citation for Study 10591

Citation title: "Newly resolved relationships in an early land plant lineage: Bryophyta class Sphagnopsida (peat mosses)".

Study name: "Newly resolved relationships in an early land plant lineage: Bryophyta class Sphagnopsida (peat mosses)".

This study is part of submission 10581 (Status: Published).

Citation

Shaw A., Cox C.J., Buck W., Devos N., Buchanan A., Cave L., Seppelt R., Shaw B., Larra?n J., Andrus R., Greilhuber J., & Temsch E. 2010. Newly resolved relationships in an early land plant lineage: Bryophyta class Sphagnopsida (peat mosses). American Journal of Botany, 97(9): 1511-1531.

Authors

• Shaw A.
• Cox C.J. (submitter) +351 933310607
• Buck W.
• Devos N.
• Buchanan A.
• Cave L.
• Seppelt R.
• Shaw B.
• Larra?n J.
• Andrus R.
• Greilhuber J.
• Temsch E.

Abstract

Premise of the study: The Sphagnopsida, an early-diverging lineage of mosses (phylum Bryophyta), are morphologically and ecologically unique and have profound impacts on global climate. The Sphagnopsida are currently classified in two genera, Sphagnum (peat mosses) with some 350?500 species and Ambuchanania with one species. An analysis of phylogenetic relationships among species and genera in the Sphagnopsida were conducted to resolve major lineages and relationships among species within the Sphagnopsida. Methods: Phylogenetic analyses of nucleotide sequences from the nuclear, plastid, and mitochondrial genomes (11 704 nucleotides total) were conducted and analyzed using maximum likelihood and Bayesian inference employing seven different substitution models of varying complexity. Key results: Phylogenetic analyses resolved three lineages within the Sphagnopsida: (1) Sphagnum sericeum, (2) S. inretortum plus Ambuchanania leucobryoides, and (3) all remaining species of Sphagnum. Sister group relationships among these three clades could not be resolved, but the phylogenetic results indicate that the highly divergent morphology of A. leucobryoides is derived within the Sphagnopsida rather than plesiomorphic. A new classification is proposed for class Sphagnopsida, with one order (Sphagnales), three families, and four genera. Conclusions: The Sphagnopsida are an old lineage within the phylum Bryophyta, but the extant species of Sphagnum represent a relatively recent radiation. It is likely that additional species critical to understanding the evolution of peat mosses await discovery, especially in the southern hemisphere.

Keywords

Ambuchanania; bryophyte phylogeny; land plant phylogeny; peat mosses; Sphagnopsida; Sphagnum

External links

• DOI: 10.3732/ajb.1000055
• PMID: 21616905

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S10591
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref19011,
  	 author = {A. Jonathan  Shaw and Cymon John Cox and William R.  Buck and Nicolas  Devos and Alex   Buchanan  and Lynette  Cave and Rod  Seppelt and Blanka  Shaw and Juan  Larra?n  and Richard  Andrus and Johann   Greilhuber and Eva  Temsch},
  	 title = {Newly resolved relationships in an early land plant lineage: Bryophyta class Sphagnopsida (peat mosses)},
  	 year = {2010},
  	 keywords = { Ambuchanania; bryophyte phylogeny; land plant phylogeny; peat mosses; Sphagnopsida; Sphagnum},
  	 doi = {10.3732/ajb.1000055},
  	 url = {http://},
  	 pmid = {21616905},
  	 journal = {American Journal of Botany},
  	 volume = {97},
  	 number = {9},
  	 pages = {1511--1531},
  	 abstract = {Premise of the study: The Sphagnopsida, an early-diverging lineage of mosses (phylum Bryophyta), are morphologically and ecologically unique and have profound impacts on global climate. The Sphagnopsida are currently classified in two genera, Sphagnum (peat mosses) with some 350?500 species and Ambuchanania with one species. An analysis of phylogenetic relationships among species and genera in the Sphagnopsida were conducted to resolve major lineages and relationships among species within the Sphagnopsida.  Methods: Phylogenetic analyses of nucleotide sequences from the nuclear, plastid, and mitochondrial genomes (11 704 nucleotides total) were conducted and analyzed using maximum likelihood and Bayesian inference employing seven different substitution models of varying complexity.  Key results: Phylogenetic analyses resolved three lineages within the Sphagnopsida: (1) Sphagnum sericeum, (2) S. inretortum plus Ambuchanania leucobryoides, and (3) all remaining species of Sphagnum. Sister group relationships among these three clades could not be resolved, but the phylogenetic results indicate that the highly divergent morphology of A. leucobryoides is derived within the Sphagnopsida rather than plesiomorphic. A new classification is proposed for class Sphagnopsida, with one order (Sphagnales), three families, and four genera.  Conclusions: The Sphagnopsida are an old lineage within the phylum Bryophyta, but the extant species of Sphagnum represent a relatively recent radiation. It is likely that additional species critical to understanding the evolution of peat mosses await discovery, especially in the southern hemisphere.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 19011
  AU  - Shaw,A. Jonathan 
  AU  - Cox,Cymon John
  AU  - Buck,William R. 
  AU  - Devos,Nicolas 
  AU  -  Buchanan ,Alex 
  AU  - Cave,Lynette 
  AU  - Seppelt,Rod 
  AU  - Shaw,Blanka 
  AU  - Larra?n ,Juan 
  AU  - Andrus,Richard 
  AU  -  Greilhuber,Johann 
  AU  - Temsch,Eva 
  T1  - Newly resolved relationships in an early land plant lineage: Bryophyta class Sphagnopsida (peat mosses)
  PY  - 2010
  KW  -  Ambuchanania; bryophyte phylogeny; land plant phylogeny; peat mosses; Sphagnopsida; Sphagnum
  UR  - http://dx.doi.org/10.3732/ajb.1000055
  N2  - Premise of the study: The Sphagnopsida, an early-diverging lineage of mosses (phylum Bryophyta), are morphologically and ecologically unique and have profound impacts on global climate. The Sphagnopsida are currently classified in two genera, Sphagnum (peat mosses) with some 350?500 species and Ambuchanania with one species. An analysis of phylogenetic relationships among species and genera in the Sphagnopsida were conducted to resolve major lineages and relationships among species within the Sphagnopsida.  Methods: Phylogenetic analyses of nucleotide sequences from the nuclear, plastid, and mitochondrial genomes (11 704 nucleotides total) were conducted and analyzed using maximum likelihood and Bayesian inference employing seven different substitution models of varying complexity.  Key results: Phylogenetic analyses resolved three lineages within the Sphagnopsida: (1) Sphagnum sericeum, (2) S. inretortum plus Ambuchanania leucobryoides, and (3) all remaining species of Sphagnum. Sister group relationships among these three clades could not be resolved, but the phylogenetic results indicate that the highly divergent morphology of A. leucobryoides is derived within the Sphagnopsida rather than plesiomorphic. A new classification is proposed for class Sphagnopsida, with one order (Sphagnales), three families, and four genera.  Conclusions: The Sphagnopsida are an old lineage within the phylum Bryophyta, but the extant species of Sphagnum represent a relatively recent radiation. It is likely that additional species critical to understanding the evolution of peat mosses await discovery, especially in the southern hemisphere.
  L3  - 10.3732/ajb.1000055
  JF  - American Journal of Botany
  VL  - 97
  IS  - 9
  SP  - 1511
  EP  - 1531
  ER  -