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Citation for Study 14772

Citation title: "Photobiont switch and cephalodia emancipation as evolutionary drivers in the lichen symbiosis?: a case study in the Pannariaceae (Peltigerales) ".

Study name: "Photobiont switch and cephalodia emancipation as evolutionary drivers in the lichen symbiosis?: a case study in the Pannariaceae (Peltigerales) ".

This study is part of submission 14772 (Status: Published).

Citation

Magain N., & S?rusiaux E. 2013. Photobiont switch and cephalodia emancipation as evolutionary drivers in the lichen symbiosis?: a case study in the Pannariaceae (Peltigerales). PLoS ONE, .

Authors

• Magain N.
• S?rusiaux E.

Abstract

Lichen symbioses in the Pannariaceae associate an ascomycete and either cyanobacteria alone (usually Nostoc?; bipartite thalli) or green algae and cyanobacteria (cyanobacteria being located in dedicated structures called cephalodia?; tripartite thalli) as photosynthetic partners (photobionts). In bipartite thalli, cyanobacteria can either be restricted to a well-delimited layer within the thallus (?pannarioid? thalli) or spread over the thallus that becomes gelatinous when wet (?collematoid? thalli). ?We studied the collematoid genera Kroswia and Physma and an undescribed tripartite species along with representatives of the pannarioid genera Fuscopannaria, Pannaria and Parmeliella. Molecular inferences and statistical analyses support the following: (a) several switches from pannarioid to collematoid thalli occured and are correlated with photobiont switches?; the collematoid genus Kroswia is nested within the pannarioid genus Fuscopannaria and the collematoid genus Physma is sister to the pannarioid Parmeliella mariana group?; (b) Nostoc associated with collematoid thalli in the Pannariaceae are related to that of the Collemataceae (which contains only collematoid thalli), and never associated with pannarioid thalli; Nostoc associated with pannarioid thalli also associate in other families with similar morphology?; (c) ancestors of several lineages in the Pannariaceae developed tripartite thalli, bipartite thalli probably resulting from cephalodia emancipation from tripartite thalli?which eventually evolved and diverged, as suggested by the same Nostoc present in the collematoid genus Physma and in the cephalodia of a closely related tripartite species; Photobiont switches and cephalodia emancipation followed by divergence are thus strongly suspected to act as evolutionary drivers in the family Pannariaceae.

Keywords

species interactions, evolution, bipartite, tripartite, Nostoc, ascomycota

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S14772
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref22424,
  	 author = {Nicolas  Magain and Emmanu?l  S?rusiaux},
  	 title = {Photobiont switch and cephalodia emancipation  as evolutionary drivers in the lichen symbiosis?:  a case study in the Pannariaceae (Peltigerales) },
  	 year = {2013},
  	 keywords = {species interactions, evolution, bipartite, tripartite, Nostoc, ascomycota},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {PLoS ONE},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Lichen symbioses in the Pannariaceae associate an ascomycete and either cyanobacteria alone (usually Nostoc?; bipartite thalli) or green algae and cyanobacteria (cyanobacteria being located in dedicated structures called cephalodia?; tripartite thalli) as photosynthetic partners (photobionts). In bipartite thalli, cyanobacteria can either be restricted to a well-delimited layer within the thallus (?pannarioid? thalli) or spread over the thallus that becomes gelatinous when wet (?collematoid? thalli). ?We studied the collematoid genera Kroswia and Physma and an undescribed tripartite species along with representatives of the pannarioid genera Fuscopannaria, Pannaria and Parmeliella. Molecular inferences and statistical analyses support the following:
  (a) several switches from pannarioid to collematoid thalli occured and are correlated with photobiont switches?; the collematoid genus Kroswia is nested within the pannarioid genus Fuscopannaria and the collematoid genus Physma is sister to the pannarioid Parmeliella mariana group?;
  (b) Nostoc associated with collematoid thalli in the Pannariaceae are related to that of the Collemataceae (which contains only collematoid thalli), and never associated with pannarioid thalli; Nostoc associated with pannarioid thalli also associate in other families with similar morphology?;
  (c) ancestors of several lineages in the Pannariaceae developed tripartite thalli, bipartite thalli probably resulting from cephalodia emancipation from tripartite thalli?which eventually evolved and diverged, as suggested by the same Nostoc present in the collematoid genus Physma and in the cephalodia of a closely related tripartite species;
  Photobiont switches and cephalodia emancipation followed by divergence are thus strongly suspected to act as evolutionary drivers in the family Pannariaceae. }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 22424
  AU  - Magain,Nicolas 
  AU  - S?rusiaux,Emmanu?l 
  T1  - Photobiont switch and cephalodia emancipation  as evolutionary drivers in the lichen symbiosis?:  a case study in the Pannariaceae (Peltigerales) 
  PY  - 2013
  KW  - species interactions
  KW  - evolution
  KW  - bipartite
  KW  - tripartite
  KW  - Nostoc
  KW  - ascomycota
  UR  - http://dx.doi.org/
  N2  - Lichen symbioses in the Pannariaceae associate an ascomycete and either cyanobacteria alone (usually Nostoc?; bipartite thalli) or green algae and cyanobacteria (cyanobacteria being located in dedicated structures called cephalodia?; tripartite thalli) as photosynthetic partners (photobionts). In bipartite thalli, cyanobacteria can either be restricted to a well-delimited layer within the thallus (?pannarioid? thalli) or spread over the thallus that becomes gelatinous when wet (?collematoid? thalli). ?We studied the collematoid genera Kroswia and Physma and an undescribed tripartite species along with representatives of the pannarioid genera Fuscopannaria, Pannaria and Parmeliella. Molecular inferences and statistical analyses support the following:
  (a) several switches from pannarioid to collematoid thalli occured and are correlated with photobiont switches?; the collematoid genus Kroswia is nested within the pannarioid genus Fuscopannaria and the collematoid genus Physma is sister to the pannarioid Parmeliella mariana group?;
  (b) Nostoc associated with collematoid thalli in the Pannariaceae are related to that of the Collemataceae (which contains only collematoid thalli), and never associated with pannarioid thalli; Nostoc associated with pannarioid thalli also associate in other families with similar morphology?;
  (c) ancestors of several lineages in the Pannariaceae developed tripartite thalli, bipartite thalli probably resulting from cephalodia emancipation from tripartite thalli?which eventually evolved and diverged, as suggested by the same Nostoc present in the collematoid genus Physma and in the cephalodia of a closely related tripartite species;
  Photobiont switches and cephalodia emancipation followed by divergence are thus strongly suspected to act as evolutionary drivers in the family Pannariaceae. 
  L3  - 
  JF  - PLoS ONE
  VL  - 
  IS  - 
  ER  -