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Citation for Study 12868

Citation title: "Multiple origins of sequestrate basidiomes within Entoloma inferred from molecular phylogenetic analyses".

Study name: "Multiple origins of sequestrate basidiomes within Entoloma inferred from molecular phylogenetic analyses".

This study is part of submission 12868 (Status: Published).

Citation

Kinoshita A., Sasaki H., & Nara K. 2012. Multiple origins of sequestrate basidiomes within Entoloma inferred from molecular phylogenetic analyses. Fungal Biology, 116(12): 1250-1262.

Authors

• Kinoshita A. (submitter)
• Sasaki H.
• Nara K.

Abstract

The genus Entoloma comprises diverse trophic modes and basidiome morphologies. Although Entoloma includes some sequestrate species, their origins are not clearly understood in relation to phylogenetic position and trophic status. In this study, we collected 34 sequestrate Entoloma specimens in Japan over a 9-year period. Their identities and phylogenetic positions were determined by molecular analyses using three nuclear loci [internal transcribed spacer (ITS) and large subunit (LSU) regions of rDNA and RNA polymerase II large subunit (rpb2) gene]. Based on species delimitation of 97% sequence matches in the ITS region, which is a suitable region for species-level identification of higher fungi, we identified four sequestrate Entoloma species. Molecular phylogenetic analyses that included all related sequences in the international nucleotide sequence database revealed that the four sequestrate Entoloma species belonged to two major phylogroups. One of the phylogroups was Inocephalus?Cyanula, which is composed only of saprotrophic species. Three of the Japanese sequestrate species, as well as three previously known sequestrate species from other regions, fell into at least two independent clades in this phylogroup, indicating multiple origins of sequestrate forms within this saprotrophic lineage. Another phylogroup, Rhodopoloid, was also shown to include a sequestrate species for the first time. Because the Rhodopolioid phylogroup is composed exclusively of mycorrhizal species (ectomycorrhizal and tuberculate mycorrhizal species), the sequestrate form may also have evolved from a mycorrhizal ancestor. Our results suggest that sequestrate basidiomes have evolved multiple times, irrespective of their trophic status in Entoloma. Finally, based on molecular and morphological characteristics, here we describe two new sequestrate Entoloma species, i.e. E. prismaticum Sasaki, Kinoshita et Nara, sp. nov. and E. hypogaeum Sasaki, Kinoshita et Nara, sp. nov.

Keywords

Asia, convergent evolution, ectomycorrhizal fungi, false truffles, hypogeous, saprotrophic fungi

External links

• Other URL: http://www.sciencedirect.com/science/article/pii/S1878614612001699

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S12868
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref20834,
  	 author = {Akihiko  Kinoshita and Hiromi  Sasaki and Kazuhide  Nara},
  	 title = {Multiple origins of sequestrate basidiomes within Entoloma inferred from molecular phylogenetic analyses},
  	 year = {2012},
  	 keywords = {Asia, convergent evolution, ectomycorrhizal fungi, false truffles, hypogeous, saprotrophic fungi },
  	 doi = {},
  	 url = {http://www.sciencedirect.com/science/article/pii/S1878614612001699},
  	 pmid = {},
  	 journal = {Fungal Biology},
  	 volume = {116},
  	 number = {12},
  	 pages = {1250--1262},
  	 abstract = {The genus Entoloma comprises diverse trophic modes and basidiome morphologies. Although Entoloma includes some sequestrate species, their origins are not clearly understood in relation to phylogenetic position and trophic status. In this study, we collected 34 sequestrate Entoloma specimens in Japan over a 9-year period. Their identities and phylogenetic positions were determined by molecular analyses using three nuclear loci [internal transcribed spacer (ITS) and large subunit (LSU) regions of rDNA and RNA polymerase II large subunit (rpb2) gene]. Based on species delimitation of 97% sequence matches in the ITS region, which is a suitable region for species-level identification of higher fungi, we identified four sequestrate Entoloma species. Molecular phylogenetic analyses that included all related sequences in the international nucleotide sequence database revealed that the four sequestrate Entoloma species belonged to two major phylogroups. One of the phylogroups was Inocephalus?Cyanula, which is composed only of saprotrophic species. Three of the Japanese sequestrate species, as well as three previously known sequestrate species from other regions, fell into at least two independent clades in this phylogroup, indicating multiple origins of sequestrate forms within this saprotrophic lineage. Another phylogroup, Rhodopoloid, was also shown to include a sequestrate species for the first time. Because the Rhodopolioid phylogroup is composed exclusively of mycorrhizal species (ectomycorrhizal and tuberculate mycorrhizal species), the sequestrate form may also have evolved from a mycorrhizal ancestor. Our results suggest that sequestrate basidiomes have evolved multiple times, irrespective of their trophic status in Entoloma. Finally, based on molecular and morphological characteristics, here we describe two new sequestrate Entoloma species, i.e. E. prismaticum Sasaki, Kinoshita et Nara, sp. nov. and E. hypogaeum Sasaki, Kinoshita et Nara, sp. nov.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 20834
  AU  - Kinoshita,Akihiko 
  AU  - Sasaki,Hiromi 
  AU  - Nara,Kazuhide 
  T1  - Multiple origins of sequestrate basidiomes within Entoloma inferred from molecular phylogenetic analyses
  PY  - 2012
  KW  - Asia
  KW  - convergent evolution
  KW  - ectomycorrhizal fungi
  KW  - false truffles
  KW  - hypogeous
  KW  - saprotrophic fungi 
  UR  - http://www.sciencedirect.com/science/article/pii/S1878614612001699
  N2  - The genus Entoloma comprises diverse trophic modes and basidiome morphologies. Although Entoloma includes some sequestrate species, their origins are not clearly understood in relation to phylogenetic position and trophic status. In this study, we collected 34 sequestrate Entoloma specimens in Japan over a 9-year period. Their identities and phylogenetic positions were determined by molecular analyses using three nuclear loci [internal transcribed spacer (ITS) and large subunit (LSU) regions of rDNA and RNA polymerase II large subunit (rpb2) gene]. Based on species delimitation of 97% sequence matches in the ITS region, which is a suitable region for species-level identification of higher fungi, we identified four sequestrate Entoloma species. Molecular phylogenetic analyses that included all related sequences in the international nucleotide sequence database revealed that the four sequestrate Entoloma species belonged to two major phylogroups. One of the phylogroups was Inocephalus?Cyanula, which is composed only of saprotrophic species. Three of the Japanese sequestrate species, as well as three previously known sequestrate species from other regions, fell into at least two independent clades in this phylogroup, indicating multiple origins of sequestrate forms within this saprotrophic lineage. Another phylogroup, Rhodopoloid, was also shown to include a sequestrate species for the first time. Because the Rhodopolioid phylogroup is composed exclusively of mycorrhizal species (ectomycorrhizal and tuberculate mycorrhizal species), the sequestrate form may also have evolved from a mycorrhizal ancestor. Our results suggest that sequestrate basidiomes have evolved multiple times, irrespective of their trophic status in Entoloma. Finally, based on molecular and morphological characteristics, here we describe two new sequestrate Entoloma species, i.e. E. prismaticum Sasaki, Kinoshita et Nara, sp. nov. and E. hypogaeum Sasaki, Kinoshita et Nara, sp. nov.
  L3  - 
  JF  - Fungal Biology
  VL  - 116
  IS  - 12
  SP  - 1250
  EP  - 1262
  ER  -