CiteULike

Delicious

Connotea

Citation for Study 19750

Citation title: "Unique phylogenetic position of the African truffle-like fungus, Octaviania ivoryana (Boletaceae, Boletales) and the proposal of a new genus, Afrocastellanoa".

Study name: "Unique phylogenetic position of the African truffle-like fungus, Octaviania ivoryana (Boletaceae, Boletales) and the proposal of a new genus, Afrocastellanoa".

This study is part of submission 19750 (Status: Published).

Citation

Orihara T., & Smith M.E. 2017. Unique phylogenetic position of the African truffle-like fungus, Octaviania ivoryana (Boletaceae, Boletales) and the proposal of a new genus, Afrocastellanoa. Mycologia, 109(2): 323-332.

Authors

• Orihara T. (submitter) +81-465-21-1515
• Smith M.E.

Abstract

The sequestrate (truffle-like) basidiomycete Octaviania ivoryana was originally described based on collections from Zimbabwe, Kenya, Guinea and Senegal. This species has basidiomes that stain blue-green and basidiospores with crowded spines that are characteristic of the genus Octaviania. However, O. ivoryana is the only Octaviania species described from sub-Saharan Africa and the phylogenetic relationship of the species to other species of Octaviania sensu stricto has not been previously investigated. We examined the phylogenetic position of the holotype and paratype specimens of O. ivoryana based on three nuclear DNA loci (ITS and 28S ribosomal DNA and TEF-1alpha). The resultant phylogenies indicate that O. ivoryana does not belong to Octaviania sensu stricto but instead forms a monophyletic clade with the epigeous bolete genus, Porphyrellus s.s. (i.e., P. porphyrosporus and allies). The ITS phylogeny also recovers a monophyletic clade that includes sequences from O. ivoryana basidiomes as well as sequences from ectomycorrhizal root tips of Uapaca, Anthonotha, and assorted ectomycorrhizal Fabaceae species, suggesting that there is likely additional undescribed diversity within the lineage. We accordingly propose a new genus, Afrocastellanoa M.E. Sm. & Orihara to accommodate the species O. ivoryana. Afrocastellanoa is morphologically distinct from Octaviania in the multi-layered peridium and the lack of distinct hymenium within the gleba. Our data suggest that the genus Afrocastellanoa is a unique sequestrate lineage with one described species and several undescribed species, all of which likely form ectomycorrhizas with African trees.

Keywords

systematics, sequestrate fungi, taxonomy, mycorrhiza

External links

• DOI: 10.1080/00275514.2017.1301750
• PMID: 28418780
• Other URL: http://www.mycologia.org/

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S19750
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref26235,
  	 author = {Takamichi  Orihara and Matthew E Smith},
  	 title = {Unique phylogenetic position of the African truffle-like fungus, Octaviania ivoryana (Boletaceae, Boletales) and the proposal of a new genus, Afrocastellanoa},
  	 year = {2017},
  	 keywords = {systematics, sequestrate fungi, taxonomy, mycorrhiza},
  	 doi = {10.1080/00275514.2017.1301750},
  	 url = {http://www.mycologia.org/},
  	 pmid = {28418780},
  	 journal = {Mycologia},
  	 volume = {109},
  	 number = {2},
  	 pages = {323--332},
  	 abstract = {The sequestrate (truffle-like) basidiomycete Octaviania ivoryana was originally described based on collections from Zimbabwe, Kenya, Guinea and Senegal. This species has basidiomes that stain blue-green and basidiospores with crowded spines that are characteristic of the genus Octaviania. However, O. ivoryana is the only Octaviania species described from sub-Saharan Africa and the phylogenetic relationship of the species to other species of Octaviania sensu stricto has not been previously investigated. We examined the phylogenetic position of the holotype and paratype specimens of O. ivoryana based on three nuclear DNA loci (ITS and 28S ribosomal DNA and TEF-1alpha). The resultant phylogenies indicate that O. ivoryana does not belong to Octaviania sensu stricto but instead forms a monophyletic clade with the epigeous bolete genus, Porphyrellus s.s. (i.e., P. porphyrosporus and allies). The ITS phylogeny also recovers a monophyletic clade that includes sequences from O. ivoryana basidiomes as well as sequences from ectomycorrhizal root tips of Uapaca, Anthonotha, and assorted ectomycorrhizal Fabaceae species, suggesting that there is likely additional undescribed diversity within the lineage. We accordingly propose a new genus, Afrocastellanoa M.E. Sm. & Orihara to accommodate the species O. ivoryana. Afrocastellanoa is morphologically distinct from Octaviania in the multi-layered peridium and the lack of distinct hymenium within the gleba. Our data suggest that the genus Afrocastellanoa is a unique sequestrate lineage with one described species and several undescribed species, all of which likely form ectomycorrhizas with African trees.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 26235
  AU  - Orihara,Takamichi 
  AU  - Smith,Matthew E
  T1  - Unique phylogenetic position of the African truffle-like fungus, Octaviania ivoryana (Boletaceae, Boletales) and the proposal of a new genus, Afrocastellanoa
  PY  - 2017
  KW  - systematics
  KW  - sequestrate fungi
  KW  - taxonomy
  KW  - mycorrhiza
  UR  - http://www.mycologia.org/
  N2  - The sequestrate (truffle-like) basidiomycete Octaviania ivoryana was originally described based on collections from Zimbabwe, Kenya, Guinea and Senegal. This species has basidiomes that stain blue-green and basidiospores with crowded spines that are characteristic of the genus Octaviania. However, O. ivoryana is the only Octaviania species described from sub-Saharan Africa and the phylogenetic relationship of the species to other species of Octaviania sensu stricto has not been previously investigated. We examined the phylogenetic position of the holotype and paratype specimens of O. ivoryana based on three nuclear DNA loci (ITS and 28S ribosomal DNA and TEF-1alpha). The resultant phylogenies indicate that O. ivoryana does not belong to Octaviania sensu stricto but instead forms a monophyletic clade with the epigeous bolete genus, Porphyrellus s.s. (i.e., P. porphyrosporus and allies). The ITS phylogeny also recovers a monophyletic clade that includes sequences from O. ivoryana basidiomes as well as sequences from ectomycorrhizal root tips of Uapaca, Anthonotha, and assorted ectomycorrhizal Fabaceae species, suggesting that there is likely additional undescribed diversity within the lineage. We accordingly propose a new genus, Afrocastellanoa M.E. Sm. & Orihara to accommodate the species O. ivoryana. Afrocastellanoa is morphologically distinct from Octaviania in the multi-layered peridium and the lack of distinct hymenium within the gleba. Our data suggest that the genus Afrocastellanoa is a unique sequestrate lineage with one described species and several undescribed species, all of which likely form ectomycorrhizas with African trees.
  L3  - 10.1080/00275514.2017.1301750
  JF  - Mycologia
  VL  - 109
  IS  - 2
  SP  - 323
  EP  - 332
  ER  -