Abstract Detail

Mycological Section

Justo, Alfredo [1], Floudas, Dimitrios [2], Ortiz-Santana, Beatriz [3], Miettinen, Otto [4], Hibbett, David [5].

A revised family-level classification of the Polyporales (Basidiomycota).

The phylogeny of the order Polyporales was studied with molecular data, generated over the past five years for the project PolyPEET (http://wordpress.clarku.edu/polypeet/). A total of 279 taxa, representing the major lineages of Polyporales, were sampled for rpb1, and ribosomal loci (nrLSU, nrITS). The four major lineages previously recognized in the order (antrodia, core polyporoid, phlebioid and residual polyporoid clades) were recovered in the analyses, although the antrodia clade without support. For the first time the residual polyporoid clade receives significant support in the analyses. Several smaller lineages that do not fall within these four major clades were also recovered. Based on these results we propose a translation of the phylogeny into a formal family-level classification with the following names being accepted: (i) the core polyporoid clade is recognized as Polyporaceae; (ii) the phlebioid clade is subdivided into Phanerochaetaceae, Irpicaceae and Meruliaceae; (iii) Some well-supported clades within the residual polyporoid clade have family names available for them (Steccherinaceae, Hyphodermataceae), while others lack a family name (Panus/Cerrena clade) and the application and limits of the Podoscyphaceae and Meripilaceae are unclear based on current data; (iv) in the antrodia clade the family Fomitopsidaceae includes members of Antrodia s. lato, Fomitopsis s. lato, Daedalea and Piptoporus, while the family-level organization for the rest of the clade remains very problematic. Outside these four major clades the family names Grifolaceae and Ischnodermataceae would accommodate their respective type genera, that appear in isolated positions among the Polyporales, and the name Incrustoporiaceae would accommodate members of the genera Tyromyces and Skeletocutis. Several small lineages (Gelatoporia, Candelabrochaete africana) do not have family names available for them. Additional issues related to nomenclature, generic-level taxonomy, morphological delimitation of taxa and character evolution in the Polyporales will be also discussed, in view of the phylogenetic results.

1 - Instituto de Biologia. Universidad Nacional Autonoma de Mexico, Departamento de Botanica, Circuito Exterior s/n, Ciudad Universitaria, Mexico City, Distrito Federal, 04510, Mexico
2 - Lund University, MEMEG, MEMEG, Ecology Building, Lund University, , Lund, SE-223 62, Sweden
3 - US Forest Service, Northern Research Station, Center for Forest Mycolo, One Gifford Pinchot Drive, Madison, WI, 53726, USA
4 - Botanical Museum, University of Helsinki, PO Box 7, Helsinki, 00014, Finland
5 - Clark University, Biology, 950 Main St., Worcester, MA, 01610, USA

Keywords:
Polyporales
Phylogeny
systematics
Family-level taxonomy.

Presentation Type: Oral Paper:Papers for Sections
Session: 56
Location: Salon 1/The Shaw Conference Centre
Date: Wednesday, July 29th, 2015
Time: 8:15 AM
Number: 56002
Abstract ID:365
Candidate for Awards:None