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Phylogenetic classification of Trametes (Basidiomycota, Polyporales) based on a five–marker dataset
Author(s) -
Justo Alfredo,
Hibbett David S.
Publication year - 2011
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.1002/tax.606003
Subject(s) - clade , biology , taxonomy (biology) , phylogenetic tree , botany , evolutionary biology , gene , genetics
The phylogeny of Trametes and related genera was studied using molecular data from ribosomal markers (nLSU, ITS) and protein–coding genes (RPB1, RPB2, TEF1–alpha) and consequences for the taxonomy and nomenclature of this group were considered. Separate datasets with rDNA data only, single datasets for each of the protein–coding genes, and a combined five–marker dataset were analyzed. Molecular analyses recover a strongly supported trametoid clade that includes most of Trametes species (including the type T. suaveolens , the T. versicolor group, and mainly tropical species such as T. maxima and T. cubensis ) together with species of Lenzites and Pycnoporus and Coriolopsis polyzona . Our data confirm the positions of Trametes cervina (= Trametopsis cervina ) in the phlebioid clade and of Trametes trogii (= Coriolopsis trogii ) outside the trametoid clade, closely related to Coriolopsis gallica . The genus Coriolopsis , as currently defined, is polyphyletic, with the type species as part of the trametoid clade and at least two additional lineages occurring in the core polyporoid clade. In view of these results the use of a single generic name ( Trametes ) for the trametoid clade is considered to be the best taxonomic and nomenclatural option as the morphological concept of Trametes would remain almost unchanged, few new nomenclatural combinations would be necessary, and the classification of additional species (i.e., not yet described and/or sampled for molecular data) in Trametes based on morphological characters alone will still be possible. Alternative scenarios to divide the trametoid clade in five or ten genera were considered but if any of these options were to be adopted morphological distinction of the segregated genera and the ascription of additional species to any of these genera would be very difficult and in some cases impossible. The genera Artolenzites, Coriolopsis (as currently typified), Coriolus, Cubamyces, Cyclomycetella, Lenzites, Poronidulus, Pseudotrametes and Pycnoporus are considered synonyms of Trametes .