NDA@SZTAKI

Generic concepts and taxonomic uncertainties in the family Meruliaceae (Polyporales, Basidiomycota)

Papp, Viktor

Dima, Bálint

Eszterházy Károly Egyetem Líceum Kiadó

2017

QK Botany / növénytan

The most recent phylogenetic studies demonstrated that the phlebioid clade forms
three different lineages, which are accepted as Irpicaceae, Meruliaceae and
Phanerochaetaceae in family rank. The family name Meruliaceae (=
Climacodontaceae, = Phlebiaceae) was proposed by Petter Adolf Karsten in 1881
and published validly by Carleton Rea in 1922, based on Merulius as generic type.
The family contains wood-inhabiting white-rot species, which microscopically
characterised in general by the monomitic hyphal system with clamp-connections,
the smooth, hyaline, thin-walled spores and the presence of cystidia. The annual
resupinate basidiocarp form is dominated in the family, with corticioid (e.g.
Lilaceophlebia), phlebioid (e.g. Merulius, Phlebia spp.), odontioid (e.g. Crustodontia,
Scopuloides), hidnoid (e.g. Climacodon, Hydnophlebia, Mycoacia, Mycoaciella,
Sarcodontia) or poroid (e.g. Luteoporia, Phlebiporia) trama. Furthermore, besides
the resupinate basidiocarps, the pileate form also occurs in certain poroid genera
(e.g. Aurantiopileus, Aurantiporus). Due to the results of the phylogenetic studies
on the phlebioid clade, the former generic concepts based on morphological
observations had to be revised in some cases. Based on multigene phylogenetic
analyses, it seems that certain large genera (e.g. Ceriporia, Ceriporiopsis,
Phanerochaete and Phlebia) created by morphological observations are
polyphyletic and the species classified in these genera can be found in Meruliaceae
as well as in other families within the order Polyporales. Therefore, the correct
taxonomic status of many species in the phlebioid clade is uncertain and an
extensive molecular sampling is necessary to establish sound generic concepts in
the Meruliaceae. In this presentation (i) we aimed to discuss the taxonomic
uncertainties and unsolved problems in the family Meruliaceae. Furthermore,
based on morphological and phylogenetic perspectives (ii) we aimed to investigate
the legitimacy of certain genus names, which formerly placed in the Meruliaceae:
e.g. Amaurohydnum; and in addition (iii) we reported the description of a new
polypore genus, typified on Aurantiporus alborubescens (≡ Phaeolus
alborubescens) evidenced by morphological characteristics and multigene
phylogenetic analysis.

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text

http://real.mtak.hu/71053/1/ABPA_5%281%29_from40to40.pdf

Papp, Viktor and Dima, Bálint (2017) Generic concepts and taxonomic uncertainties in the family Meruliaceae (Polyporales, Basidiomycota). Acta Biologica Plantarum Agriensis, 5 (1). p. 40. ISSN 2061-6716

http://real.mtak.hu/71053/

https://doi.org/10.21406/abpa.2017.5.1.40