Taxonomy and phylogeny of polypores with ganodermatoid basidiospores (Ganodermataceae)

Abstract

Polypores with complex double-walled basidiospores with a pigmented endosporium ornamented with columns or ridges and a smooth hyaline exosporium are usually classified in the Ganodermataceae. Although the family presents well-delimited morphological features, recent phylogenetic studies have raised divergent evidences about its monophyly. In order to clarify uncertainties of generic delimitation and classification of the group and test its monophyly, morphological analysis and multilocus phylogenetic analyses based on Internal Transcribed Spacer, nuclear 28S rDNA, and portions of the largest subunit of RNA polymerase II and translation elongation factor 1-alpha were carried out. The main outcomes of the study are (i) Ganodermataceae is recovered as monophyletic, (ii) Amaurodermellus is proposed to accommodate the neotropical Amauroderma ovisporum, (iii) Cristataspora is proposed to accommodate two former species of Ganoderma-G. coffeatum and G. flaviporum-with pale context and truncate basidiospores with endosporic ornamentation as ridges. Comments on other species of Ganodermataceae are also presented.Keywords Polyporales . Amauroderma . Ganoderma . Neotropics . New genera This article is part of the topical collection on Diversity and phylogeny of wood-decaying Basidiomycota.

Phylogenetic analyses and morphological characters reveal two new species of Ganoderma from Yunnan province, China

“…Ganodermataceae is a large family of polypores, and has received great attention from mycologists for over many decades. However, species identification and circumscriptions have been unclear and taxonomic segregation of the genera has been controversial because of different viewpoints among mycologists (Moncalvo et al 1995;Moncalvo and Ryvarden 1997;Costa-Rezende et al 2020). Ganodermataceae was treated as a synonym of Polyporaceae and classify the genus Ganoderma into Polyporaceae by Justo et al (2017).…”

“…Later, Cui et al (2019) excluded Ganoderma from Polyporaceae, due to Ganoderma having unique double-walled basidiospores. In addition, recent studies have clarified someuncer-tainties of generic delimitation and classification of polypores with ganodermatoid basidiospores, and proved that Ganodermataceae is a monophyletic group (Costa-Rezende et al 2020). More collections of this family are needed in order to estimate the attributes of this taxon better.…”

“…Sun, D.H. Costa & B.K. Cui and Tomophagus Murrill are accepted in Ganodermataceae and supported by morphology and phylogeny (Steyaert 1972;Furtado 1981;Corner 1983;Zhao et al 2000;Ryvarden 2004;Thametal 2012;Costa-Rezende et al 2017;Costa-Rezende et al 2020;Sun et al 2020).…”

“…Ganodermataceae was introduced by Donk (1948) which belongs to Polyporales and the latest studies indicated that it is a monophyletic group (Costa-Rezende et al 2020). Currently, eleven genera viz.…”

“…There are 462 records in the Index Fungorum (http://www.Indexfungorum.org/; accessed date: 7 October 2021) and 506 records in MycoBank (http://www.mycobank.org/; accessed date: 7 October 2021). Ganoderma is one of the most taxonomically scrutinized genera among the Ganodermataceae and even in Polyporales (Richter et al 2015;Costa-Rezende et al 2020). Most Ganoderma species are wood decomposers, found in all temperate and tropical regions (Pilotti et al 2004;Cao et al 2012;Zhou et al 2015).…”