Additions to the knowledge of hydnoid Steccherinaceae: Cabalodontia, Etheirodon, Metuloidea, and Steccherinum

A phylogenetic and taxonomic study on Steccherinum (Polyporales, Basidiomycota): Focusing on three new Steccherinum species from southern China

“…New DNA sequencing techniques have revolutionized the researches of fungal taxonomy and diversity, in which about 150 thousand species of fungi have been described (Hyde, 2022). Wood decaying fungi have been studied intensively in recent years (Bernicchia and Gorjoń, 2010;Dai, 2011;Cui et al, 2019;Guan et al, 2020;Wang and Zhao, 2021;Westphalen et al, 2021;Wu et al, 2021a;Wu et al, 2021b;Wu et al, 2021b;Qu et al, 2022;Wu et al, 2022a;Wu et al, 2022b), but the hydnoid species in the order Polyporales are still not well investigated in China, especially in the subtropics and tropics. In the present study, three new species, Steccherinum fissurutum, S. punctatum and S. subtropicum spp.…”

“…It is a cosmopolitan genus characterized by a combination of resupinate to effused-reflexed or pileate basidiome with a membranaceous consistencey, hymenophore odontioid to hydnoid, a dimitic hyphal structure with clamp connections or simple-septate generative hyphae, cystidia numerous, strongly encrusted in the obtuse apex, basidia subclavate and basidiospores hyaline, thin-walled, smooth, ellipsoid to subcylindrical, acyanophilous and negative in Melzer's reagent (Fries, 1821;Gray, 1821;Bernicchia and Gorjoń, 2010). So far, about 80 species have been accepted in this genus worldwide (Fries, 1821;Banker, 1906;Banker, 1912;Cunningham, 1958;Snell and Dick, 1958;Lindsey and Gilbertson, 1977;Ryvarden, 1978;Lindsey and Gilbertson, 1979;Burdsall and Nakasone, 1981;Melo, 1995;Legon and Roberts, 2002;Yuan and Dai, 2005a;Spirin et al, 2007;Hjortstam and Ryvarden, 2008;Bernicchia and Gorjoń, 2010;Miettinen et al, 2012;Yuan and Wu, 2012;Miettinen and Ryvarden, 2016;Westphalen et al, 2018;Liu and Dai, 2021;Westphalen et al, 2021;Wu et al, 2021a;Wu et al, 2021b;Dong et al, 2022). In recent years, several new Steccherinum species were described in China, S. fragile Z.B.…”

“…Molecular phylogenies have provided increased knowledge concerning the evolution of Steccherinum (Miettinen et al, 2012;Binder et al, 2013;Justo et al, 2017;Westphalen et al, 2018;Westphalen et al, 2021). Utilizing sequences of the gene regions ITS, nLSU, mtSSU, atp6, rpb2, and tef1, Miettinen et al (2012) revealed that the phylogeny of the poroid and hydnoid genera Antrodiella Ryvarden and I.…”

“…Using of whole genome sequence data in comparison to extensively sampled multigene datasets indicated that Steccherinum species belonged to the residual polyporoid clade and the generic type (S. ochraceum) was grouped with Junghuhnia nitida (Pers.) Ryvarden (Binder et al, 2013) Westphalen et al (2021) provided the morphological and phylogenetic analyses on hydnoid specimens of Steccherinaceae, in which four genera as Cabalodontia Piatek, Etheirodon Banker, Metuloidea G. Cunn., and Steccherinum were introduced and three new neotropical species was found.…”

Phlebiodontia rajchenbergii gen. et sp. nov. (Polyporales, Meruliaceae) from Brazilian Atlantic Forest based on morphological and molecular evidence

“…With the addition of molecular data to taxonomic and systematic studies, many new genera have been introduced or resurrected to accommodate some species from Phlebia s.l. (i.e., Allophlebia, Cabalodontia, Crustodontia, Geesterania, Hermanssonia, Lilaceophlebia, Mycoacia, Mycoaciella, Phlebiopsis, Scopuloides and Resinicium) (Floudas & Hibbett, 2015;Papp & Dima, 2017;Westphalen et al, 2018Westphalen et al, , 2021Lira et al, 2022;Liu et al, 2022;among others). Recently, Chen et al (2021) provided a wide overview of the Phlebioid clade and the Meruliaceae, and showed that Phlebia s.l.…”