Morphological and phylogenetic evidence for recognition of two new species of Hyphoderma (Basidiomycota) from southern China, with a key to all Chinese Hyphoderma

Abstract

Wood-inhabiting fungi play crucial roles as decomposers in forest ecosystems and, in this study, two new wood-inhabiting corticioid fungi, Hyphoderma puerense and H. tenuissimumspp. nov., are proposed, based on a combination of morphological features and molecular evidence. Hyphoderma puerense is characterised by effused basidiomata with smooth to floccose hymenial surface, a monomitic hyphal system with clamped generative hyphae and ellipsoid basidiospores. Hyphoderma tenuissimum is characterised by resupinate basidiomata with tuberculate to minutely-grandinioid hymenial surface, septate cystidia and cylindrical to allantoid basidiospores. Sequences of ITS and nLSU rRNA markers of the studied samples were generated and phylogenetic analyses were performed with Maximum Likelihood, maximum parsimony and Bayesian Inference methods. These analyses showed that the two new species clustered into Hyphoderma, in which H. puerense grouped with H. moniliforme and H. tenuissimum formed a singleton lineage. In addition, an identification key to Chinese Hyphoderma is provided.

Two new species of Haploporus (Polyporales, Basidiomycota) from China and Ecuador based on morphology and phylogeny

“…Like other genera of wood-decaying fungi having a rich diversity of species in tropical areas ( Wu et al., 2017 ; Cui et al., 2019 ; Wu et al., 2020 ; Dai et al., 2021 ; Guan & Zhao, 2021 ; Wang et al., 2021 ; Wu et al., 2021 ; Ma et al., 2022 ), our result shows that a high diversity of Haploporus exists in neotropical areas.…”

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“…The species of H. moniliforme is distinguished from H. tropicum by its wider basidia (20-38 × 6-7.5 µm), and larger basidiospores (8-9 × 3.5-4 µm, Yurchenko & Wu 2015); H. puerense differs in its smooth to floccose hymenial surface (6-7.5 × 3-4.5 µm, Guan et al 2021). The taxon, H. floccosum is separated from H. yunnanense by having a floccose hymenial surface, tubular cystidia and smaller basidiospores (6-9.5 × 3-4.5 µm, Guan & Zhao 2021b); H. mopanshanense another taxon differs in having the porulose to pilose hymenial surface ; H. nudicephalum differs from H. yunnanense by the septocystidial (swollen up to 14 µm, Gilbertson & Blackwell 1988); H. pinicola differs from H. yunnanense by both larger basidia (25-28 × 5-6.5 µm) and basidiospores (13-16 × 4-4.5 µm, Yurchenko & Wu 2014b); H. setigerum differs from H. yunnanense by having the tubular cystidia, and larger basidia (25-30 × 6-7 µm, Bernicchia & Gorjón 2010); H. subsetigerum differs in having larger basidia (20-30 × 4.5-5.5 µm) and smaller basidiospores (6-8 × 2.8-3.2 µm, Wu 1997b); H. tenuissimum differs by having the wider basidia (17-31 × 4.5-8 µm) bearing 4 sterigmata (Guan et al 2021). Morphologically, H. marginatum is similar to H. obtusum, H. puerense and H. roseocremeum (Bres.)…”

“…Donk (1957: 15) in having a smooth hymenium and non-septate cystidia. However, H. obtusum is distinguished from H. marginatum by its the wider basidiospores (8-9 × 5-6.5 µm, Eriksson 1958); H. puerense differs from H. marginatum by the smaller basidiospores (6-7.5 × 3-4.5 µm, Guan et al 2021); H. roseocremeumdiffers in having the larger tubular cystidia (80-100 × 6-9 µm, Donk 1957).…”

“…Hyphoderma species are extensively studied. Currently, about 110 species have been accepted worldwide (Donk 1957, Nakasone 2008, Wu et al 2010, Baltazar et al 2016, Martín et al 2018, Guan & Zhao 2021a,b, Guan et al 2021, including 31 species from China (Wu 1997a,b, Dai 2011, Yurchenko & Wu 2014a,b, Yurchenko & Wu 2015, Guan & Zhao 2021a,b, Guan et al 2021.…”

Three New Species of Absidia (Mucoromycota) from China Based on Phylogeny, Morphology and Physiology

“…Currently, an increasing number of studies focus on fungal diversity and ecological distribution [3,4,[42][43][44][45][46][47][48], which provides a foundation to deeply understand the kingdom Fungi. Although a total of 46 species are described in Absidia, their ecological distribution has still not been unraveled.…”