Figure - available from: Frontiers in Cellular and Infection Microbiology
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Microscopic structures of Scytinostroma macrospermum (Holotype, Dai 24606). (A) Basidiospores. (B) Basidia and basidioles. (C) Cystidia. (D) A section of basidiomata. Drawings by: Qiu-Yue Zhang.
Source publication
Two new species of Scytinostroma viz. S. acystidiatum and S. macrospermum, are described from southwest China. Phylogeny based on ITS + nLSU dataset demonstrates that samples of the two species form two independent lineages and are different in morphology from the existing species of Scytinostroma. Scytinostroma acystidiatum is characterized by res...
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A new species of Russula subgenus Russula, Russula pseudosinoparva, is described from the Yanshan Mountains in northern China based on morphology and phylogenetic analysis of the nrITS and nrLSU-rpb2-mtSSU-tef1α gene regions. Russula pseudosinoparva is characterized macroscopically by small basidiomata with a dark red to dark pink pileus; lamellae...
Citations
... & M.A. Curtis) Donk as the type species. The species in the genus have resupinate, coriaceous basidiomata, smooth to tuberculate hymenophore and a dimitic hyphal structure with simple septa or clamps on generative hyphae, skeletal hyphae densely branched and sometimes forming dendrohyphae or dichohyphae, strongly dextrinoid and cyanophilous and the presence of cystidia, basidia tubular to uniform and subglobose to ellipsoid, smooth, thin-walled, variably amyloid basidiospores and causing white rot (Donk 1956, Bernicchia and Gorjón 2010, Wang et al. 2020, Tabish and Daniel 2021, Zhang et al. 2023. The most obvious character of this genus is the tough and leathery texture of the basidiome, as well as dextrinoid and dichotomously branched skeletal hyphae (Rattan 1974, Liu et al. 2019. ...
... The most obvious character of this genus is the tough and leathery texture of the basidiome, as well as dextrinoid and dichotomously branched skeletal hyphae (Rattan 1974, Liu et al. 2019. After several rearrangements (Donk 1956, Gilbertson 1962, Boidin 1967, Rattan 1974, Boidin and Lanquetin 1977, Lanquetin 1984, Boidin and Lanquetin 1987, Boidin and Gilles 1988, Hjortstam 1990, Stalpers 1996 and recent discoveries of the genus (Nakasone 2008, Wang et al. 2020, Zhang et al. 2023, Li et al. 2023, so far, 42 species have been described or transferred to the genus worldwide (Donk 1956, Bernicchia and Gorjón 2010, Wang et al. 2020, Tabish and Daniel 2021, Zhang et al. 2023, Li et al. 2023. The latest molecular studies involving Scytinostroma, based on concatenated ITS1-5.8S-ITS2-nrLSU ...
... The most obvious character of this genus is the tough and leathery texture of the basidiome, as well as dextrinoid and dichotomously branched skeletal hyphae (Rattan 1974, Liu et al. 2019. After several rearrangements (Donk 1956, Gilbertson 1962, Boidin 1967, Rattan 1974, Boidin and Lanquetin 1977, Lanquetin 1984, Boidin and Lanquetin 1987, Boidin and Gilles 1988, Hjortstam 1990, Stalpers 1996 and recent discoveries of the genus (Nakasone 2008, Wang et al. 2020, Zhang et al. 2023, Li et al. 2023, so far, 42 species have been described or transferred to the genus worldwide (Donk 1956, Bernicchia and Gorjón 2010, Wang et al. 2020, Tabish and Daniel 2021, Zhang et al. 2023, Li et al. 2023. The latest molecular studies involving Scytinostroma, based on concatenated ITS1-5.8S-ITS2-nrLSU ...
Background
Wood-rotting fungi as an important group within the Basidiomycota are known for their ecological role in the forest ecosystem in terms of decaying living and dead trees and recycling nutrients in forest ecosystems. Many new species were revealed in the last five years. In the present study, during an ongoing study on Scytinostroma, a new species of Scytinostroma was found from China. It is described and illustrated on the basis of the morphological and phylogenetic evidence.
New information
Scytinostroma bambusinum sp. nov. is described as a new species, based on morphological and molecular evidence. It is characterised by annual, resupinate and broadly ellipsoid basidiomata with white to cream hymenophore, a dimitic hyphal structure with generative hyphae bearing simple septa, the presence of cystidioles and amyloid basidiospores measuring 5.5–7 × 4–5.3 µm. Phylogeny, based on molecular data of ITS and nLSU sequences, shows that the new species forms an independent lineage and is different in morphology from the existing species of Scytinostroma.
... In the phylogenetic tree (Fig. 1) (Boidin and Lanquetin 1987). Scytinostroma subrenisporum and S. acystidiatum can be easily distinguished from S. beijingensis by the absence of gloeocystidia (Zhang et al. 2023). Scytinostroma caudisporum is unique in the group for its distinctly large basidiospores (15-30 × 3-3.5 µm, Boidin and Lanquetin 1987). ...
... In the phylogenetic tree (Fig. 1), S. subrenisporum is closely related to S. acystidiatum and S. renisporum. Scytinostroma acystidiatum that was recently described from China, is similar to S. subrenisporum by sharing the absence of gloeocystidia but differs in having smaller basidiospores (5.2-6 × 3.5-4.5 µm, measured from the type by the authors, Zhang et al. 2023). Scytinostroma renisporum is similar to S. subrenisporum by sharing ellipsoid to reniform basidiospores but differs by having cylindrical, subclavate or fusoid gloeocystidia and a distribution in Côte d'Ivoire, western Africa (Boidin and Lanquetin 1987). ...
... Based on our phylogenetic and morphological study results, we recognized 14 species of Scytinostroma s.s.worldwide. Until now, seven species have been reported from China, all of which were newly described in the present study and other recently published papers Wang et al. 2020;Zhang et al. 2023). It seems that China, especially its temperate areas, is rich in species diversity of Scytinostroma s.s. ...
Scytinostroma is species-rich genus in Peniophoraceae, Russulales and has been shown to be polyphyletic. In this study, we performed phylogenetic analyses on the core clade of Scytinostroma based on concatenated ITS1-5.8S-ITS2-nrLSU sequence data. Fifteen lineages including four new species from China, Scytinostroma beijingensis , S. boidinii , S. subduriusculum , and S. subrenisporum , were recognized. The genus Michenera was nested within the Scytinostroma s.s. clade in the phylogenetic tree of Peniophoraceae. Sequences of S. portentosum (type species) and S. hemidichophyticum from Europe formed a strongly supported lineage sister to the S. portentosum sample from Canada. It is supposed that the European “ S. portentosum ” is S. hemidichophyticum , and the former species is restricted in distribution to North America. Scytinostroma duriusculum is supposed to be a species complex. Samples from Sri Lanka (the type locality) formed a lineage sister to those from China, Thailand and Vietnam (described herein as S. subduriusculum ) and two samples from France that might represent an undescribed species. The four new species are described and illustrated, and an identification key to all the 14 Scytinostroma s.s. species worldwide is provided. Until now, seven species of Scytinostroma s.s. have been found in China. Our results increased the knowledge of species diversity and taxonomy of corticioid fungi in China.
