2026/04/27 by Changlin Zhao, Qi Li, Xiangfu Liu · 1 voice
Agricultural and Biological Sciences · Medicine · #Forest Ecology and Biodiversity Studies #Fungal Biology and Applications #Mycorrhizal Fungi and Plant Interactions
paper · pdf · doi:10.3897/mycokeys.131.192179
openalex publication_date 2026/04/27 · openalex created_date 2026/04/28 · openalex updated_date 2026/07/02
Wood-inhabiting fungi represent a highly diverse group of microorganisms that play essential roles in forest ecosystems. However, the species diversity of wood-inhabiting fungal taxa in the order Russulales has not been systematically documented in the high-altitude forests of Yunnan Province, China. In the present study, the detailed morphological characteristics and combined multi-locus phylogeny of the internal transcribed spacers (ITS) and the large subunit (nrLSU) of the nuclear ribosomal DNA (rDNA) revealed two new species in Russulales , viz., Gloeopeniophorella luteola and Scytinostroma tenuissimum . Gloeopeniophorella luteola is characterized by its membranaceous, thin basidiomata with a smooth hymenial surface, a monomitic hyphal system with simple septa, generative hyphae, and gloeocystidia, and thick-walled basidiospores measuring 4–4.9 × 3.8–4.4 µm. Scytinostroma tenuissimum is characterized by its soft membranaceous basidiomata with a cream to pale pink hymenial surface, a dimitic hyphal system with clamped generative hyphae, and ellipsoid basidiospores measuring 10.1–13.2 × 7.1–9.3 µm. Phylogenetic analysis based on the concatenated ITS + nLSU dataset demonstrated that the two new species grouped within the order Russulales , in which G. luteola grouped into the family Russulaceae , while S. tenuissimum grouped into the family Peniophoraceae , and G. luteola was sister to G. bambusicola , and S. tenuissimum grouped together with S. acystidiatum and S. bambusinum . Comprehensive descriptions, micrographs, and phylogenetic analyses of the two new species are provided.