Abstract
A new wood-inhabiting fungal species, Trechispora yunnanensis sp. nov., is proposed based on morphological characteristics and molecular phylogenetic analyses. The species is characterized by resupinate basidiomata, rigid and fragile up on drying, cream to pale greyish hymenial surface; a monomitic hyphal system with generative hyphae bearing clamp connections, IKI-, CB-; ellipsoid, hyaline, thick-walled, ornamented, IKI-, CB- basidiospores measuring as 7–8.5 × 5–5.5 µm. The internal transcribed spacer (ITS) and the large subunit (LSU) regions of nuclear ribosomal RNA gene sequences of the studied samples were generated, and phylogenetic analyses were performed with maximum likelihood (ML), maximum parsimony (MP) and bayesian inference methods (BPP). The phylogenetic analyses based on molecular data of ITS+nLSU sequences showed that T. yunnanensis formed a monophyletic lineage with a strong support (100% ML, 100% MP, 1.00 BPP) and was closely related to T. byssinella and T. laevis. Both morphological characteristics and results of molecular phylogenetic analyses confirmed the placement of the new species in Trechispora.
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