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

Qian-Xin Guan; Yi-Fei Li; Chang-Lin Zhao

doi:10.3897/mycokeys.83.69909

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

MycoKeys. 2021 Sep 20:83:145-160. doi: 10.3897/mycokeys.83.69909. eCollection 2021.

Authors

Qian-Xin Guan^{1

2}, Yi-Fei Li², Chang-Lin Zhao^{1

3

2}

Affiliations

¹ Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, China Southwest Forestry University Kunming China.
² College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, China Southwest Forestry University Kunming China.
³ Yunnan Academy of Biodiversity, Southwest Forestry University, Kunming 650224, China Southwest Forestry University Kunming China.

Abstract

Wood-inhabiting fungi play crucial roles as decomposers in forest ecosystems and, in this study, two new wood-inhabiting corticioid fungi, Hyphodermapuerense and H.tenuissimum spp. nov., are proposed, based on a combination of morphological features and molecular evidence. Hyphodermapuerense is characterised by effused basidiomata with smooth to floccose hymenial surface, a monomitic hyphal system with clamped generative hyphae and ellipsoid basidiospores. Hyphodermatenuissimum 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.

Keywords: Hyphodermataceae; Corticioid fungi; Yunnan Province; diversity; molecular phylogeny; taxonomy.

Qian-Xin Guan, Yi-Fei Li, Chang-Lin Zhao.

Grants and funding

Yunnan Fundamental Research Project (Grant No. 202001AS070043) and Science Research Foundation of Yunnan Provincial Department of Education Project (Project No. 2021Y275)