Journal
FORESTS
Volume 12, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/f12111531
Keywords
ectomycorrhizal fungi; phylogeny; resupinate thelephoroid fungi; taxonomy; temperate mixed forest
Categories
Funding
- National Natural Science Foundation of China [31970017, 31770028, 31470148]
- Special Funds for the Young Scholars of Taxonomy of the Chinese Academy of Sciences [ZSBR-015]
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This study identified three new fungal species in the genus Tomentella from Northwest China, based on molecular and morphological characteristics. These new species share similar features such as arachnoid basidiocarps and byssoid sterile margins, which can be used for species delimitation.
Species in the genus Tomentella are distributed throughout the temperate and tropical regions worldwide, but few studies associated with the taxonomy and phylogeny of this genus had been reported from Northwest China. In this paper, molecular phylogenetic analyses of the nuclear ribosomal ITS (internal transcribed spacer: ITS1-5.8S-ITS2) and LSU (large subunit: 28S) sequences combined with morphological characteristics identified three new species from Xinjiang Autonomous Region in Northwest China, which were named T. aurantispora, T. kanasensis, and T. schrenkiana. Similar macromorphological and anatomical characteristics are shared by these new species: arachnoid basidiocarps; byssoid sterile margins; utriform basidia with a clamp connection at the base; the absence of rhizomorphs and cystidia; and slightly thick-walled, subglobose to globose basidiospores. Among these new species, the color of the hymenophoral surface, the size of the basidiospores, and some other features can be used for species delimitation. The new species and closely related species in the phylogenetic tree were discussed, and a key to the identified species of Tomentella from China was provided.
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