Taxonomic reconsideration of Tricholoma foliicola (Agaricales, Basidiomycota) based on basidiomata morphology, living culture characteristics, and phylogenetic analyses

Naoki Endo; Shuji Ushijima; Eiji Nagasawa; Ryo Sugawara; Yudai Okuda; Kozue Sotome; Akira Nakagiri; Nitaro Maekawa

doi:10.1016/j.myc.2019.07.002

Short communication

Taxonomic reconsideration of Tricholoma foliicola (Agaricales, Basidiomycota) based on basidiomata morphology, living culture characteristics, and phylogenetic analyses

Naoki Endo , Shuji Ushijima, Eiji Nagasawa, Ryo Sugawara, Yudai Okuda, Kozue Sotome, Akira Nakagiri, Nitaro Maekawa

Author information

Naoki Endo Corresponding author
Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University
Shuji Ushijima
The Tottori Mycological Institute
Eiji Nagasawa
The Tottori Mycological Institute
Ryo Sugawara
Department of Agricultural Science, Graduate School of Sustainability Science, Tottori University
Yudai Okuda
Faculty of Agriculture, Tottori University
Kozue Sotome
Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University
Akira Nakagiri
Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University
Nitaro Maekawa
Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University

Keywords: Arthroconidia, Lyophyllaceae, rDNA phylogeny, Saprotrophic fungi

JOURNAL OPEN ACCESS

2019 Volume 60 Issue 6 Pages 323-330

DOI https://doi.org/10.1016/j.myc.2019.07.002

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Abstract

Tricholoma foliicola was taxonomically reevaluated based on analyses of the holotype and newly collected materials. Basidiospores of T. foliicola were irregularly ellipsoid, showing a cyanophilic reaction with or without tubercles. Phylogenetic analyses of the internal transcribed spacer (ITS) and large subunit 28S regions of the fungal nuclear ribosomal RNA gene demonstrated that T. foliicola is a species of Gerhardtia characterized by irregularly shaped basidiospores. Thus, we transferred this species to Gerhardtia foliicola comb. nov. Cultured mycelia of G. foliicola on malt extract agar medium produced cystidia covered with granules and abundant thallic conidia (arthroconidia), with both schizolytic and rhexolytic secession.

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