Gelotisporidium Tedersoo, 2025

Tedersoo, Leho, Hosseyni Moghadam, Mahdieh S., Panksep, Kristel, Prins, Victoria, Anslan, Sten, Mikryukov, Vladimir, Bahram, Mohammad, Abarenkov, Kessy, Kõljalg, Urmas, Esmaeilzadeh-Salestani, Keyvan, Pawłowska, Julia, Wurzbacher, Christian, Ding, Yi, Alkahtani, Saad Hussin & Nilsson, R. Henrik, 2025, Thirty novel fungal lineages: formal description based on environmental samples and DNA, MycoKeys 124, pp. 1-121 : 1-121

Gelotisporidium Tedersoo gen. nov.

Type species.

Gelotisporidium boreale Tedersoo .

Diagnosis.

Distinguishable from other fungi based on diagnostic nucleotide signatures in SSU V 9 (positions 1699–1718 in S. cerevisiae acccgtctttcgttg; one mismatch allowed) and 5.8 S-ITS 2 (positions starting from 151 in type species and 153 in S. cerevisiae agaattgaaa; one mismatch allowed). Forms a monophyletic, least inclusive clade in Gelotisporidiaceae, covering sequences EUK 1201985 and EUK 1101158 (Figs 1 , 43 ).

Notes.

Recognized based on eDNA sequences only. Comprises Gelotisporidium boreale (sp. nov.).

Figures

Figure 1. Maximum Likelihood SSU- 5.8 S-LSU phylogram indicating placement of novel lineages in the fungal kingdom as highlighted in a coloured shade and red font. Previously described taxonomic clades are collapsed. All branches of Sumavosporidiomycetes and Gelotisporidiomycetes are shortened two-fold. Poorly supported branches with bootstrap values below 95 % / 99 % are indicated in blue. The original tree with bootstrap values and uncollapsed branches is indicated in Suppl. material 1.

Figure 43. Maximum Likelihood SSU- ITS - LSU phylogram indicating the position of Gelotisporidium boreale within Gelotisporidiomycetes, with ultra-rapid bootstrap values indicated (for higher-level classifications only). Other genus-level groups are collapsed. Rozellomycota spp. were used as an outgroup.