Cantoromastix 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

Cantoromastix Tedersoo gen. nov.

Type species.

Cantoromastix holarctica Tedersoo .

Diagnosis.

Distinguishable from other fungi based on diagnostic nucleotide signatures in ITS 2 (positions 123–137 in type species ctagtcatctttaag; two mismatches allowed) and SSU 3 ’ end (positions 1796–1800 in S. cerevisiae and 5 bases of ITS: cattagctta; no mismatch allowed). Forms a monophyletic, least inclusive clade in Cantoromastigaceae, covering sequences EUK 1124338 , EUK 0136917 , and EUK 0017791 (Figs 1 , 19 ).

Notes.

Recognized based on eDNA sequences only. Comprises 2–3 potential species represented by sequences EUK 0136917 (forest soil in Costa Rica) and EUK 0017791 (forest soil in Guadeloupe).

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 19. Maximum Likelihood SSU- ITS - LSU phylogram indicating the position of Cantoromastix holarctica within Cantoromastigomycetes, with ultra-rapid bootstrap values indicated (for higher-level classifications mainly). Other genus-level groups are collapsed. Neocallimastigomycota spp. were used as an outgroup.