Aquamastigales Tedersoo & Esmaeilzadeh-Salestani, 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

Aquamastigales Tedersoo & Esmaeilzadeh-Salestani ord. nov.

Type family.

Aquamastigaceae Tedersoo & Esmaeilzadeh-Salestani .

Diagnosis.

Distinguishable from other fungi based on a diagnostic nucleotide signature in SSU V 4 (positions 966–975 gatcaagagc in S. cerevisiae ; no mismatch allowed). Forms a monophyletic, least inclusive clade in Aquamastigomycetes, covering sequences EUK 1102371 , EUK 1107057 , EUK 1124848 , EUK 1138328 , EUK 1102991 , EUK 1124847 , and EUK 0320721 (Fig. 1 ).

Notes.

Recognized based on eDNA sequences only. Currently includes Aquamastigaceae (fam. nov.) and potential family-level taxa represented by sequences EUK 1102371 (permafrost sample in Canada), EUK 1107057 (lake sediment sample in Sweden), EUK 1124848 (forest soil sample in Estonia), EUK 1138328 (wastewater sample in Estonia), and EUK 1102991 (lake sediment sample in Sweden).

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.