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).