Maerjamycetales Tedersoo & Esmaeilzadeh-Salestani ord. nov.

Type family.

Maerjamycetaceae Tedersoo & Esmaeilzadeh-Salestani .

Diagnosis.

Distinguishable from other fungi based on diagnostic nucleotide signatures in SSU V 9 (positions 1684–1690 in S. cerevisiae gatgcat; no mismatch allowed) and LSU D 1 (positions 114–122 in type species and 115–123 in S. cerevisiae cactttctg; no mismatch allowed). Forms a monophyletic, least inclusive clade in Maerjamycetes, covering sequences EUK 1200032, EUK 1217336, EUK 1009005, EUK 0484311, EUK 0484301, and EUK 1138158 (Fig. 1).

Notes.

Recognized based on eDNA sequences only. Currently includes Maerjamycetaceae (fam. nov.) and another potentially family-level group represented by sequences EUK 1200032, EUK 1217336, and EUK 1009005 (all forest soil in Estonia).