Tibetochytriaceae Tedersoo fam. nov.

Type genus.

Tibetochytrium Tedersoo .

Diagnosis.

Distinguishable from other fungi based on diagnostic nucleotide signatures in SSU V 4 (positions 722–736 in S. cerevisiae gtgggttagggatcc; one mismatch allowed), 5.8S (positions 120–134 in type species and S. cerevisiae gctggtattccggcg; one mismatch allowed), and LSU D 2 (positions 505–619 in type species and 600–614 in S. cerevisiae ggcttagctggatac; one mismatch allowed). Forms a monophyletic, least inclusive clade in Tibetochytriales, covering sequences EUK 1186747, EUK 1123755, and EUK 1186750 (Fig. 1).

Notes.

Recognized based on eDNA sequences only. Includes Tibetochytrium (gen. nov.) and another potentially genus-level group represented by the sequence EUK 1186747 (forest soil in Yunnan, China).