Sumavosporidiomycetes Tedersoo & Esmaeilzadeh-Salestani

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

Sumavosporidiomycetes Tedersoo & Esmaeilzadeh-Salestani class. nov.

Type order.

Sumavosporidiales Tedersoo & Esmaeilzadeh-Salestani .

Diagnosis.

Distinguishable from other fungi based on a diagnostic nucleotide signature in SSU V 6 (positions 1153–1167 gagcacaccaaragt or gacgacacaagaagt in S. cerevisiae ; no mismatch allowed). Forms a monophyletic, least inclusive clade in Rozellomycota, covering sequences EUK 1206927 , EUK 1202246 , EUK 1200658 , UDB 029033 , EUK 1105717 , EUK 1107386 , EUK 1106576 , EUK 1101061 , and EUK 1101529 (Fig. 1 ).

Notes.

Recognized based on eDNA sequences only. Encoded as clade GS 01 in EUKARYOME v 1.9. Previously considered a distinct phylum-level lineage, but inclusive taxon sampling in Rozellomycota places Sumavosporidiomycetes in this phylum. Currently harbors Sumavosporidiales (ord. nov.). Comprises potentially 800–1050 species. Members of this class have been detected from soil (99.5 % out of 4122 records), sediments (0.3 %), and water (0.1 %). Recorded from high arctic to hot tropical biomes across all continents, including Antarctica.

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.