Savannolpidium 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

Savannolpidium Tedersoo & Esmaeilzadeh-Salestani gen. nov.

Type species.

Savannolpidium raadiense Tedersoo & Esmaeilzadeh-Salestani .

Diagnosis.

Distinguishable from other fungi based on diagnostic nucleotide signatures in ITS 2 (positions 121–135 in type species grtagtaaaagtagc; one mismatch allowed), SSU V 9 (positions 1684–1693 in S. cerevisiae ccttttttyg; one mismatch allowed), and LSU D 2 (positions 719–728 in type species and 604–613 in S. cerevisiae caaaaggatt; one mismatch allowed). Forms a monophyletic, least inclusive clade in Savannolpidiaceae, covering sequences EUK 1124874 and EU 1191210 (Figs 1 , 41 ).

Notes.

Recognized based on eDNA sequences only. Comprises about 15–25 species represented by sequences EUK 1217296 (grassland soil in Austria), EUK 0034005 (forest soil in South Africa), EUK 0036392 (forest soil in South Africa), EUK 0034147 ( woodland soil in New Caledonia), EUK 0036996 (forest soil in Puerto Rico), EUK 0534723 (forest soil in South Africa), EUK 0534729 (forest soil in Spain), EUK 0036910 (forest soil in Estonia), and EUK 0534732 (forest soil in Iran).

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.

Figure 41. Maximum Likelihood SSU- ITS - LSU phylogram indicating the position of Savannolpidium raadiense within Savannolpidiomycetes, with ultra-rapid bootstrap values indicated (for higher-level classifications mainly). Other genus-level groups are collapsed. Olpidiomycota spp. were used as an outgroup.