Parakickxellales Tedersoo, 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

Parakickxellales Tedersoo ord. nov.

Type family.

Parakickxellaceae Tedersoo .

Diagnosis.

Separation from other fungi based on diagnostic nucleotide signatures in SSU V 8 (positions 1476–1495 in S. cerevisiae ccaagkcaacgagtytacaa; one mismatch allowed) and LSU D 1 (positions 184–198 in type species and 180–194 in S. cerevisiae ggtataatttgcctg; one mismatch allowed). Forms a monophyletic, least inclusive clade in Parakickxellomycetes, covering sequences EUK 1189320 , EUK 1189314 , EUK 1100806 , EUK 1189309 , UDB 014747 , EUK 1107625 , EUK 1105293 , EUK 1189310 , EUK 1700155 , EUK 1189325 , EUK 1189316 , and EUK 1189321 (Fig. 1 ).

Notes.

Recognized based on eDNA sequences only. Currently includes Parakickxellaceae (fam. nov.) and other potential family-level groups represented by sequences EUK 1189320 (forest soil in Puerto Rico), EUK 1189314 (forest soil in Dominica), EUK 1100806 (agricultural soil in Great Britain), EUK 1189309 (forest soil in Dominica), UDB 014747 ( woodland soil in Madagascar), EUK 1107625 (unspecified soil in Tibet), EUK 1105293 (forest soil in Puerto Rico), and EUK 1189310 (forest soil in Dominica).

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.