Hoforsa Tedersoo, 2024

Tedersoo, Leho, Magurno, Franco, Alkahtani, Saad & Mikryukov, Vladimir, 2024, Phylogenetic classification of arbuscular mycorrhizal fungi: new species and higher-ranking taxa in Glomeromycota and Mucoromycota (class Endogonomycetes), MycoKeys 107, pp. 249-271 : 249-271

Hoforsa Tedersoo gen. nov.

Type species.

Hoforsa rebekkae Tedersoo.

Description.

Covers the monophyletic group in Hoforsaceae (Fig. 2 ). Phylogenetically delimited as the least inclusive clade covering sequence accessions EUK 1100001, EUK 1107311 and EUK 1602325 (Suppl. material 3).

Notes.

Recognised based on eDNA sequences only. There are potentially about 20 species in Hoforsa based on ITS and LSU sequences, with examples including taxa represented by sequences EUK 1107311 (bog peat in Svartberget, Sweden, 64.24 ° N, 19.76 ° E) and AM 260926 (bog peat, Scotland) first isolated by Rebekka Artz ( Artz et al. 2007). Most taxa are found from various soils, but the LSU sequence AB 982123 originates from an ectomycorrhizal root of Dipterocarpaceae (Lambir, Malaysia). The most common taxon at 99 % LSU sequence similarity (EUK 1602281) has been recorded from 31 localities in Estonia and Latvia. The genus has a global distribution and it occurs commonly in soil samples but rarely in roots.

Figures

Figure 2. Phylogenetic position of genera and genus-level groups of Endogonomycetes based on Maximum Likelihood analysis of SSU- 5.8 S-LSU sequences. The clades are collapsed, with the number of sequences included in parentheses. Question marks above branches indicate low ultra-rapid bootstrap support (< 95). Orders are highlighted in different colours. The uncollapsed phylogram is given in Suppl. material 3.