Andinospora Magurno, Uszok, Esmaeilzadeh-Salestani, Tedersoo, M. B. Queiroz & B. T. Goto, 2025

Esmaeilzadeh-Salestani, Keyvan, Queiroz, Mariana Bessa de, Mikryukov, Vladimir, Uszok, Sylwia, Goto, Bruno Tomio, Tedersoo, Leho & Magurno, Franco, 2025, Morphological and phylogenetic analysis of the early-diverging lineage of Glomeromycota suggest two new genera and recombinations in Archaeosporales, MycoKeys 124, pp. 249-273 : 249-273

Andinospora Magurno, Uszok, Esmaeilzadeh-Salestani, Tedersoo, M. B. Queiroz & B. T. Goto gen. nov.

Etymology.

Latin, Andinus (= referring to the Andes Mountain Range), where the species was originally found, and spora (= spores).

Type genus.

Andinospora ecuadoriana (A. Schüßler & C. Walker) Magurno, Uszok, M. B. Queiroz & B. T. Goto , comb. nov.

Basionym.

Archaeospora ecuadoriana A. Schüßler & C. Walker , Mycorrhiza 29: 437 (2019).

Diagnosis.

Differs from Archaeospora and other genera of Archaeosporaceae in (i) having a spore wall with one layer and an inner wall two-layered, and (ii) in the nucleotide composition of sequences of the SSU-ITS-LSU nrDNA region (see Discussion for details).

Genus description.

Spores formed singly in soil, roots, or small clusters, laterally, or intercalary to the sporiferous saccule. Hyaline, small (20 µm diam), glomoid spores detected. Acaulosporoid and entrophosporoid spores hyaline, globose, subglobose, broadly ellipsoid, ovoid, obovoid, or irregular, 43–77 × 43–99 µm diam. Spore wall one-layered continuous with sporiferous saccule wall layer, and an inner (germinal) wall with two hyaline permanent layers. Sporiferous saccule hyaline to subhyaline, with a mono-layered wall continuous with the laminated spore wall layer. Spore walls staining in Trypan blue. Forming mycorrhizal structures staining in Trypan blue.

Ecology and distribution.

Environmental sequencing data indicate that the genus has been recorded in about 15 countries across Africa, South America, Oceania, Europe, and Asia (Suppl. material 6). Most records come from tropical and subtropical ecosystems, particularly broadleaf and coniferous forests, but have also been found in temperate grasslands and woodlands (Suppl. material 5).