Diversispora C. Walker & A. Schüssler emend. Tedersoo & Magurno

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

Diversispora C. Walker & A. Schüssler emend. Tedersoo & Magurno

Type species.

Diversispora spurca (C. M. Pfeiffer, C. Walker & Bloss) C. Walker & Schüssler.

Description.

Spores diversisporoid, rarely otosporoid or tricisporoid. Diversisporoid spores formed singly, in clusters or in large disorganised fruiting bodies with high spore numbers. Spores with 1–4 wall layers; pores often closed with a septum. Subtending hyphal pores rarely open. Otosporoid spores formed laterally on the persistent neck of a sporiferous saccule. Tricisporoid spores with inner flexible hyaline wall layers (formed de novo) without granular beaded surface and no Melzer reaction. Spore pores generally closed by a septum at the spore base, arising from the innermost wall lamina or inner layer or from both. Forms a monophyletic group within Diversisporaceae based on the SSU- ITS - LSU phylogram (Fig. 1 , Suppl. material 1).

Figures

Figure 1. Phylogenetic position of genera and genus-level groups of Glomeromycota based on Maximum Likelihood analysis of SSU- ITS - 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. For the genus Entrophospora, the so-called S-type reads (VanKuren et al. 2013) were included for comparison. The uncollapsed phylogram is given in Suppl. material 1.