Mycosphaerellales » Mycosphaerellaceae


Neopseudocercosporella Videira & Crous, in Videira et al., Stud. Mycol. 83: 80 (2016).

Index Fungorum number: IF 816820; Facesoffungi number: FoF 08524, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.

Associated with leaf spot. Sexual morph: Ascomata pseudothecial, mycosphaerelloid, single to aggregated, black, immersed, becoming erumpent, globose, with an apical ostiole. Peridium comprising medium brown cells of textura angularis. Asci aparaphysate, fasciculate, bitunicate, subsessile, obovoid to narrowly ellipsoid. Ascospores, straight to fusoid-ellipsoid, hyaline, guttulate, thin-walled, with subobtuse ends, medianly 1-septate. Asexual morph: Conidiophores solitary or grouped, erumpent through the cuticle or emerging through stomata, hyaline, sometimes faintly pigmented, smooth, simple, straight, slightly curved or geniculate-sinuous, usually aseptate, i.e. reduced to conidiogenous cells, thin-walled, smooth. Conidiogenous cells hyaline, subcylindrical to geniculate-sinuous, with inconspicuous conidiogenous loci, unthickened, neither darkened nor refractive, mostly truncate. Conidia solitary, hyaline or rarely slightly pigmented, thin-walled, smooth, straight to flexuous, subcylindrical to obclavate, with apex obtuse to subacute and base truncate, sometimes somewhat obconically, one- to multiseptate, hilum not thickened or darkened (adapted from Videira et al. 2016).


Type species: Neopseudocercosporella capsellae (Ellis & Everh.) Videira & Crous


Notes: Neopseudocercosporella is characterised by pseudothecial mycosphaerelloid ascomata, obovoid to ellipsoid asci, and straight to fusoid-ellipsoid 1- septate ascospores. The asexual morph is coelomycetous. Neopseudocercosporella is a distinct genus in Mycosphaerellaceae. Molecular markers available for Neopseudocercosporella include ITS, LSU, Actin, BTUB, Calmodulin, GAPDH, Histone, RPB2 and TEF-1.


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