Pleosporales » Phaeosphaeriaceae

Neoophiobolus

Neoophiobolus Mapook & K.D. Hyde, in Mapook et al., Fungal Diversity 101: 74 (2020).

          Index Fungorum number: IF 557343; Facesoffungi number: FoF 07808, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on dead stems. Sexual morph: Ascomata immersed to semi-immersed, solitary, scattered, globose to subglobose, coriaceous, dark brown. Ostiole short papillate, with hyaline periphyses-like. Peridium comprising several layers of hyaline or pale brown to dark brown, pseudoparenchymatous cells, arranged in a textura angularis. Hamathecium composed of cylindrical to broadly filiform, septate, branching pseudoparaphyses, anastomosing above the asci. Asci overlapping, 8-spored, bitunicate, cylindrical to cylindric-clavate, straight or slightly curved, apically rounded, with ocular chamber visible when immature. Ascospores fasciculate, in parallel, scolecosporous, hyaline to pale yellow brown, filiform, 10–20-septate with minute guttule in each cell, slightly curved, constricted at the central septum where the spore separates into two parts, without polar appendages. Asexual morph: Unknown (adapted from Mapook et al. 2020).

 

Type species: Neoophiobolus chromolaenae Mapook & K.D. Hyde

 

Notes: Neoophiobolus is characterised by immersed to semi-immersed ascomata, filiform, septate, branching pseudo paraphyses, cylindrical to cylindric-clavate asci and hyaline to pale yellow brown, filiform, 10–20-septate ascospores. Neoophiobolus resembles Ophiobolus in having scolecosporous ascospores with a swollen cell but is phylogenetically distinct. The ideal molecular markers to differentiate between species of Neoophiobolus is ITS and TEF1. Neoophiobolus is a distinct lineage within the family Phaeosphaeriaceae with good statistical support. Molecular markers available for Neoophiobolus are ITS, LSU, SSU and TEF-1.

 

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The website Dothideomycetes.org provides an up-to-date classification and account of all genera of the class Dothideomycetes.

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