Neodeightoniella Crous & W.J. Swart, in Crous et al., Persoonia 31: 211 (2013).
Index Fungorum number: IF 805827; Facesoffungi number: FoF 08519, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Foliicolous, plant pathogenic. Sexual morph: Unknown. Asexual morph: Conidiophores fasciculate, arising from stromata, amphigenous, associated with weakly developed brown stroma of a few brown cells; fascicles with 3–6 conidiophores. Conidiophores erect, brown, unbranched, finely roughened, straight to slightly flexuous, subcylindrical, septate. Conidiogenous cells terminal and integrated, subcylindrical, brown, finely roughened; scars terminal and lateral on conidiogenous cells, darkened, thickened, protruding, tretic with central pore. Conidia solitary, pale brown, surface finely roughened, fusoid-ellipsoid, straight or gently curved, uniseptate; apical cell globose, with prominent mucoid cap; basal cell funnel-shaped, widest two thirds from basal hilum, tapering prominently to truncate hilum, thickened, darkened, with central pore (adapted from Crous et al. 2013).
Type species: Neodeightoniella phragmiticola Crous & W.J. Swart
Notes: Neodeightoniella is characterised by fasciculate brown, unbranched conidiophores, terminal and integrated conidiogenous cells, and solitary, pale brown fusoid-ellipsoid conidia. Neodeightoniella resembles Deightoniella in having pale brown, fusoid-ellipsoid, unequallyuniseptate conidia arising from brown conidiophores. Neodeightoniella differs from Deightoniella in that the conidiophores do not undergo percurrent rejuvenation, have conspicuous apical and lateral conidiogenous loci on the conidiogenous cells, conidia possess a prominent mucoid cap, and conidiophores are organized in fascicles. Neodeightoniella is a distinct and well-supported genus in Mycosphaerellaceae. Molecular markers available for Neodeightoniella are ITS, LSU and RPB2.
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