Mycosphaerellales » Mycosphaerellaceae


Miuraea Hara, Byogaichu-Hoten (Manual of Pests and Diseases): 779 (1948).

Index Fungorum number: IF 8957; Facesoffungi number: FoF 08512, 1

morphological species (Species Fungorum 2022), 1 species with molecular data.

Associated with leaf spot. Sexual morph: Unknown. Asexual morph: Mycelium hyaline to lightly pigmented, septate, branched, emerging through stomata, thin-walled. Conidiophores little differentiated, semi-macronematous, mononematous, short, sometimes reduced to a conidiogenous cell integrated in the hyphae, with small lateral peg-like protuberances, occasionally subfasciculate and arising from stromatic hyphal aggregations. Conidiogenesis holoblastic, monoblastic, determinate, occasionally polyblastic, proliferation sympodial or percurrent; conidiogenous loci more or less truncate, unthickened or slightly thickened, not darkened. Conidia solitary or catenate, ellipsoid ovoid, subcylindrical-vermiform, obclavate, subclavate, sometimes somewhat asymmetrical, eu- or distoseptate, pluriseptate, septa transverse, oblique to longitudinal, hyaline to faintly pigmented, thin-walled, old conidia often slightly to moderately thick-walled, hila rounded to truncate, unthickened or slightly thickened, not darkened, conidial secession schizolytic (adapted from Braun 1995; Videira et al. 2017).


Type species: Miuraea degenerans (Syd. & P. Syd.) Hara


Notes: Miuraea resembles Pseudocercospora and Pseudocercosporella (Braun 1995) in being hyphomyceteous genera but Miuraea is phylogenetically distinct. Miuraea is unique in producing broad conidia, with longitudinal septa and often constricted at septa. Molecular markers available for Miuraea include ITS, LSU Actin, RPB2 and TEF-1.


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