Furthermore, Pitt (1979) also mentioned, for Penicillium species branched or simple conidiophores
, phialides, metulae and conidia are observed.
The single observation of typical conidiophores
in microscopic lesions justifies the histopathological diagnosis of aspergillosis, still in absence of fungal culture or immunological tests (10).
dark brown to black brown arising from foot cell.
A whitish, cotton-like material consisting of fungal hyphae and dusky black conidiophores
, together with epithelial debris and exudates, is the hallmark of this condition.
Aspergillus cultured optimally on Sabourad's agar produces characteristic conidiophores
schenckii appears as small (2 to 5 micrometers), round to oval to cigar-shaped yeast cells or fine, branching septate hyphae with either ovoid microconidia borne in clusters from the ends of conidiophores
(having a flowerette arrangement) or are brown, oval or triangular, thick-walled, and directly attached to the sides of the hyphae.
The light period enables for the formation of conidiophores
while the dark period induces the formation of conidia.
The conidiogenous cells were cylindrical, hyaline, with a collarette and thickened ring in the apex, and arose at the tips of short, much branched conidiophores
cystidiosus also produced conidiophores
bearing conidia at the apex (called synnemata or coremia by Miller ) (Table 3, Fig.
At the same time the mould, which comprises spore-bearing growths called conidiophores
, appears on the surface.
Furthermore, the conidiogenous loci in Passalora fuliginosa and Stenella diospyri are conspicuously thickened and pigmented, and the latter species is additionally distinguished by having verruculose superficial hyphae with solitary conidiophores
The use of crystal violet allows to differentiate both species, dyeing the conidia, being the coloration more intensive at the scar (hilum) or point of attachment of the conidia to the conidiophores
, present in Paracercospora fijiensis and absent in Pseudocercospora musae, anamorphs of M.