is a cosmopolitan fungus,
dematiaceous fungus primarily isolated from
plants and soil. Some species are considered as plant pathogens.
This genus lacks a
known sexual state and is generally classified as a dark – walled
dematiaceous fungus. McGinnis et. al. (1986) have reviewed the
Drechslera isolates from human and animal disease and concluded that
all pathogenic species are today considered as members of the genera
Bipolaris and Exserohilum.
Pathogenicity and Health Effects
isolated from a brain abscess recently in a patient evidently lacking any
predisposing condition. Drechslera biseptata is the sole
species known to cause human or animal disease.
Growth is rapid colony texture is velvety to wooly;
surface and reverse colony color is initially white becoming olive brown
Hyphae are septate and brown in color;
Conidia are pale to dark brown in color, cylindrical or sub – cylindrical
in shape, straight and smooth – walled, without a protuberant hilum, and
arise through a pore in a sympodially elongating
Conidiophores are brown in color, simple or branched and geniculate; and
tubes are observed developing perpendicularly to the long axis of the
laboratory precautions are required, no special safety measures needed.