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Aspergillus niger
Wed, 08/19/2009 - 10:52 — aemtek
Genus:
Aspergillus
Species:
niger
Distribution:
Distributed worldwide, extremely abundant.
Substrate:
Primarily isolated from soil and decaying organic materials. Notably present as a contaminant of spices and plant products.
Dispersal:
Conidia or chains of conidia easily become airborne and are dispersed by wind.
Indoor Occurance:
A common indoor contaminant. Often found in floor, carpet, and mattress dust, various organic materials, and air.
Allergenicity:
Allergenic. (See record 6)
Pathogenicity:
Opportunistic pathogen, associated with invasive pulmonary aspergillosis, also causing aspergilloma, cutaneous, pulmonary, and disseminated infections in immunocompromised people.
Notes On Identification:
Not distinctive on spore trap samples. Genus can be identified on surface or bulk samples if the entire sporulating structure is present. Species identification requires mycological examination of aporulating cultures or molecular methods.
Spore Types:
Conidia 4.0-5.0 µm in diameter, brown, globose, irregularly roughened, in chains.