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Home > Indoor Air QualityFungi In BuildingsFungal GlossaryAlternaria sp.

Alternaria sp.

Alternaria sp. Alternaria sp. Alternaria sp.
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Health Effects
Has been associated with hypersensitivity pneumonitis. Common cause of extrinsic asthma (immediate-type hypersensitivity: type I) (26). May be related to bakers asthma (17). Acute symptoms include edema and bronchiospasms, chronic cases may develop pulmonary emphysema (26).

Very common allergen (7) with an IgE mediated reponse(17).

Growth Indoors
Often found in carpets, textiles, (17, 5), and on horizontal surfaces (often on window frames) (17).

Outdoor Location
Found in soil, (17, 5) seed, and plants(6). Common in outdoor samples.

Potential Toxin Production
Alternaria alternata is capable of producing tenuazonic acid and other toxic metabolites which may be associated with disease in humans or animals (17).

Spore Size
Conidia dimensions 18-83 x 7-18(5). Large spore size 20-200 x 7-18 suggest theat the spores from this fungi will be deposited in the nose, mouth, and upper respiratory tract (17).

Water Activity