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Black mold fruiting struture (Aspergillus niger)

Image Number: 23542C

Caption:

Black mold (Aspergillus niger) - fruiting structure and spores. Aspergillus niger is a ubiquitous soil fungus that is commonly found in indoor environments, where its black colonies can be confused with those of Stachybotrys spp. The conidiophore (fruiting structure) is the swollen end of a hyphae (the fungal vegetative structure) from which radiate numerous sterigmata (short lengths of narrow hyphae) ending in short chains of conidia (spores). Aspergillus species are common saprophytic molds that grow in household dust, soil, and decaying vegetable matter, including stale food. Some species cause a variety of diseases in humans, including: otomycosis, a chronic fungal growth of the passage into the ear; allergic aspergillosis, a hypersensitive reaction (lung disease) provoked by repeated inhalation of Aspergillus spores. Some strains of A.niger have been reported to produce potent mycotoxins called ochratoxins. Various strains of A. niger are used in the industrial preparation of citric acid and gluconic acid.

Keywords:

| 23542C fungi and slime molds spore hyphae fruiting structure Aspergillus niger aspergillosis conidiophore SEM conidiophores fungi fungus 07.01.07 allergic aspergillosis citric acid conidia conidium fungal spore fungal spores fungi spore fungi spores fungus spore gluconic acid human disease human pathogen industrial production industry inhaled spore inhaled spores lung disease lung infection lung infections mycotoxin mycotoxins ochratoxin ochratoxins otitis externa otomycosis saprophyte saprophytes saprophytic soil fungi soil fungus soil microorganism spores sterigmata allergen allergens allergic reaction fruiting structures hypha mycelia mycelium saprophytic mold saprophytic molds vegetative hypha vegetative hyphae asexual spore asexual spores fruiting bodies fruting body fungal toxin fungal toxins fungi toxin fungi toxins fungus toxin fungus toxins toxin |

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