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23585C

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Image #   23585C
Name:   Aspergillus nidulans hyphae and sexual spores
Copyright:   Copyright 2003 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Aspergillus nidulans hyphae and sexual spores.Aspergillus nidulans (also known as Emericella nidulans) is a filamentous fungus that is the only member of the genus Aspergillus that forms sexual spores through meiosis (seen here in this image as large spores). A. nidulans is also a homothallic fungus, meaning it can form asexual spores by producing conidiphores that bear chains of asexual spores (conidia produced without a mating partner). Aspergillus species are common saprophytic molds that grow in household dust, soil, and decaying vegetable matter, including stale food. A. nidulans has been an important research organism for studying eukaryotic cell biology and has a long history of use for the study of a wide range of subjects including basic genetic problems (recombination, DNA repair, mutation), cell cycle control and pathogenesis, as well as metabolism of other Aspergillus species. A.nidulans produces the toxin, sterigmatocysin, which may lead to food contamination. Repeated inhalation of A.nidulans spores also causes allergic aspergillosis, a hypersensitive lung reaction in people who have asthma. Mycetoma (Madura foot) may result when this fungus infects subcutaneous tissue, bone and skin.
Magnification*: x440
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   fungi and slime molds spore hyphae Aspergillus SEM fruiting structure aspergillosis conidiophore conidiophores fungi fungus 07.01.07 allergic aspergillosis conidia conidium fungal spore fungal spores fungi spore fungi spores fungus spore human disease human pathogen industry inhaled spore inhaled spores lung disease lung infection lung infections mycotoxin mycotoxins 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 bone infection bone infections cell mutation DNA repair fungal infection fungal infections fungi infection fungi infections fungus infection fungus infections genetic problem genetic problems madura foot model organism mutation mycetoma recombination research organism skin infection skin infections sterigmatocysin tissue infection tissue infections pahtogenesis Ascomycota asthma cell biology cell cycle control eukaryote eukaryotic cell biology homothallic homothallic fungi homothallic fungus meiosis self-fertilize self fertilize sexual spore sexual spores spore inhalation Aspergillus nidulans

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