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Wallemia sebi : ウィキペディア英語版 | Wallemia sebi
''Wallemia sebi'' is a brown mold or hyphomycete commonly found in indoor air dust, soil and dried and salty foods (bread, cakes, sugar, dried fish, dates, bacon, jams). It is xerophilic, meaning it thrives in arid environments or substrates with little free water. To isolate this fungus, media with low water activity need to be used, with solutes such as glycerol, high sugar content or high salt content. It is present in a significant proportion of human dwellings. On agar media with low water activity, ''W. sebi'' forms slow growing brown colonies with a fine velvety texture. The conidia (asexual spores) are produced in long chains derived from a conidiogenous cell on branches of hyphae, and are often in groups of four. Only the asexual stage is observed in culture, although analyses of its genome indicate the presence of mating genes and genes involved in meiosis.〔 Under salty conditions, ''W. sebi'' produces secondary metabolites causing hemolysis.〔 It has been rarely reported to cause subcutaneous infections in humans.〔 ==References==
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