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A mold (US, PH) or mould (UK, CW) is one of the structures that certain fungi can form. The dust-like, colored appearance of molds is due to the formation of spores containing fungal secondary metabolites .
mold, in biology, a conspicuous mass of mycelium (masses of vegetative filaments, or hyphae) and fruiting structures produced by various fungi (kingdom Fungi). Fungi of the genera Aspergillus, Penicillium, and Rhizopus form mold and are associated with food spoilage and plant diseases.
Hyphomycetes is the scientific classification for molds, which are estimated to have 400,000 species. They can be classified into two divisions or phyla: Zygomycota and Ascomycota. The difference between these two divisions is mainly related to their sexual reproduction and spore production .
Aspergillus (/ ˌ æ s p ər ˈ dʒ ɪ l ə s /) is a genus consisting of several hundred mold species found in various climates worldwide. Aspergillus was first catalogued in 1729 by the Italian priest and biologist Pier Antonio Micheli.
Stachybotrys (/ ˌstækiˈbɒtrɪs /) is a genus of molds, hyphomycetes or asexually reproducing, filamentous fungi, now placed in the family Stachybotryaceae. The genus was erected by August Carl Joseph Corda in 1837.
Health-related reactions in people depend on mold type, the amount and duration of exposure, and individual characteristics. A microorganism and type of fungus, molds are part of the natural environment and can be found everywhere, outside and indoors.
Describe what is meant by the term "dimorphic fungus", name two systemic infections caused by dimorphic fungi, and state how they are initially contracted. A patient infected with HIV and living in the southwestern US frequently takes walks in a dry, arid area that was once a ranch.
Aspergillus, genus of fungi in the order Eurotiales (phylum Ascomycota, kingdom Fungi) that exists as asexual forms (or anamorphs) and is pathogenic (disease-causing) in humans. Aspergillus niger causes black mold of foodstuffs; A. flavus, A. niger, and A. fumigatus cause aspergillosis in humans.
Within fungi, “mold” applies to a wide variety of species including members of the Zygomycota, Ascomycota, and Basidiomycota phyla. Fungal molds include the familiar bread mold Penicillium, which led to the discovery of antibiotics, and Stachybotrys chartarum, one of the species linked to "sick building syndrome" [7].