|Description:||Under a relatively low magnification of 30X, this micrograph of a growing colony of Aspergillus alliaceus revealed some of the ultrastructural characteristics including the presence of sclerotia and conidial heads. Used as a food source during periods of dormancy, sclerotia consist of a hardened mass of the fungus’ own mycelia, and the conidia are the asexually-produced spores, or means of reproduction, which resides atop the conidiophore.|
Aspergillus is a fungus that is common in the environment. It is found in soil, on plants, and in decaying organic matter. It is also found in household dust and building materials. There are many different species of Aspergillus, but the most common species are A. fumigatus and A. flavus. Other species are A. terreus, A. nidulans, and A. niger. Aspergillus spp. are responsible for the disease aspergillosis.