Aspergillus clavatus
Aspergillus clavatus
Aspergillus clavatus is a Schimmelpilzart from the kind of watering can mold ( Aspergillus ). The cosmopolitan widespread species is found mainly in the soil and feces. But it can also infest grain and cause human allergies.
Description
Aspergillus clavatus growing in flat or slightly furry colonies, the mycelium is rather thin for Aspergillus colonies, and the Konidiophore grow between 1.5 and 3 millimeters from high. You through measure 20 to 30 microns. At the stems produce large, blue - green, club-shaped heads. In some tribes, the heads discolor with age to brown, in other strains smell the colonies strongly malodorous.
The heads 300 to 400 microns long and 150-200 microns wide. In old age, the heads into two, three or more compact clumps of Konidienketten and can then measure up to 1 millimeter. The sterigmata are in a single row and measure at the base of the lobe 2.5-3.5 × 2.0-3.0 microns and at the top of the lobe 7.0-8.0 ( in extreme cases up to 10 microns) × 2.5-3.0 microns.
The conidia are elliptical and thick-walled. They measure 3.0-4.5 × 2.5-3.5 microns.
Habitat
Aspergillus clavatus is cosmopolitan spread; its main application area appears to be in the tropics and subtropics. The species is found primarily in soil, on decaying plant parts and in animal feces. Preferably, the feces of the domestic fowl (Gallus gallus domesticus) and Doves ( Columbidae ) is populated. Apparently affects the kind of cereals and other seeds, and can be taken as of humans and animals.
Importance
This type can produce the toxin patulin, which is associated with diseases in humans and animals. In addition there cytochalasin E, and Tryptiquivalin be generated. In addition, Aspergillus clavatus applies since the 1930s as the main cause of Malzarbeiterlunge ( extrinsic allergic alveolitis ). If heavily contaminated grain fed can even lead to serious livestock diseases and deaths.