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Living Organisms / Fungi (Bacteria) / Ascomycota / Genus:
Aspergillus
· Fungal
genera and types to have Wildpro links
· General
Notes and Morphology
· References
|
General Notes and Morphology |
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| Aspergillus species are ubiquitous the environment and some are highly resistant to heat and drying. They are saprophytic and frequently live in soil, vegetation, feed and acquire nutrients from dead plant and animal matter. Their spores are produced in large numbers and are spread widely by air currents. In fermented plant matter (e.g. hay, silage, compost) some species (e.g. Aspergillus fumigatus) can dominate over other microorganisms. (B92) (B88) | ||
| Reproduction | Sexual Spores | If sexual reproduction occurs in a species, it will produce ascospores. (B88) |
| Conidia | "Aspergilli produce a
distinctive conidiophore
which consists of a stalk that arises from a specialized cell of the mycelium
called a foot cell. The stalk is enlarge at its uppermost point to form a globose,
hemispherical, flask-shaped or clavate
structure called the vesicle. From fertile areas of the vesicle arise peg-like, conidium-producing
cells called sterigmata.
The sterigmata
may be formed in a single layer or may be arranged in two layers (biseriate) with the
second row arising for the first. The sterigmata
form unbranching chains of conidia
from their distal ends. (B92)"
These fruiting bodies are important diagnostic features. (B88) |
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| Primary References at the level of this taxa | |
|---|---|
Genus Author |
Suzanne Boardman |
| B47 | John F Timoney, James H Gillespie, Fredric W Scott, Jeffrey E Barlough |
| Hagan and Bruner's Microbiology and Infectious Diseases of Domestic Animals - Eight Edition | |
| B88 | Dwight C Hirsh and Yuan Chuang Zee |
| Veterinary Microbiology | |
| B21 | P J Quinn, M E Carter, B Markey, G R Carter |
| Clinical Veterinary Microbiology | |
| B92 | Francis W Chandler, William Kaplan and Libero Ajello |
| A Colour Atlas and Textbook of the Histopathology of Mycotic Diseases | |