Aspergillus nestle ( lat. Aspergíllus nídulans ) - a species of ascomycetes fungi belonging to the genus Aspergillus ( Aspergillus ). Previously, this name applied only to the anamorphic stage of the fungus, and the teleomorph was called submerged Emericella ( Emericella nidulans ).
| Aspergill nest |
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| Scientific classification |
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| Kingdom : | Higher mushrooms |
| Subdivision : | Pezizomycotina |
| Subclass : | Eurotiomycetidae |
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| International scientific name |
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Aspergillus nidulans ( Eidam ) G.Winter , 1884 |
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Content
Colonies on agar Chapek with yeast extract (CYA) 4-5 cm in diameter on the 7th day, velvety, rarely woolly, with white mycelium and varying intensities of conidial sporulation in greenish tones. Sometimes purple soluble pigment is released. The reverse is orange, brown, violet-brown, less often pale. Abundant white cleistothecia, surrounded by white to yellowish integument cells. At 37 ° C, colonies 5–7 cm in diameter, without aerial mycelium, with a more pronounced predominance of ascospore sporulation. On malt extract agar (MEA), colonies of 3.5-6 cm in diameter on the 7th day are velvety or woolly, with a predominance of conidial or ascospore sporulation. The reverse is pale to violet-brown.
Kleistothecia are plentiful, white, then dark red or light wine, 100-250 microns in diameter. Ascospores are purple-red, ellipsoidal, with two close equatorial ridges, 3.8-6 microns in length.
The conidiophore heads are bunk, with a brown pedicle 60-150 microns long, with hemispherical apical bloating up to 8-12 microns. Metulae covering the upper half or smaller part of the swelling, 5-8 microns in length. Violets 5-8 microns long. Conidia are spherical, rough, 3–3.5 μm in diameter.
Differences from close species
It is determined by rapid growth at 37 ° C, copious formation of clematothecia with integumentary cells, greenish conidial sporulation, represented by bunk heads on brown legs.
A widespread species, often isolated from the soil and from various plant substrates. It is rare for food products, most often for grain and cereal products.
Producer of sterigmatocystin and potent toxin estestrine .
Aspergillus nidulans ( Eidam ) G. Winter , Rabenh. Krypt.-Fl. ed. 2 1 (2): 62 (1884). - Sterigmatocystis nidulans Eidam , 3: 392 (1883).
Synonyms
- Aspergillus nidulellus Samson & W. Gams , 1986 , nom. superfl.
- Diplostephanus nidulans (Eidam) Neveu-Lem. , 1921
- Emericella nidulans (Eidam) Vuill. , 1927
- Sterigmatocystis nidulans Eidam, 1883
