Wallemia
| Wallemia | ||||||||||||
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Wallemia sebi in a petri dish |
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| Systematics | ||||||||||||
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| Scientific name of the class | ||||||||||||
| Wallemiomycetes | ||||||||||||
| Zalar , de Hoog & Schroers | ||||||||||||
| Scientific name of the order | ||||||||||||
| Wallemiales | ||||||||||||
| Zalar, de Hoog & Schroers | ||||||||||||
| Scientific name of the family | ||||||||||||
| Wallemiaceae | ||||||||||||
| RT Moore | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Wallemia | ||||||||||||
| Johan-Olsen |
Wallemia is a systematically isolated genus of the mushroom (Basidiomycota), whichformsits own class Wallemiomycetes .
features
The conidia carriers are unbranched or sympodially growing continuously with conidiogenic cells and have a thin cell wall. The condidiogenic cells are warty and are then transformed into conidia like arthrospores . These are also warty, short cylindrical and with time rounded. The hyphae are septate . The sept is widened near the pores. This is barrel-shaped and similar to a Doliporus .
Ecology and way of life
Wallemia are found worldwide, but prefer dry habitats . They were isolated from fruits, jams and foods dried and salted with pure sugar, from sea salt, from the ground and from the air. They are therefore sometimes responsible for food spoilage. Some strains produce the toxins walleminol and walleminon and cause subcutaneous infections in humans. Presumably they also cause allergic reactions with the formation of a farmer's lung .
Systematics and taxonomy
Wallemia was first described by Johan-Olsen in 1887. Royall T. Moore then placed them in a separate family within the order of the Filobasidiales . In 2005, however, they were placed in a separate class, the Wallemiomycetes, with an uncertain systematic assignment.
The Index Fungorum lists the following three types:
- Wallemia ichthyophaga Johan-Olsen 1887
- Wallemia muriae (J. Kickx f.) Zalar & de Hoog 2005
- Wallemia sebi (Fr.) Arx 1970
swell
- P. Zalar, GS de Hoog, HJ Schroers, JM Frank, N. Gunde-Cimerman: Taxonomy and phylogeny of the xerophilic genus Wallemia (Wallemiomycetes and Wallemiales, cl. Et ord. Nov.) In: Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology. 87, 2005, pp. 311-328. doi: 10.1007 / s10482-004-6783-x
Individual evidence
- ^ Wallemia on Index Fungorum , accessed July 6, 2013.
