Atractogloea stillata
| Atractogloea stillata | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Atractogloeaceae | ||||||||||||
| Oberw. & R.Bauer | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Atractogloea | ||||||||||||
| Oberw. & Bandoni | ||||||||||||
| Scientific name of the species | ||||||||||||
| Atractogloea stillata | ||||||||||||
| Oberw. & Bandoni |
Atractogloea stillata is a species of mushroom that belongs to the Atractiellales order. Since the species has a unique combination of characteristics,the monotypical family of Atractogloeaceae with the monotypical genus Atractogloea was introducedfor the taxon . The species has small, teardrop-shaped and firmly attached fruiting bodies and hyphae that carry buckles. Hyphidia and maginal hyphaeare absent in or around the hymenium. In addition, Atractogloea stillata has auricularioid , sterigmeless basidia . The exact position within the Basidiomycetes is unknown, as the species has not yet been investigated using molecular biology (as of 2015).
Features of the family and genus
The species form small, pillow or teardrop-shaped, gelatinous fruiting bodies. The hyphae is monomitic, the hyphae have simple, swollen septal pores and a diglobular spindle pole body . In addition, the hyphae wear buckles, cystids or hyphidia are absent. The basidia are elongated or cylindrical and transversely septate and have no sterigms. Therefore, the basidiospores cannot be actively shot. Instead, the spores are sessile and formed sequentially on terminal or lateral buds. The spores themselves are hyaline, thin-walled, smooth and do not stain with iodine. There is a yeast-like secondary crop form ( anamorphic ) that can multiply by budding.
Features of the species
The fruit bodies are soft, gelatinous and teardrop or pillow-shaped. They have a diameter of 1 mm, but can sometimes be somewhat elongated and then reach a length of 1.5 mm at the point of longest extension. The hyphae are (1.5–) 2–3 (–5) µm wide, hyaline and slightly gelatinized, but clearly recognizable. The hyphae wear buckles, often two or three buckles appear in a row. Branches also arise from the buckles. The terminal, elongated to cylindrical basidia measure 3.5–4.5 (–6) × 40–105 µm and are transversely septate by three septa when ripe. The sedentary, inamyloid basidiospores are passively released as soon as they are mature. They are (4–) 5–8 µm long and 3–4 µm wide. Their walls are thin, smooth, and hyaline. They germinate by budding; the buds are often already developing while the spores are still attached to the basidia.
Distribution and ecology
Only one collection from California is known to date. The presumably saprobiontic fungus grows on dead palm fronds.
Genera
The family has only one monotypical genus with the type species Atractogloea stillata Oberw. & Bandoni .
Systematics
Atractogloea stillata has a combination of characteristics that is unique within the order of the Atractiellales. This combination of important characteristics led to the establishment of a separate family for the taxon. The characteristic features are:
- auricularioid (phragmo-) basidia ,
- multiple basidiospores production
- simply septate pores with slightly swollen pore edges
- a diglobular spindle pole body and
- the yeast-like germination from the basidiospore, which leads to a temporary yeast stage.
The family has an isolated position within the auricularioiden fungi. The species has not yet been investigated using molecular biology, so the exact position within the Basidomycten is unknown.
literature
- F. Oberwinkler & RJ Bandoni: Atractogloea: a new genus in the Hoehnelomycetaceae (Heterobasidiomycetes) . In: Mycologia . tape 74 , 1982, pp. 634-639 ( cybertruffle.org.uk/cyberliber ).
- P. Cannon & P. Kirk: Fungal Families of the World . CAB International, 2007, p. 29 .
- Franz Oberwinkler and R. Bauer: The systematics of gasteroid, auricularioid Heterobasidiomycetes . In: Sydowia . tape 41 , 1989, pp. 224-256 ( online ).
Web links
- Oberw. & R. Bauer: Atractogloeaceae. In: Mycobank (Fungal Nomenclature and Species Databank). International Mycological Association, accessed February 12, 2015 .
- Oberw. & Bandoni: Atractogloea. In: Mycobank (Fungal Nomenclature and Species Databank). International Mycological Association, accessed February 12, 2015 .