Cuniculitremaceae
| Cuniculitremaceae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Cuniculitremaceae | ||||||||||||
| JP Samp. , R. Kirschner & M. Weiss |
The Cuniculitremaceae are a family within the order of the tremellales . The type genus is Cuniculitrema R. Kirschner & JP Sampaio . This is the only family within the tremelloid Heterobasidiomycetes that has anamorphs , which form conidia on Synnema- like structures and have no recognizable fruiting bodies. Molecular biological data confirm the delimitation as an independent family.
features
The representatives of the family do not develop fruiting bodies . The hyphae are hyaline , the septa have dolipores , this is the name given to the pits of the transverse walls of the hyphae in the Basidiomycetes (mushrooms), and they form buckles. The haustoria consist of narrow, thin-walled, sometimes branched, hyphae-like structures that grow out of a swollen base. The basidia are more or less spherical and form longitudinal septa. They are not formed in chains and form greatly elongated sterigms . The basidiospores are allantoid (sausage-shaped), hyaline and thin-walled. They are not septate and germinate with the formation of secondary spores. The conidiogenic cells are formed in clusters on slender hyphae, sometimes also on hyphal swellings, which have an ellipsoidal, sterile base and a septate, fertile apical part. The conidia are more or less spherical, hyaline and thin-walled, smooth and unsepied. A secondary, anamorphic stage forms single, conidiogenic cells on septate hyphae, from which one or more apical, sterigma-like processes grow, which split off the conidia. Basal buckles can be formed or absent.
Genera
The family consists of the teleomorphic genus Cuniculitrema and the anamorphic genera Fellomyces and Sterigmatosporidium. Teleomorphs have so far only been found in southern Germany and Switzerland, amorphous are more widespread.
- Cuniculitrema 1 Art
- Fellomyces 11 species
- Genus Kockovaella 6 species
meaning
The representatives of the family have no economic importance.
Distribution and ecology
The fungi live in bark beetle tunnels in the bark of conifers and parasitically on other fungi, probably on Ophiostoma - or similar tubular fungus species. Representatives of the genus Ophiostoma are responsible for Dutch elm disease .
literature
- P. Cannon and P. Kirk: Fungal Families of the World . CAB International, 2007, p. 95 ( Google Book ).
- R. Kirschner, JPSampaio, M. Gadanho, M. Weiss, and F. Oberwinkler: Cuniculitrema polymorpha (Tremellales, gen. Nov. And sp. Nov.), A heterobasidiomycete vectored by bark beetles, which is the teleomorph of Sterigmatosporidium polymorphuma. In: Antonie van Leeuwenhoek . tape 80 , no. 2 , 2001, p. 149-161 ( online ).