Blueberry Nude Basidie
| Blueberry Nude Basidie | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Exobasidium myrtilli | ||||||||||||
| Siegmund |
The blueberry Nacktbasidie ( Exobasidium Myrtilli ) is a fungal art from the family of Nacktbasidienverwandten (Exobasidiaceae). It lives as an endoparasite on blueberries ( Vaccinium myrtillus ) and infects the entire plant. Symptoms of infestation by the blueberry naked basid are mainly yellowish or light red leaf spots, which are followed by the appearance of the white mycelium on the plant surface. The species has been found in northern, western and central Europe.
features
Macroscopic features
The blueberry basidia is initially invisible to the naked eye, the initial symptoms are yellowish-green or reddish spots on the leaves of the infected plant. The white mycelium of the fungus later emerges on the underside of the leaf between the leaf veins and from there overgrows the entire plant.
Microscopic features
The mycelium of the blueberry naked basid grows intercellularly and forms suction threads that grow into the host's storage tissue. Basidia are formed either individually or in bushes between the cells of the plant epidermis. The four-sported basidia are long, unseptate and narrow-clumped, the spores hyaline and thin-walled. The latter have a narrow, cylindrical shape, are 10–16 × 1.5–4 µm wide and have 1–3 septa when mature . The rod-shaped conidia are 5–11 × 1–1.5 µm in size.
distribution
In Europe, the distribution of the blueberry naked basid is limited to central, western (including the British Isles) and northern Europe, it is linked to the occurrence of the blueberry ( Vaccinium myrtillum ).
ecology
The only host of the blueberry naked basid is the blueberry. The fungus feeds on nutrients present in the storage tissue of the plants; initially limited to the leaves, then finally to the entire plant. The transmission from one plant to the next does not take place via underground root contact, but via flight of spores. The spores germinate in conidia , from which a new mycelium then develops.
swell
- Martin Beazor Ellis, J. Pamela Ellis: Fungi Without Gills (Hymenomycetes and Gasteromycetes): An Identification Handbook. Chapman and Hall, London 1990, ISBN 0-412-36970-2 .
- German Josef Krieglsteiner (Ed.): The large mushrooms of Baden-Württemberg . Volume 1: General Part. Stand mushrooms: jelly, bark, prick and pore mushrooms. Ulmer, Stuttgart 2000, ISBN 3-8001-3528-0 .