Juel's cranberry nude base
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Juel's cranberry naked basid ( Exobasidium juelianum ) |
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| Nannfeldt |
Juel cranberry Nacktbasidie ( Exobasidium juelianum ) is a smut fungus art from the family of Nacktbasidienverwandten (Exobasidiaceae). It lives as an endoparasite on cranberries ( Vaccinium vitis-idaea ) and infects the entire plant. Symptoms of an infestation by Juel's cranberry nudibranch are mainly dwarfism, strong branching and weaker, wavy growth of the leaves of the host plant. The species has been found in Northern and Central Europe and named after the botanist and mycologist Hans Oscar Juel .
features
Macroscopic features
Juel's cranberry nude base is initially invisible to the naked eye. The initial symptoms of the infestation can only be seen on the leaves: the leaves of infected cranberries remain thin and flat, they are softer than healthy plants and have a wavy edge and a light red top. On the underside, the mycelium of the fungus finally emerges between the leaf veins and infects the entire plant from there. Symptoms of systemic infestation are the restricted growth and the stronger branching of the host plant compared to unaffected conspecifics.
Microscopic features
The mycelium of Jule's cranberry-naked basid grows intercellularly and forms suction threads that grow into the host's storage tissue. The basidia are long, unseptate and narrow-clumped, the spores hyaline and thin-walled.
distribution
In Europe, the distribution of Juels lingonberry naked basid is limited to Central and Northern Europe, it is linked to the occurrence of the lingonberry ( Vaccinium vitis-idaea ).
ecology
The only host of Juel's lingonberry naked basid is the lingonberry. The fungus feeds on the 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 occurs through flight of spores. The spores germinate in germ tubes or conidia , from which a new mycelium then develops.
swell
- 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 .
