Exobasidium lushanense
| Exobasidium lushanense | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Exobasidium lushanense | ||||||||||||
| Li & Guo |
Exobasidium lushanense is a mushroom art family of Nacktbasidienverwandten (Exobasidiaceae) from the order Ustilaginomycotina . It is an endoparasite of Rhododendron simsii . Symptoms of infection by the fungus are bright spots on the leaves of the host plant. The range of the species is in China .
features
Macroscopic features
Exobasidium lushanense cannot be seen with the naked eye. Symptoms of the infestation are hypertrophic , bright spots on the leaves.
Microscopic features
As with all naked basidia , the mycelium of Exobasidium lushanense grows intercellularly and forms suction threads that grow into the host's storage tissue. The fungus has a monomitic hypha structure made up of purely generative hyphae without buckles . The three- to six-pore, 36–60 × 4–6 µm wide basidia are cylindrical and simply septate at the base. They grow directly from the host epidermis . The spores are hyaline , cylindrical to club-shaped, thin-walled and 9–13 × 3–4 µm in size. When ripe they have one to four septa . Conidia are absent.
distribution
The known distribution area of Exobasidum lushanense only includes the Chinese type locality , the Lushan Botanical Garden in Jiangxi .
ecology
The host plant of Exobasidium lushanense is Rhododendron simsii . The fungus feeds on the nutrients present in the storage tissue of the plants, its basidia later break through the leaf surface and release spores. After falling on a suitable substrate, these germinate into germ tubes , from which new mycelium then develops.
swell
- Zhenying Li, Lin Guo: Three new species of Exobasidium (Exobasidiales) from China . In: Mycotaxon . 107, 2009, pp. 215-220.