Exobasidium pyroloides
| Exobasidium pyroloides | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Exobasidium pyroloides | ||||||||||||
| Li & Guo |
Exobasidium pyroloides is a mushroom art family of Nacktbasidienverwandten (Exobasidiaceae) from the order Ustilaginomycotina . It is an endoparasite from Gaultheria pyroloides . Symptoms of infestation by the fungus are hypertrophic , reddish spots on the leaves of the host plant and protruding mycelium . The range of the species is in China .
features
Macroscopic features
Exobasidium pyroloides cannot be seen with the naked eye. Symptoms of the infestation are hypertrophic , reddish spots on the upper surface of the leaves of the host plant. In the late stages of the infestation, the leaves are overgrown by white mycelium carpets .
Microscopic features
As with all naked basidia , the mycelium of Exobasidium pyroloides 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 two- to four-pore, 3.5–6 µm wide basidia are cylindrical and simply septate at the base. They grow directly from the host epidermis . The spores are hyaline , cylindrical to ovate, thin-walled and 9–13 × 3–4.2 µm in size. When ripe they have one, rarely two septa .
distribution
The known distribution area of Exobasidum pyroloides includes the Chinese Yunnan .
ecology
The host plant of Exobasidium pyroloides is Gaultheria pyroloides . 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 they have fallen on a suitable substrate, these germinate into conidia or germ tubes from which new mycelium then develops.
swell
- Zhenying Li, Lin Guo: Two new species and a new Chinese record of Exobasidium (Exobasidiales) from China . In: Mycotaxon . 105, 2008, pp. 331-336.