Exobasidium tengchongense
| Exobasidium tengchongense | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Exobasidium tengchongense | ||||||||||||
| Li & Guo |
Exobasidium tengchongense is a mushroom art family of Nacktbasidienverwandten (Exobasidiaceae) from the order Ustilaginomycotina . It is an endoparasite of Pieris formosa . Symptoms of infestation by the fungus are hypertrophic red spots on the leaves of the host plant. The range of the species is in China .
features
Macroscopic features
Exobasidium tengchongense cannot be seen with the naked eye. Symptoms of the infestation are hypertrophic , red spots on the upper surface of the leaves of the host plant.
Microscopic features
The mycelium of Exobasidium tengchongense , like all naked basidia, 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 µm wide basidia are cylindrical to club-shaped and simply septate at the base. They grow directly from the host epidermis . The spores are hyaline , cylindrical to club-shaped, thin-walled and 10–15 × 2.5–4 µm in size. When ripe they have one to three septa . Conidia are absent.
distribution
The known distribution area of Exobasidum tengchongense includes Yunnan .
ecology
The host plant of Exobasidium tengchongense is Pieris formosa . 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
- Lin Guo & Li Zhenying: Two new species of Exobasidium (Exobasidiales) from China . In: Mycotaxon . tape 104 , 2008, p. 331-336 .