Exobasidium symploci-japonicae
| Exobasidium symploci-japonicae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Exobasidium symploci-japonicae | ||||||||||||
| Nagao & Ogawa |
Exobasidium symploci-japonicae is a mushroom art family of Nacktbasidienverwandten (Exobasidiaceae) from the order Ustilaginomycotina . It lives as an endoparasite on Symplocos lucida . Symptoms of infestation by the fungus are light spots on the upper side of the leaves and deformities of the fruits of the host plants. The mushroom species is common in Japan .
features
Macroscopic features
Exobasidium symploci-japonicae is initially invisible to the naked eye. Symptoms of the infestation are yellowish, hypotrophic spots on the upper side of the leaf and protruding mycelium on the underside.
Microscopic features
The mycelium of Exobasidium symploci-japonicae , like all naked basidia, grows intercellularly and forms suction threads that grow into the host's storage tissue. The two- to five-pore, 8–68 × 6–9 µm large basidia are long, unseptate and cylindrical to club-shaped. They grow directly from the host epidermis or from stomata . The elliptical to egg-shaped spores are hyaline , 13–23 × 4–6 µm in size. At first they are unsepted, when ripe they have three to six septa . The conidia are very variable in shape and on fruits 2–9 × 1–2 μm, on leaves 7–23 × 1–2 μm in size.
distribution
The known distribution area of Exobasidum symploci-japonicae includes large parts of Japan .
ecology
The host plant of Exobasidium symploci-japonicae is Symplocos lucida . 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 in germ tubes, from which new mycelium and conidia develop.
swell
- Hideyuki Nagao, Seiji Ogawa, Toyozo Sato, Makoto Kakishima: Exobasidium symploci-japonicae var. Carpogenum var. Nov. causing Exobasidium fruit deformation on Symplocos lucida in Japan . In: Mycoscience . 44, No. 5, October 1, 2003, ISSN 1340-3540 , pp. 369-375. doi : 10.1007 / s10267-003-0126-z .