Exobasidium nilagiricum
| Exobasidium nilagiricum | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Exobasidium nilagiricum | ||||||||||||
| Ramakrishnan & Ramakrishnan |
Nilagiricum Exobasidium is a mushroom art family of Nacktbasidienverwandten (Exobasidiaceae) from the order Ustilaginomycotina . It is an endoparasite of Gordonia obtusa . Symptoms of infection by the fungus are hypertrophic , amphigenic spots on the leaves of the host plant. The range of the species is in India .
features
Macroscopic features
Exobasidium nilagiricum cannot be seen with the naked eye. Symptoms of the infestation are hypertrophic , amphigenous spots 10 to 15 mm in diameter on the upper surface of the leaves of the host plant.
Microscopic features
The mycelium of Exobasidium nilagiricum , 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-pored, 32–80 × 4–8 µm large 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 ovate, thin-walled and 12–24 × 4–6 µm in size. When ripe they have up to four septa .
distribution
The known distribution area of Exobasidum nilagiricum is in southern India .
ecology
The host plant of Exobasidium nilagiricum is Gordonia obtusa . 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
- Taracad Subromania Ramakrishnan, K. Ramakrishnan: Exobasidium from South India . In: Proceedings of the Indian Academy of Sciences: Plant Sciences . 29, No. 1, 1949, pp. 5-12. doi : 10.1007 / BF03049983 .