Exobasidium inconspicuum
| Exobasidium inconspicuum | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Exobasidium inconspicuum | ||||||||||||
| Nagao & Ezuka |
Exobasidium inconspicuum is a mushroom art family of Nacktbasidienverwandten (Exobasidiaceae) from the order Ustilaginomycotina . It lives as an endoparasite on Vaccinium hirtum var. Pubescens . Symptoms of infection by the fungus are small, light-colored spots on the leaf surface of the host plants. The mushroom species is common in Japan .
features
Macroscopic features
Exobasidium inconspicuum is initially invisible to the naked eye. Symptoms of infestation are 2–8 mm, slightly lightened spots on the leaf surface of infested plants, but the exact pathology of the species has not yet been researched.
Microscopic features
As with all naked basidia , the mycelium of Exobasidium inconspicuum grows intercellularly and forms suction threads that grow into the host's storage tissue. The two- to four-pore, 80–100 × 4–8 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 , 9–19 × 3.5–6 µm in size. At first they are unsepted, when ripe they have up to four septa . The conidia are bacillus-shaped and 3–6 × 1–1.5 μm in size.
distribution
The known distribution area of Exobasidum inconspicuum extends over the whole of Japan .
ecology
The host plant of Exobasidium inconspicuum is Vaccinium hirtum var. Pubescens . 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 and conidia, from which new mycelium then develops.
swell
- Akinori Ezuka, Yukio Harada, Toyozo Sato, Makoto Kakishima & Hideyuki Nagao: Two new species of Exobasidium causing Exobasidium diseases on Vaccinium spp. in Japan . In: Mycoscience . tape 47 , no. 5 , October 16, 2006, ISSN 1340-3540 , p. 277–283 , doi : 10.1007 / s10267-006-0307-7 ( springerlink.com [accessed October 5, 2012]).