Japanese Fungi on Plants No.66 before next top
Ustilago
avenae (Pers.) Rostr.
Classification: Basidiomycota, Ustilaginomycetes, Ustilaginales,
Ustilaginaceae
Widely distributed in Japan. Causes loose smut in oat and infecting other
gramineous plants, tall oat grass, for example. Destroys all the floral parts,
producing dark brown smut spores and dispersing by scattering them. Grows by
budding of sporidia like yeasts on synthetic media.
Characteristics: Plant pathogen
Morphology: Smut spores globose to subglobose, yellow brown to olive brown, 4-7 x 6-9 um in size with minutely echinulate surface. Producing oval to cylindrical sporidia on basidia at germination. |
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smut spores |
Herbarium specimen in NIAES
Specimen No. | Scientific name | Host name | Host scientific name | Symptoms | Geographical origin | Collected date | Collector |
104-1-7 | Ustilago avenae | Oat | Avena sativa | Loose smut | |||
104-1-8 | " | " | " | " | Chiba, Chiba | 1962.6.21 | Tominaga, T. |
(Described by Tsukiboshi, T., NIAES, Microbial Systemtics Lab., 2002)
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