Japanese Fungi on Plants No.54 before next top
Pyrenophora
chaetomioides Speg. [=Drechslera avenacea (Curtis ex Cooke) Shoem.]
Classification: Ascomycota, Locuoascomycetes, Dothideales, Pleosporaceae
Distributed northern form Kyushu, the southern Distr. Causes leaf blight
in oat. Frequently isolated from other grasses, i.e. wild oat, of Avena. Disperses by scattering conidia.
Teleomorph produced on rotten stem and seeds.
Characteristics: Plant pathogen Symptom: JPEG
(Oat, Leaf blight, 40kb)
 |
Morphology: Teleomorph: Pseudothcia with setae. In cylindrical asci, producing ascospores of hyaline to pale yellow brown, ellipsoid to braodly cylindrical, 35-75 x 17-30 um in size with a vertical and 3-6 transverse septa. Anamorph: On brown to dark brown conidiophores, producing conidia of pale broen to olive brown, cylindrical with rounded ends, 50-130 x 17-30 um in size, 1-9 pseudosepta. |
|
|
Conidia |
Herbarium specimen in NIAES
| Specimen No. | Scientific name | Host name | Host scientific name | Symptoms | Geographical origin | Collected date | Collector |
| 104-1-3 | Drechslera avenacea | Oat | Avena sativa | Leaf blight | Sakashita, GIfu | 1904.6.1 | Hara, K. |
| 104-1-4 | "(?) | " | " | " | Nishigahara, Tokyo | 1908.7.10 | Hori, S. |
| 256-2-46 | " | " | " | " | Nishinasuno, Tochigi | 1961.5.12 | |
| 256-2-47 | " | " | " | " | " | 1961.5.26 | |
| 249-1-33 | " | " | " | " | Nishinasuno, Tochigi | 1961.10.15 | Tominaga, T. |
| 104-1-5 | " | Wild oat | Avena fatua | Matsudo, Chiba | 1913.7.8 | Maruo, S. |
(Described by Tsukiboshi, T., NIAES, Microbial Systemtics Lab., 2002)
Copyright of the page belongs to Natural Resources Inventory Center, NIAES.
