Japanese Fungi on Plants No.50 before next top
Puccinia
graminis Pers.:Pers. subsp. graminis Cummins
Classification: Basidiomycota, Urediniomycetes, Uredinales,
Pucciniaceae
Distributed widely in Japan. Causes stem
rust of the gramineous plants of more than 12 genera such as wheat, barley, oat,
rye, couch grass and brome, producing uredospores and teliospores on the hosts.
Spermogonial and aecial stages are produced on the Berberis plants such
as B. vulgaris L. Disperses by scattering uredospores and
overwinter by teliospores. Never grow on aritificial media.
Characteristics: Plant pathogen
Morphology: Spermogonial stage: Aecial stage: Aeciospores produced in aecia, globose to rather ellipsoid, cell walls thick at the apical side, verrucose, 16-23 x 15-19 in size. Uredial stage: Uredospores produced in uredinia, ellipsoid to oblong, echinulate, yellow brown to goldennut brown, 22-45 x 13-24 um, the apex thicker, germ pores 3-5 aequatorial. Teleuto stage: Teliospores oblong to narrowly obovoid, light brown to brown, (1-)2(-3) celled, 33-66 x 13-23 um, pedicels narrow, cell walls 7-10 um thick at the apical side. |
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Uredospores | Teliospores |
Herbarium specimen in NIAES
Specimen No. | Scientific name | Host name | Host scientific name | Symptoms | Geographical origin | Collected date | Collector |
103-1-32 | Puccinia graminis subsp. graminis | Wheat | Triticum aestivum | Stem rust | Hakozaki, Fukuoka | 1930.5 | Kawamura, E. |
103-1-33 | " | " | " | " | Kamo, Shimane | 1932.5.27 | Yokogi |
103-1-31 | " | " | " | " | Kounosu, Saitama | 1940.7.19 | |
103-2-21 | " | Barley | Hordeum vulgare | " | Fukuoka | 1940.7.19 | Kawamura, E. |
108-1-56 | " | Timothy | Phleum pratense | " | Iwamizawa, Hokkaido | 1941.8.7 |
(Described by Tsukiboshi, T., NIAES, Microbial Systemtics Lab., 2002)
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