Puccinia coronata (Japanese Fungi on Plants)

Japanese Fungi on Plants No.49 before next top

Puccinia coronata Corda var. avenae Fraser & Ledingham
Classification: Basidiomycota, Urediniomycetes, Uredinales, Pucciniaceae

Distributed maily south from Tohoku, the northern part of Japan. Causes crown rust on plants of Avena, Gramineae such as oat and wild oat, producing uredospores and teliospores on the hosts. Produces spermogonia and aecia on Rhamnus plants. Disperses by scattering uredospores and overwinter by teliospores. Never grow on aritificial media.

Characteristics: Plant pathogen

			Morphology: Spermogonial stage: Aecial stage: Uredial stage: Uredospores produced in uredinia, lacking paraphyses, spherical to subspherical, echinulate, hyaline to yellowish orange inside, 18-30 x 16-24 um, germ pores 9-11 scattered on the surface. Teleuto stage: Teliospores clavate to cylindrical, light brown, 2 (-1) celled, pedicels narrow and rather fragile, 33-75 x 12-23 um, apices with 2 to several digitations 4-16 um long.
Uredospores	Teliospores

Herbarium specimen in NIAES None

(Described by Tsukiboshi, T., NIAES, Microbial Systemtics Lab., 2002)