Drechslera tritici-repentis (Japanese Fungi on Plants)

Japanese Fungi on Plants No.58 before next top

Pyrenophora tritici-repentis (Died.) Drechsler [=Drechslera tritici-repentis (Died.) Shoem.]
Classification: Ascomycota, Locuoascomycetes, Dothideales, Pleosporaceae

Distributed mainly north from Kanto, the central Distr. Causes yellow spot of wheat and stripe of wheatgrass. Sometimes isolated from other grasses or gramineous weeds. Disperses by scattering conidia. Teleomorph produced on the over-wintering stems.

Characteristics: Plant pathogen

		Morphology: Teleomorph: Pseudothecia with setae around beak. In cylindrical asci, producing ascospores hyaline to pale yellow brown, boat-shaped, 42-69 x 14-29 um in size with 1-2 vertical and 3 transverse septa. Anamorph: On pale yellow brown conidiophores, producing conidia subhyaline to yellow brown, cylindrical or slightly curved with both ends round and tip cell snake-head shaped, 75-250 x 14-20 um in size with 1-9 pseudosepta.
Conidia (in vitro)

Herbarium specimen in NIAES

Specimen No.	Scientific name	Host name	Host scientific name	Symptoms	Geographical origin	Collected date	Collector
135-1-20	Drechslera tritici-repentis	Wheatgrass	Agropyron sp.	Stripe	Asyoro, Hokkaodo	2002.8.27	Tsukiboshi, T.

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