Phyllachora graminis (Japanese Fungi on Plants)

Japanese Fungi on Plants No.43 before next top

Phyllachora graminis (Pers. ex Fr.) Nitschke ex Fuckel
Classification: Ascomycota, Pyrenomycetes, Phyllachorales, Phyllachoraceae

Distributed widely in Japan. Parasitizes many gramineous plants and causes tar spot in wheatgrass, bromegrass, orchardgrass, timothy, cogongrass and etc. Produces black, glossy and unheaved stromata under the epidermis of the leaves and produces perithecia inside. Disperses by scattering ascospores. The anamorph is known as the genus Leptostromella.

Characteristics: Plant pathogen Symptom: JPEG (Agropyron, Tar spot, 75kb)

			Morphology: Teleomorph: Perithecia subspherical to obpyriform, 200-300 um in diam., with ostiole opening from the leaf surface. Asci unitunicate, cylindrical to clavate, producing 8 ascospores inside. Ascospores hyaline, single-celled, ellipsoidal, 7-15~4-7 um. Anamorph:
Perithecia and asci	Asci and ascospores

Herbarium specimen in NIAES

Specimen No.	Scientific name	Host name	Host scientific name	Symptoms	Geographical origin	Collected date	Collector
249-1-120	Phyllachora graminis	wheatgrass	Agropyron cristatum	Tar spot	Nishinasuno,Tochigi	1961.7.18	Tsuchiya, Y.
261-1-36	"		Eccoilopus cotulifer	"	"	1961.10.15	Tominaga, T.
261-2-19	"	orchardgrass	Dactylis glomerata	"	"	1961.11.23	"

(Described by Tsukiboshi, T., NIAES, Microbial Systemtics Lab., 2003)