Nigrospora oryzae (Japanese Fungi on Plants)

Japanese Fungi on Plants No.42 before next top

Nigrospora oryzae (Berk. & Br.) Petch
Classification: Deuteromycotina, Hyphomycetes

Distributed mainly south from Kanto, the central Distr. Reported as a pathogen causing leaf spot of rice in Japan, but frequently isolated mainly from gramineous plants as a leaf inhabitant. Disperses by scattering conidia. Teleomorph, Khuskia oryzae Hudson, not yet discovered in Japan.

Characteristics: Plant pathogen, leaf inhabitant

		Morphology: Teleomorph: Anamorph: Conidiophores colorless to brown, branched, flexuous and producing a conidiogenous cell hyaline, sub-spherical, 6-9 um in diam. Conidia solitary, black, spherical to broadly ellipsoidal, single celled, surface smooth, 10-16 um in diam.
Conidia

Herbarium specimen in NIAES

Specimen No.	Scientific name	Host name	Host scientific name	Symptoms	Geographical origin	Collected date	Collector
102-1-85	Nigrospora oryzae	rice	Oryza sativa	leaf spot	Kiyose, Tokyo	1957.10	Tominaga, T.
102-1-86	"	"	"	"	"	"	"
102-1-88	"	"	"	"	"	1959.8.18	"
102-1-89	"	"	"	"	Tokorozawa, Saitama	"	"
102-1-90	"	"	"	"	Kurume, Tokyo	"	"
102-1-87	"	"	"	"	Tachikawa, Tokyo	1959.8.20	Motohashi, S.
256-1-49	"	"	"	"	Kiyose, Tokyo	1959.9	Tominaga, T.

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