Japanese Fungi on Plants No.24 before next top

Cochliobolus nodulosus Luttr. [=Bipolaris nodulosa (Berk. & Curtis) Shoem., Helminthosporium nodulosum (Berk. & Curtis) Sacc.]
Classification: Ascomycota, Locuoascomycetes, Dothideales, Pleosporaceae

Distributed mainly south from Kanto, the central part of Japan. Causes leaf blight on goosegrass, etc. Sometimes isolated from other gramineous weeds. Disperses by scattering conidia. Teleomorph has never been observed in nature.

Characteristics: Plant pathogen

Morphology:
 Teleomorph: Produced by paired culture on artificial media. Producing cylindrical asci in black pseudothecia. Hyaline and filamentous ascospores of 98-193 x 4-8 um produced in coiled helix in asci.
 Anamorph: On pale brown to dark brown conidiophores,  producing conidia straight, pale brown to dark brown, oval to obclavate, 43-78 x 16-19 um, with 5-7 pseudosepta.

Conidium

Herbarium specimen in NIAES

Specimen No. Scientific name Host name Host scientific name Symptoms Geographical origin Collected date Collector
111-1-83 Cochliobolus nodulosus Goosegrass Eleusine indica  Leaf blight Suginami, Tokyo 1931.9.13 Tasigi, H.
135-1-13 Bipolaris nodulosa  " " Takasaki, Gumma 2001.11.12 Tsukiboshi, T.

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


Copyright of the page belongs to Natural Resources Inventory Center, NIAES.