Japanese Fungi on Plants No.60 before next top

Setosphaeria monoceras Alcorn [=Exserohilum monoceras (Drechsler) Leonard & Suggs]
Classification: Ascomycota, Locuoascomycetes, Dothideales, Pleosporaceae

Distributed widely in Japan. Causes leaf blight of the genus Echinochloa, such as barnyardgrass, etc. and utilized as a biocontrol agent for the weeds. The genus Oryza also recorded as a host. Disperses by scattering conidia. Teleomorph has never been observed in nature.

Characteristics: Plant pathoge   Symptom: JPEG (Barnyardgrass, Leaf blight, 45kb)

Morphology:
 Teleomorph: Produced by paired culture on artificial media. Producing cylindrical to clavate asci in black pseudothecia with setae. Ascospores hyaline, fusiform to oblong, 45-75 x 11-20 um produced in asci.
 Anamorph: On dark olive brown conidiophores,  producing conidia straight or curved, pale brown to olive brown, fusiform, hilum protrudent at the base, 60-150 x 15-25 um, with 4-10 pseudosepta.

Conidium

Herbarium specimen in NIAES

Specimen No. Scientific name Host name Host scientific name Symptoms Geographical origin Collected date Collector
135-1-16 Exserohilum monoceras  Barnyardgrass Echinochloa crus-galli var. aristata  Leaf blight Tsuruoka, Yamagata 2002.9.19 Yoshida, S.
135-1-17 " Barnyardgrass Echinochloa crus-galli " Sapporo, Hokkaido 2002.8.30 Tsukiboshi, T.

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


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