Japanese Fungi on Plants No.37 before next top

Helminthosporium zonatum Ikata
Classification: Deuteromycotina, Hyphomycetes

 Distributed mainly north from Kyushu, the southern part of Japan. Causes zonate spot in barley. It should be tranferred to the genus Drechslera based on the morphology, but not yet. Disperses by scattering conidia. Teleomorph not yet found.

Characteristics: Plant pathogen   Symptom: JPEG (Barley, Zonate spot, 34kb)

Morphology:
 Teleomorph: not yet found
 Anamorph: On pale brown conidiophores, producing conidia almost straight, pale brown to yellowish brown, clavate to oblong, 39.2-93.4 x 9.5-18.4 um, with 2-6 pseudosepta. Germinating from the tip and often producing secondary conidiophores and conidia.

Conidia

Herbarium specimen in NIAES

Specimen No. Scientific name Host name Host scientificc name Symptoms Geographical origin Collected date Collector
103-2-14 Helminthosporium zonatum Barlry Hordeum vulgare Zonate spot Fukuoka 1930 Kawamura, E.
103-2-15 " " " "
103-2-17 " " " " Himeji, Hyogo

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


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