Blast pathogen of <i>Festuca arundinacea</i> found in Miyagi Prefecture, northern Honshu island, Japan.

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  • SUZUKI T.
    United Graduate School of Agricultural Sciences, Iwate University Miyagi Prefectural Furukawa Agricultural Experiment Station
  • OHTAKE H.
    Faculty of Agriculture, Yamagata University
  • HASE S.
    Faculty of Agriculture, Yamagata University
  • NAMAI T.
    Faculty of Agriculture, Yamagata University

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  • 宮城県で採集したオニウシノケグサのいもち病菌の特徴
  • ミヤギケン デ サイシュウ シタ オニウシノケグサ ノ イモチ ビョウキン ノ トクチョウ
  • Blast pathogen of Festuca arundinacea found in Miyagi Prefecture, northern Honshu island, Japan.

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Abstract

The pathogenicity and mycological aspects of blast fungi isolated from Festuca arundinacea in Miyagi Prefecture, northern Japan, were studied. They typically formed elliptical lesions with pointed ends, a whitish-grey center and reddish-brown margin on their host and on Italian ryegrass, but they did not form lesions on rice or crabgrass. They produced the dihydropyriculol, but not the pyrichalasin H which is characteristic toxin of crabgrass blast fungi. The RFLP band patterns of the β-tubulin gene from the isolates corresponded to those of Pyricularia oryzae; no products were amplified by Digitaria-specific primers. Thus, isolates from F. arundinacea were assessed to be P. oryzae.<br>

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