Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
Volume 73 , Issue 4
Showing 1-7 articles out of 7 articles from the selected issue
Originals
Short Communications
  • C. KAGEYAMA, K. KATO, H. INAGAKI, H. IYOZUMI
    2007 Volume 73 Issue 4 Pages 300-303
    Published: 2007
    Released: December 06, 2007
    JOURNALS FREE ACCESS
    Biophoton emissions from suspension-cultured rice cells were elevated after treatment with N-acetylchitohexaose. We examined whether this elicitor-responsive photon emission was correlated with the generation of reactive oxygen species. The strength of elicitor-responsive photon emissions from cells agreed with the amounts of hydrogen peroxide in cell-cultured medium in a time-course study. Superoxide dismutase treatment did not affect the elicitor-responsive photon emissions, whereas catalase treatment suppressed the emission to 62% of the photon emission from cells in the medium without the enzymes. These results suggest that hydrogen peroxide partially contributes elicitor-responsive photon emissions.
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  • K. MOTOHASHI, T. AOKI, T. KOBAYASHI
    2007 Volume 73 Issue 4 Pages 304-308
    Published: 2007
    Released: December 06, 2007
    JOURNALS FREE ACCESS
    In November 1994, a foot rot disease of Aloe spp. was observed in Okinawa, Japan. Lesions on the lower part of the stem were brown to purplish black, gradually caved in. Finally, the plants withered and died. A fungus belonging to the genus Fusarium was isolated from the lesions. Foot rot symptoms, the same as under natural conditions, appeared within 7 days after inoculation with the Fusarium isolate. A similar Fusarium was reisolated from the diseased plants and was identified as F. dimerum based on morphological and cultural characteristics. This is the first record of this fungal species causing a plant disease.
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