Induced Resistance to Rice Blast by Antagonistic Bacterium, Serratia marcescens Strain B2

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Abstract

An antagonistic bacterium, Serratia marcescens strain B2, controlled rice blast after being sprayed onto rice phylloplane, as did the bacterial suspension when poured into rhizosphere soil of rice plants. Three days after root treatment, rice blast conidia were sprayed onto rice foliage. A week after pathogen inoculation, rice blast was suppressed and lesions caused by the pathogen decreased in size. Brown deposits were observed around sites of pathogen infection after root treatment. Induced resistance was not associated with an increase in the activitiy of peroxidase, phenylalanine ammonia lyase, tyrosine ammonia lyase, β-1,3-glucanase, β-1,4-glycosidase, N-acetylhexosaminidase or chitinase. However, lipoxygenase levels were elevated after the root treatment with strain B2 following inoculation with the pathogen. Strain B2 was not detected in rice foliage after root treatment. These data suggest that strain B2 induced resistance against rice blast caused by Pyricularia oryzae.

Journal

  • Journal of general plant pathology : JGPP

    Journal of general plant pathology : JGPP 68(2), 177-182, 2002-05-25

    Phytopathological Society of Japan

References:  35

Codes

  • NII Article ID (NAID)
    110002683022
  • NII NACSIS-CAT ID (NCID)
    AA11449093
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13452630
  • Data Source
    CJP  NII-ELS  NDL-Digital 
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