Activation of defense-related gene expression and systemic acquired resistance in cucumber mosaic virus-infected tobacco plants expressing the mammalian 2′5′oligoadenylate system

A. Honda, Hideki Takahashi, T. Toguri, T. Ogawa, S. Hase, M. Ikegami, Y. Ehara

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    Tobacco plants expressing the mammalian 2′5′oligoadenylate system (2-5A system) exhibit resistance to cucumber mosaic virus (CMV). Here, to characterize the molecular aspect of the resistance to CMV in 2-5A system-expressing tobaccos, the activation of defense-related genes and systemic acquired resistance (SAR) as the markers for the hypersensitive resistance (HR), were elucidated. Northern hybridization analysis indicated that the expression of four pathogenesis-related (PR) protein genes and five HR-related genes were induced in CMV-infected tobaccos expressing 2-5A system. Furthermore, the induction of SAR against Pseudomonas syringae pv. tabaci as second challenge, was observed on CMV-inoculated tobaccos expressing 2-5A system. These results suggested that the resistance to CMV in tobacco expressing 2-5A system is associated with the establishment of an HR-like response.

    Original languageEnglish
    Pages (from-to)1017-1026
    Number of pages10
    JournalArchives of Virology
    Volume148
    Issue number5
    DOIs
    Publication statusPublished - 2003 May 1

    ASJC Scopus subject areas

    • Virology

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