Intraspecies variation in the Kanzawa spider mite differentially affects induced defensive response in lima bean plants

Ryo Matsushima, Rika Ozawa, Masayoshi Uefune, Tetsuo Gotoh, Junji Takabayashi

    Research output: Contribution to journalArticlepeer-review

    32 Citations (Scopus)

    Abstract

    The Kanzawa spider mite, Tetranychus kanzawai, is a polyphagous herbivore that feeds on various plant families, including the Leguminacae. Scars made by the mite on lima bean leaves (Phaseolus lunatus) were classified into two types: white and red. We obtained two strains of mites-"White" and "Red"-by selecting individual mites based on the color of the scars. Damage made by the Red strain induced the expression of genes for both basic chitinase, which was downstream of the jasmonic acid (JA) signaling pathway, and acidic chitinase, which was downstream of the salicylic acid (SA) signaling pathway. White strain mites also induced the expression of the basic chitinase gene in infested leaves but they only slightly induced the acidic chitinase gene. The Red genotype was dominant over the White for the induction of the acidic chitinase gene. The amount of endogenous salicylates in leaves increased significantly when infested by Red strain mites but did not increase when infested by White strain mites. JA and SA are known to be involved in the production of lima bean leaf volatiles induced by T. urticae. The blend of volatiles emitted from leaves infested by the Red strain were qualitatively different from those infested by the White strain, suggesting that the SA and JA signaling pathways are differently involved in the production of lima bean leaf volatiles induced by T. kanzawai of different strains.

    Original languageEnglish
    Pages (from-to)2501-2512
    Number of pages12
    JournalJournal of Chemical Ecology
    Volume32
    Issue number11
    DOIs
    Publication statusPublished - Nov 2006

    Keywords

    • Herbivore-induced plant volatiles (HIPVs)
    • Induced indirect defense
    • Jasmonic acid
    • Phaseolus lunatus
    • Salicylic acid
    • Tetranychus kanzawai

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Biochemistry

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