Effects of colonization of a bacterial endophyte, Azospirillum sp. B510, on disease resistance in tomato

Moeka Fujita, Miyuki Kusajima, Yasuko Okumura, Masami Nakajima, Kiwamu Minamisawa, Hideo Nakashita

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)


    A plant growth-promoting bacteria, Azospirillum sp. B510, isolated from rice, can enhance growth and yield and induce disease resistance against various types of diseases in rice. Because little is known about the interaction between other plant species and this strain, we have investigated the effect of its colonization on disease resistance in tomato plants. Treatment with this strain by soil-drenching method established endophytic colonization in root tissues in tomato plant. The endophytic colonization with this strain-induced disease resistance in tomato plant against bacterial leaf spot caused by Pseudomonas syringae pv. tomato and gray mold caused by Botrytis cinerea. In Azospirillum-treated plants, neither the accumulation of SA nor the expression of defense-related genes was observed. These indicate that endophytic colonization with Azospirillum sp. B510 is able to activate the innate immune system also in tomato, which does not seem to be systemic acquired resistance.

    Original languageEnglish
    Pages (from-to)1657-1662
    Number of pages6
    JournalBioscience, Biotechnology and Biochemistry
    Issue number8
    Publication statusPublished - 2017


    • Azospirillum
    • Disease resistance
    • Endophyte
    • Solanum lycopersicum L.
    • Tomato

    ASJC Scopus subject areas

    • Biotechnology
    • Analytical Chemistry
    • Biochemistry
    • Applied Microbiology and Biotechnology
    • Molecular Biology
    • Organic Chemistry


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