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  • Extracellular polysaccharide from Ralstonia solanacearum; A strong inducer of eggplant defense against bacterial wilt

    Author(s)
    Prakasha, Avinash
    Grice, I Darren
    Kumar, KS Vinay
    Sadashiva, MP
    Shankar, HN
    Umesha, S
    Griffith University Author(s)
    Grice, Darren D.
    Year published
    2017
    Metadata
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    Abstract
    Ralstonia solanacearum a phytopathogenic bacterium produces virulence factor via production of extracellular polysaccharides (EPS). We have isolated EPS from R. solanacearum and characterized this by AFM, SEM, FTIR, LC-MS and NMR spectroscopy. Interestingly, the result showed pore size distribution, topology, rheological and pseudoplastic behaviour of EPS and three major monosaccharides, glucuronic acid, N-acetylglucosamine and glucose associated with EPS. Eggplant treated with intact crude EPS showed a significant 51% decrease in bacterial wilt incidence for both in vitro and greenhouse conditions. In eggplant cultivars EPS ...
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    Ralstonia solanacearum a phytopathogenic bacterium produces virulence factor via production of extracellular polysaccharides (EPS). We have isolated EPS from R. solanacearum and characterized this by AFM, SEM, FTIR, LC-MS and NMR spectroscopy. Interestingly, the result showed pore size distribution, topology, rheological and pseudoplastic behaviour of EPS and three major monosaccharides, glucuronic acid, N-acetylglucosamine and glucose associated with EPS. Eggplant treated with intact crude EPS showed a significant 51% decrease in bacterial wilt incidence for both in vitro and greenhouse conditions. In eggplant cultivars EPS induces significant up-regulation of guaiacol peroxidase and ascorbate peroxidase defense genes, providing screen resistance against bacterial wilt.
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    Journal Title
    Biological Control
    Volume
    110
    DOI
    https://doi.org/10.1016/j.biocontrol.2017.04.012
    Subject
    Zoology
    Zoology not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/341307
    Collection
    • Journal articles

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