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

Avinash, P. and Grice, I. Darren and Vinay Kumar, K. S. and Sadashiva, M. P. and Shankara, H. N. and Umesha, S. (2017) Extracellular polysaccharide from Ralstonia solanacearum; a strong inducer of eggplant defense against bacterial wilt. Biological Control, 110. 107 - 116. ISSN 1090-2112

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Official URL: https://doi.org/10.1016/j.biocontrol.2017.04.012

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 induces significant up-regulation of guaiacol peroxidase and ascorbate peroxidase defense genes, providing screen resistance against bacterial wilt.

Item Type: Article
Uncontrolled Keywords: Extracellular polysaccharide, SEM, AFM, NMR, Disease incidence
Subjects: B Life Science > Biotechnology
Divisions: Department of > Biotechnology
Depositing User: MUL SWAPNA user
Date Deposited: 21 Jun 2019 10:16
Last Modified: 28 Jun 2019 10:05
URI: http://eprints.uni-mysore.ac.in/id/eprint/3615

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