期刊
BIOLOGICAL CONTROL
卷 110, 期 -, 页码 107-116出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biocontrol.2017.04.012
关键词
Ralstonia solanacearum; Extracellular polysaccharide; SEM; AFM; NMR; Disease incidence
资金
- DBT-MRP [BT/PR10406/SPD/9/1232/2014]
- UGC-MRP [36-281/2008 (SR)]
- UGC-NONNET
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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