7, 8- Dihydroxyflavone, An Effective Natural Product Reduce Ralstonia solanacearum Populations and Control Tomato Bacterial Wilt

DOI: 10.18805/IJARe.A-5479    | Article Id: A-5479 | Page : 731-737
Citation :- 7, 8- Dihydroxyflavone, An Effective Natural Product Reduce Ralstonia solanacearum Populations and Control Tomato Bacterial Wilt.Indian Journal Of Agricultural Research.2020.(54):731-737
P. Nandhakumar, V.S. Vasantha, P. Veilumuthu, Godwin Christopher vasantham999@yahoo.co.in
Address : Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625 021, Tamilnadu, India. 
Submitted Date : 14-12-2019
Accepted Date : 2-04-2020

Abstract

In this study, 7, 8- dihydroxyflavone (DHF) was isolated first time from medicinal plant Oroxylum indicum and its antibacterial potential against plant pathogen Ralstonia solanacearum was determined. The minimum inhibitory and bactericidal concentrations of DHF were 20 µg/mL and 80 µg/mL respectively. The biofilm formation and inhibition of DHF against R.solanacearum was investigated via scanning electron microscopy indicated that destruction of the cell wall. The inhibition of biofilm formation and molecular assays revealed that DHF binds lumen periplasm side of the outer membrane protein (EpsA) was identified. Moreover, DHF effectively reduced the bacterial wilt disease and control efficiency is as high as 89.10% at nine days after inoculation. Altogether, the antibacterial potential of DHF against R.solanacearum displayed effective agent can attenuates bacterial wilt disease in tomato plant.

Keywords

7 8 -dihydroxyflavone Antibacterial activity Biofilm Capsular polysaccharide Ralstonia solanacearum Tomato bacterial wilt

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