Isolation and Identification of Xanthomonas oryzae pv. oryzae the causal agent of rice bacterial leaf blight and its activities against of six medicinal plants

The antibacterial properties of the leaf extracts of Morinda coreia Buch.-Ham., Datura innoxia Mill., Ocimum tenuiflorum L., Calotropis gigantea (L.) Dryand., Vitex negundo L. and Pongamia pinnata (L.) Pierre and the fruit extract of Morinda coreia and Datura innoxia against the bacteria Xanthomonas oryzae pv. oryzae isolated from Paddy fields. The pathogen Xanthomonas oryzae pv. oryzae commonly causing the bacterial leaf blight disease in rice. The antibacterial assay was determined by well diffusion method. Four different solvents such as hexane, ethyl acetate, ethanol and aqueous were used. Among the four solvents ethyl acetate extracts of all the treated plant leaves and fruits showed maximum significant inhibitory activity followed by ethanol extract, hexane extract and aqueous extract