Characterization of the bioactive metabolite from a plant growth promoting rhizobacteria Pseudomonas aeruginosa VRKK1 and exploitation of antibacterial behaviour against Xanthomonas campestris a causative agent of bacterial blight disease in cowpea

A plant growth-promoting rhizobacterial strain B6 was isolated from a Cowpea rhizosphere soil in the Vellodu village of Dindugul district, Tamil Nadu, India. It could be identified as Pseudomonas aeruginosa VRKK1 through biochemical and 16S rDNA gene sequencing. The plant growth promoting behaviour already exhibited by this strain, further its bioactive metabolite extracted using chloroform. Crude extract and column purification study reveals...