Published Paper Details:

Plant growth promoting bacteria are known to influence the plant growth by various direct or indirect mechanisms. In search of efficient PGPR strains with multiple activities, a total of 10 bacterial isolates belonging to Bacillus species isolated from chilli rhizosphere, Guntur district of Andhra Pradesh, India. Out of ten only one isolate Bacillus sp. PB-3 showed potential activity of producing IAA, Gibberellic acid production, Siderophore production. Bacillus sp. PB-3 showed the maximum IAA (85 �g/ml ) and Gibberellic acid productions 52 �g/ml were observed. An orange halo appears around the Bacillus species on CAS agar media indicates the siderophore production. The optimum conditions for siderophore production in Bacillus sp. PB-3 was selected for this study. CAS medium was supplemented with mannitol (18.6 �g/ml) and Urea (18.4 �g/ml) was used as carbon and nitrogen sources showed maximum amount of siderophores. These plant growth promoting abilities can make this isolate a potential PGPR candidate for its application in sustainable agriculture.