Determination and introduction of biological and biochemical features of Pseudomonas fluorescens UTPF5 as plant probiotic bacterial in Iran

Finding new strains of plant probiotic bacteria is an important step in commercialization process. In this study, the biological and biochemical features of Pseudomonas fluorescens UTPF5 is evaluated as an important bacterial in Iran. This strain produces metabolite such as auxin, hydrogen cyanide, siderophore and DAPG, but not phenazin. Biofilm formation, regulator systems examined. Also inhabitation of fungi growth such Rhizoctonia solani is determined. Addition of Fe2 reduces the production of siderophore but increases hydrogen cyanide. The strain UTPF5 produces Gac/Rsm signal and increases hcnA and RsmZ expression. It produces no AHL signal. Biocontrol potential and plant growth promotion in sunflower, millet, canola and bean is described by application of the bacterium in greenhouse trials.