Highlights Fluorescent and non-fluorescent species of Pseudomonas are important for plant growth promotion, phytopathogenic control and plant disease management. Pseudomonas belong to Pseudomonadaceae family (10 groups on the basis of rRNA-DNA hybridization) classified into 6-subgroups of rRNA gene homology and RFLP. Pseudomonas species produce antagonistic mechanism such as ISR and compounds like cell wall degradation enzymes, and antibiotics to maintain a mutualistic relationship with the associated plant. Pseudomonas sp. synthesize auxins having properties similar to phytohormones like IAA, which act as signaling molecules for regulating plant growth.

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