Most tropical and subtropical soils are deficient in P bioavailable, so the use of plant growth promoting bacteria, mainly phosphate solubilizing, can reduce the use of chemical fertilizers. The aim of this paper is to provide a current overview about the representative genus and mechanisms of action of phosphate solubilizing bacteria (BSF), and to study the potential of isolated promise in economically important crops. The use of bacterial genera with the greatest potential for use as Pseudomonas and Bacillus joined isolates promising Azospirillum and Herbaspirilum in crops such as rice and coffee would reduce long-term use of chemicals in agriculture and develop agronomic strategies that preserve the environment. The success of these bacterial inoculants depends on the selection of efficient strains native soil type, its ability to colonize the rhizosphere and maintain biological activity.