Review on Mechanism of Mineral Phosphate Solubilization in Fast-Growing Rhizobia Based on Sugar Utilization

Review on Mechanism of Mineral Phosphate Solubilization in Fast-Growing Rhizobia Based on Sugar Utilization

Plant Growth Promoting Rhizobacteria (PGPR) were used in many previous studies for increasing plant growth andproductivity. Some mechanisms were used to enhance the soil productivity such as mineral phosphate solubilization, siderophoreproduction, biological nitrogen fixation, induced systemic resistance and indole acetic acid (IAA) production. Some of the relatedresearches adopted the phosphate solubilization in organisms which was repressed in the presence of succinate resembling thephenomenon of catabolite repression. In addition, the sugar utilization pattern (monosaccharide, disaccharide, and trisaccharide),organisms showed the characteristics like slow and fast-growing rhizobia respectively. Whole-genome sequencing has been used foridentifying unique genes in Fast-growing Rhizobia. Existing literature in PGPR studies has been considered and mechanisms forincreasing plant growth and productivity have been identified. The review tries to analyse the mechanism of phosphate solubilizationand sugar utilization in fast growing Rhizobia. On the contrary, repression due to various carbon sources such as succinate has beenreported, leading to succinate mediated catabolite repression.