Metabolites of PGPR for Chemical Signaling Pathway

Plant growth-promoting rhizobacteria (PGPRs) are the bacteria in the rhizosphere that can promote a plant’s growth through different mechanisms. Microorganisms are likely to create growth-promoting chemicals in huge numbers, which could have an indirect impact on the overall morphology of plants. These are common soil microbes that colonize plant roots and improve plant health. The use of PGPR in the growing of crops can minimize the use of agrochemicals and can promote a sustainable food industry. In the rhizosphere, rhizobacteria not only benefit from nutrients secreted by plant roots but also positively impact the plant both directly and indirectly, which results in encouraging plant growth. For a range of crop plants, PGPRs are widely employed as biofertilizers to enhance soil nutrition. The relationship between a plant and PGPR for chemical signaling molecules is not understood clearly just like other beneficial plant–microbe interactions. Metabolites are small molecules that are produced during the process of metabolism, which is the set of chemical reactions that occur within cells to maintain life. These molecules are involved in various biochemical pathways and play crucial roles in the functioning of cells, tissues, and organs. Metabolites can be classified into different groups based on their chemical nature and function.