Plant Growth Promoting Rhizobacteria: Their potential in sustainable Agriculture

Plant growth-promoting rhizobacteria (PGPR) are bacteria that inhabit plant roots and raise plant development through diverse direct and indirect mechanisms, including biological nitrogen fixation, the production of 1-amino-cyclopropane-1-carboxylate deaminase (ACC), siderophore synthesis, production of phytohormone and phosphate solubilization. Researchers are engaged in elucidating the role of PGPR in plant growth-promoting mechanisms. The potential of PGPR in agriculture is progressively rising as it presents an appealing option to chemical fertilizers, pesticides and other additives. These microbes exhibit both antagonistic and synergistic interactions with other soil microbes, which may benefit sustainable agriculture by primarily relying more on biological than chemical processes to sustain soil health and promote plant growth in stressful conditions. This paper thoroughly examines the recent efficacy and advancement of PGPR in agricultural enhancement, along with their mechanisms of action and features that promote plant growth.