Sustainable agriculture is a global imperative to meet the challenges of food security and environmental protection. Plant Growth-Promoting Bacteria (PGPB) have emerged as key players in sustainable agricultural practices due to their diverse roles in enhancing plant growth, nutrient uptake, stress tolerance, and disease resistance. This review explores the diverse facts about PGPB and their potential applications in sustainable agriculture. The review begins by elucidating the mechanisms underlying PGPB-plant interactions, including phytohormone production, nutrient solubilization, and biocontrol activities. This review delves into the intricate signalling networks involved in PGPB-induced systemic resistance. In addition, this review discusses the pivotal role of PGPBs in mitigating abiotic stresses such as drought, salinity, and heavy metal toxicity, highlighting their contributions to climate-resilient agriculture. The ecological implications of PGPB application in sustainable agriculture are discussed, emphasizing the need for responsible and environmentally friendly practices. Furthermore, the use of PGPB for sustainable agriculture holds great promise for addressing the challenges of food security and environmental sustainability. In addition, this review provides a comprehensive overview of the multiple roles, mechanisms of action, and potential applications of PGPB, while emphasizing the importance of responsible and environmentally sound approaches in realizing the full potential of PGPB for a resilient and sustainable agricultural future.

Millets are resilient cereals that can offer a cost-effective and nutrient-rich alternative and ensure food security, because they include minerals, protein, and antioxidants. The need to revitalise millet crops is highlighted by the fact that, as whole grains, distinct kinds and levels of fibre are available from each millet variety. However, this fibre plays an important role in the regulation of intestinal function, blood sugar level, and lipid metabolism. IYM 2023, the International Year of Millets 2023 was proclaimed at its 75^th session by the United Nations General Assembly, in collaboration with the FAO. As the prevalence of under- and over-nutrition rises, so does the urgency of switching to diets that incorporate millets because of their health benefits, and low cost. However, India has committed to promoting itself as the 'Global Hub for Millets' and making 2023's International Year of Millets a 'People's Movement'. The Millet Revolution is motivated by initiatives to resuscitate ancient agricultural practises and provide assistance for small-scale farmers, as well as by rising awareness of the health and environmental advantages of millets. Efforts to revitalise traditional agricultural practises and provide assistance for small-scale farmers are major factors in the revolution of millet cultivation. However, it is considered as an answer to the problems of both public health and sustainable agriculture.