Plant–Microbe Interactions for Enhanced Plant Growth and Stress Resilience

The microbiome has emerged as a significant factor in understanding plant adaptation, impacting overall plant health and resilience. This chapter notably examines the potential role of environmentally friendly plant growth-promoting rhizobacteria (PGPR) in enhancing crop yields and mitigating stress-related challenges. It explores the complex dynamics that govern interactions between plants and microorganisms, emphasizing their crucial roles in promoting plant growth and enhancing stress tolerance, particularly in challenging environmental conditions. Specifically, this study investigates the complex metabolic processes of rhizobacteria, with a particular emphasis on the crucial roles of polyamines and proline as effective compounds produced by rhizobacteria. These compounds stimulate plant growth and improve stress responses. Furthermore, it explores the capacity of PGPR to produce phytohormones, such as indole-3-acetic acid (IAA), and to synthesize exopolysaccharides to enhance plant growth. This study highlights the catalytic function of ACC deaminase in influencing plant growth and enhancing stress resistance. ACC deaminase plays a crucial role in enhancing plant resilience against abiotic stress in various plant species. This chapter offers valuable insights into the network of interactions between plants and microbes, providing potential solutions for enhancing crop performance under challenging stress conditions and promoting sustainable agricultural practices.