Plant Growth-Promoting Bacteria as Bioinoculants: Attributes and Challenges for Sustainable Crop Improvement

Plant growth-promoting bacteria (PGPB) are excellent biocontrol agents and stimulators of plant growth, nutrition, production. Therefore, these plant-associated considered an alternative to reduce or eliminate the use toxic agrochemicals. In this work, we review current state beneficial mechanisms (direct indirect), including production antibiotic compounds enzymes, facilitation resource acquisition, stimulating phytohormones/metabolites. Some aspects formulation technology bioinoculant efficiency diverse PGPBs (e.g., rhizobacteria, phyllobacteria endophytic bacteria) in field also discussed. However, commercialization application biological agriculture occur mainly developed countries, limiting their success developing regions. The possible causes delay bioinoculants for sustainable plausible solutions discussed study. Finally, is currently a priority agriculture.