PGPR: A Powerful Ally for Sustainable Agriculture and Soil Improvement
Plants are surrounded by and contain abundant microorganisms. Some of these are beneficial plant growth-promoting bacteria (PGPB), which form a mutualistic symbiotic relationship with plants and promote their growth and development. These microorganisms are mainly divided into rhizosphere growth-promoting bacteria, phyllosphere growth-promoting bacteria, and endophytic growth-promoting bacteria. The concept of “rhizosphere” was first proposed by