Overgrowing population and exploitation of land and natural resources have created a negative impact on agricultural productivity. In order to combat the current situation, it has become mandatory to look for microbial treatment methods. Plant growth promoting microorganisms (PGPMs) have proved themselves of great importance when it comes to sustainable agriculture. PGPMs help in the plant growth promotion by different mechanisms. This review study shows different possible contributions of various PGPMs in the advancement of agricultural crop production.

Rhizobacteria, actinomycete, fungus, arbuscular mycorrhizal fungi and endophytes, they employ different mechanisms to restore plant growth and nutrition. PGPMs also help in protection from phytopathogens and also help in growth promotion. PGPMs and green fertilizer show promising results in the field and can be a solution to the upcoming problem of food shortage.