The Plant Healthy and Safety Guards Plant Growth Promoting Rhizo Bacteria (PGPR)

Abstract

Plant growth is influenced by a variety of abiotic and biotic factors. To survive a Complex and hostile environment, plants have evolved a series of inducible defense Mechanisms that enable them to activate appropriate defense responses upon Pathogen and abiotic stress factors attacking. Besides, rhizosphere bacteria also play a very important role in maintaining healthy plant growth process, such as PGPR strains. Bacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizo bacteria (PGPR). As the name suggests, PGPR strains have a strong role in promoting the growth of plants in different ways. In addition, they also can help plants resist external environmental stress, such as pathogens, pest, and Abiotic stress. Their effects can occur via directly antagonism to pathogens or by induction of systemic resistance against pathogens, agricultural pest or abiotic stress throughout the entire plant. There have also been a number of studies in recent years aimed at understanding of how the PGPR strains promote the plant growth and help plant survive in the soil. In this article, we review the function and the mechanisms of PGPR in regulation plant growth and fighting with the environment.