Arid and semiarid regions are illustrious for stressed atmosphere primarily attributable to erratic precipitation, low fertility of soil, leading to low crop productivity with high uncertainty within the field conditions. In arid and semiarid areas all stresses preponderantly drought limits the expansion and yield of crops significantly inflicting the foremost fatal economic losses in agriculture. This form of abiotic stress, have an effect on the plant water relation at cellular and whole plant level, decrease N and C metabolism that result in modulate plant physiology and chemical process activity. | Sundry of PGPR as a potential source of plant growth promotion in arid and semi-arid regions