Osmotic stress adaptations in rhizobacteria

摘要: Rhizobacteria have been reported to be beneficial the plants in many different ways. Increasing salinity coastal agricultural zones has shown a threat plant and microbial life area. Exposure of microorganisms high-osmolality environments triggers rapid fluxes cell water along osmotic gradient out cell, thus causing reduction turgor dehydration cytoplasm. The developed various adaptations counteract outflow water. first response up shifts resulting efflux cellular is uptake K⁺ cells start accumulate compatible solutes. Yet another mechanism by altering envelope composition changes proteins, periplasmic glucans, capsular, exo lipopolysaccharides. Bacteria also initiate program gene expression stress high NaCl concentrations, which are manifested as set proteins produced increased amounts stress. Genomics, transcriptomics proteomics approaches revealed key components molecular basis bacteria salt adaptation. Understanding mechanisms osmo-adaptation rhizobacteria would relevant from an ecological applicative point view.