ABSTRACT
The capacity of organisms to respond to uctuations in salt and/or osmotic concentrations is important to survive in a great variety of habitats, particularly in aquatic environments. Generally, cells try to keep their internal osmotic composition and turgor pressure constant; therefore, an increase or a decrease in external salt concentration and/or water availability poses a challenge for the cellular metabolism and for the survival of the cells. To avoid negative effects, microorganisms have developed two effective strategies for the acclimation to changing salt concentrations: the “salt-instrategy” and the “salt-out-strategy” [1,2].
