Fig 1

The core of osmostress response of Bacilli. Schematic overview of the initial and sustained cellular stress responses to high salinity through the uptake of K⁺, synthesis and import of various compatible solutes and the active export of K⁺ and Na⁺ ions. Non-selective expulsion of ions and organic solutes occur in response to sudden osmotic downshifts via mechanosensitive channels (Msc)