Stress-Induced Sulfide Production by Bacillus subtilis and Bacillus megaterium.

ABSTRACT: It was previously discovered that, in the Gram-negative bacterium Escherichia coli growing on a minimal medium with sulfate, stress-induced growth arrest is accompanied by the release of hydrogen sulfide. The source of the sulfide is the desulfurization of intracellular cysteine as one of the ways of maintaining it at a safe level. The danger of excess cysteine is associated with its participation in the Fenton reaction, leading to the formation of highly toxic hydroxyl radicals. Using electrochemical sensors, we identified stress-induced sulfide production in the Gram-positive bacteria Bacillus subtilis and Bacillus megaterium, growing on a minimal medium with sulfate, and changes in physiological parameters such as Eh, pH, and oxygen and potassium consumption. Sulfid

SUBMITTER: Tyulenev A 

PROVIDER: S-EPMC11433681 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature