[Use of molecular sulfur as an agent oxidizing H2 by a facultative anaerobic Pseudomonas strain].

Pseudomonas Z-731, subspecies P. mendocina, was grown under anaerobic conditions in the atmosphere of hydrogen. Apart from hydrogen nitrate reduction and Fe3+ reduction, the organism was able to reduce S0, S2O3 and SO3 with the formation of H2S. The reduction of S0 with hydrogen was shown to be typical of certain facultative anaerobic microorganisms.