FORMATION OF SULPHUR COMPOUNDS WITH DIFFERENT OXIDATION BACTERIAL CELLS CHLOROBIUM LIMICOLA IМВ K-8

Abstract

Green sulfur bacteria C. limicola IМВ K-8 during cultivation in medium with H2 S accumulate extracellular elemental sulfur. After full use of hydrogen sulfide, sulfur content decreases, and in the medium it is observed the formation of sulfate ion, the maximum amount of which is piled up in 13 days. In experiments with washed cells C. limicola IМВ K-8 it is shown that the concentration of sulfate ion reaches maximum, in twenty hours of incubation both in the light and in darkness. It is established that priority substrate oxidation in the absence of hydrogen sulfide is endogenous glucose and glycogen. The sources of energy under stress conditions are used in the following sequence: glucose – glycogen – elemental sulfur.