ISSN:
1432-072X
Keywords:
Chromatium vinosum
;
Phototrophic bacteria
;
Polysulfides
;
Polythionates
;
Elemental sulfur
;
Sulfur globules
;
Ion chromatography
;
HPLC
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Cultures of Chromatium vinosum, devoid of sulfur globules, were supplemented with sulfide and incubated under anoxic conditions in the light. The concentrations of sulfide, polysulfides, thiosulfate, polythionates and elemental sulfur (sulfur rings) were monitored for 3 days by ion-chromatography and reversed-phase HPLC. While sulfide disappeared rapidly, thiosulfate and elemental sulfur (S6, S7 S8 rings) were formed. After sulfide depletion, the concentration of thiosulfate decreased fairly rapidly, but elemental sulfur was oxidized very slowly to sulfate. Neither polysulfides (S x 2− ), polythionates (SnO 6 2− , n=4–6), nor other polysulfur compounds could be detected, which is in accordance with the fact that sulfide-grown cells were able to oxidize polysulfide without lag. The nature of the intracellular sulfur globules is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00248423
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