Abstract
The effect of thiosulfate on dark assimilation of carbon dioxide in shallow marine environments was investigated in order to explain the recent discovery of bacterial thiosulfate oxidation in aerobic, open ocean seawater. The results demonstrate that the potential exists for microbial thiosulfate oxidation to increase both dark assimilation of carbon dioxide and the utilization of organic compounds in the sea. Thiosulfate-stimulated microbial activity may be caused not only by chemoautotrophic sulfur bacteria, but also by heterotrophic species which oxidize thiosulfate to tetrathionate. Measurements of dark assimilation of carbon dioxide made at different incubation times indicate that great care must be taken both in experimental procedure and in interpretation of results obtained with the dark assimilation technique.
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Tuttle, J.H., Jannasch, H.W. Thiosulfate stimulation of microbial dark assimilation of carbon dioxide in shallow marine waters. Microb Ecol 4, 9–25 (1977). https://doi.org/10.1007/BF02010426
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DOI: https://doi.org/10.1007/BF02010426