Ecophysiological evidence that Achromatium oxaliferum is responsible for the oxidation of reduced sulfur species to sulfate in a freshwater sediment

Article Abstract:

The correlation between the population of Achromatium oxaliferum and sulfate production in sodium molybdenate-treated sediment cores was analyzed to determine the role of the microbe in sedimentary biogeochemistry. Analysis of sulfate accumulation in sediment cores containing Achromatium oxaliferum indicated the role of the sediment-dwelling bacterium in the oxidation of reduced sulfur. Furthermore, the microbe belonged was a member of gamma-proteobacteria with physiologies that are based on sulfur oxidation.

Biodegradation, Microbiological synthesis, Sulfur bacteria, Biogeochemical cycles

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Use of combined microautoradiography and fluorescence in situ hybridization to determine carbon metabolism in mixed natural communities of uncultured bacteria from the genus Achromatium

Article Abstract:

Research reveals that Achromatium bacterial species can use inorganic bicarbonate and acetate compounds, in addition to the already known organic compounds, as carbon sources. Data indicate that the bacteria probaly exhibit a range of physiologic adaptations.

Health aspects, Bacterial growth, In situ hybridization, Carbon compounds

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Substrate uptake by uncultured bacteria from the genus Achromatium determined by microautoradiography

Article Abstract:

Research conducted on the use of microautoradiography to study carbon and sulfur metabolism in freshwater bacteria from genus Achromatium is presented. Results reveal physiological diversity in natural communities of Achromatium.

Analysis, Environmental aspects, Metabolism, Carbon, Sulfur, Freshwater ecology, Microbiological research

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