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- W3082431919 abstract "The relationship between predominant physiological types of prokaryotes in marine sediments and propionate degradation through sulfate reduction, fermentation, and methanogenesis was studied in marine sediments. Propionate conversion was assessed in slurries containing sediment from three different biogeochemical zones of Aarhus Bay, Denmark. Sediment slurries were amended with 0, 3 or 20 mM sulfate and incubated at 25°C and 10°C for 514 - 571 days. Methanogenesis in the sulfate zone and sulfate reduction in the methane zone slurries was observed. Both processes occurred simultaneously in enrichments originating from samples along the whole sediment. Bacterial community analysis revealed dominance of Desulfobacteraceae and Desulfobulbaceae members in sulfate-amended slurries incubated at 25°C and 10°C. Cryptanaerobacter belonging to Peptococcaceae family dominated sulfate-free, methanogenic slurries at 25°C, whereas bacteria related to Desulfobacteraceae were dominant at 10°C. Archaeal community analysis revealed prevalence of different genera belonging to Methanomicrobiales in slurries incubated at different temperatures and amended with different sulfate concentrations. Methanosarcinaceae were only detected in the absence of sulfate. In summary, Aarhus Bay sediment zones contain sulfate reducers, syntrophs and methanogens interacting with each other in the conversion of propionate. Our results indicate that in Aarhus Bay sediments Cryptanaerobacter degrades propionate in syntrophic association with methanogens." @default.
- W3082431919 created "2020-09-08" @default.
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- W3082431919 date "2020-01-01" @default.
- W3082431919 modified "2023-09-23" @default.
- W3082431919 title "Archaeal diversity in sediment slurries degrading butyrate or propionate derived from Aarhus Bay" @default.
- W3082431919 hasPublicationYear "2020" @default.
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