PAH Impact on the Sediment Bacterial Community

2009 ◽  
pp. 75-75-15
Author(s):  
SF Pikett ◽  
S McEldowney ◽  
B Knights
Keyword(s):  
Bacterial Community ◽  
Sediment Bacterial Community

Macrophyte identity shapes water column and sediment bacterial community

Hydrobiologia ◽  
2019 ◽  
Vol 835 (1) ◽  
pp. 71-82 ◽  
Author(s):  
Yanran Dai ◽  
Juan Wu ◽  
Fei Zhong ◽  
Naxin Cui ◽  
Lingwei Kong ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Water Column ◽  
Sediment Bacterial Community

scholarly journals Propionate Converting Anaerobic Microbial Communities Enriched from Distinct Biogeochemical Zones of Aarhus Bay, Denmark under Sulfidogenic and Methanogenic Conditions

2020 ◽  
Vol 8 (3) ◽  
pp. 394 ◽  
Author(s):  
Derya Ozuolmez ◽  
Alfons J. M. Stams ◽  
Caroline M. Plugge
Keyword(s):  
Bacterial Community ◽  
Sulfate Reduction ◽  
Marine Sediments ◽  
Archaeal Community ◽  
Community Analysis ◽  
Different Temperatures ◽  
Propionate Degradation ◽  
Whole Sediment ◽  
The Relationship ◽  
Sediment Bacterial Community

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 the dominance of Desulfobacteraceae and Desulfobulbaceae members in sulfate-amended slurries incubated at 25°C and 10°C. Cryptanaerobacter belonging to the Peptococcaceae family dominated sulfate-free methanogenic slurries at 25°C, whereas bacteria related to Desulfobacteraceae were dominant at 10°C. Archaeal community analysis revealed the 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 degraded propionate in syntrophic association with methanogens.

Sign in / Sign up

Export Citation Format

Share Document