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Identification of population dynamics in sulfate-reducing consortia on exposure to sulfate
Date
2006-12-01
Author
İçgen, Bülent
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The microbial population structure and function of a mixed culture of sulfate-reducing bacteria (SRB) maintained in anaerobic continuous bioreactors were tracked before and after a major perturbation, which involved the addition of sulfate to the influent of a bioreactor when operated at steady state at 35 degrees C, pH 7.8 and a 2.5 day residence time with feed stream containing 10 and 15 kg m(-3) sulfate as terminal electron acceptor and 19.6 and 29.4 kg m(-3) 4 ethanol as carbon source and electron donor, respectively. The population structure determined by fluorescence in situ hybridization (FISH), by using 16S rRNA-targeted oligonucleotide probes, was linked to the functional performance of the SRB in the reactor. Hybridization analysis using these 16S rRNA-targeted oligonucleotide probes revealed that a high concentration of sulfate was toxic for Desulfobacterium and Desulfobulbus. On the other hand, the Desulfococcus group was found to be the most dominant group of SRB in the feed stream containing 15 kg m(-3) sulfate as terminal electron acceptor and 29.4 kg m(-3) ethanol as carbon source and electron donor. (c) 2006 Published by Elsevier Masson SAS.
Subject Keywords
Molecular Biology
,
Microbiology
,
General Medicine
URI
https://hdl.handle.net/11511/37022
Journal
Research in Microbiology
DOI
https://doi.org/10.1016/j.resmic.2006.08.003
Collections
Department of Environmental Engineering, Article
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The shift in the community structure of a mixed culture of sulfate-reducing bacteria (SRB) at 0.5, 0.75, 1, and 1.5 kg m(-3) sulfide loadings was investigated in an anaerobic continuous bioreactor used for treatment of sulfate-containing wastewater by fluorescence in situ hybridization (FISH), using SRB species-specific and group-specific 16S rRNA-targeting probes. Hybridization analysis using these 16S rRNA-targeted oligonucleotide probes revealed that sulfide was toxic for Desulfonema, Desulfobulbus spp. ...
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B. İçgen, “Identification of population dynamics in sulfate-reducing consortia on exposure to sulfate,”
Research in Microbiology
, pp. 922–927, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37022.