Anaerobic Oxidation f Dimethylsul¢De AndmethanethiolIn Mangrove Sediments s Dominated By Sulfate-Reducing Bacteria

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dc.contributor.authorLyimo, Thomas J.
dc.contributor.authorPol, Arjan
dc.contributor.authorHarhangi, Harry R.
dc.contributor.authorJetten, Mike S. M.
dc.contributor.authorOp den Camp, Huub J. M.
dc.date.accessioned2016-06-18T17:40:57Z
dc.date.available2016-06-18T17:40:57Z
dc.date.issued2009-08
dc.description.abstractThe oxidation of dimethylsulfide and methanethiol by sulfate-reducing bacteria (SRB) was investigated in Tanzanian mangrove sediments. The rate of dimethylsulfide and methanethiol accumulation in nonamended sediment slurry (control) incubations was very low while in the presence of the inhibitors tungstate and bromoethanesulfonic acid (BES), the accumulation rates ranged from 0.02-0.34 to 0.2-0.4 nmol g FW sediment(-1) h(-1), respectively. Degradation rates of methanethiol and dimethylsulfide added were 2-10-fold higher. These results point to a balance of production and degradation. Degradation was inhibited much stronger by tungstate than by BES, which implied that SRB were more important. In addition, a new species of SRB, designated strain SD1, was isolated. The isolate was a short rod able to utilize a narrow range of substrates including dimethylsulfide, methanethiol, pyruvate and butyrate. Strain SD1 oxidized dimethylsulfide and methanethiol to carbon dioxide and hydrogen sulfide with sulfate as the electron acceptor and exhibited a low specific growth rate of 0.010 +/- 0.002 h(-1), but a high affinity for its substrates. The isolated microorganism could be placed in the genus Desulfosarcina (the most closely related cultured species was Desulfosarcina variabilis, 97% identity). Strain SD1 represents a member of the dimethylsulfide/methanethiol-consuming SRB population in mangrove sediments.en_US
dc.identifier.citationLyimo, T., Pol, A., Harhangi, H., Jetten, M. and Op den Camp, H. (2009). Anaerobic oxidation of dimethylsulfide and methanethiol in mangrove sediments is dominated by sulfate-reducing bacteria. FEMS Microbiology Ecology, 70(3), pp.483-492.en_US
dc.identifier.doi10.1111/j.1574-6941.2009.00765.x
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2565
dc.language.isoenen_US
dc.subjectDimethylsulfideen_US
dc.subjectMethanethiolen_US
dc.subjectSulfate-reducingbacteriaen_US
dc.subjectMangrove sedimenen_US
dc.titleAnaerobic Oxidation f Dimethylsul¢De AndmethanethiolIn Mangrove Sediments s Dominated By Sulfate-Reducing Bacteriaen_US
dc.typeJournal Article, Peer Revieweden_US
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