Source:http://linkedlifedata.com/resource/pubmed/id/16345815
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
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| pubmed:dateCreated |
2010-6-25
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| pubmed:abstractText |
The addition of 20 mM MoO(4) (molybdate) to a reduced marine sediment completely inhibited the SO(4) reduction activity by about 50 nmol g h (wet sediment). Acetate accumulated at a constant rate of about 25 nmol g h immediately after MoO(4) addition and gave a measure of the preceding utilization rate of acetate by the SO(4)-reducing bacteria. Similarly, propionate and butyrate (including isobutyrate) accumulated at constant rates of 3 to 7 and 2 to 4 nmol g h, respectively. The rate of H(2) accumulation was variable, and a range of 0 to 16 nmol g h was recorded. An immediate increase of the methanogenic activity by 2 to 3 nmol g h was apparently due to a release of the competition for H(2) by the absence of SO(4) reduction. If propionate and butyrate were completely oxidized by the SO(4)-reducing bacteria, the stoichiometry of the reactions would indicate that H(2), acetate, propionate, and butyrate account for 5 to 10, 40 to 50, 10 to 20, and 10 to 20%, respectively, of the electron donors for the SO(4)-reducing bacteria. If the oxidations were incomplete, however, the contributions by propionate and butyrate would only be 5 to 10% each, and the acetate could account for as much as two-thirds of the SO(4) reduction. The presence of MoO(4) seemed not to affect the fermentative and methanogenic activities; an MoO(4) inhibition technique seems promising in the search for the natural substrates of SO(4) reduction in sediments.
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| pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-16345535,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-434807,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-4365468,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-4546838,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-5419259,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-678014,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-678015,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-697354,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-843166,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-848951,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-860983,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16345815-879775
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jul
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| pubmed:issn |
0099-2240
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
42
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
5-11
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| pubmed:dateRevised |
2010-9-20
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| pubmed:year |
1981
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| pubmed:articleTitle |
Volatile Fatty acids and hydrogen as substrates for sulfate-reducing bacteria in anaerobic marine sediment.
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| pubmed:affiliation |
Institute of Ecology and Genetics, University of Aarhus, DK-8000 Aarhus C, Denmark.
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| pubmed:publicationType |
Journal Article
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