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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
1982-5-27
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pubmed:abstractText |
Studies with 15N demonstrated that the phototrophic bacterium Rhodopseudomonas sphaeroides forma sp. denitrificans strain IL106 cannot assimilate NO-3 but rather denitrifies it to N2. This strain also fixed N2 into cell protein, although nitrogenase activity was partially inhibited in the presence of NO-3. Strain IL106 did not assimilate NO-3, but growing cultures and washed cell suspensions incorporated the tracer from 15NO-3 via denitrification to 15N2 and then via nitrogenase into cell nitrogen. This incorporation was inhibited in cells supplied with NH4+ or in the absence of light, thus confirming the participation of nitrogenase in the assimilation of nitrogen from nitrate. This represents a novel type of N2 recycling in a photodiazotrophic denitrifying bacterium.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0021-9193
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
150
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
100-4
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
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pubmed:year |
1982
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pubmed:articleTitle |
Fixation of dinitrogen derived from denitrification of nitrate in a photosynthetic bacterium, Rhodopseudomonas sphaeroides forma sp. denitrificans.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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