Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
1998-7-30
pubmed:abstractText
Recent studies suggested that the daily cycle of nitrogen fixation activity in the marine filamentous nonheterocystous cyanobacterium Trichodesmium sp. is controlled by a circadian rhythm. In this study, we evaluated the rhythm of nitrogen fixation in Trichodesmium sp. strain IMS 101 by using the three criteria for an endogenous rhythm. Nitrogenase transcript abundance oscillated with a period of approximately 24 h, and the cycle was maintained even under constant light conditions. The cyclic pattern of transcript abundance was maintained when the culture was grown at 24 and 28.5 degrees C, although the period was slightly longer (26 h) at the higher temperature. The cycle of gene expression could be entrained with light-dark cues. Results of inhibitor experiments indicated that transcript abundance was regulated primarily by transcription initiation, rather than by degradation. The circadian rhythm, the first conclusively demonstrated endogenous rhythm in a filamentous cyanobacterium, was also reflected in nitrogenase MoFe protein abundance and patterns of Fe protein posttranslational modification-demodification.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-1372674, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-1592828, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-16348883, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-16348931, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-16535258, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-3528192, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-7928999, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-8132452, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-8516317, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-8843429, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-8985018, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-9098067, http://linkedlifedata.com/resource/pubmed/commentcorrection/9658003-9209050
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0021-9193
pubmed:author
pubmed:issnType
Print
pubmed:volume
180
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3598-605
pubmed:dateRevised
2010-9-13
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Circadian rhythm of nitrogenase gene expression in the diazotrophic filamentous nonheterocystous cyanobacterium Trichodesmium sp. strain IMS 101.
pubmed:affiliation
Biology Department, Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.