Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/20029
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dc.contributor.authorWyman, Michaelen_UK
dc.contributor.authorBird, Clareen_UK
dc.date.accessioned2014-05-02T23:11:55Z-
dc.date.available2014-05-02T23:11:55Z-
dc.date.issued2007-05en_UK
dc.identifier.urihttp://hdl.handle.net/1893/20029-
dc.description.abstractIn cyanobacteria, the transcriptional activator NtcA is involved in global nitrogen control and, in the absence of ammonium, regulates the expression of genes involved in the assimilation of alternative nitrogen sources. The oceanic picocyanobacterium Synechococcus sp. strain WH 8103 harbors a copy of ntcA, but in the present study, we show that unlike other marine cyanobacteria that have been investigated, this strain is capable of coassimilating nitrite when grown in the presence of ammonium. Transcript levels for the genes encoding the nitrate/nitrite-bispecific permease NrtP and nitrate reductase (NarB) were substantially down-regulated by ammonium, whereas the abundances of nitrite reductase (NirA) transcripts were similar in nitrite- and ammonium-grown cells. The growth of Synechococcus sp. strain WH 8103 in medium containing both ammonium and nitrite resulted in only minor changes in the expression profile in comparison to that of nitrite-grown cells with the exception that the gene encoding the high-affinity ammonium transporter Amt1 was down-regulated to the levels seen in ammonium-grown cells. Whereas the expression of nrtP, narB, and amt1 appears to be NtcA dependent in this marine cyanobacterium, the transcription and expression of nirA appear not to be. The ability to coassimilate nitrite and reduced-nitrogen sources like ammonium may be an adaptive trait that enables oceanic strains like Synechococcus sp. strain WH 8103 to exploit the low nitrite concentrations found in oceanic surface waters that are not available to their principal and more numerous competitor, Prochlorococcus.en_UK
dc.language.isoenen_UK
dc.publisherAmerican Society for Microbiologyen_UK
dc.relationWyman M & Bird C (2007) Lack of Control of Nitrite Assimilation by Ammonium in an Oceanic Picocyanobacterium, Synechococcus sp. Strain WH 8103. Applied and Environmental Microbiology, 73 (9), pp. 3028-3033. https://doi.org/10.1128/AEM.02606-06en_UK
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.rights.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserveden_UK
dc.subjectABILITYen_UK
dc.subjectABUNDANCEen_UK
dc.subjectAMMONIUMen_UK
dc.subjectASSIMILATIONen_UK
dc.subjectCELLSen_UK
dc.subjectControlen_UK
dc.subjectexpressionen_UK
dc.subjectgeneen_UK
dc.subjectGenesen_UK
dc.subjectGrowthen_UK
dc.subjectLEVELen_UK
dc.subjectlevelsen_UK
dc.subjectmarineen_UK
dc.subjectmediaen_UK
dc.subjectNITROGENen_UK
dc.subjectotheren_UK
dc.subjectRAEen_UK
dc.subjectSTRAINSen_UK
dc.subjectSURFACEen_UK
dc.subjectTRAITen_UK
dc.subjectWATERen_UK
dc.subjectWATERSen_UK
dc.titleLack of Control of Nitrite Assimilation by Ammonium in an Oceanic Picocyanobacterium, Synechococcus sp. Strain WH 8103en_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate3000-01-01en_UK
dc.rights.embargoreason[Appl Environ Microbiol 2007.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.identifier.doi10.1128/AEM.02606-06en_UK
dc.citation.jtitleApplied and Environmental Microbiologyen_UK
dc.citation.issn1098-5336en_UK
dc.citation.issn0099-2240en_UK
dc.citation.volume73en_UK
dc.citation.issue9en_UK
dc.citation.spage3028en_UK
dc.citation.epage3033en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.author.emailmichael.wyman@stir.ac.uken_UK
dc.publisher.addressWashington, DCen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.identifier.isiWOS:000246238500032en_UK
dc.identifier.scopusid2-s2.0-34248182854en_UK
dc.identifier.wtid801119en_UK
dc.contributor.orcid0000-0002-2433-4879en_UK
dc.contributor.orcid0000-0002-7500-5573en_UK
dcterms.dateAccepted2007-05-31en_UK
dc.date.filedepositdate2014-05-02en_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionVoRen_UK
local.rioxx.authorWyman, Michael|0000-0002-2433-4879en_UK
local.rioxx.authorBird, Clare|0000-0002-7500-5573en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate3000-01-01en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||en_UK
local.rioxx.filenameAppl Environ Microbiol 2007.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source0099-2240en_UK
Appears in Collections:Biological and Environmental Sciences Journal Articles

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