Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/47378
DC FieldValueLanguage
dc.contributor.authorRomero-Kutzner, V.en_US
dc.contributor.authorPackard, T. T.en_US
dc.contributor.authorBerdalet, E.en_US
dc.contributor.authorRoy, S. O.en_US
dc.contributor.authorGagné, J. P.en_US
dc.contributor.authorGómez, Mayen_US
dc.date.accessioned2018-11-23T13:04:51Z-
dc.date.available2018-11-23T13:04:51Z-
dc.date.issued2015en_US
dc.identifier.issn0171-8630en_US
dc.identifier.urihttp://hdl.handle.net/10553/47378-
dc.description.abstractRespiratory metabolism was compared between 2 different physiological states of acetate- and pyruvate-grown cultures of Pseudomonas nautica and Vibrio natriegens. Here, we analyze 35 h and 520 h experiments in which time-courses of protein, pyruvate, acetate, respiratory CO2 production (RCO2), respiratory O2 consumption (RO2), isocitrate dehydrogenase (IDH) activity, and potential respiration (Φ) were measured. Respiratory quotients (RQs) were calculated as the ratio of the respiration rates (RCO2/RO2). Such RQs are widely used in ocean ecosystem models, in calculations of carbon flux, and in evaluations of the ocean’s metabolic balance. In all the cultures, the RQ tended to increase. In the case of P. nautica on acetate, the RQ rose nearly an order of magnitude from values below 1 during carbon-substrate sufficiency to values close to 10 during carbon-substrate deficiency. In all the cultures, the respiration rates during the growth period paralleled the biomass increase, but after the substrates were exhausted, the respiration rates fell. In contrast, through this same transition period, the IDH activity and the Φ remained relatively high for the first 10 h of carbon-substrate deprivation, and then, these enzyme activities fell slowly, along with the biomass, as the carbon-substrate deprivation continued. The nutritional state of the bacteria affected the RQ, rendering the RQ variable for physiological and ecological purposes. These results argue that ecosystem models, oceanographic calculations of carbon flux, and evaluations of the ocean’s metabolic balance that are influenced by bacterial metabolism need to be reconsidered in light of RQ variability.en_US
dc.languageengen_US
dc.relationMetabolismo planctónico: Regulación Bioquímica e Impacto Oceanográfico sobre la Bomba Biológicaen_US
dc.relation.ispartofMarine Ecology - Progress Seriesen_US
dc.sourceMarine Ecology Progress Series [ISSN 0171-8630], v. 519, p. 47-59en_US
dc.subject251001 Oceanografía biológicaen_US
dc.subject.otherO2 consumptionen_US
dc.subject.otherCO2 productionen_US
dc.subject.otherIsocitrate dehydrogenaseen_US
dc.subject.otherIDHen_US
dc.subject.otherElectron transport system (ETS)en_US
dc.subject.otherPotential respirationen_US
dc.subject.otherGrowthen_US
dc.titleRespiration quotient variability: Bacterial evidenceen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.3354/meps11062
dc.identifier.scopus84921914065-
dc.identifier.isi000349093800004
dc.contributor.authorscopusid56497874800-
dc.contributor.authorscopusid7004249480-
dc.contributor.authorscopusid55975291500-
dc.contributor.authorscopusid8923658500-
dc.contributor.authorscopusid57200973311-
dc.contributor.authorscopusid7401734371-
dc.description.lastpage59-
dc.description.firstpage47-
dc.relation.volume519-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.contributor.daisngid15629516
dc.contributor.daisngid26691147
dc.contributor.daisngid665884
dc.contributor.daisngid5424942
dc.contributor.daisngid220519
dc.contributor.daisngid1273639
dc.contributor.wosstandardWOS:Romero-Kutzner, V
dc.contributor.wosstandardWOS:Packard, TT
dc.contributor.wosstandardWOS:Berdalet, E
dc.contributor.wosstandardWOS:Roy, SO
dc.contributor.wosstandardWOS:Gagne, JP
dc.contributor.wosstandardWOS:Gomez, M
dc.date.coverdateEnero 2015
dc.identifier.ulpgces
dc.description.sjr1,552
dc.description.jcr2,361
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.project.principalinvestigatorGómez Cabrera, María Milagrosa-
crisitem.author.deptGIR ECOAQUA: Ecofisiología de Organismos Marinos-
crisitem.author.deptIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0001-7167-2662-
crisitem.author.orcid0000-0002-5880-1199-
crisitem.author.orcid0000-0002-7396-6493-
crisitem.author.parentorgIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.fullNameRomero Kutzner, Vanesa-
crisitem.author.fullNamePackard, Theodore Train-
crisitem.author.fullNameGómez Cabrera, María Milagrosa-
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