Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/111003
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dc.contributor.authorRomero Kutzner, Vanesaen_US
dc.contributor.authorPackard, Theodore Trainen_US
dc.contributor.authorBerdalet, Elisaen_US
dc.contributor.authorRoy, Silvie O.en_US
dc.contributor.authorGagné, Jean Pierreen_US
dc.contributor.authorGómez Cabrera, María Milagrosaen_US
dc.date.accessioned2021-07-22T09:36:13Z-
dc.date.available2021-07-22T09:36:13Z-
dc.date.issued2016en_US
dc.identifier.isbn978-84-16724-16-1en_US
dc.identifier.urihttp://hdl.handle.net/10553/111003-
dc.description.abstractThe effect of aging and substrate limitation on respiratory metabolism was comparedd during two different physiological states of acetate-grown Pseudomonas nautica cultures. In this study, we analyze 30 h and 170 h time-course experiments in which cell-protein, acetate, respiratory CO2 production (RCCO2) and respiratory O2 consumption (RO2) were measured and respiratory quotients (RQs= RCO2/RO2) were calculated. RQs are commonly used as a constant, over a range of 0.8 to 1, in ocean studies, to evaluate many factors such as the autotrophic-heterotrophic nature of the ocean and the vertical carbon flux. In the laboratorry we observed that RQ can rise an order of magnitude above this constant. In the early well-fed growth sttage of our short term experiment RO2 rates were higher than RCO2 rates (RQ=0,4), nevertheless in senescence and under limited carbon-substrate conditions this ratio shifted up to 9,6. We conclude that the culture aging and substrate limitations affected the RQ of P. nautica culture, in a way that the use of a constant RQ for biological calculations is inadvisable. Therefore, these results argue that oceanic measurements which are influenced by bacterial metabolism and nutrient limitation need to be reconsidered in face of this strong RQ variability. Lastly, because our microbial biomass remained relatively constant in face of nutrient-limitation, our results suggest a link between substrate deprivation, senescence and possibly, longevity.en_US
dc.languageengen_US
dc.publisherUniversidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicadaen_US
dc.sourceLibro de resúmenes: V Simposio Internacional de Ciencias del Mar, Universidad de Alicante, p. 268-269en_US
dc.subject240119 Zoología marinaen_US
dc.titleAging and Respiration in the Marine Bacteria, Pseudomonas nauticaen_US
dc.typeinfo:eu-repo/semantics/conferenceobjecten_US
dc.typeConferenceObjecten_US
dc.relation.conferenceV Simposio Internacional de Ciencias del Mar, Alicante, 2016en_US
dc.description.lastpage269en_US
dc.description.firstpage268en_US
dc.investigacionCienciasen_US
dc.type2Actas de congresosen_US
dc.description.numberofpages2en_US
dc.utils.revisionen_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-BASen_US
item.fulltextCon texto completo-
item.grantfulltextopen-
crisitem.author.deptGIR ECOAQUA: Ecofisiología de Organismos Marinos-
crisitem.author.deptIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.deptGIR ECOAQUA: Ecofisiología de Organismos Marinos-
crisitem.author.deptIU de Investigación en Acuicultura Sostenible y Ec-
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.parentorgIU de Investigación en Acuicultura Sostenible y Ec-
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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