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dc.contributor.authorVázquez Manzanares, Víctor
dc.contributor.authorLeón Díaz, Pablo Ignacio
dc.contributor.authorLópez-Gordillo, Francisco Javier 
dc.contributor.authorJimenez, Carlos
dc.contributor.authorIñiguez, Concepción
dc.contributor.authorMacKenzie, Kevin
dc.contributor.authorBresnan, Eileen
dc.contributor.authorSegovia-Azcorra, Maria 
dc.date.accessioned2022-05-30T06:50:06Z
dc.date.available2022-05-30T06:50:06Z
dc.date.issued2022-05-27
dc.identifier.citationVázquez, V., León, P., Gordillo, F.J.L. et al. High-CO2 Levels Rather than Acidification Restrict Emiliania huxleyi Growth and Performance. Microb Ecol (2022). https://doi.org/10.1007/s00248-022-02035-3es_ES
dc.identifier.urihttps://hdl.handle.net/10630/24222
dc.description.abstractThe coccolithophore Emiliania huxleyi shows a variety of responses to ocean acidification (OA) and to high-CO2 concentrations, but there is still controversy on differentiating between these two factors when using different strains and culture methods. A heavily calcified type A strain isolated from the Norwegian Sea was selected and batch cultured in order to understand whether acclimation to OA was mediated mainly by CO2 or H+, and how it impacted cell growth performance, calcification, and physiological stress management. Emiliania huxleyi responded differently to each acidification method. CO2-enriched aeration (1200 µatm, pH 7.62) induced a negative effect on the cells when compared to acidification caused by decreasing pH alone (pH 7.60). The growth rates of the coccolithophore were more negatively affected by high pCO2 than by low pH without CO2 enrichment with respect to the control (400 µatm, pH 8.1). High CO2 also affected cell viability and promoted the accumulation of reactive oxygen species (ROS), which was not observed under low pH. This suggests a possible metabolic imbalance induced by high CO2 alone. In contrast, the affinity for carbon uptake was negatively affected by both low pH and high CO2. Photochemistry was only marginally affected by either acidification method when analysed by PAM fluorometry. The POC and PIC cellular quotas and the PIC:POC ratio shifted along the different phases of the cultures; consequently, calcification did not follow the same pattern observed in cell stress and growth performance. Specifically, acidification by HCl addition caused a higher proportion of severely deformed coccoliths, than CO2 enrichment. These results highlight the capacity of CO2 rather than acidification itself to generate metabolic stress, not reducing calcification.es_ES
dc.description.sponsorshipOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. Funding for open access charge: Universidad de Málaga / CBUA This work was funded by FC14-RNM-27 research grant (FITOVIA) from the University of Málaga, Spain (Plan Propio) to CJ. VV was funded by a EUROPE ERASMUS+grant to carry out research short-stay at Marine Scotland Marine Laboratory in Aberdeen, UK, and by a grant from the University of Málaga, Spain (Plan Propio).es_ES
dc.language.isoeng
dc.publisherSpringeres_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectCalcificaciónes_ES
dc.subject.otherEmiliania huxleyies_ES
dc.subject.otherOcean acidifcationes_ES
dc.subject.otherCalcifcationes_ES
dc.subject.otherpCO2es_ES
dc.subject.otherPhotochemistryes_ES
dc.subject.otherPhytoplanktones_ES
dc.subject.otherStresses_ES
dc.subject.otherCoccolithophoreses_ES
dc.titleHigh-CO2 Levels Rather than Acidification Restrict Emiliania huxleyi Growth and Performancees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES
dc.identifier.doihttps://doi.org/10.1007/s00248-022-02035-3
dc.rights.ccAtribución 4.0 Internacional*


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