title: CO2 leaking from sub-seabed storage: Responses of two marine bacteria strains.
abstract: Carbon capture and storage (CCS) in stable geological locations is one of the options to mitigate the negative effects of global warming produced by the increase in CO2 concentrations in the atmosphere. A CO2 leak is one of the risks associated with this strategy. Marine bacteria attached to the sediment may be affected by an acidification event. Responses of two marine strains (Roseobacter sp. CECT 7117 and Pseudomonas litoralis CECT 7670) were assessed under different scenarios using a range of pH values (7.8, 7, 6.5, 6, and 5.5) to mimic a CO2 leak. A CO2 injection system was used to simulate an escape from a stable sub-seabed. Growth rate (μ), cell number, inhibition of Relative Inhibitory Effect (RI CO2) and inhibited population were analysed as endpoints. P. litoralis showed more sensitivity to high CO2 concentrations than Roseobacter sp. Our results highlight the diversity and resistance in marine bacteria and their capacity to adapt under a stressful CO2 leakage.
authors.affiliation: Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN WiCoP, Campus de Excelencia Internacional del Mar (CEIMAR), Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain. Electronic address: ana.borrero@uca.es.
authors.forename: A R
authors.initials: AR
authors.lastname: Borrero-Santiago
authors.affiliation: Departamento de Biomedicina, Biotecnología y Salud Pública, Laboratorio de Microbiología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Carbú
authors.affiliation: Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN WiCoP, Campus de Excelencia Internacional del Mar (CEIMAR), Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain.
authors.forename: T Á
authors.initials: TÁ
authors.lastname: DelValls
authors.affiliation: Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN WiCoP, Campus de Excelencia Internacional del Mar (CEIMAR), Polígono Río San Pedro s/n, Puerto Real, 11510 Cádiz, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Riba
mesh_terms: D002245:Carbon Dioxide; D057965:Carbon Sequestration; D019015:Geologic Sediments; D057232:Global Warming; D006863:Hydrogen-Ion Concentration; D011549:Pseudomonas / Q000502:physiology*; D041904:Roseobacter / Q000502:physiology*; D012623:Seawater; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide
keywords: CO(2) leaking; Carbon capture and storage (CCS); Pseudomonas litoralis; Roseobacter sp.; pH