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dc.creatorLeón Vaz, Antonioes
dc.creatorLeón, Rosaes
dc.creatorGiráldez, Inmaculadaes
dc.creatorVega Piqueres, José Maríaes
dc.creatorVigara, Javieres
dc.date.accessioned2023-09-07T14:28:43Z
dc.date.available2023-09-07T14:28:43Z
dc.date.issued2021
dc.identifier.citationLeón Vaz, A., León, R., Giráldez, I., Vega Piqueres, J.M. y Vigara, J. (2021). Impact of heavy metals in the microalga Chlorella sorokiniana and assessment of its potential use in cadmium bioremediation. Aquatic Toxicology, 239, 105941. https://doi.org/10.1016/j.aquatox.2021.105941.
dc.identifier.issn0166-445Xes
dc.identifier.issn1879-1514es
dc.identifier.urihttps://hdl.handle.net/11441/148707
dc.description.abstractThe chlorophyte microalga Chlorella sorokiniana was tested for the bioremediation of heavy metals pollution. It was cultured with different concentrations of Cu+2+, Cd+2+, As (III) and As (V), showing a significant inhibition on its growth at concentrations of 500 µM Cu+2+, 250 µM Cd+2+, 750 µM AsO33- and 5 mM AsO43- or higher. Moreover, the consumption of ammonium was also studied, showing significant differences for concentrations higher than 1 mM of Cu+2+ and As (III), and 5 mM of As (V). The determination of intracellular heavy metals concentration revealed that Chlorella sorokiniana is an outstanding Cd accumulator organism, able to accumulate 11,232 mg kg−1 of Cd, and removing 65% of initial concentration of this heavy metal. Finally, antioxidant enzymes, such as catalase (CAT) and ascorbate peroxidase (APX), and enzymes involved in the production of glutamate and cysteine, such as glutamine syntethase (GS), glutamate dehydrogenase (GDH), O-acetylserine (thiol) lyase (OASTL) and NAD-isocitrate dehydrogenase (NAD-IDH) were studied both at gene expression and enzymatic activity levels. These enzymes exhibited different grades of upregulation, especially in response to Cd and As stress. However, GS expression was downregulated when Chlorella sorokiniana was cultured in the presence of these heavy metals.es
dc.description.sponsorshipEuropean Union INTERREG VAPOCTEP-2014-2020, 0055_ALGARED_PLUS_5_Ees
dc.description.sponsorshipUniversidad de Huelva UHU-1257518es
dc.description.sponsorshipAgencia Estatal de Investigación PID 2019-110438RBC22es
dc.formatapplication/pdfes
dc.format.extent23 p.es
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofAquatic Toxicology, 239, 105941.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAccumulationes
dc.subjectEnzymatic activityes
dc.subjectGene expressiones
dc.subjectHeavy metales
dc.subjectMicroalgaees
dc.subjectNitrogen uptakees
dc.titleImpact of heavy metals in the microalga Chlorella sorokiniana and assessment of its potential use in cadmium bioremediationes
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/submittedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Moleculares
dc.relation.projectIDINTERREG VAPOCTEP-2014-2020es
dc.relation.projectID0055_ALGARED_PLUS_5_Ees
dc.relation.projectIDUHU-1257518es
dc.relation.projectIDPID 2019-110438RBC22es
dc.relation.publisherversionhttps://doi.org/10.1016/j.aquatox.2021.105941es
dc.identifier.doi10.1016/j.aquatox.2021.105941es
dc.journaltitleAquatic Toxicologyes
dc.publication.volumen239es
dc.publication.initialPage105941es
dc.contributor.funderEuropean Union (UE)es
dc.contributor.funderUniversidad de Huelvaes
dc.contributor.funderAgencia Estatal de Investigación. Españaes

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