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dc.creatorMateos Naranjo, Enriquees
dc.creatorPérez Romero, Jesús Albertoes
dc.creatorRedondo Gómez, Susanaes
dc.creatorMesa Marín, Jenniferes
dc.creatorCastellanos, Eloy Manueles
dc.creatorDavy, Anthony Johnes
dc.date.accessioned2022-05-23T16:39:53Z
dc.date.available2022-05-23T16:39:53Z
dc.date.issued2018
dc.identifier.citationMateos Naranjo, E., Pérez Romero, J.A., Redondo Gómez, S., Mesa Marín, J., Castellanos, E.M. y Davy, A.J. (2018). Salinity alleviates zinc toxicity in the saltmarsh zinc-accumulator Juncus acutus. Ecotoxicology and Environmental Safety, 163, 478-485.
dc.identifier.issn0147-6513es
dc.identifier.issn1090-2414es
dc.identifier.urihttps://hdl.handle.net/11441/133545
dc.description.abstractThe potential importance of Juncus acutus for remediation of Zn-contaminated lands has been recognized, because of its Zn tolerance and capacity to accumulate Zn. Since it is also a halophyte, the extent to which salinity influences its Zn tolerance requires investigation. A factorial greenhouse experiment was designed to assess the effect of NaCl supply (0 and 85 mM NaCl) on the growth, photosynthetic physiology and tissue ions concentrations of plants exposed to 0, 30 and 100 mM Zn. Our results indicated that NaCl supplementation alleviated the effects of Zn toxicity on growth, as Zn at 100 mM reduced relative growth rate (RGR) by 60% in the absence of NaCl but by only 34% in plants treated also with NaCl. This effect was linked to a reduction in Zn tissue concentrations, as well as to overall protective effects on various stages in the photosynthetic pathway. Thus, at 85 mM NaCl plants were able to maintain higher net photosynthesis (AN) than in the absence of added NaCl, although there were no differences in stomatal conductance (gs). This contributed to preserving the trade-off between CO2 acquisition and water loss, as indicated by higher intrinsic water use efficiency (iWUE). Hence, AN differences were ascribed to limitation in the RuBisCO carboxylation, manifested as higher intercellular CO2 concentration (Ci), together with dysfunction of PSII photochemistry (in term of light harvest and energy excess dissipation), as indicated by higher chronic photoinhibition percentages and variations in the photosynthetic pigment profiles in presence of Zn under non-saline conditions.es
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO) CGL2016-75550-Res
dc.description.sponsorshipMinisterio de Educación, Cultura y Deporte FPU014/03987es
dc.formatapplication/pdfes
dc.format.extent32 p.es
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofEcotoxicology and Environmental Safety, 163, 478-485.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectChlorophyll fluorescencees
dc.subjectGas exchangees
dc.subjectHalophytees
dc.subjectPhotoinhibitiones
dc.subjectSalinityes
dc.subjectZn-stresses
dc.titleSalinity alleviates zinc toxicity in the saltmarsh zinc-accumulator Juncus acutuses
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 Biología Vegetal y Ecologíaes
dc.relation.projectIDCGL2016-75550-Res
dc.relation.projectIDFPU014/03987es
dc.relation.publisherversionhttps://doi.org/10.1016/j.ecoenv.2018.07.092es
dc.identifier.doi10.1016/j.ecoenv.2018.07.092es
dc.journaltitleEcotoxicology and Environmental Safetyes
dc.publication.volumen163es
dc.publication.initialPage478es
dc.publication.endPage485es
dc.contributor.funderMinisterio de Economía y Competitividad (MINECO). Españaes
dc.contributor.funderMinisterio de Educación, Cultura y Deporte (MECD). Españaes

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