Early induction of Fe-SOD gene expression is involved in tolerance to Mn toxicity in perennial ryegrass

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datacite.alternateIdentifier.citationPlant Physiology and Biochemistry, 73, 82-77, 2013
datacite.alternateIdentifier.doi10.1016/j.plaphy.2013.08.012
datacite.alternateIdentifier.issn0981-9428
datacite.creatorRibera-Fonseca, Alejandra
datacite.creatorInostroza-Blancheteau, Claudio
datacite.creatorCartes, Paula
datacite.creatorRengel, Zed
datacite.creatorMora, M. L.
datacite.date2013
datacite.rightsRegistro bibliográfico
datacite.subjectManganese toxicity
datacite.subjectManganese tolerance
datacite.subjectRyegrass
datacite.subjectOxidative stress
datacite.subjectSuperoxide dismutase isoforms
datacite.subjectFe-SOD
datacite.subjectGene expression
datacite.titleEarly induction of Fe-SOD gene expression is involved in tolerance to Mn toxicity in perennial ryegrass
dc.contributor.authorINOSTROZA BLANCHETEAU, CLAUDIO ANDRES
dc.description.abstractManganese (Mn) toxicity limits plant growth in acid soils. Although Mn toxicity induces oxidative stress, the role of superoxide dismutase (SOD, EC.1.15.1.1) isoforms in conferring Mn tolerance remains unclear. Seedlings of ryegrass cultivars Nui (Mn-sensitive) and Kingston (Mn-tolerant) were hydroponically grown at 2.4 (optimal) or 750 mu M Mn (toxic) concentration, and harvested from 2 to 48 h. Kingston showed higher shoot Mn than Nui at 2.4;mu M Mn. At toxic supply, shoot Mn concentration steadily increased in both cultivars, with Kingston having the highest accumulation at 48 h. An early (2 h) increase in lipid peroxidation under Mn excess occurred, but it returned (after 6 h) to the basal level in Kingston only. Kingston exhibited higher SOD activity than Nui, and that difference increased due to toxic Mn. In general, Mn-induced gene expression of Mn- and Cu/Zn-SOD isoforms was higher in Nui than Kingston. Nevertheless, under Mn excess, we found a greater Fe-SOD up-regulation (up to 5-fold) in Kingston compared to Nui. Thus, Fe-SOD induction in Kingston might explain, at least partly, its high tolerance to Mn toxicity. This is the first evidence that Mn toxicity causes differential gene expression of SOD isoforms in ryegrass cultivars in the short-term. (C) 2013 Published by Elsevier Masson SAS.
dc.description.ia_keywordkingston, toxicity, isoforms, tolerance, ryegrass, cultivars, toxic
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/3594
dc.language.isoen
dc.publisherElsevier BV
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.sourcePlant Physiology and Biochemistry
dc.type.driverinfo:eu-repo/semantics/article
dc.type.driverhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.openaireinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
oaire.citationEdition2013
oaire.citationEndPage82
oaire.citationStartPage77
oaire.citationTitlePlant Physiology and Biochemistry
oaire.citationVolume73
oaire.fundingReferenceCONICYT ANID FONDECYT 11100494, 1120901 (Regular), 3120248 (Postdoctorado)
oaire.licenseConditionCopyright © Elsevier Masson SAS, 2013
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
relation.isAuthorOfPublication25287ee1-cae8-401d-b42c-ee3f8fc05d2a
relation.isAuthorOfPublication.latestForDiscovery25287ee1-cae8-401d-b42c-ee3f8fc05d2a
uct.catalogadorjvu
uct.comunidadRecursos Naturalesen_US
uct.departamentoDepartamento de Ciencias Agropecuarias y Acuícolas
uct.facultadFacultad de Recursos Naturales
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionPubMed
uct.indizacionCAB Abstracts
uct.indizacionAGRICOLA
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