Physiological and biochemical responses to manganese toxicity in ryegrass (Lolium perenne L.) genotypes

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datacite.alternateIdentifier.citationPlant Physiology and Biochemistry, 113, 97-89, 2017
datacite.alternateIdentifier.doi10.1016/j.plaphy.2017.02.003
datacite.alternateIdentifier.issn0981-9428
datacite.creatorInostroza-Blancheteau, Claudio
datacite.creatorReyes-Diaz, Marjorie
datacite.creatorBerrios, Graciela
datacite.creatorRodrigues-Salvador, Acacio
datacite.creatorNunes-Nesi, Adriano
datacite.creatorDeppe, Mariana
datacite.creatorDemanet, Rolando
datacite.creatorRengel, Zed
datacite.creatorAlberdi, Miren
datacite.date2017
datacite.rightsRegistro bibliográfico
datacite.subjectAntioxidant capacity
datacite.subjectMn resistance
datacite.subjectOxidative stress
datacite.subjectPhotosynthesis
datacite.subjectRyegrass
datacite.titlePhysiological and biochemical responses to manganese toxicity in ryegrass (Lolium perenne L.) genotypes
dc.contributor.authorINOSTROZA BLANCHETEAU, CLAUDIO ANDRES
dc.description.abstractWe studied resistance to manganese (Mn) toxicity under acidic conditions and its relationship with nutrients such as calcium (Ca) and magnesium (Mg) in new perennial ryegrass (Lolium perenne L.) genotypes (One-50, Banquet-II and Halo-AR1) introduced in southern Chile, using the Nui genotype as the reference. Plants were grown in nutrient solution at increased Mn concentrations (0-750 mu M) at pH 4.8, and physiological and biochemical features were determined. Under higher Mn concentration, the One 50 genotype had a significantly lower relative growth rate (RGR) of shoots and roots, whereas in the other cultivars this parameter did not change under variable Mn treatments. Increasing the Mn concentration led to an increased Mn concentration in roots and shoots, with Banquet-II and Halo-AR1 having higher Mn in roots than shoots. Shoot Mg and Ca concentrations in all genotypes (except Banquet-II) decreased concomitantly with increasing Mn applications. In contrast to the other genotypes, Banquet-II and Halo-AR1 maintained their net CO2 assimilation rate regardless of Mn treatment, whereas the chlorophyll concentration decreased in all genotypes with the exception of Banquet-II. In addition, lipid peroxidation in Banquet-II roots increased at 150 mu M Mn, but decreased at higher Mn concentrations. This decrease was associated with an increase in antioxidant capacity as well as total phenol concentration. Banquet-II and Halo-AR1 appear to be the most Mn-resistant genotypes based on RGR and CO2 assimilation rate. In addition, Mn excess provoked a strong decrease in Ca and Mg concentrations in shoots of the Mn-sensitive genotype, whereas only slight variations in the Mn-resistant genotype were noted. When other evaluated parameters were taken into account, we concluded that among the perennial ryegrass genotypes introduced recently into southern Chile Banquet-II appears to be the most Mn-resistant, followed by Halo-AR1, with One-50 being the most sensitive. (C) 2017 Elsevier Masson SAS. All rights reserved.
dc.description.ia_keywordbanquet, genotypes, halo, concentration, genotype, were, concentrations
dc.identifier.issn1873-2690
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/3789
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.subject.ia_oecd1nCiencias Médicas y de la Salud
dc.subject.ia_oecd2nMedicina Clínica
dc.subject.ia_oecd3nMedicina Clínica
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.citationEdition2017
oaire.citationEndPage97
oaire.citationStartPage89
oaire.citationTitlePlant Physiology and Biochemistry
oaire.citationVolume113
oaire.fundingReferenceANID FONDECYT 1141250 (Regular)
oaire.licenseConditionCopyright © Elsevier Masson SAS, 2017
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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