Short-term UV-B radiation affects photosynthetic performance and antioxidant gene expression in highbush blueberry leaves

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datacite.alternateIdentifier.citationPlant Physiology and Biochemistry, 107, 309-301, 2016
datacite.alternateIdentifier.doi10.1016/j.plaphy.2016.06.019
datacite.alternateIdentifier.issn0981-9428
datacite.creatorInostroza-Blancheteau, Claudio
datacite.creatorAcevedo, Patricio
datacite.creatorLoyola, Rodrigo
datacite.creatorArce-Johnson, Patricio
datacite.creatorAlberdi, Miren
datacite.creatorReyes-Diaz, Marjorie
datacite.date2016
datacite.rightsRegistro bibliográfico
datacite.subjectUV-B radiation
datacite.subjectHighbush blueberry
datacite.subjectPhotochemical parameters
datacite.subjectRadical scavenging activity
datacite.subjectAntioxidant gene expression
datacite.titleShort-term UV-B radiation affects photosynthetic performance and antioxidant gene expression in highbush blueberry leaves
dc.contributor.authorINOSTROZA BLANCHETEAU, CLAUDIO ANDRES
dc.description.abstractThe impact of increased artificial UV-B radiation on photosynthetic performance, antioxidant and SOD activities and molecular antioxidant metabolism responses in leaves of two highbush blueberry (Vaccinium corymbosum L. cv. Brigitta and Bluegold) genotypes was studied. Plants were grown in a solid substrate and exposed to 0, 0.07, 0.12 and 0.19 W m(-2) of biologically-effective UV-B irradiance for 0 -72 h. Our findings show that net photosynthesis (Pn) decreased significantly in Bluegold, accompanied by a reduction in the effective quantum yield (phi PSII) and electron transport rate (ETR), especially at the highest UV-B irradiation. On the other hand, Brigitta showed a better photosynthetic performance, as well as a clear increment in the antioxidant activity response that could be associated with increased superoxide dismutase activity (SOD) in the early hours of induced UV-B stress in all treatments. At the molecular level, the expression of the three antioxidant genes evaluated in both genotypes had a similar tendency. However, ascorbate peroxidase (APX) expression was significantly increased (6-fold) in Bluegold compared to Brigitta. Thus, the reduction of Pn concomitant with a lower photochemical performance and a reduced response of antioxidant metabolism suggest that the Bluegold genotype is more sensitive to UV-B radiation, while Brigitta appears to tolerate better moderate UV-B irradiance in a short-term experiment. (C) 2016 Elsevier Masson SAS. All rights reserved.
dc.description.ia_keywordantioxidant, performance, brigitta, bluegold, increased, radiation, photosynthetic
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/3882
dc.language.isoen
dc.publisherElsevier BV
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.sourcePlant Physiology and Biochemistry
dc.subject.ia_odsODS 11: Ciudades y comunidades sostenibles
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Biológicas
dc.subject.ia_oecd3nBiología General
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.citationEdition2016
oaire.citationEndPage309
oaire.citationStartPage301
oaire.citationTitlePlant Physiology and Biochemistry
oaire.citationVolume107
oaire.fundingReferenceCONICYT ANID FONDECYT 3120248 (Postdoctorado), 1120917 (Regular)
oaire.licenseConditionCopyright © Elsevier Masson SAS, 2016
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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