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Suppression of reactive oxygen species accumulation in chloroplasts prevents leaf damage but not growth arrest in salt-stressed tobacco plants

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dc.citation.titlePLOS ONEes
dc.citation.volume11(7)es
dc.creatorLodeyro, Anabella F.
dc.creatorGiró, Mariana
dc.creatorPoli, Hugo O.
dc.creatorBettucci, Gabriel
dc.creatorCortadi, Adriana
dc.creatorFerri, Alejandro M.
dc.creatorCarrillo, Néstor
dc.date.accessioned2021-02-23T19:49:55Z
dc.date.available2021-02-23T19:49:55Z
dc.date.issued2016-07-21
dc.descriptionCrop yield reduction due to salinity is a growing agronomical concern in many regions. Increased production of reactive oxygen species (ROS) in plant cells accompanies many abiotic stresses including salinity, acting as toxic and signaling molecules during plant stress responses. While ROS are generated in various cellular compartments, chloroplasts represent a main source in the light, and plastid ROS synthesis and/or elimination have been manipulated to improve stress tolerance. Transgenic tobacco plants expressing a plastid-targeted cyanobacterial flavodoxin, a flavoprotein that prevents ROS accumulation specifically in chloroplasts, displayed increased tolerance to many environmental stresses, including drought, excess irradiation, extreme temperatures and iron starvation. Surprisingly, flavodoxin expression failed to protect transgenic plants against NaCl toxicity. However, when high salt was directly applied to leaf discs, flavodoxin did increase tolerance, as reflected by preservation of chlorophylls, carotenoids and photosynthetic activities. Flavodoxin decreased salt-dependent ROS accumulation in leaf tissue from discs and whole plants, but this decline did not improve tolerance at the whole plant level. NaCl accumulation in roots, as well as increased osmotic pressure and salt-induced root damage, were not prevented by flavodoxin expression. The results indicate that ROS formed in chloroplasts have a marginal effect on plant responses during salt stress, and that sensitive targets are present in roots which are not protected by flavodoxin.es
dc.descriptionPara citar este articulo: Lodeyro AF, Giró M, Poli HO, Bettucci G, Cortadi A, Ferri AM, et al. (2016) Suppression of Reactive Oxygen Species Accumulation in Chloroplasts Prevents Leaf Damage but Not Growth Arrest in Salt-Stressed Tobacco Plants. PLoS ONE 11(7): e0159588. doi:10.1371/journal.pone.0159588
dc.description.filFil: Lodeyro, Anabella F. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR -CONICET); Argentina.es
dc.description.filFil: Giró, Mariana. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR -CONICET); Argentina.es
dc.description.filFil: Poli, Hugo O. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR -CONICET); Argentina.es
dc.description.filFil: Bettucci, Gabriel. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Departamento de Ciencias Biológicas; Argentina.es
dc.description.filFil: Cortadi, Adriana. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Departamento de Ciencias Biológicas; Argentina.es
dc.description.filFil: Ferri, Alejandro M. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Departamento de Química Analítica; Argentina.es
dc.description.filFil: Carrillo, Néstor. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR -CONICET); Argentina.es
dc.description.sponsorshipAgencia Nacional de Promoción Científica y Tecnológica (ANPCyT): PICT2012- 2851es
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET): PIP 11220110101075es
dc.formatapplication/pdf
dc.format.extent1-18es
dc.identifier.issn1932-6203es
dc.identifier.urihttp://hdl.handle.net/2133/19677
dc.language.isoenges
dc.publisherPublic Library of Science (PLOS)es
dc.relation.publisherversionhttps://doi.org/10.1371/journal.pone.0159588es
dc.relation.publisherversionhttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0159588es
dc.rightsopenAccesses
dc.rights.holderUniversidad Nacional de Rosarioes
dc.rights.holderLodeyro, Anabella F.es
dc.rights.holderGiró, Marianaes
dc.rights.holderPoli, Hugo O.es
dc.rights.holderBettucci, Gabrieles
dc.rights.holderCortadi, Adrianaes
dc.rights.holderFerri, Alejandro M.es
dc.rights.holderCarrillo, Néstores
dc.rights.textAttribution 4.0 International (CC BY 4.0)es
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectCrop Yieldes
dc.subjectReactive Oxygen Specieses
dc.subjectChloroplastses
dc.subjectSalt Stresses
dc.subjectTobaccoes
dc.titleSuppression of reactive oxygen species accumulation in chloroplasts prevents leaf damage but not growth arrest in salt-stressed tobacco plantses
dc.typearticle
dc.typeartículo
dc.typepublishedVersion
dc.type.collectionarticulo
dc.type.versionpublishedVersiones

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