English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/157786
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

DC FieldValueLanguage
dc.contributor.authorFaize, Mohamedes_ES
dc.contributor.authorBurgos Ortiz, Lorenzoes_ES
dc.contributor.authorFaize, Lydiaes_ES
dc.contributor.authorPiqueras, Abeles_ES
dc.contributor.authorNicolás Nicolás, Emilioes_ES
dc.contributor.authorBarba-Espín, Gregorioes_ES
dc.contributor.authorClemente-Moreno, María Josées_ES
dc.contributor.authorAlcobendas Puig, Rosalíaes_ES
dc.contributor.authorArtlip, T.es_ES
dc.contributor.authorHernández, José Antonioes_ES
dc.identifier.citationJournal of Experimental Botany 63(8): 2599-2613 (2011)es_ES
dc.description.abstractIn order to understand the role of cytosolic antioxidant enzymes in drought stress protection, transgenic tobacco (Nicotiana tabacum cv. Xanthi) plants overexpressing cytosolic Cu/Zn-superoxide dismutase (cytsod) (EC or ascorbate peroxidase (cytapx) (EC alone, or in combination, were produced and tested for tolerance against mild water stress. The results showed that the simultaneous overexpression of Cu/Znsod and apx or at least apx in the cytosol of transgenic tobacco plants alleviates, to some extent, the damage produced by wáter stress conditions. This was correlated with higher water use efficiency and better photosynthetic rates. In general, oxidative stress parameters, such as lipid peroxidation, electrolyte leakage, and H2O2 levels, were higher in non-transformed plants than in transgenic lines, suggesting that, at the least, overexpression of cytapx protects tobacco membranes from water stress. In these conditions, the activity of other antioxidant enzymes was induced in transgenic lines at the subcellular level. Moreover, an increase in the activity of some antioxidant enzymes was also observed in the chloroplast of transgenic plants overexpressing cytsod and/or cytapx. These results suggest the positive influence of cytosolic antioxidant metabolism on the chloroplast and underline the complexity of the regulation network of plant antioxidant defences during drought stress.es_ES
dc.description.sponsorshipThis work was supported by BIOCARM BIO-AGR07/ 04-0011, CICYT AGL2006-01743/AGR, and CICYT BFU2009-07443. MF was supported by a ‘Ramo´n & Cajal’ contract from the Spanish Ministry of Education. GBE thanks the CSIC for his JAE research fellowship. MJCM thanks the Spanish Ministry of Science and Education for her FPI research fellowship.es_ES
dc.publisherOxford University Presses_ES
dc.relation.isversionofPublisher's versiones_ES
dc.subjectCytosolic ascorbate peroxidasees_ES
dc.subjectCytosolic superoxide dismutasees_ES
dc.subjectWater stresses_ES
dc.titleInvolvement of cytosolic ascorbate peroxidase and Cu/Zn-superoxide dismutase for improved tolerance against drought stresses_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderGobierno de la Región de Murciaes_ES
dc.contributor.funderComisión Interministerial de Ciencia y Tecnología, CICYT (España)es_ES
dc.contributor.funderMinisterio de Educación (España)es_ES
dc.contributor.funderMinisterio de Educación y Ciencia (España)es_ES
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)es_ES
oprm.item.hasRevisionno ko 0 false*
Appears in Collections:(CEBAS) Artículos
Files in This Item:
File Description SizeFormat 
Involvement of cytosolic ascorbate peroxidase.pdf395,71 kBAdobe PDFThumbnail
Show simple item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.