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dc.contributor.authorAndrés Bordería, Amparoes_ES
dc.contributor.authorAndrés, Fernandoes_ES
dc.contributor.authorGarcia Molina, Antonies_ES
dc.contributor.authorPerea García, Anaes_ES
dc.contributor.authorDomingo, Conchaes_ES
dc.contributor.authorPuig, Sergies_ES
dc.contributor.authorPeñarrubia, Lolaes_ES
dc.date.accessioned2017-12-18T09:12:20Z-
dc.date.available2017-12-18T09:12:20Z-
dc.date.issued2017-06-19-
dc.identifier.citationPlant Molecular Biology 95 (1-2): 17-32 (2017)es_ES
dc.identifier.issn0167-4412-
dc.identifier.urihttp://hdl.handle.net/10261/158255-
dc.description.abstractHigher plants have developed sophisticated mechanisms to efficiently acquire and use micronutrients such as copper and iron. However, the molecular mechanisms underlying the interaction between both metals remain poorly understood. In the present work, we study the effects produced on iron homeostasis by a wide range of copper concentrations in the growth media and by altered copper transport in Oryza sativa plants. Gene expression profiles in rice seedlings grown under copper excess show an altered expression of genes involved in iron homeostasis compared to standard control conditions. Thus, ferritin OsFER2 and ferredoxin OsFd1 mRNAs are down-regulated whereas the transcriptional iron regulator OsIRO2 and the nicotianamine synthase OsNAS2 mRNAs rise under copper excess. As expected, the expression of OsCOPT1, which encodes a high-affinity copper transport protein, as well as other copper-deficiency markers are down-regulated by copper. Furthermore, we show that Arabidopsis COPT1 overexpression (C1OE) in rice causes root shortening in high copper conditions and under iron deficiency. C1OE rice plants modify the expression of the putative iron-sensing factors OsHRZ1 and OsHRZ2 and enhance the expression of OsIRO2 under copper excess, which suggests a role of copper transport in iron signaling. Importantly, the C1OE rice plants grown on soil contain higher endogenous iron concentration than wild-type plants in both brown and white grains. Collectively, these results highlight the effects of rice copper status on iron homeostasis, which should be considered to obtain crops with optimized nutrient concentrations in edible parts.es_ES
dc.description.sponsorshipThis work has been supported by grants BIO2011-24848 and BIO2014-56298-P from the Spanish Ministry of Economy and Competitiveness, and by FEDER funds from the European Union.es_ES
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.relationMINECO/ICTI2013-2016/BIO2014-56298-Pes_ES
dc.relation.isversionofPostprintes_ES
dc.rightsopenAccessen_EN
dc.subjectCopperes_ES
dc.subjectIrones_ES
dc.subjectMetal transportes_ES
dc.subjectOryza sativaes_ES
dc.subjectCOPT1es_ES
dc.subjectOsIRO2es_ES
dc.titleCopper and ectopic expression of the Arabidopsis transport protein COPT1 alter iron homeostasis in rice (Oryza sativa L.)es_ES
dc.typeartículoes_ES
dc.identifier.doi10.1007/s11103-017-0622-8-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttps://doi.org/10.1007/s11103-017-0622-8es_ES
dc.identifier.e-issn1573-5028-
dc.embargo.terms2018-06-19es_ES
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.contributor.funderEuropean Commissiones_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
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