Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/55496
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dc.contributor.authorSchuler, M.-
dc.contributor.authorRellán-Álvarez, Rubén-
dc.contributor.authorFink-Straube, Claudia-
dc.contributor.authorAbadía Bayona, Javier-
dc.contributor.authorAbadía Bayona, Javier-
dc.contributor.authorBauer, Petra-
dc.date.accessioned2012-09-04T07:35:39Z-
dc.date.available2012-09-04T07:35:39Z-
dc.date.issued2012-06-
dc.identifier.citationSchuler M, Rellán-Álvarez R, Fink-Straube C, Abadía J, Bauer P. Nicotianamine Functions in the Phloem-Based Transport of Iron to Sink Organs, in Pollen Development and Pollen Tube Growth in Arabidopsis. Plant Cell 24 (6): 2380-2400 (2012)es_ES
dc.identifier.issn1040-4651-
dc.identifier.urihttp://hdl.handle.net/10261/55496-
dc.description21 Pags., 18 Figs.es_ES
dc.description.abstractThe metal chelator nicotianamine promotes the bioavailability of Fe and reduces cellular Fe toxicity. For breeding Fe-efficient crops, we need to explore the fundamental impact of nicotianamine on plant development and physiology. The quadruple nas4x-2 mutant of Arabidopsis thaliana cannot synthesize any nicotianamine, shows strong leaf chlorosis, and is sterile. To date, these phenotypes have not been fully explained. Here, we show that sink organs of this mutant were Fe deficient, while aged leaves were Fe sufficient. Upper organs were also Zn deficient. We demonstrate that transport of Fe to aged leaves relied on citrate, which partially complemented the loss of nicotianamine. In the absence of nicotianamine, Fe accumulated in the phloem. Our results show that rather than enabling the long-distance movement of Fe in the phloem (as is the case for Zn), nicotianamine facilitates the transport of Fe from the phloem to sink organs. We delimit nicotianamine function in plant reproductive biology and demonstrate that nicotianamine acts in pollen development in anthers and pollen tube passage in the carpels. Since Fe and Zn both enhance pollen germination, a lack of either metal may contribute to the reproductive defect. Our study sheds light on the physiological functions of nicotianamine.es_ES
dc.description.sponsorshipP.B. and M.S. thank the Deutsche Forschungsgemeinshaft for funding in the Arabidopsis Functional Genomics Network program (Deutsche Forschungsgemeinshaft Grant Ba 1610/6-1). The work performed by R.R.-Á. and J.A. was supported by the Spanish Ministry of Science and Innovation (Project AGL2010-16515 cofinanced by European Fund for Regional Development [Fondo Europeo de Desarrollo Regional]).es_ES
dc.language.isoenges_ES
dc.publisherAmerican Society of Plant Biologistses_ES
dc.rightsopenAccesses_ES
dc.titleNicotianamine Functions in the Phloem-Based Transport of Iron to Sink Organs, in Pollen Development and Pollen Tube Growth in Arabidopsises_ES
dc.typeartículoes_ES
dc.identifier.doi10.​1105/​tpc.​112.​099077-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp:/​/​dx.​doi.​org/​10.​1105/​tpc.​112.​099077es_ES
dc.identifier.e-issn1532-298X-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.openairetypeartículo-
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