Iron distribution through the developmental stages of Medicago truncatula nodules.

Rodríguez-Haas, Benjamín; Finney, Lydia; Vogt, Stefan; Gonzalez-Melendi de Leon, Pablo; Imperial Ródenas, Juan y Gonzalez Guerrero, Manuel (2013). Iron distribution through the developmental stages of Medicago truncatula nodules.. "Metallomics" (n. 5); pp. 1247-1253. ISSN 1756-5901. https://doi.org/10.1039/C3MT00060E.

Descripción

Título: Iron distribution through the developmental stages of Medicago truncatula nodules.
Autor/es:
  • Rodríguez-Haas, Benjamín
  • Finney, Lydia
  • Vogt, Stefan
  • Gonzalez-Melendi de Leon, Pablo
  • Imperial Ródenas, Juan
  • Gonzalez Guerrero, Manuel
Tipo de Documento: Artículo
Título de Revista/Publicación: Metallomics
Fecha: Abril 2013
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Biotecnologia [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Paramount to symbiotic nitrogen fixation (SNF) is the synthesis of a number of metalloenzymes that use iron as a critical component of their catalytical core. Since this process is carried out by endosymbiotic rhizobia living in legume root nodules, the mechanisms involved in iron delivery to the rhizobia-containing cells are critical for SNF. In order to gain insight into iron transport to the nodule, we have used synchrotron-based X-ray fluorescence to determine the spatio-temporal distribution of this metal in nodules of the legume Medicago truncatula with hitherto unattained sensitivity and resolution. The data support a model in which iron is released from the vasculature into the apoplast of the infection/differentiation zone of the nodule (zone II). The infected cell subsequently takes up this apoplastic iron and delivers it to the symbiosome and the secretory system to synthesize ferroproteins. Upon senescence, iron is relocated to the vasculature to be reused by the shoot. These observations highlight the important role of yet to be discovered metal transporters in iron compartmentalization in the nodule and in the recovery of an essential and scarce nutrient for flowering and seed production.

Más información

ID de Registro: 26858
Identificador DC: http://oa.upm.es/26858/
Identificador OAI: oai:oa.upm.es:26858
Identificador DOI: 10.1039/C3MT00060E
URL Oficial: http://pubs.rsc.org/en/content/articlelanding/2013/mt/c3mt00060e#!divAbstract
Depositado por: Memoria Investigacion
Depositado el: 20 Jun 2014 16:54
Ultima Modificación: 22 Sep 2014 11:43
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