Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Medicago truncatula Zinc-Iron Permease6 provides zinc to rhizobiainfected nodule cells
Research Areas
  • Molecular, cellular and genetic biology,
  • Microbiology
Symbiotic nitrogen fixation (SNF) is one of the main pathways for nitrogen entry in the biosphere and a likely alternative to the overuse of polluting and expensive synthetic fertilizers. Its principal form is the symbiosis between legumes and a group of bacteria known as rhizobia. After a complex process triggered by bacterial and plant signals, new organs, the root nodules, are developed. These rhizobia differentiate into bacteroids surrounded by the plant-derived symbiosome membrane, and are able to convert, fix, N2 into NH4 +. As in other endosymbiotic relationships, there is an intense nutrient trafficking between the symbionts (Udvardi and Poole, 2013). The ammonia fixed by bacteroids is transferred to the host plant through the symbiosome membrane, in exchange for photosynthates and mineral nutrients (phosphate, sulfur, iron, zinc?) provided by the plant (González-Guerrero et al. 2014; 2016). In spite of the importance that zinc has on SNF, it currently remains unknown how this micronutrient is delivered to nitrogen fixing organs, and its function therein. It has been proposed that zinc should be transported through vascular bundles to the aposplast of the apical zone of the nodule, where a zinc transporter located at the plasma membrane of infected cells would mediate the acquistion of zinc for nitrogen fixation (González-Guerrero et al. 2014; 2016).
International Plant Nutrition Colloquium
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End Date
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International Plant Nutrition Colloquium
  • Autor: Isidro Abreu Sanchez (UPM)
  • Autor: Angela Enriqueta Saez Somolinos (UPM)
  • Autor: M del Rosario Castro Rodriguez (UPM)
  • Autor: Viviana Pamela Escudero Welsch (UPM)
  • Autor: Marta Albareda Contreras (UPM)
  • Autor: Juan Imperial Ródenas (UPM)
  • Autor: Manuel Gonzalez Guerrero (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: BIOLOGÍA MOLECULAR Y COMPUTACIONAL
  • Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
  • Departamento: Biotecnología - Biología Vegetal
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)