IBBM   21076
INSTITUTO DE BIOTECNOLOGIA Y BIOLOGIA MOLECULAR
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Host genes involved in nodulation preference in the common bean-Rhizobium etli symbiosis
Autor/es:
AGUILAR OM,; BEKER MP; BATTAGLIA ME; BLANCO FA; ZANETTI ME; NICOLETTI K; SORIA-DIAZ, ME; GIL-SERRANO A; MEGÍAS M
Lugar:
Zaragoza (Spain)
Reunión:
Congreso; XIII Reunión Nacional de la Sociedad Española de Fijación de Nitrógeno; 2010
Resumen:
Host genes involved in nodulation preference in the common bean-Rhizobium etli symbiosis Aguilar OM1*, Beker MP1, Battaglia ME1, Zanetti ME1, Blanco FA1, Nicoletti K1, Soria-Diaz, ME2, Gil-Serrano A2, Megías M3 1Instituto de Biotecnología y Biología Molecular, CONICET-La Plata, Facultad Ciencias Exactas, Universidad Nacional de La Plata, 1900-La Plata, Argentina; 2Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41071 Sevilla, Spain; 3Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41071 Sevilla, Spain.  *aguilar@biol.unlp.edu.ar Summary Common beans (Phaseolus vulgaris) and rhizobia coevolved in the two main centres of host domestication. In order to characterize the symbiosis, the physiology of nodulation was examined in combinations of host x lineages of Rhizobium etli. Analysis of nodulation factors produced by strains of R. etli from both centres of diversification and competitiveness by nolL mutant, suggested that factors other than Nod factors (NFs) might be involved in strain preference. A host gene coding for a subunit of the NF-Y transcriptional factor was identified in the Mesomerican beans and found to be activated in response to inoculation with its cognate rhizobia