INVESTIGADORES
BLANCO Flavio Antonio
artículos
Título:
How legumes recognize rhizobia
Autor/es:
DALLA VIA, VIRGINIA; ZANETTI, ME; BLANCO, FA
Revista:
Plant Signaling and Behavior
Editorial:
Taylor and Francis
Referencias:
Lugar: Austin, TX; Año: 2015
Resumen:
Legume plants have developed the capacity to establish symbiotic interactionswith soil bacteria (known as rhizobia) that can convert N2 to molecular forms thatare incorporated into the plant metabolism. The first step of this relationship isthe recognition of bacteria by the plant, which allows to distinguish potentiallyharmful species from symbiotic partners. The main molecular determinant of thissymbiotic interaction is the Nod Factor, a diffusible lipochitooligosaccharidemolecule produced by rhizobia and perceived by LysM receptor kinases;however, other important molecules involved in the specific recognition haveemerged over the years. Secreted exopolysaccharides and thelipopolysaccharides present in the bacterial cell wall have been proposed to actas signaling molecules, triggering the expression of specific genes related to thesymbiotic process. In this review we will briefly discuss how transcriptomicanalysis are helping to understand how multiple signaling pathways, triggered bythe perception of different molecules produced by rhizobia, control the geneticprograms of root nodule organogenesis and bacterial infection. This knowledgecan help to understand how legumes have evolved to recognize and establishcomplex ecological relationships with particular species and strains of rhizobia,adjusting gene expression in response to identity determinants of bacteria.