title: Rhizobium-legume symbioses: the crucial role of plant immunity.
abstract: New research results have significantly revised our understanding of the rhizobium-legume infection process. For example, Nod factors (NFs), previously thought to be absolutely essential for this symbiosis, were shown to be dispensable under particular conditions. Similarly, an NF receptor, previously considered to be solely involved in symbiosis, was shown to function during plant pathogen infections. Indeed, there is a growing realization that plant innate immunity is a crucial component in the establishment and maintenance of symbiosis. We review here the factors involved in the suppression of plant immunity during rhizobium-legume symbiosis, and we attempt to place this information into context with the most recent and sometimes surprising research results.
authors.affiliation: Institut des Sciences du Végétal, Centre National de la Recherche Scientifique (CNRS), Saclay Plant Sciences, Avenue de la terrasse, 91198 Gif-sur-Yvette CEDEX, France. Electronic address: benjamin.gourion@isv.cnrs-gif.fr.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Gourion
authors.affiliation: Institut des Sciences du Végétal, Centre National de la Recherche Scientifique (CNRS), Saclay Plant Sciences, Avenue de la terrasse, 91198 Gif-sur-Yvette CEDEX, France.
authors.forename: Fathi
authors.initials: F
authors.lastname: Berrabah
authors.affiliation: Institut des Sciences du Végétal, Centre National de la Recherche Scientifique (CNRS), Saclay Plant Sciences, Avenue de la terrasse, 91198 Gif-sur-Yvette CEDEX, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Ratet
authors.affiliation: Divisions of Plant Science and Biochemistry, National Center for Soybean Biotechnology, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65203, USA.
authors.forename: Gary
authors.initials: G
authors.lastname: Stacey
mesh_terms: D007887:Fabaceae / Q000276:immunology* / Q000382:microbiology*; D057865:Plant Immunity; D012231:Rhizobium / Q000502:physiology*; D013559:Symbiosis
keywords: ETI; MTI; immunity; intracellular defenses; nod factors; rhizobium–legume symbiosis