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Plant Soil (2009) 321:279303 DOI 10.1007/s11104-008-9839-2
REVIEW ARTICLE
Molecular communication in the rhizosphere
Denis Faure & Danny Vereecke &
Johan H. J. Leveau
Received: 7 October 2008 /Accepted: 13 November 2008 / Published online: 6 December 2008 # Springer Science + Business Media B.V. 2008
Abstract This paper will exemplify molecular communications in the rhizosphere, especially between plants and bacteria, and between bacteria and bacteria. More specifically, we describe signalling pathways that allow bacteria to sense a wide diversity of plant signals, plants to respond to bacterial infection, and bacteria to coordinate gene expression at population and community level. Thereafter, we focus on mechanisms evolved by bacteria and plants to disturb bacterial signalling, and by bacteria to modulate
hormonal signalling in plants. Finally, the dynamics of signal exchange and its biological significance we elaborate on the cases of Rhizobium symbiosis and Agrobacterium pathogenesis.
Keywords Rhizosphere . Signal . Rhizobium . Agrobacterium . Quorum-sensing . Plant hormones . Plantbacteria interactions
Introduction
This paper will exemplify molecular communications in the rhizosphere, especially between plants and bacteria, and between bacteria and bacteria. More specifically, we describe signalling pathways that allow bacteria to sense a wide diversity of plant signals, plants to respond to bacterial infection, and bacteria to coordinate gene expression at population and community level. Thereafter, we focus on mechanisms evolved by bacteria and plants to disturb bacterial signalling, and by bacteria to modulate hormonal signalling in plants. Finally, the dynamics of signal exchange and its biological significance we elaborate on the cases of Rhizobium symbiosis and Agrobacterium pathogenesis. For a complete overview of communication in the rhizosphere, we recommend other papers that illustrate plant-plant interactions, and that give additional insights about nitrogen-fixing microorganisms, plant-driven selection of microbes, plant growth promoting microorganisms, and plant pathogens.
Responsible Editor: Yves Dessaux.
D. Faure (*)
Institut des Sciences du Vgtal,Centre national de la Recherche Scientifique, Avenue de la Terrasse,91198 Gif-sur-Yvette, Francee-mail: [email protected]
D. VereeckeDepartment of Plant Systems Biology, Flanders Institute for Biotechnology (VIB), Ghent University,Technologie park 927,9052 Zwijnaarde, Belgiume-mail: [email protected]
J. H. J. LeveauDepartment of Plant Pathology, University of California at Davis,One Shields Avenue, 476 Hutchison Hall, Davis, CA 95616, USAe-mail: [email protected]
280 Plant Soil (2009) 321:279303
Communication in the rhizosphere: mechanisms and functions
How bacteria sense plant signals
The...