Using Ecology, Physiology, and Genomics to Understand Host Specificity in Xanthomonas.

Ralf Koebnik, Christian Vernière, Valérie Verdier, Boris Szurek, Monique Royer, Isabelle Robène, Adrien Rieux, Olivier Pruvost, Perrine Portier, Isabelle Pieretti, Laurent D Noël, Emmanuelle Lauber, Marie-Agnès Jacques, Lionel Gagnevin, Marion Fischer-Le Saux, Nicolas Denancé, Armelle Darrasse, Stéphane Cociancich, Nicolas W G Chen, Sophie Cesbron, Sébastien Carrère, Tristan Boureau, Alice Boulanger, Matthieu Arlat

Journal: Annual review of phytopathology 2017;54():163-87

PMID: 27296145

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Abstract

How pathogens coevolve with and adapt to their hosts are critical to understanding how host jumps and/or acquisition of novel traits can lead to new disease emergences. The Xanthomonas genus includes Gram-negative plant-pathogenic bacteria that collectively infect a broad range of crops and wild plant species. However, individual Xanthomonas strains usually cause disease on only a few plant species and are highly adapted to their hosts, making them pertinent models to study host specificity. This review summarizes our current understanding of the molecular basis of host specificity in the Xanthomonas genus, with a particular focus on the ecology, physiology, and pathogenicity of the bacterium. Despite our limited understanding of the basis of host specificity, type III effectors, microbe-associated molecular patterns, lipopolysaccharides, transcriptional regulators, and chemotactic sensors emerge as key determinants for shaping host specificity.

Address: INRA, UMR 1345 Institut de Recherche en Horticulture et Semences (IRHS), F-49071 Beaucouzé, France; email: [email protected] , [email protected] , [email protected] , [email protected] , [email protected] , [email protected].; INRA, UMR 441 Laboratoire des Interactions Plantes Micro-organismes (LIPM), F-31326 Castanet-Tolosan, France; email: [email protected] , [email protected] , [email protected] , [email protected] , [email protected].; CNRS, UMR 2594 Laboratoire des Interactions Plantes Micro-organismes (LIPM), F-31326 Castanet-Tolosan, France.; Université de Toulouse, Université Paul Sabatier, F-31062 Toulouse, France.; Université Angers, UMR 1345 Institut de Recherche en Horticulture et Semences (IRHS), F-49071 Beaucouzé, France; email: [email protected].; Agrocampus Ouest, UMR 1345 Institut de Recherche en Horticulture et Semences (IRHS), F-49071 Beaucouzé, France; email: [email protected].; CIRAD, UMR Biologie et Génétique des Interactions Plante-Parasite (BGPI), F-34398 Montpellier, France; email: [email protected] , [email protected] , [email protected] , [email protected].; IRD, CIRAD, University of Montpellier, Interactions Plantes Micro-organismes Environnement (IPME), F-34394 Montpellier, France; email: [email protected] , [email protected] , [email protected] , [email protected].; CIRAD, UMR Peuplements Végétaux et Bioagresseurs en Milieu Tropical (PVBMT), F-97410 Saint-Pierre, La Réunion, France; email: [email protected] , [email protected] , [email protected].

DOI: 10.1146/annurev-phyto-080615-100147

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MeSH Terms: Genome, Bacterial, Host Specificity, Plant Diseases, Xanthomonas