Concentration of osmoregulated periplasmic glucans (OPGs) modulates the activation level of the RcsCD RcsB phosphorelay in the phytopathogen bacteria Dickeya dadantii

Autor: Bontemps-Gallo, Sébastien, Madec, Edwige, Dondeyne, Jacqueline, Delrue, Brigitte, Robbe-Masselot, Catherine, Vidal, Olivier, Prouvost, Anne-France, Boussemart, Gilles, Bohin, Jean-Pierre, Lacroix, Jean-Marie
Přispěvatelé: Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 (UGSF), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Unité de Glycobiologie Structurale et Fonctionnelle UMR 8576 (UGSF), Institut National de la Recherche Agronomique (INRA)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Environmental Microbiology
Environmental Microbiology, Wiley-Blackwell, 2013, Plant–Microbe Interactions, 15 (3), pp.881-894. ⟨10.1111/1462-2920.12054⟩
Environmental Microbiology, Society for Applied Microbiology and Wiley-Blackwell, 2013, Plant–Microbe Interactions, 15 (3), pp.881-894. ⟨10.1111/1462-2920.12054⟩
Environmental Microbiology, 2013, Plant–Microbe Interactions, 15 (3), pp.881-894. ⟨10.1111/1462-2920.12054⟩
ISSN: 1462-2912
1462-2920
DOI: 10.1111/1462-2920.12054⟩
Popis: International audience; Osmoregulated periplasmic glucans (OPGs) are general constituents of many Proteobacteria. Synthesis of these oligosaccharides is repressed by increased osmolarity of the medium. OPGs are important factors required for full virulence in many zoo-or phytopathogens including Dickeya dadantii. The phytopathogen enterobacterium D. dadantii causes soft-rot disease on a wide range of plant species. The total loss of virulence of opg-negative strains of D. dadantii is linked to the constitutive activation of the RcsCD RcsB phosphorelay highlighting relationship between this phosphorelay and OPGs. Here we show that OPGs control the RcsCD RcsB activation in a concentration-dependent manner, are required for proper activation of this phosphorelay by medium osmolarity, and a high concentration of OPGs in planta is maintained to achieve the low level of activation of the RcsCD RcsB phosphorelay required for full virulence in D. dadantii.
Databáze: OpenAIRE
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