Xanthomonas campestris pv. vesicatoria Secretes Proteases and Xylanases via the Xps Type II Secretion System and Outer Membrane Vesicles. - Laboratoire des Interactions Plantes Microbes Environnement Accéder directement au contenu
Article Dans Une Revue Journal of Bacteriology Année : 2015

Xanthomonas campestris pv. vesicatoria Secretes Proteases and Xylanases via the Xps Type II Secretion System and Outer Membrane Vesicles.

Résumé

The virulence of plant-pathogenic bacteria often depends on TS2 systems, which secrete degradative enzymes into the extracellular milieu. T2S substrates are being studied in several plant-pathogenic bacteria, including Xanthomonas campestris pv. vesicatoria, which causes bacterial spot disease in tomato and pepper. Here, we show that the T2S system from X. campestris pv. vesicatoria secretes virulence-associated xylanases, a predicted protease, and a lipase. Secretion assays with the related pathogen X. campestris pv. campestris revealed important differences in the T2S substrate specificities of the two pathogens. Furthermore, electron microscopy showed that T2S substrates from X. campestris pv. vesicatoria are targeted to outer membrane vesicles (OMVs). Our results, therefore, suggest that OMVs provide an alternative transport route for type II secreted extracellular enzymes.
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Dates et versions

hal-02633278 , version 1 (27-05-2020)

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Magali Sole, Felix Scheibner, Anne-Katrin Hoffmeister, Nadine Hartmann, Gerd Hause, et al.. Xanthomonas campestris pv. vesicatoria Secretes Proteases and Xylanases via the Xps Type II Secretion System and Outer Membrane Vesicles.. Journal of Bacteriology, 2015, 197 (17), pp.2879-93. ⟨10.1128/JB.00322-15⟩. ⟨hal-02633278⟩
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