AvrAC, a Xanthomonas campestris pv. campestris-specific type III effector, triggers ETI in Arabidopsis vasculature
| Autor: | Guy, Endrick, Chabannes, Matthieu, Hajri, Ahmed, Boureau, Tristan, Poussier, Stéphane, Arlat, Matthieu, NOEL, Laurent |
|---|---|
| Přispěvatelé: | Pathologie Végétale (PaVé), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité mixte de recherche interactions plantes-microorganismes, Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Biologie et Génétique des Interactions Plantes-Agents Pathogènes, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Montpellier (ENSA M)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Unité de recherche Pathologie végétale et phytobactériologie, Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | 22nd New Phytologist symposium, effectors in plant-microbe interactions 22nd New Phytologist symposium, effectors in plant-microbe interactions, Sep 2009, Paris, France. 1 p 22. New Phytologist Symposium 22. New Phytologist Symposium, Sep 2009, Versailles, France 22nd New Phytologist Symposium, Versailles, France, October 13-16, 2009 |
| Popis: | International audience; Xanthomonas campestris pv. campestris (Xcc) is the causal agent of black rot on Brassicae and causes disease on cabbage and Arabidopsis for instance. The avrAC gene encodes an Xcc-specific type III effector which is responsible for avirulence on Arabidopsis ecotype Col-0 exclusively when Xcc is inoculated in the leaf vasculature. PCR and dot-blot hybridization performed on a large collection of plant pathogenic bacteria revealed that avrAC is specific to Xcc. The analysis of more than 50 Xcc strainsreveals that avrAC displays a very low allelic diversity and belongs to the Xcc variable effectome. Moreover, the presence of avrAC is tightly correlated with an increase in Xcc aggressiveness on susceptible Arabidopsis and nonhost pepper plants. We show that the "Leucine-Rich Repeat" (LRR) and "Filamentation induced by cAMP" (Fic) domains are both required for avirulence on resistant Arabidopsis and aggressiveness on pepper. Interestingly, the Fic domains of the VopS and IbpA effectors from animal pathogens were recently shown to mediate protein adenylylation, a yet unknown protein posttranslational modification. Strategies developed to dissect avrAC functions in planta and to study plant vascular immunity will be presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|