Titre du document / Document title
Involvement of acetosyringone in plant-pathogen recognition
Auteur(s) / Author(s)BAKER C. Jacyn
MOCK Norton M.
WHITAKER Bruce D.
ROBERTS Daniel P.
RICE Clifford P.
DEAHL Kenneth L.
AVER'YANOV Andrey A.
Résumé / Abstract
In this study, acetosyringone was identified as one of the major extracellular phenolics in tobacco suspension cells and was shown to have bioactive properties that influence early events in plant-bacterial pathogenesis. In our model system, tobacco cell suspensions treated with bacterial isolate Pseudomonas syringae WT (HR+) undergo a resistant interaction characterized by a burst in oxygen uptake several hours after inoculation. When the extracellular concentration of acetosyringone in tobacco cell suspensions was supplemented with exogenous acetosyringone, the burst in oxygen uptake occurred as much as 1.5 h earlier. The exogenous acetosyringone had no effect on tobacco suspensions undergoing susceptible interactions with Pseudomonas tabaci or a non-resistant interaction with a near-isogenic mutant derivative of isolate P. syringae WT (HR+). Resistant interactions with isolate P. syringae WT (HR+) also produce an oxidative burst which oxidizes the extracellular acetosyringone. This study demonstrates that acetosyringone, and likely other extracellular phenolics, may have bioactive characteristics that can influence plant-bacterial pathogenesis.
Revue / Journal TitleBiochemical and biophysical research communications
Source / Source
2005, vol. 328, no
1, pp. 130-136 [7 page(s) (article)]
Langue / Language
Editeur / Publisher
Elsevier, Amsterdam, PAYS-BAS
Localisation / Location
INIST-CNRS, Cote INIST : 8252, 35400012939527.0200
Nº notice refdoc (ud4) : 16656426