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Involvement of acetosyringone in plant-pathogen recognition.

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 1.5h 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.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Baker CJ,Mock NM,Whitaker BD,Roberts DP,Rice CP,Deahl KL,Aver'yanov AA

doi

10.1016/j.bbrc.2004.12.153

subject

Has Abstract

pub_date

2005-03-04 00:00:00

pages

130-6

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(04)02983-3

journal_volume

328

pub_type

杂志文章

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