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GrainGenes Reference Report: PLC-13-153

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Reference	PLC-13-153
Title	Syringolin reprograms wheat to undergo hypersensitive cell death in a compatible interaction with powdery mildew
Journal	The Plant cell
Year	2001
Volume	13
Pages	153-161
Author	Waspi U Schweizer P Dudler R
Abstract	Summary: We had previously isolated and characterized syringolin A, one of the molecular determinants secreted by Pseudomonas syringae pv syringae that is perceived by nonhost plant species such as rice. Here, we show that syringolin A is recognized by wheat and that it induces the accumulation of gene transcripts and increases protection against powdery mildew when applied before inoculation. Moreover, syringolin A essentially eradicates powdery mildew from infected wheat if applied after inoculation. This curative effect is accompanied by the induction of cell death and the reactivation of pathogenesis-related genes whose transcript levels initially accumulate after powdery mildew inoculation but then decline during the later course of infection. Because syringolin A has no fungicidal activity against a variety of fungi and its action on wheat cannot be mimicked by the fungicide cyprodinil, syringolin A is hypothesized to counteract the suppression of host defense reactions imposed by the pathogen on the colonized cells
Keyword	[ Hide all but 1 of 42 ] cell cell death compatible interaction death defense defense mechanisms determinant disease resistance erysiphe graminis f experimental infections fungal diseases fungi fungicidal activity gene gene expression host host defense increase induced resistance induction infection inoculation messenger rna mildew pathogen pathogenesis related proteins peptide powdery mildew protection pseudomonas pseudomonas syringae pseudomonas syringae pv pv syringae reactivation rice suppression syringae syringae pv syringae transcript transcript levels tritici triticum aestivum

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