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J Exp Bot

Title:		Insect oral secretions suppress wound-induced responses in Arabidopsis
Author(s):		Consales F; Schweizer F; Erb M; Gouhier-Darimont C; Bodenhausen N; Bruessow F; Sobhy I; Reymond P;
Address:		"Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland"
Journal Title:		J Exp Bot
Year:		2012
Volume:		20111011
Issue:		2
Page Number:		727 - 737
DOI:		10.1093/jxb/err308
ISSN/ISBN:		1460-2431 (Electronic) 0022-0957 (Print) 0022-0957 (Linking)
Abstract:		"The induction of plant defences and their subsequent suppression by insects is thought to be an important factor in the evolutionary arms race between plants and herbivores. Although insect oral secretions (OS) contain elicitors that trigger plant immunity, little is known about the suppressors of plant defences. The Arabidopsis thaliana transcriptome was analysed in response to wounding and OS treatment. The expression of several wound-inducible genes was suppressed after the application of OS from two lepidopteran herbivores, Pieris brassicae and Spodoptera littoralis. This inhibition was correlated with enhanced S. littoralis larval growth, pointing to an effective role of insect OS in suppressing plant defences. Two genes, an ERF/AP2 transcription factor and a proteinase inhibitor, were then studied in more detail. OS-induced suppression lasted for at least 48 h, was independent of the jasmonate or salicylate pathways, and was not due to known elicitors. Interestingly, insect OS attenuated leaf water loss, suggesting that insects have evolved mechanisms to interfere with the induction of water-stress-related defences"
Keywords:		"Animals Arabidopsis/genetics/parasitology/*physiology Biological Assay Butterflies/*physiology Cyclopentanes/metabolism Gene Expression Profiling Gene Expression Regulation, Plant/*genetics Herbivory Larva/physiology Mouth/metabolism Oligonucleotide Array;"
Notes:		"MedlineConsales, Floriane Schweizer, Fabian Erb, Matthias Gouhier-Darimont, Caroline Bodenhausen, Natacha Bruessow, Friederike Sobhy, Islam Reymond, Philippe eng Research Support, Non-U.S. Gov't England 2011/10/14 J Exp Bot. 2012 Jan; 63(2):727-37. doi: 10.1093/jxb/err308. Epub 2011 Oct 11"