Insect oral secretions suppress wound-induced responses in Arabidopsis.
Détails
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Etat: Public
Version: de l'auteur⸱e
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_E57E3912DA5D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Insect oral secretions suppress wound-induced responses in Arabidopsis.
Périodique
Journal of Experimental Botany
ISSN
1460-2431 (Electronic)
ISSN-L
0022-0957
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
63
Numéro
2
Pages
727-737
Langue
anglais
Résumé
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.
Mots-clé
Arabidopsis thaliana, defence suppression, gene expression, insect oral secretions, wounding
Pubmed
Web of science
Open Access
Oui
Création de la notice
23/01/2012 14:45
Dernière modification de la notice
20/08/2019 16:08