Differential effectiveness of microbially induced resistance against herbivorous insects in Arabidopsis.

Détails

ID Serval
serval:BIB_93FD2ABCBBF5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Differential effectiveness of microbially induced resistance against herbivorous insects in Arabidopsis.
Périodique
Molecular Plant-Microbe Interactions
Auteur(s)
Van Oosten V.R., Bodenhausen N., Reymond P., Van Pelt J.A., Van Loon L.C., Dicke M., Pieterse C.M.
ISSN
0894-0282[print], 0894-0282[linking]
Statut éditorial
Publié
Date de publication
2008
Volume
21
Numéro
7
Pages
919-930
Langue
anglais
Résumé
Rhizobacteria-induced systemic resistance (ISR) and pathogen-induced systemic acquired resistance (SAR) have a broad, yet partly distinct, range of effectiveness against pathogenic microorganisms. Here, we investigated the effectiveness of ISR and SAR in Arabidopsis against the tissue-chewing insects Pieris rapae and Spodoptera exigua. Resistance against insects consists of direct defense, such as the production of toxins and feeding deterrents and indirect defense such as the production of plant volatiles that attract carnivorous enemies of the herbivores. Wind-tunnel experiments revealed that ISR and SAR did not affect herbivore-induced attraction of the parasitic wasp Cotesia rubecula (indirect defense). By contrast, ISR and SAR significantly reduced growth and development of the generalist herbivore S. exigua, although not that of the specialist P. rapae. This enhanced direct defense against S. exigua was associated with potentiated expression of the defense-related genes PDF1.2 and HEL. Expression profiling using a dedicated cDNA microarray revealed four additional, differentially primed genes in microbially induced S. exigua-challenged plants, three of which encode a lipid-transfer protein. Together, these results indicate that microbially induced plants are differentially primed for enhanced insect-responsive gene expression that is associated with increased direct defense against the generalist S. exigua but not against the specialist P. rapae.
Mots-clé
Animals, Arabidopsis/genetics, Arabidopsis/microbiology, Cyclopentanes/metabolism, Gene Expression Profiling, Gene Expression Regulation, Plant, Genes, Plant, Host-Pathogen Interactions/genetics, Host-Pathogen Interactions/physiology, Insects/pathogenicity, Lepidoptera/pathogenicity, Mutation, Oligonucleotide Array Sequence Analysis, Oxylipins/metabolism, Plant Diseases/genetics, Plant Diseases/microbiology, Plants, Genetically Modified, Pseudomonas/genetics, Salicylic Acid/metabolism, Signal Transduction, Spodoptera/pathogenicity, Wasps/pathogenicity
Pubmed
Web of science
Création de la notice
27/03/2008 15:45
Dernière modification de la notice
03/03/2018 19:36
Données d'usage