Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 371136
Title Differential effectiveness of microbially induced resistance against herbivorous insects in Arabidopsis
Author(s) Oosten, V.R. van; Bodenhausen, N.; Reymond, Ph.; Pelt, J.A. van; Loon, L.C. van; Dicke, M.; Pieterse, C.M.J.
Source Molecular Plant-Microbe Interactions 21 (2008)7. - ISSN 0894-0282 - p. 919 - 930.
Department(s) Laboratory of Entomology
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) induced systemic resistance - lipid-transfer proteins - parasitoid cotesia-rubecula - defense signaling pathways - jasmonic acid - salicylic-acid - pseudomonas-syringae - gene-expression - plant defense - cross-talk
Abstract 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.
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