Differential Effectiveness of Microbially Induced Resistance Against Herbivorous Insects in Arabidopsis

Autor: Vivian R. Van Oosten, L.C. van Loon, Johan A. Van Pelt, Marcel Dicke, Corné M. J. Pieterse, Natacha Bodenhausen, Philippe Reymond
Přispěvatelé: Phytopathology, Dep Biologie
Rok vydání: 2008
Předmět:
Insecta
Physiology
Wasps
Arabidopsis
Pieris rapae
plant pathogens
defense signaling pathways
induced resistance
chemistry.chemical_compound
Biologie/Milieukunde (BIOL)
Gene Expression Regulation
Plant
Plant defense against herbivory
Pseudomonas syringae
Laboratory of Entomology
parasitoid cotesia-rubecula
Plant biology (Botany)
Oligonucleotide Array Sequence Analysis
biology
EPS-2
Jasmonic acid
General Medicine
Plants
Genetically Modified
Life sciences
Lepidoptera
induced systemic resistance
Host-Pathogen Interactions
cross-talk
plant immunity
Salicylic Acid
Biologie
Systemic acquired resistance
SAR
Signal Transduction
Cyclopentanes
Spodoptera
Genes
Plant
pseudomonas-syringae
Microbiology
plant defense
Pseudomonas
Botany
Exigua
Animals
Oxylipins
ISR
Plant Diseases
Gene Expression Profiling
jasmonic acid
fungi
Laboratorium voor Entomologie
biology.organism_classification
gene-expression
salicylic-acid
lipid-transfer proteins
chemistry
Mutation
herbivorous insects
Agronomy and Crop Science
Zdroj: Molecular Plant-Microbe Interactions 21 (2008) 7
Molecular Plant-Microbe Interactions, 21(7), 919. American Phytopathological Society
Molecular Plant-Microbe Interactions, 21(7), 919-930
ISSN: 1943-7706
0894-0282
DOI: 10.1094/mpmi-21-7-0919
Popis: 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.
Databáze: OpenAIRE
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