PMID: 11925049Apr 2, 2002Paper

Evidence for regulation of resistance in Arabidopsis to Egyptian cotton worm by salicylic and jasmonic acid signaling pathways

Planta
Henrik U StotzT Mitchell-Olds

Abstract

Signaling cross-talk between wound- and pathogen-response pathways influences resistance of plants to insects and disease. To elucidate potential interactions between salicylic acid (SA) and jasmonic acid (JA) defense pathways, we exploited the availability of characterized mutants of Arabidopsis thaliana (L.) Heynh. and monitored resistance to Egyptian cotton worm (Spodoptera littoralis Boisd.; Lepidoptera: Noctuidae). This generalist herbivore is sensitive to induced plant defense pathways and is thus a useful model for a mechanistic analysis of insect resistance. As expected, treatment of wild-type Arabidopsis with JA enhanced resistance to Egyptian cotton worm. Conversely, the coil mutant, with a deficiency in the JA response pathway, was more susceptible to Egyptian cotton worm than wild-type Arabidopsis. By contrast, the nprl mutant, with defects in systemic disease resistance, exhibited enhanced resistance to Egyptian cotton worm. Pretreatment with SA significantly reduced this enhanced resistance of nprl plants but had no influence on the resistance of wild-type plants. However, exogenous SA reduced the amount of JA that Egyptian cotton worm induced in both npr1 mutant and wild-type plants. Thus, this generalist herbivo...Continue Reading

Citations

Sep 20, 2005·Molecular Plant-microbe Interactions : MPMI·Martin De VosCorné M J Pieterse
Nov 6, 2007·Molecular Plant-microbe Interactions : MPMI·Natacha Bodenhausen, Philippe Reymond
Jun 7, 2008·Molecular Plant-microbe Interactions : MPMI·Vivian R Van OostenCorné M J Pieterse
Dec 23, 2004·Journal of Cardiovascular Pharmacology·Muhammad Nabeel Ghayur, Anwarul Hassan Gilani
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Nov 22, 2017·The Plant Journal : for Cell and Molecular Biology·Elia StahlPhilippe Reymond
Apr 25, 2021·Applied and Environmental Microbiology·Tobias B LöserMonika Maurhofer

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