Indole-3-acetonitrile production from indole glucosinolates deters oviposition by Pieris rapae

Plant Physiology
Martin de VosGeorg Jander

Abstract

Like many crucifer-specialist herbivores, Pieris rapae uses the presence of glucosinolates as a signal for oviposition and larval feeding. Arabidopsis thaliana glucosinolate-related mutants provide a unique resource for studying the in vivo role of these compounds in affecting P. rapae oviposition. Low indole glucosinolate cyp79B2 cyp79B3 mutants received fewer eggs than wild type, confirming prior research showing that indole glucosinolates are an important oviposition cue. Transgenic plants overexpressing epithiospecifier protein, which shifts glucosinolate breakdown toward nitrile formation, are less attractive to ovipositing P. rapae females. Exogenous application of indol-3-ylmethylglucosinolate breakdown products to cyp79B2 cyp79B3 mutants showed that oviposition was increased by indole-3-carbinol and decreased by indole-3-acetonitrile (IAN). P. rapae larvae tolerate a cruciferous diet by using a gut enzyme to redirect glucosinolate breakdown toward less toxic nitriles, including IAN, rather than isothiocyanates. The presence of IAN in larval regurgitant contributes to reduced oviposition by adult females on larvae-infested plants. Therefore, production of nitriles via epithiospecifier protein in cruciferous plants, which...Continue Reading

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Citations

Sep 18, 2012·Applied Biochemistry and Biotechnology·Venkidasamy BaskarSe Won Park
Mar 27, 2012·Journal of Experimental Botany·Yoshihiro Mano, Keiichirou Nemoto
Mar 5, 2008·Plant Physiology·Georg Jander, Gregg Howe
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Dec 20, 2013·Oecologia·Serena Santolamazza-CarboneMaría Elena Cartea
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Jul 10, 2010·Journal of Chemical Ecology·René MüllerGeorg Jander
Jun 30, 2014·Journal of Chemical Ecology·Raphaël GrouxPhilippe Reymond
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Mar 13, 2012·Phytochemistry·Niels Agerbirk, Carl Erik Olsen
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Apr 26, 2011·Current Opinion in Plant Biology·Juergen Kroymann
Oct 7, 2015·Trends in Microbiology·Jin-Hyung LeeJintae Lee
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Mar 17, 2010·The Plant Journal : for Cell and Molecular Biology·Friederike BruessowPhilippe Reymond
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Mar 28, 2018·Plant & Cell Physiology·Shaoqun ZhouGeorg Jander
Jan 1, 2010·The Arabidopsis Book·Ute Wittstock, Meike Burow

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