title: Jasmonic acid protects etiolated seedlings of Arabidopsis thaliana against herbivorous arthropods.
abstract: Seed predators can cause mass ingestion of larger seed populations. As well, herbivorous arthropods attempt to attack etiolated seedlings and chose the apical hook for ingestion, aimed at dropping the cotyledons for later consumption. Etiolated seedlings, as we show here, have established an efficient mechanism of protecting their Achilles' heel against these predators, however. Evidence is provided for a role of jasmonic acid (JA) in this largely uncharacterized plant-herbivore interaction during skotomorphogenesis and that this comprises the temporally and spatially tightly controlled synthesis of a cysteine protease inhibitors of the Kunitz family. Interestingly, the same Kunitz protease inhibitor was found to be expressed in flowers of Arabidopsis where endogenous JA levels are high for fertility. Because both the apical hook and inflorescences were preferred isopod targets in JA-deficient plants that could be rescued by exogenously administered JA, our data identify a JA-dependent mechanism of plant arthropod deterrence that is recalled in different organs and at quite different times of plant development.
authors.affiliation: a Laboratoire de Génétique Moléculaire des Plantes and Biologie Environnementale et Systémique (BEeSy), Université Grenoble-Alpes , Grenoble cedex , France.
authors.forename: Edouard
authors.initials: E
authors.lastname: Boex-Fontvieille
authors.affiliation: b Department of Agricultural and Environmental Sciences , Pee Dee Research and Education Center, Clemson University , Florence , SC , USA.|c Department of Crop and Soil Sciences , School of Molecular Biosciences, and Center for Reproductive Biology, Washington State University , Pullman , WA , USA.
authors.forename: Sachin
authors.initials: S
authors.lastname: Rustgi
authors.affiliation: c Department of Crop and Soil Sciences , School of Molecular Biosciences, and Center for Reproductive Biology, Washington State University , Pullman , WA , USA.
authors.forename: Diter
authors.initials: D
authors.lastname: Von Wettstein
authors.affiliation: d Centro de Biotecnología y Genómica de Plantas, Universidad Politecnica de Madrid (UPM)-Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), Campus de Montegancedo , Pozuelo de Alarcón , Madrid , Spain.
authors.forename: Stephan
authors.initials: S
authors.lastname: Pollmann
authors.affiliation: a Laboratoire de Génétique Moléculaire des Plantes and Biologie Environnementale et Systémique (BEeSy), Université Grenoble-Alpes , Grenoble cedex , France.
authors.forename: Steffen
authors.initials: S
authors.lastname: Reinbothe
authors.affiliation: a Laboratoire de Génétique Moléculaire des Plantes and Biologie Environnementale et Systémique (BEeSy), Université Grenoble-Alpes , Grenoble cedex , France.
authors.forename: Christiane
authors.initials: C
authors.lastname: Reinbothe
mesh_terms: D000085:Acetates / Q000494:pharmacology; D000818:Animals; D017360:Arabidopsis / Q000187:drug effects / Q000378:metabolism* / Q000469:parasitology*; D001181:Arthropods / Q000472:pathogenicity*; D003517:Cyclopentanes / Q000494:pharmacology*; D064527:Etiolation / Q000187:drug effects; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D060434:Herbivory / Q000502:physiology*; D054883:Oxylipins / Q000494:pharmacology*; D036226:Seedlings / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000085:Acetates; D003517:Cyclopentanes; D054883:Oxylipins; C011006:jasmonic acid; C072239:methyl jasmonate
keywords: Oxilipins; plant defence; skotmorphogenesis