Exogenous application of methyl jasmonate elicits defenses in Norway spruce (Picea abies) and reduces host colonization by the bark beetle Ips typographus

Oecologia
Nadir ErbilginJonathan Gershenzon

Abstract

The terpenoid and phenolic constituents of conifers have been implicated in protecting trees from infestation by bark beetles and phytopathogenic fungi, but it has been difficult to prove these defensive roles under natural conditions. We used methyl jasmonate, a well-known inducer of plant defense responses, to manipulate the biochemistry and anatomy of mature Picea abies (Norway spruce) trees and to test their resistance to attack by Ips typographus (the spruce bark beetle). Bark sections of P. abies treated with methyl jasmonate had significantly less I. typographus colonization than bark sections in the controls and exhibited shorter parental galleries and fewer eggs had been deposited. The numbers of beetles that emerged and mean dry weight per beetle were also significantly lower in methyl jasmonate-treated bark. In addition, fewer beetles were attracted to conspecifics tunneling in methyl jasmonate-treated bark. Stem sections of P. abies treated with methyl jasmonate had an increased number of traumatic resin ducts and a higher concentration of terpenes than untreated sections, whereas the concentration of soluble phenolics did not differ between treatments. The increased amount of terpenoid resin present in methyl jasmo...Continue Reading

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Citations

May 12, 2011·Biological Reviews of the Cambridge Philosophical Society·Kyrre KausrudNils Chr Stenseth
Jan 2, 2013·Proceedings of the National Academy of Sciences of the United States of America·Kenneth F RaffaPhilip A Townsend
Jul 7, 2009·Annual Review of Plant Biology·James Kirby, Jay D Keasling
Jun 20, 2007·Nature Chemical Biology·Jonathan Gershenzon, Natalia Dudareva
Dec 15, 2015·Journal of Chemical Ecology·Ken Keefover-RingKenneth F Raffa
Nov 22, 2007·Phytochemistry·Sheng-Hong LiBernd Schneider
Nov 15, 2012·Chembiochem : a European Journal of Chemical Biology·Sheng-Hong LiBernd Schneider
Dec 18, 2009·The New Phytologist·Alieta EylesCaroline Mohammed
Sep 26, 2006·Phytochemistry·Christopher I Keeling, Jörg Bohlmann
May 28, 2015·Journal of Chemical Ecology·Spencer TaftNadir Erbilgin
Mar 30, 2004·Environmental Pollution·Wojciech GrodzkiYaroslav Slobodyan
Nov 30, 2016·Journal of Chemical Ecology·Lina LundborgAnna-Karin Borg-Karlson
May 26, 2017·Molecular Ecology·Aileen BerasateguiAxel Schmidt
Jul 10, 2018·Journal of Experimental Botany·Yu-Chen ChuangHong-Hwa Chen

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