Volatile dose and exposure time impact perception in neighboring plants.

Journal of Chemical Ecology
P Saraí Girón-CalvaMartin Heil

Abstract

Volatiles emitted from stressed plants can induce resistance in healthy neighbors. It remains unknown, however, how plants perceive volatiles and convert them into internal signals. We exposed lima bean (Phaseolus lunatus L.) to different concentrations of either of two volatiles, nonanal and methyl salicylate (MeSA), over 6 or 24 h. Plant resistance to the bacterial pathogen, Pseudomonas syringae, was increased significantly after exposure to a headspace with two concentrations of nonanal for 6 h, and the same pattern emerged after an exposure over 24 h. By contrast, exposure to a low concentration of MeSA over 6 h did not significantly reduce bacterial infections, whereas exposure to the same concentration over 24 h significantly enhanced resistance. The dose-response relation that was apparent after 6 h of MeSA exposure disappeared in the 24 h treatment, in which the three tested concentrations caused indistinguishable, high levels of resistance to P. syringae. A low concentration of a potentially resistance-enhancing volatile sufficed to cause resistance to pathogens in the receiver plant only after long exposure time. Plant-plant signaling appears to involve the accumulation of volatiles in the receiver.

References

Apr 28, 2001·FEMS Microbiology Letters·G BisignanoA Saija
Oct 9, 2009·Plant Physiology·Hwe-Su YiChoong-Min Ryu
Oct 20, 2009·Trends in Ecology & Evolution·Martin Heil, Richard Karban
Jun 18, 2010·Biology Letters·Martin Heil, Rosa M Adame-Álvarez
Jul 7, 2010·Ecology Letters·James D BlandeTao Li

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Citations

Sep 30, 2015·Plant Signaling & Behavior·Kaori ShiojiriRichard Karban
Oct 20, 2015·Trends in Plant Science·Christina M Caruso, Amy L Parachnowitsch
Nov 9, 2012·The Plant Journal : for Cell and Molecular Biology·Tatyana SavchenkoKatayoon Dehesh
Oct 30, 2014·Journal of Chemical Ecology·P Sarai Girón-CalvaJames D Blande
Jul 4, 2019·Plant Signaling & Behavior·Velemir NinkovicDimitrije Markovic
Aug 25, 2017·Nature Communications·Anjel M HelmsMark C Mescher
Mar 11, 2017·Journal of Chemical Ecology·Tao Li, James D Blande
Dec 22, 2020·Frontiers in Microbiology·Aline Midori KanashiroTaícia Pacheco Fill
Oct 14, 2020·Plant, Cell & Environment·Velemir NinkovicMerlin Rensing
Nov 13, 2020·Frontiers in Plant Science·Anja K Meents, Axel Mithöfer
Oct 9, 2018·Journal of Agricultural and Food Chemistry·Tristan M CoferJames H Tumlinson
Aug 10, 2021·The Plant Journal : for Cell and Molecular Biology·Maaria RosenkranzA Corina Vlot

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