Temperature regimes and aphid density interactions differentially influence VOC emissions in Arabidopsis

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • Dieu Hien Truong
  • Benjamin M. Delory
  • Maryse Vanderplanck
  • Yves Brostaux
  • Axel Vandereycken
  • Stéphanie Heuskin
  • Pierre Delaplace
  • Frédéric Francis
  • Georges Lognay

The effects of volatile emissions from plants exposed to individual abiotic and biotic stresses are well documented. However, the influence of multiple stresses on plant photosynthesis and defense responses, resulting in a variety of volatile profiles has received little attention. In this study, we investigated how temperature regimes in the presence and absence of the sucking insect Myzus persicae affected volatile organic compound (VOC) emissions in Arabidopsis over three time periods (0-24, 24-48, and 48-72 h). Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry was used to evaluate Arabidopsis VOCs. The results showed that under laboratory conditions, eight volatile classes [alcohols (mainly 2-ethyl-hexan-1-ol), ketone (6-methyl hept-5-en-2-one), esters (mainly (Z)-3-hexenyl acetate), aldehydes (mainly phenylacetaldehyde), isothiocyanates (mainly 4-methylpentyl isothiocyanate), terpenes (mainly (E,E)-α-farnesene), nitrile (5-(methylthio) pentanenitrile), and sulfide (dimethyl trisulfide)] were observed on plants exposed to stress combinations, whereas emissions of six volatile classes were observed during temperature stress treatments alone (with the exception of nitriles and sulfides). Aphid density at high temperature combinations resulted in significantly higher isothiocyanate, ester, nitrile, and sulfide proportions. The results of the present study provide an insight into the effects of temperature-aphid interactions on plant volatile emissions.

Original languageEnglish
JournalArthropod-Plant Interactions : an international journal devoted to studies on interactions of insects, mites and other anthropods with plants
Volume8
Issue number4
Pages (from-to)317-327
Number of pages11
ISSN1872-8855
DOIs
Publication statusPublished - 08.2014

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