Article (Scientific journals)
Plutella xylostella (L.) infestations at varying temperatures induce the emission of specific volatile blends by Arabidopsis thaliana (L.) Heynh
Hien, Truong Thi Dieu; Delory, Benjamin; Brostaux, Yves et al.
2014In Plant Signaling and Behavior
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Keywords :
Arabidopsis thaliana; Plutella xylostella; Temperature regimes; combined factors; volatile organic compounds (VOCs)
Abstract :
[en] The effect of combined abiotic and biotic factors on plant volatile organic compound (VOC) emissions is poorly understood. This study evaluated the VOC emissions produced by Arabidopsis thaliana (L.) Col-0 subjected to three temperature regimes (17, 22, and 27 °C) in the presence and absence of Plutella xylostella larvae over two time intervals (0–4 and 4–8 h), in comparison to control plants. The analyses of VOCs emitted by Arabidopsis plants were made by headspace solid phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). It was found that certain volatile groups (e.g., alcohols, ketones, aldehydes, and terpenes) are induced by both single factors (temperature or larval infestation) and combined factors (temperature and larvae interactions), whereas other volatile groups (e.g., isothiocyanates [ITCs] and nitrile) were specific to the experimental conditions. ITCs (mainly 4-methylpentyl isothiocyanate) were emitted from plants subjected to larval infestation at 17 and 27 °C after the two time intervals. The proportions of sulfides (mainly dimethyl disulfide) and 4-(methylthio) butanenitrile were significantly higher on herbivore-infested plants at 22 °C compared to the other treatments. Overall, our findings indicate that changes in all experimental conditions caused significant changes to the VOC emissions of Arabidopsis plants. Therefore, the interaction between temperature and larval feeding may represent an important factor determining the variability of volatile emissions by plants subjected to multiple simultaneous factors.
Disciplines :
Chemistry
Author, co-author :
Hien, Truong Thi Dieu ;  Université de Liège - ULiège > Form. doct. sc. agro. & ingé. biol.
Delory, Benjamin ;  Université de Liège - ULiège > Sciences agronomiques > Biologie végétale
Brostaux, Yves  ;  Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie
Heuskin, Stéphanie ;  Université de Liège - ULiège > Chimie et bio-industries > Analyse, qual. et risques - Labo. de Chimie analytique
Delaplace, Pierre  ;  Université de Liège - ULiège > Sciences agronomiques > Biologie végétale
Francis, Frédéric  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Lognay, Georges ;  Université de Liège - ULiège > Chimie et bio-industries > Analyse, qual. et risques - Labo. de Chimie analytique
Language :
English
Title :
Plutella xylostella (L.) infestations at varying temperatures induce the emission of specific volatile blends by Arabidopsis thaliana (L.) Heynh
Publication date :
31 October 2014
Journal title :
Plant Signaling and Behavior
ISSN :
1559-2316
eISSN :
1559-2324
Publisher :
Landes Bioscience, United States
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 November 2014

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