Article (Scientific journals)
Characterization of volatile organic compounds emitted by Barley (Hordeum vulgare L.) roots and their attractiveness to wireworms
Gfeller, Aurélie; Laloux, Morgan; Barsics, Fanny et al.
2013In Journal of Chemical Ecology, 39 (8), p. 1129-1139
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Keywords :
Volatile organic compound; barley; roots; solid-phase-micro-extraction; Agriotessordida; root - insect interactions
Abstract :
[en] Root volatile organic compounds (VOCs), their chemistry and ecological functions have garnered less attention than aboveground emitted plant VOCs. We report here for the first time on the identification of VOCs emitted by barley roots (Hordeum vulgare L.). Twenty nine VOCs were identified from isolated 21-d-old roots. The detection of root volatiles was dependent on the medium used for root cultivation. From 7-d-old roots cultivated on sterile Hoagland gelified medium, 24 VOCs were identified, on sterile vermiculite 33 VOCs, and on non-sterile vermiculite 34 VOCs. The major VOCs identified were fatty acid derived compounds, including hexanal, methyl hexanoate, (E)-hex-2-enal, 2-pentylfuran, pentan-1-ol, (Z)-2-(pentenyl)-furan, (Z)-pent-2-en-1-ol, hexan-1-ol, (Z)-hex-3-en-1-ol, (E)-hex-2-en-1-ol, oct-1-en-3-ol, 2-ethylhexan-1-ol (likely a contaminant), (E)-non-2-enal, octan-1-ol, (2E,6Z)-nona-2,6-dienal), methyl (E)-non-2-enoate, nonan-1-ol, (Z)-non-3-en-1-ol, (E)-non-2-en-1-ol, nona-3,6-dien-1-ol and nona-2,6-dien-1-ol. In an olfactometer assay, wireworms (larvae of Agriotes sordidus Illiger, Coleoptera: Elateridae) were attracted to chemical cues emanating from barley seedlings. We discuss the role of individual root volatiles or a blend of the root volatiles detected here and their interaction with CO2for wireworm attraction.
Disciplines :
Entomology & pest control
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Gfeller, Aurélie
Laloux, Morgan
Barsics, Fanny ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Edine Kati, Djamel
Haubruge, Eric  ;  Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech
du Jardin, Patrick  ;  Université de Liège - ULiège > Sciences agronomiques > Biologie végétale
Verheggen, François  ;  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
Wathelet, Jean-Paul ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie générale et organique
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie générale et organique
Language :
English
Title :
Characterization of volatile organic compounds emitted by Barley (Hordeum vulgare L.) roots and their attractiveness to wireworms
Publication date :
2013
Journal title :
Journal of Chemical Ecology
ISSN :
0098-0331
eISSN :
1573-1561
Publisher :
Kluwer Academic/Plenum Publishers, New York, United States - New York
Volume :
39
Issue :
8
Pages :
1129-1139
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 31 May 2013

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