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J Chem Ecol

Title:		Characterization of volatile organic compounds emitted by barley (Hordeum vulgare L.) roots and their attractiveness to wireworms
Author(s):		Gfeller A; Laloux M; Barsics F; Kati DE; Haubruge E; du Jardin P; Verheggen FJ; Lognay G; Wathelet JP; Fauconnier ML;
Address:		"Plant Biology Unit, Gembloux Agro-Bio Tech University of Liege, Gembloux, Belgium"
Journal Title:		J Chem Ecol
Year:		2013
Volume:		20130621
Issue:		8
Page Number:		1129 - 1139
DOI:		10.1007/s10886-013-0302-3
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"Root volatile organic compounds (VOCs), their chemistry and ecological functions have garnered less attention than aboveground emitted plant VOCs. We report here 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 was dependent on the medium used for root cultivation. We identified 24 VOCs from 7-d-old roots when plants were cultivated on sterile Hoagland gelified medium, 33 when grown on sterile vermiculite, and 34 on non-sterile vermiculite. The major VOCs 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 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 CO2 for wireworm attraction"
Keywords:		"Animals Behavior, Animal/drug effects Carbon Dioxide/chemistry/pharmacology Coleoptera/growth & development/*physiology Gas Chromatography-Mass Spectrometry Hordeum/*chemistry/metabolism Larva/drug effects/physiology Plant Roots/chemistry/metabolism Volat;"
Notes:		"MedlineGfeller, Aurelie Laloux, Morgan Barsics, Fanny Kati, Djamel Edine Haubruge, Eric du Jardin, Patrick Verheggen, Francois J Lognay, Georges Wathelet, Jean-Paul Fauconnier, Marie-Laure eng Research Support, Non-U.S. Gov't 2013/06/25 J Chem Ecol. 2013 Aug; 39(8):1129-39. doi: 10.1007/s10886-013-0302-3. Epub 2013 Jun 21"