Mechanically-injured wheat plants release greater amounts of the secondary metabolites linalool and linalool oxide
Dariusz Piesik 1, 2
David K. Weaver 2, 3
Gavin E. Peck 2
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University of Technology and Agriculture, Department of Applied Entomology Kordeckiego 20, 85-225 Bydgoszcz, Poland
Montana State University, Department of Entomology, Bozeman, MT 59717-3120, USA
Montana State University, Department of Land Resources and Environmental Sciences, 334 Leon Johnson Hall, Bozeman, MT 59717-3120, USA
Dariusz Piesik
University of Technology and Agriculture, Department of Applied Entomology Kordeckiego 20, 85-225 Bydgoszcz, Poland
Journal of Plant Protection Research 2006;46(1):29–39
Plants under attack of herbivores can emit increased amounts of volatile compounds from their leaves. Similarly, mechanically-injured plants can emit volatile chemicals that differ both quantitatively and qualitatively from undamaged plants. In this experiment, mechanical injury increased the release of the secondary metabolites linalool (3,7-dimethyl-1,6-octadien-3-ol) and linalool oxide (5-ethenyltetrahydro-2-furanmethanol) by wheat plants. The amounts released varied significantly with injury type and the period of time after injury. The time interval for the volatile collection within the photophase also influenced the amount collected for each day. The increased emission of these compounds, as a result of injury, may be explained as a defense mechanism against wounding. The role of these plant volatiles can be further investigated in the context of plant response to mechanical injury, within the broader context of all types of injury.
The authors have declared that no conflict of interests exist.
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