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Dock leaf beetle, Gastrophysa viridula Deg., herbivory on the mossey sorrel, Rumex confertus Willd: induced plant volatiles and beetle orientation responses
- The invasive weed Rumex confertus Willd. (mossy sorrel) is fed upon and severely defoliated by Gastrophysa viridula Deg. (dock leaf beetle). We report volatile organic compound (VOC) induction when one leaf on R. confertus was damaged by G. viridula adults to better understand plant responses to herbivory. The R. confertus volatile blend induced by G. viridula feeding included three green leaf volatiles (GLVs; (Z)-3-hexenal, (Z)-3-hexen-1-ol, (Z)-3-hexen-1-yl acetate) and terpenes (linalool, β-caryophyllene, β-farnesene). Overall, R. confertus that had been damaged by G. viridula released far greater concentrations of these six VOCs than control plants. Male and female of G. viridula had no significant attraction or repulsion to (Z)-3-hexen-1-ol or β-caryophyllene. A significantly greater proportion of female and male beetles were attracted to (Z)-3-hexenal (5 ngxmin-1 = 300 ngxhr-1) and (Z)-3-hexen-1-yl acetate (5 and 25 ngxmin-1), in the range of induced concentrations emitted by a single injured leaf.
Piesik, Dariusz , Wenda-Piesik, Anna , Ligor, Magdalena , Buszewski, Boguslaw , Delaney, Kevin J.
Chrysomelidae , Rumex , acetates , essential oils , females , herbivores , imagos , invasive species , leaves , linalool , plant response , plants , volatile organic compounds
- Includes references
- Journal of agricultural science 2012 Jan., v. 4, no. 1
Journal Articles, USDA Authors, Peer-Reviewed
- Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.