Université de Neuchâtel

Systemic root signalling in a belowground, volatile-mediated tritrophic interaction

Hiltpold, Ivan ; Erb, Matthias ; Robert, Christelle Aurélie Maud ; Turlings, Ted C. J.

In: Plant, Cell & Environment, 2011, vol. 34, no. 8, p. 1267–1275

Plants attacked by leaf herbivores release volatile organic compounds (VOCs) both locally from the wounded site and systemically from non-attacked tissues. These volatiles serve as attractants for predators and parasitoids. This phenomenon is well described for plant leaves, but systemic induction of VOCs in the roots has remained unstudied. We assessed the spatial and temporal activation of the...

Université de Neuchâtel

Comparative susceptibility of larval instars and pupae of the western corn rootworm to infection by three entomopathogenic nematodes

Kurtz, B. ; Hiltpold, Ivan ; Turlings, Ted C. J. ; Kuhlmann, Ulrich ; Toepfer, Stefan

In: BioControl, 2009, vol. 54, no. 2, p. 255-262

As a first step towards the development of an ecologically rational control strategy against western corn rootworm (WCR; Diabrotica virgifera virgifera LeConte, Coleoptera: Chrysomelidae) in Europe, we compared the susceptibility of the soil living larvae and pupae of this maize pest to infection by three entomopathogenic nematode (EPN) species. In laboratory assays using sand-filled...

Université de Neuchâtel

Manipulation of tritrophic interactions : a key for belowground biological control ?

Hiltpold, Ivan ; Turlings, T.C.J. (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008 ; Th. 2073.

In response to attack by phytophagous insects, plants produce volatile organic compounds that serve as cues for natural enemies of the herbivore to locate their potential host or prey. Such tritrophic interactions are well understood aboveground. Recently, it has become evident that such interactions also occur belowground. Among the compounds that are involved in belowground tritrophic...