| Title: | The effect of genetically enriched (E)-beta-ocimene and the role of floral scent in the attraction of the predatory mite Phytoseiulus persimilis to spider mite-induced volatile blends of torenia |
| Author(s): | Shimoda T; Nishihara M; Ozawa R; Takabayashi J; Arimura GI; |
| Address: | "National Agricultural Research Center, Tsukuba, Ibaraki 305-8666, Japan. Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan. Center for Ecological Research, Kyoto University, Otsu, Shiga 520-2113, Japan. Global COE Program: Evolution and Biodiversity, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan" |
| DOI: | 10.1111/j.1469-8137.2011.04018.x |
| ISSN/ISBN: | 1469-8137 (Electronic) 0028-646X (Linking) |
| Abstract: | "Plants under herbivore attack emit mixtures of volatiles (herbivore-induced plant volatiles, HIPVs) that can attract predators of the herbivores. Although the composition of HIPVs should be critical for the attraction, most studies of transgenic plant-emitted volatiles have simply addressed the effect of trans-volatiles without embedding in other endogenous plant volatiles. We investigated the abilities of transgenic wishbone flower plants (Torenia hybrida and Torenia fournieri) infested with spider mites, emitting a trans-volatile ((E)-beta-ocimene) in the presence or absence of endogenous volatiles (natural HIPVs and/or floral volatiles), to attract predatory mites (Phytoseiulus persimilis). In both olfactory- and glasshouse-based assays, P. persimilis females were attracted to natural HIPVs from infested wildtype (wt) plants of T. hybrida but not to those of T. fournieri. The trans-volatile enhanced the ability to attract P. persimilis only when added to an active HIPV blend from the infested transgenic T. hybrida plants, in comparison with the attraction by infested wt plants. Intriguingly, floral volatiles abolished the enhanced attractive ability of T. hybrida transformants, although floral volatiles themselves did not elicit any attraction or avoidance behavior. Predator responses to trans-volatiles were found to depend on various background volatiles (e.g. natural HIPVs and floral volatiles) endogenously emitted by the transgenic plants" |
| Keywords: | "Acyclic Monoterpenes Alkenes/metabolism/*pharmacology Animals Female Flowers/metabolism Herbivory Host-Parasite Interactions Magnoliopsida/genetics/*metabolism/*parasitology Mite Infestations Mites/drug effects/*physiology Pheromones/pharmacology Plants, ;" |
| Notes: | "MedlineShimoda, Takeshi Nishihara, Masahiro Ozawa, Rika Takabayashi, Junji Arimura, Gen-Ichiro eng Research Support, Non-U.S. Gov't England 2012/01/17 New Phytol. 2012 Mar; 193(4):1009-1021. doi: 10.1111/j.1469-8137.2011.04018.x. Epub 2012 Jan 13" |
