| Title: | Tissue-Specific Emission of (E)-alpha-Bergamotene Helps Resolve the Dilemma When Pollinators Are Also Herbivores |
| Author(s): | Zhou W; Kugler A; McGale E; Haverkamp A; Knaden M; Guo H; Beran F; Yon F; Li R; Lackus N; Kollner TG; Bing J; Schuman MC; Hansson BS; Kessler D; Baldwin IT; Xu S; |
| Address: | "Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoll-Strasse 8, 07745 Jena, Germany. Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Hans-Knoll-Strasse 8, 07745 Jena, Germany. Research Group Sequestration and Detoxification in Insects, Max Planck Institute for Chemical Ecology, Hans-Knoll-Strasse 8, 07745 Jena, Germany. Department of Biochemistry, Max Planck Institute for Chemical Ecology, Hans-Knoll-Strasse 8, 07745 Jena, Germany. Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoll-Strasse 8, 07745 Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv), Deutscher Platz 5e, 04103 Leipzig, Germany. Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoll-Strasse 8, 07745 Jena, Germany. Electronic address: sxu@ice.mpg.de" |
| DOI: | 10.1016/j.cub.2017.03.017 |
| ISSN/ISBN: | 1879-0445 (Electronic) 0960-9822 (Linking) |
| Abstract: | "More than 87% of flowering plant species are animal-pollinated [1] and produce floral scents and other signals to attract pollinators. These floral cues may however also attract antagonistic visitors, including herbivores [2]. The dilemma is exacerbated when adult insects pollinate the same plant that their larvae consume. It remains largely unclear how plants maximize their fitness under these circumstances. Here we show that in the night-flowering wild tobacco Nicotiana attenuata, the emission of a sesquiterpene, (E)-alpha-bergamotene, in flowers increases adult Manduca sexta moth-mediated pollination success, while the same compound in leaves is known to mediate indirect defense against M. sexta larvae [3, 4]. Forward and reverse genetic analyses demonstrated that both herbivory-induced and floral (E)-alpha-bergamotene are regulated by the expression of a monoterpene-synthase-derived sesquiterpene synthase (NaTPS38). The expression pattern of NaTPS38 also accounts for variation in (E)-alpha-bergamotene emission among natural accessions. These results highlight that differential expression of a single gene that results in tissue-specific emission of one compound contributes to resolving the dilemma for plants when their pollinators are also herbivores. Furthermore, this study provides genetic evidence that pollinators and herbivores interactively shape the evolution of floral signals and plant defense" |
| Keywords: | Alkyl and Aryl Transferases/metabolism Animals Bridged Bicyclo Compounds/*metabolism Flowers/chemistry/cytology/physiology *Herbivory Manduca/*physiology Organ Specificity Plant Leaves/chemistry/cytology/*physiology *Pollination Tobacco/*chemistry/cytolog; |
| Notes: | "MedlineZhou, Wenwu Kugler, Anke McGale, Erica Haverkamp, Alexander Knaden, Markus Guo, Han Beran, Franziska Yon, Felipe Li, Ran Lackus, Nathalie Kollner, Tobias G Bing, Julia Schuman, Meredith C Hansson, Bill S Kessler, Danny Baldwin, Ian T Xu, Shuqing eng 293926/ERC_/European Research Council/International England 2017/04/25 Curr Biol. 2017 May 8; 27(9):1336-1341. doi: 10.1016/j.cub.2017.03.017. Epub 2017 Apr 20" |
