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  Tissue-specific emission of (E)-a-bergamotene helps resolve the dilemma when pollinators are also herbivores

Zhou, W., Kügler, A., McGale, E., Haverkamp, A., Knaden, M., Guo, H., et al. (2017). Tissue-specific emission of (E)-a-bergamotene helps resolve the dilemma when pollinators are also herbivores. Current Biology, 27(9), 1336-1341. doi:10.1016/j.cub.2017.03.017.

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http://dx.doi.org/10.1016/j.cub.2017.03.017 (Publisher version)
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 Creators:
Zhou, Wenwu1, Author              
Kügler, Anke1, Author              
McGale, Erica1, 2, Author              
Haverkamp, Alexander2, 3, Author              
Knaden, Markus4, Author              
Guo, Han1, Author              
Beran, Franziska5, Author              
Yon, Felipe1, 2, Author              
Li, Ran1, Author              
Lackus, Nathalie2, 6, Author              
Köllner, Tobias G.6, Author              
Bing, Julia2, 3, Author              
Schuman, Meredith C.1, Author              
Hansson, Bill S.3, Author              
Kessler, Danny1, Author              
Baldwin, Ian Thomas1, Author              
Xu, Shuqing1, Author              
Affiliations:
1Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society, ou_24029              
2IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              
3Department of Evolutionary Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421894              
4Research Group Dr. M. Knaden, Insect Behavior, Department of Neuroethology, Prof. B. S. Hansson, MPI for Chemical Ecology, Max Planck Society, ou_421913              
5Research Group Dr. F. Beran, Detoxification in Insects, MPI for Chemical Ecology, Max Planck Society, ou_1933291              
6Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society, ou_421893              

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 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)-a-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)-a-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)-a-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.

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 Dates: 20172017-04-202017-08
 Publication Status: Published in print
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 Identifiers: Other: ITB547
DOI: 10.1016/j.cub.2017.03.017
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Title: Current Biology
  Other : Curr. Biol.
Source Genre: Journal
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Publ. Info: London, UK : Cell Press
Pages: - Volume / Issue: 27 (9) Sequence Number: - Start / End Page: 1336 - 1341 Identifier: ISSN: 0960-9822
CoNE: https://pure.mpg.de/cone/journals/resource/954925579107