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Genome Res. 2016 Jun;26(6):812-25. doi: 10.1101/gr.202200.115. Epub 2016 May 4.

Venus flytrap carnivorous lifestyle builds on herbivore defense strategies.

Author information

1
Center for Computational and Theoretical Biology, Campus Hubland Nord; Department of Bioinformatics, Biocenter, Am Hubland, University of Würzburg, D-97218 Würzburg, Germany;
2
Institute for Molecular Plant Physiology and Biophysics, Biocenter, University of Würzburg, 97082 Würzburg, Germany;
3
Department of Plant Systems Biology, University of Hohenheim, 70593 Stuttgart, Germany;
4
Center for Computational and Theoretical Biology, Campus Hubland Nord; Department of Bioinformatics, Biocenter, Am Hubland, University of Würzburg, D-97218 Würzburg, Germany; Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, 97074 Würzburg, Germany;
5
Institute for Molecular Plant Physiology and Biophysics, Biocenter, University of Würzburg, 97082 Würzburg, Germany; Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
6
Bioorganic Chemistry Department, Max-Planck-Institute for Chemical Ecology, 07745 Jena, Germany;
7
Institute of Plant Biochemistry, Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-University, 40225 Düsseldorf, Germany.

Abstract

Although the concept of botanical carnivory has been known since Darwin's time, the molecular mechanisms that allow animal feeding remain unknown, primarily due to a complete lack of genomic information. Here, we show that the transcriptomic landscape of the Dionaea trap is dramatically shifted toward signal transduction and nutrient transport upon insect feeding, with touch hormone signaling and protein secretion prevailing. At the same time, a massive induction of general defense responses is accompanied by the repression of cell death-related genes/processes. We hypothesize that the carnivory syndrome of Dionaea evolved by exaptation of ancient defense pathways, replacing cell death with nutrient acquisition.

PMID:
27197216
PMCID:
PMC4889972
DOI:
10.1101/gr.202200.115
[Indexed for MEDLINE]
Free PMC Article

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