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Covariation and phenotypic integration in chemical communication displays: biosynthetic constraints and eco-evolutionary implications

MPS-Authors
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Gershenzon,  Jonathan
Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society;

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Groot,  Astrid T.
Department of Entomology, Prof. D. G. Heckel, MPI for Chemical Ecology, Max Planck Society;

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Kost,  Christian
Research Group Dr. C. Kost, Experimental Ecology and Evolution, Department of Bioorganic Chemistry, Prof. Dr. W. Boland, MPI for Chemical Ecology, Max Planck Society;

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Unsicker,  Sybille
Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society;

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Köllner,  Tobias G.
Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society;

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Citation

Junker, R. R., Kuppler, J., Amo, L., Blande, J. D., Borges, R. M., van Dam, N. M., et al. (2017). Covariation and phenotypic integration in chemical communication displays: biosynthetic constraints and eco-evolutionary implications. New Phytologist, 220(3), 739-749. doi:10.1111/nph.14505.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-9360-C
Abstract
Chemical communication is ubiquitous. The identification of conserved structural elements
in visual and acoustic communication is well established, but comparable information on
chemical communication displays (CCDs) is lacking.
We assessed the phenotypic integration of CCDs in a meta-analysis to characterize patterns
of covariation in CCDs and identified functional or biosynthetically constrained modules.
Poorly integrated plant CCDs (i.e. low covariation between scent compounds) support the
notion that plants often utilize one or few key compounds to repel antagonists or to attract
pollinators and enemies of herbivores. Animal CCDs (mostly insect pheromones) were usually
more integrated than those of plants (i.e. stronger covariation), suggesting that animals communicate
via fixed proportions among compounds. Both plant and animal CCDs were composed
of modules, which are groups of strongly covarying compounds. Biosynthetic similarity
of compounds revealed biosynthetic constraints in the covariation patterns of plant CCDs.
We provide a novel perspective on chemical communication and a basis for future investigations
on structural properties of CCDs. This will facilitate identifying modules and biosynthetic
constraints that may affect the outcome of selection and thus provide a predictive
framework for evolutionary trajectories of CCDs in plants and animals.