Limits...
It's Not Easy Being Blue: Are There Olfactory and Visual Trade-Offs in Plant Signalling?

Valenta K, Brown KA, Melin AD, Monckton SK, Styler SA, Jackson DA, Chapman CA - PLoS ONE (2015)

Bottom Line: Trade-offs in signal investment could impose important physiological constraints on plants, yet have been largely ignored.Blue pigments are the most visually-effective--blue is a colour that is visually salient to all known seed dispersing animals within the study system.Additionally, plants with blue-reflecting fruits are less odiferous than plants that reflect primarily in other regions of the colour spectrum.

View Article: PubMed Central - PubMed

Affiliation: Department of Anthropology, McGill University, Montreal, Quebec, Canada.

ABSTRACT
Understanding the signals used by plants to attract seed disperses is a pervasive quest in evolutionary and sensory biology. Fruit size, colour, and odour variation have long been discussed in the controversial context of dispersal syndromes targeting olfactory-oriented versus visually-oriented foragers. Trade-offs in signal investment could impose important physiological constraints on plants, yet have been largely ignored. Here, we measure the reflectance and volatile organic compounds of a community of Malagasy plants and our results indicate that extant plant signals may represent a trade-off between olfactory and chromatic signals. Blue pigments are the most visually-effective--blue is a colour that is visually salient to all known seed dispersing animals within the study system. Additionally, plants with blue-reflecting fruits are less odiferous than plants that reflect primarily in other regions of the colour spectrum.

No MeSH data available.


Photographs and associated spectrograms showing four fruits, and their associated reflectance spectra.A) Tricalysia perrieri, B) UK Liana 3, C) Grewia triflora, D) Antidesma petiolare. Photo credit: KV.
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pone.0131725.g002: Photographs and associated spectrograms showing four fruits, and their associated reflectance spectra.A) Tricalysia perrieri, B) UK Liana 3, C) Grewia triflora, D) Antidesma petiolare. Photo credit: KV.

Mentions: Reflectance spectra of one ripe fruit of each species were measured relative to a Spectralon white reflectance standard (Labsphere) on-site using a Jaz portable spectrometer and a PX-2 pulsed xenon lamp (Ocean Optics Inc.) emitting a D-65 light source, with a range of 250-720nm (Figs 1 and 2). The fruit scanning angle was fixed at 45° and external light was blocked using thick black fabric.


It's Not Easy Being Blue: Are There Olfactory and Visual Trade-Offs in Plant Signalling?

Valenta K, Brown KA, Melin AD, Monckton SK, Styler SA, Jackson DA, Chapman CA - PLoS ONE (2015)

Photographs and associated spectrograms showing four fruits, and their associated reflectance spectra.A) Tricalysia perrieri, B) UK Liana 3, C) Grewia triflora, D) Antidesma petiolare. Photo credit: KV.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4482676&req=5

pone.0131725.g002: Photographs and associated spectrograms showing four fruits, and their associated reflectance spectra.A) Tricalysia perrieri, B) UK Liana 3, C) Grewia triflora, D) Antidesma petiolare. Photo credit: KV.
Mentions: Reflectance spectra of one ripe fruit of each species were measured relative to a Spectralon white reflectance standard (Labsphere) on-site using a Jaz portable spectrometer and a PX-2 pulsed xenon lamp (Ocean Optics Inc.) emitting a D-65 light source, with a range of 250-720nm (Figs 1 and 2). The fruit scanning angle was fixed at 45° and external light was blocked using thick black fabric.

Bottom Line: Trade-offs in signal investment could impose important physiological constraints on plants, yet have been largely ignored.Blue pigments are the most visually-effective--blue is a colour that is visually salient to all known seed dispersing animals within the study system.Additionally, plants with blue-reflecting fruits are less odiferous than plants that reflect primarily in other regions of the colour spectrum.

View Article: PubMed Central - PubMed

Affiliation: Department of Anthropology, McGill University, Montreal, Quebec, Canada.

ABSTRACT
Understanding the signals used by plants to attract seed disperses is a pervasive quest in evolutionary and sensory biology. Fruit size, colour, and odour variation have long been discussed in the controversial context of dispersal syndromes targeting olfactory-oriented versus visually-oriented foragers. Trade-offs in signal investment could impose important physiological constraints on plants, yet have been largely ignored. Here, we measure the reflectance and volatile organic compounds of a community of Malagasy plants and our results indicate that extant plant signals may represent a trade-off between olfactory and chromatic signals. Blue pigments are the most visually-effective--blue is a colour that is visually salient to all known seed dispersing animals within the study system. Additionally, plants with blue-reflecting fruits are less odiferous than plants that reflect primarily in other regions of the colour spectrum.

No MeSH data available.