Coloration of the Chilean Bellflower, Nolana paradoxa, interpreted with a scattering and absorbing layer stack model

Details

Serval ID
serval:BIB_C811451DFB82
Type
Article: article from journal or magazin.
Collection
Publications
Title
Coloration of the Chilean Bellflower, Nolana paradoxa, interpreted with a scattering and absorbing layer stack model
Journal
Planta
Author(s)
Stavenga, Doekele G.; van der Kooi, Casper J. 
ISSN
0032-0935 (Print)
Publication state
Published
Issued date
2016
Volume
243
Number
1
Pages
171-181
Language
english
Notes
Cover picture
Abstract
The coloration of flowers is due to the combined effect of pigments and light-scattering structures. To interpret flower coloration, we applied an optical model that considers a flower as a stack of layers, where each layer can be treated with the Kubelka-Munk theory for diffusely scattering and absorbing media. We applied our model to the flowers of the Chilean Bellflower, Nolana paradoxa, which have distinctly different-colored adaxial and abaxial sides. We found that the flowers have a pigmented, strongly scattering upper layer, in combination with an unpigmented, moderately reflecting lower layer. The model allowed quantitative interpretation of the reflectance and transmittance spectra measured with an integrating sphere. The absorbance spectrum of the pigment measured with a microspectrophotometer confirmed the spectrum derived by modeling. We discuss how different pigment localizations yield different reflectance spectra. The absorbing layer stack model aids in understanding the various constraints and options for plants to tune their coloration.
Open Access
Yes
Create date
07/09/2015 13:36
Last modification date
20/08/2019 16:43
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