Black Flower Coloration in Wild Lisianthius nigrescens: Its Chemistry and Ecological Consequences
| Autor: | Raul Rivera, Peter G. Kevan, Kenneth R. Markham, Stephen J. Bloor, Melvin Shemluck, Charles Michener, Rob Nicholson |
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| Rok vydání: | 2004 |
| Předmět: |
Gentianaceae
Ultraviolet Rays Color Flowers Flavones General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Pigment Dry weight Botany Glycosides Chromatography High Pressure Liquid Ecosystem chemistry.chemical_classification biology Pigments Biological biology.organism_classification Galactoside chemistry visual_art Anthocyanin Apigenin visual_art.visual_art_medium Pollen Luteolin |
| Zdroj: | Zeitschrift für Naturforschung C. 59:625-630 |
| ISSN: | 1865-7125 0939-5075 |
| Popis: | The major pigments responsible for the flower color within the black flowered Gentianaceae, Lisianthius nigrescens, were characterized by HPLC and chemical analyses. HPLC analysis showed one major and one minor anthocyanin and 3 major and 3 minor flavone glycosides. The anthocyanins [delphinidin-3-O-rhamnol(1-6)galactoside and its 5-O-glucoside] comprised an extraordinary 24% of the dry weight of wild collected L. nigrescens corallas, and were accompanied in a 1:1 ratio by a range of apigenin and luteolin 8-C-glucosides and their 7-O-methyl ethers. The high levels of anthocyanins and flavones (and their copigmentation) is thought to account for the almost complete absorption of both UV and visible wavebands observed by reflectance photography. |
| Databáze: | OpenAIRE |
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