Callaghan Innovation Research Papers

Back to Research Papers

TitleBlack flower coloration in wild Lisianthius nigrescens: Its chemistry and ecological consequences
Publication TypeJournal Article
Year of Publication2004
AuthorsMarkham, K.R., Bloor S.J., Nicholson R., Rivera R., Shemluck M., Kevan P.G., and Michener C.
JournalZeitschrift fur Naturforschung - Section C Journal of Biosciences
Pagination625 - 630
Date Published2004
ISSN09395075 (ISSN)
Keywordsarticle, chemistry, Chromatography, High Pressure Liquid, color, ecosystem, flavone derivative, Flavones, flower, Flowers, Gentianaceae, glycoside, Glycosides, high performance liquid chromatography, isolation and purification, Lisianthius, Lisianthius nigrescens, physiology, pigment, Pigments, Biological, pollen, Ultraviolet radiation, Ultraviolet Rays
AbstractThe 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 co-pigmentation) is thought to account for the almost complete absorption of both UV and visible wavebands observed by reflectance photography.

Back to top