A study of the flavonoids of the Minuartia rossii complex

• Published in: Canadian Journal of Botany
• Main Authors: Wolf, S. J., Denford, K. E., Packer, J. G.
• Format: Article in Journal/Newspaper
• Language: French
• Published: Canadian Science Publishing 1979
• Subjects: Plant Science; Minuartia rossii
• Online Access: http://dx.doi.org/10.1139/b79-279; http://www.nrcresearchpress.com/doi/pdf/10.1139/b79-279

The major flavonoid complement of the Minuartia rossii complex has been determined. Nine flavonoid glycosides have been identified based on the common aglycones quercetin and kaempferol and the rarer C-glycoflavone isovitexin. One compound (apigenin-6-C-arabi-nosylglucosyl 7-O-glucoside) was found to be of limited distribution, being present in M. rossii and M. elegans and absent in M. austromontana. The flavonoid kaempferol 3-p-coumaroylglucoside found in the complex is relatively uncommon and therefore of chemosystematic interest. With respect to their flavonoid profiles, no differences were noted between the two chromosome races of M. elegans and no geographical variation was observed in the three taxa of the complex. The genetics of isovitexin glycosylation are discussed and evidence for the probable existence of two additional glycosylation genes is presented.