Exudate flavonoid aglycones of Veronica: Ecological and systematic implications |
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Authors: | Milena T Nikolova Rilka M Taskova Dimitar R Peev |
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Institution: | Department of Applied Botany, Institute of Botany, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria |
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Abstract: | A survey on the distribution of surface flavonoid aglycones in 52 samples of 29 species of Veronica resulted in detection of eight flavone aglycones. Apigenin and luteolin were the most common constituents of the studied exudates, followed by the methylated derivatives apigenin 4′-methyl ether, apigenin 7,4′-dimethyl ether and luteolin 3′-methyl ether. Some intraspecific variations and the main ecological trends of flavonoid aglycone accumulation in Veronica were discussed. The observed exudate profiles appeared to be characteristic for some related groups within the genus, in agreement with the morphological, karyological, molecular and other chemical data. |
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Keywords: | Veronica Plant exudates Flavonoid aglycones Apigenin Luteolin Ecology Chemosystematics |
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