The importance of flavonoids in the taxonoxomy of Monocotyledons
Abstract
The use of micromolecules as markers for the taxonomy of monocotyledons was firstly approached by Dahlgren (1980). Although he had used his classification system for mapping phytochemical markers occurance among the angiosperms, his first approach had pointed to the existence of steroid saponines and chelidonic acid in the superorder Commeliniflorae, which was a strongly distinct phytochemical characteristic from the superorder Liliiflorae. Other classes of micromolecules were used is his system, concerning their distribution among the all the angiosperms, and one of them were the flavonoids. Even though the flavonoids were not used in the classification system at that time, they became important markers of a wide application in the taxonomic approach of Monocotyledons, among of the most important markers were: flavonols, flavones, 6- and 8-hydroxiflavonoids and flavonoid sulphates. The use of this group of phenolic compounds have allowed the character polarization that makes easy thephylogenetic systematics in identification of mono and polyphyletic groups.
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References
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