Abstract
Summary The cell line isolated from callus obtained from Amaranthus tricolor seedlings proved to be capable of producing betacyanins.HPLC analysis showed that in vitro, as in the seedling, amaranthin (associated with its isomer, isomaranthin) is synthesized.Studies of the influence of light and cytokinins on biosynthesis of these pigments in cell suspensions demonstrated the inductive role of these two factors.The synergistic effect of light and cytokinins seems to favour an interaction between the two inducing factors.However, the results obtained with DRB, which specifically inhibits kinetin-induced synthesis without modifying the photochemical response, suggest that light and cytokinins act independently on some stages of biosynthesis of these pigments.
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