Abstract

Both cell suspension cultures of Thalictrum flavum and T. dipterocarpum were found to produce berberine (0.3 and 0.4 g/l, respectively) as a main alkaloid. Berberine production in the latter was markedly stimulated by 1-naphthaleneacetic acid in combination with 6-benzylaminopurine, whereas it was rather suppressed by the same auxin in the former. T. flavum cultures accumulated berberine and columbamine in the cells without releasing them into medium. On the other hand, T. dipterocarpum cultures released berberine into medium during the logarithmic growth phase, but thereafter accumulated all the berberine synthesized in the cells.

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