Planta Med 1960; 8(4): 491-496
DOI: 10.1055/s-0028-1101794
© Georg Thieme Verlag Stuttgart · New York

DIE ROLLE VON SPROSS UND WURZEL BEI DER UMWANDLUNG DES HYOSCYAMINS IN VERSCHIEDENEN DATURA–ARTEN1

A. Romeike
  • Aus dem Institut für Kulturpflanzenforschung der Deutschen Akademie der Wissenschaften zu Berlin in Gatersleben
1 Vorgetragen auf der 8. Vortragstagung der Deutschen Gesellschaft für Arzneipflanzenforschung in Braunschweig am 23.10.1960.
Further Information

Publication History

Publication Date:
15 January 2009 (online)

Summary

In Datura ferox hyoscyamin is transformed into hyoscin. An alkaloid which may be 6–Oxyhyoscyamin is an intermediate in the biosynthesis of hyoscin from hyoscyamin. While hyoscyamin is synthesised in the roots its transformation into hyoscin takes place preferentially in the leaves. The same pattern of biosynthesis of hyoscin is found in other species of Datura and in Atropa belladonna. In contrast to Datura ferox, however, in most species biosynthesis of hyoscin is restricted to young plants. As the plants mature the enzymes involved in this transformation are inactivated and hyoscyamin begins to accumulate.

The reverse reaction, transformation of hyoscyin into hyoscyamin, could not be demonstrated by feeding root cultures of Datura innoxia with 14C–marked hyoscin.

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