The biosynthetic relationship between littorine and hyoscyamine in transformed roots of Datura stramonium

Autor: John T. G. Hamilton, David O'Hagan, Ioannis Zabetakis, Robert Edwards
Rok vydání: 2019
Předmět:
Zdroj: Plant cell reports. 18(3-4)
ISSN: 1432-203X
Popis: The metabolic relationship between littorine and hyoscyamine has been monitored in transformed roots of Datura stramonium. Quantification by GC of unlabelled littorine and by GCMS of 13C-labelled littorine demonstrated that exogenously added littorine (0.1 mM) was significantly metabolised (35%) to hyoscyamine. In contrast, exogenously added hyoscyamine was not metabolised to littorine, indicating that this conversion is irreversible. The conversion of littorine to hyoscyamine was suppressed by P-450 oxidase inhibitors (particularly clotrimazole), implicating the involvement, at least in part of a cytochrome P-450 activity operating hyoscyamine biosynthesis.
Databáze: OpenAIRE