title: Increased synthesis of ajmalicine and catharanthine by cell suspension cultures of Catharanthus roseus in response to fungal culture-filtrates.
abstract: The ammonium sulfate-precipitated fraction from mycelia and culture-filtrates and the crude, cell-free culture filtrates from the growth medium of the fungi Chrysosporium palmorum, Eurotium rubrum, Micromucor isabellina, and Pythium aphanidermatum when aseptically added to cell suspensions of Cantharanthus roseus caused a rapid and dramatic increase in indole alkaloid biosynthesis. Up to 400 micrograms/L ajmalicine and 600 micrograms/L catharanthine were detected in C. roseus cell suspension grown in the presence of the M. isabellina fungal culture filtrate for 3 d. Untreated cells produced only trace levels of ajmalicine and catharanthine per liter of cell suspension after 15 d of culture.
mesh_terms: D002460:Cell Line; D005658:Fungi / Q000502:physiology*; D007536:Isomerism; D063245:Plant Development; D046948:Secologanin Tryptamine Alkaloids; D014748:Vinca Alkaloids / Q000096:biosynthesis*; D015016:Yohimbine / Q000096:biosynthesis*
chemical_list: D046948:Secologanin Tryptamine Alkaloids; D014748:Vinca Alkaloids; D015016:Yohimbine; C005709:raubasine; C017836:catharanthine