title: Helenalin Acetate in in vitro Propagated Plants of Arnica montana.
abstract: Propagated "IN VITRO" shoots and plantlets of ARNICA MONTANA L. (Asteraceae) have been shown to produce sesquiterpene lactones, i.e. helenalin and 11,13-dihydrohelenalin esters. The compounds were detected in green organs only; roots of the plantlets contained no sesquiterpene lactones. The helenalin acetate content in leaves of the plantlets (0.073% dry wt) was 4-times higher than in proliferated shoots (0.016% dry wt). The best rate of shoot multiplication was achieved on MS medium, supplemented with NAA 0.5mg/l and Kn 2.5 mg/l (formation of 22 shoots within 8 weeks).
authors.affiliation: Institute of Pharmacology, Polish Academy of Sciences, Department of Phytochemistry, 12 Smetna str., 31-343 Kraków, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Malarz
authors.forename: A
authors.initials: A
authors.lastname: Stojakowska
authors.forename: B
authors.initials: B
authors.lastname: Dohnal
authors.forename: W
authors.initials: W
authors.lastname: Kisiel