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PubMed2003

Stimulation of furanochromone accumulation in callus cultures of Ammi visnaga L. by addition of elicitors.

In order to check the possibility of producing secondary metabolites, in vitro cultures of A. visnaga callus were established. The best growth of A. visnaga callus was obtained on Murashige and Skoog medium (MS) containing 6-benzyladenine (BA) and alpha-naphtaleneacetic acid (NAA). The study was concentrated on the induction of production of secondary metabolites by exposing callus to abiotic elicitors: benzo(1,2,3)-thiadiazole-7-carbothionic acid S-methyl ester (BION) and a suspension of silica (SiO2) and biotic elicitors: autoclaved lysates of Enterobacter sakazaki and scleroglucan. GC analysis indicated that not-elicited callus of A. visnaga grown in darkness accumulated 2 times more visnagin than the one which was grown under a 16-h photoperiod. The highest accumulation of visnagin was observed in the callus culture elicited with scleroglucan or BION. Scleroglucan induced also the accumulation of khellin in A. visnaga callus. The presented work shows that biosynthesis of pharmacologically important secondary metabolites in A. visnaga cultures could be stimulated by application of elicitors.

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