Effectiveness of plant-derived and microbial polysaccharides as elicitors for anthraquinone synthesis in Morinda citrifolia cultures
Dornenburg, H. | Knorr, D.
Various plant-derived and microbial polysaccharides were applied to cultured cells of Morinda citrifolia . Application of polysaccharides elicited secondary metabolism of these cultures and induced anthraquinone production. Polysaccharides involved in interactions between plants and microorganisms (chitosan/ chitin and pectin) were most effective in inducing anthraquinone synthesis. Seven and 14 days of incubation with Chitin 50, a water-soluble chitin derivative with a degree of acetylation of 53%, resulted in an anthraquinone synthesis approximately 2.5 times higher than the control. For pectins the active components were found to be galacturonic acids with a degree of polymerization higher than five units. Pectins isolated from M. citrifolia cell walls have been shown to elicit anthraquinone synthesis over longer periods than other pectins tested and induced a 5.6-fold increase of anthraquinone production without inhibitory effects on the growth of the cell culture.
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