Licorice (Glycyrrhiza glabra L. var. glabra, Fabaceae) is considered as a model plant synthesizing triterpenoid secondary compounds. It is known that glycyrrhizin is accumulated in thickened intact licorice roots. The effects of methyl jasmonate (MeJa) and salicylic acid (SA) on plant growth and production of glycyrrhizin in the roots of in vitro cultured 65-day-old plants were studied. Increasing amounts of glycyrrhizin in the roots treated with MeJa inhibited root growth, while SA increased the amount of glycyrrhizin without negative effects on growth. Treatment of plantlets with 0.1–2 mM MeJa and 0.1 and 1 mM SA enhanced the production of glycyrrhizin by 3.8 and 4.1 times, respectively, as compared to the controls. Results support the hypothesis that production of glycyrrhizin is related to a defense response system of the licorice.
Russian Journal of Plant Physiology – Springer Journals
Published: Sep 8, 2009
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