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  • Title: Methyl jasmonate influence on silymarin production and plant stress responses in Silybum marianum hairy root cultures in a bioreactor.
    Author: Rahimi S, Hasanloo T, Najafi F, Khavari-Nejad RA.
    Journal: Nat Prod Res; 2012; 26(18):1662-7. PubMed ID: 21988074.
    Abstract:
    In this article our aim was to evaluate mass cultivation of S. marianum hairy roots in a bioreactor to produce silymarin. The effects of methyl jasmonate (MJ) elicitation on the accumulation of silymarin and the extent of the MJ-induced oxidative damage were investigated in bioreactor hairy root cultures of S. marianum. The growth rate of the bioreactor hairy root cultures was higher than that of those in a shake flask after 3 weeks. Silymarin accumulation was increased from 0.13 mg g⁻¹ DW in non-treated hairy roots to 0.22 mg g⁻¹ DW in hairy roots 72 h after 100 µM MJ treatment. Guaiacol peroxidase and ascorbate peroxidase were activated by MJ 72 h after treatment, being 3.2- and 1.3-fold higher, respectively, than that of the control. An increase in enzymatic activity suggests increased scavenging of reactive oxygen species, indicating the tolerance to MJ stress. These results suggest that MJ elicitation is beneficial for silymarin production using bioreactor hairy root cultures.
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