Abstract
The industrial value of various plants has been improved through the of plant cell culture systems with elicitation. In this study, the adventitious root of Abeliophyllum distichum (AdAR) was treated with gibberellic acid 3 (GA3) to improve its anticancer property. The hexane fraction of the GA3-treated A. distichum adventitious root exhibited a stronger cytotoxic activity against A549 cells than the hexane fraction of AdAR. Through GC/MS and principal component analysis, we identified ferruginol and sugiol as anticancer compounds, which were induced by GA3 treatment in AdAR. Gene expression analysis combined with functional characterisation suggests that the GA3 treatment increased the transcription of geranylgeranyl pyrophosphate synthases and copalyl diphosphate synthase, which led to the accumulation of diterpenoids, including ferruginol and sugiol. Overall, these findings can contribute to the advancement of metabolic engineering for enhancing the biosynthesis of active diterpenoids, and facilitate the large-scale production of bioactive compounds sourced from A. distichum.
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