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Pubmed ID :29515321
Publication Date : //

Effect of elicitation and precursor feeding on accumulation of 20-hydroxyecdysone in Linn. cell suspension cultures.


20-Hydroxyecdysone is one of the most common ecdysteroids in plants with potential therapeutic applications. In this study, cell suspension cultures of were raised in shake flasks to investigate the production of 20-hydroxyecdysone. The quantification and characterization of 20-hydroxyecdysone in the cultures were done by High performance liquid chromatography (HPLC) and Liquid Chromatography-quadrupole time-of- flight mass spectrometry (LC-Q-TOF) analyses. For raising the suspension, calli initiated from in vitro grown leaf explants were cultured in liquid Murashige and Skoog (MS) medium augmented with combinations of 2, 4-dichlorophenoxyacetic acid (1 mg L) and α-naphthaleneacetic acid (1 mg L). Maximum growth index of the cell suspension was 9.9, which was achieved during 20th day of culture (final phase of exponential growth). At this stage, the biomass accumulated was 1.09 ± 0.09 g dry weight (DW) and the 20-hydroxyecdysone concentration was 0.24 mg g DW. Eliciting the cultures with 0.6 mM Methyl jasmonate for 6 days; enhanced the production of 20-hydroxyecdysone production to 0.35 mg g DW. By augmenting the cultures with the precursors namely cholesterol (10 mg L) and 7-dehydrocholesterol (10 mg L), production of 20-hydroxyecdysone was boosted to 0.31 mg g DW and 0.28 mg g DW respectively.

Authors : John Reshma , Shajitha P P , Devassy Aneesha , Mathew Linu ,

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