Optimization of Adventitious Root Culture for Production of Biomass and Secondary Metabolites in Prunella vulgaris L

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Abstract

Adventitious root cultures of Prunella vulgaris L. were established in shaking flask system for the production of biomass and secondary metabolites. Adventitious root cultures were induced from callus cultures obtained from leaf explants on solid Murashige and Skoog (MS) medium containing combination of 6-benzyladenine (BA; 1.0 mg l−1) and naphthalene acetic acid (NAA; 1.5 mg l−1). Thereafter, 0.49 g inoculum was transferred to liquid MS medium supplemented with different concentrations of NAA (0.5–2.0 mg l−1). Growth kinetics of adventitious roots was recorded with an interval of 7 days for 49 days period. Highest biomass accumulation (2.13 g/l) was observed in liquid medium containing 1.0 mg l−1 NAA after 21 days of inoculation. However, other concentrations of NAA also showed similar accumulation pattern but the biomass gradually decreases after 49 days of inoculation. Adventitious roots were collected and dried for investigation of total phenolics (TP), total flavonoids (TF), and antioxidant activities. Higher TPC (0.995 GAE mg/g-DRB) and TFC (6.615 RE mg/g-DRB) were observed in 0.5 mg l−1 NAA treated cultures. In contrast, higher antioxidant activity (83.53 %) was observed 1.5 mg l−1 NAA treated cultures. These results are helpful in up scaling of root cultures into bioreactor for secondary metabolites production.

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Fazal, H., Abbasi, B. H., & Ahmad, N. (2014). Optimization of Adventitious Root Culture for Production of Biomass and Secondary Metabolites in Prunella vulgaris L. Applied Biochemistry and Biotechnology, 174(6), 2086–2095. https://doi.org/10.1007/s12010-014-1190-x

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