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- W2919488219 abstract "Light is the most important physical factor in growth and development of plants. Light intensity is directly proportional to the growth and accumulation of natural antioxidants during in vitro cultures of various medicinal plants. The present research study was designed to determine the effect of different light intensities i.e. normal light (2000–2500 lx), diffused light (500–1000 lx) and complete dark (0 lx) on callus growth dynamics and production of natural antioxidants in olive cult. Arbosana. Highest callus induction frequency (50%) was observed in the stem explants pre-treated with silver nanoparticles suspension (AgNPs: 50 ppm) and cultured on MS media supplemented with combination of 6-Benzylaminopurine (BAP: 2 mg/l), Gibberellic acid (GA3: 1.5 mg/l) plus Naphthalene acetic acid (NAA: 0.5 mg/l). Maximum callus biomass (FW = 1414 mg/l) was recorded when the cultured explants were incubated initially for seven days in complete darkness, followed by transference to diffused light for one week and then finally placed under normal light in total fifty six days culture period. Moreover, phytochemical analysis of the callus cultures showed significantly higher activities of antioxidant enzymes i.e. SOD, POD, CAT and APx (2.45, 2.96, 2.57 and 1.67 U/mg. protein) in the callus cultures grown under dark condition as compared with other light treatments. For non-enzymatic antioxidant potential, maximum activity of TPC, TFC, PAL and DPPH (2.42 mg GAE/g, 1.50 mg QAE/g, 3.95 U/mg and 75%) were recorded in the calli raised in vitro under diffused light. This is the first report on the production of natural antioxidants in response to different light intensities in callus cultures of Olea europaea. Future studies should focus on large scale production of callus cultures in order to yield maximum biomass from this high valued plant." @default.
- W2919488219 created "2019-03-11" @default.
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- W2919488219 date "2019-04-01" @default.
- W2919488219 modified "2023-10-17" @default.
- W2919488219 title "Feasible production of biomass and natural antioxidants through callus cultures in response to varying light intensities in olive (Olea europaea. L) cult. Arbosana" @default.
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- W2919488219 doi "https://doi.org/10.1016/j.jphotobiol.2019.03.001" @default.
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