Phenolics content and PAL and PPO activity of Ocimum basilicum L. with coronatine pretreatment under arsenic toxicity
Enhancing antioxidant pool especially phenolic compounds accumulation is one of the most important non enzymatic tools of plants to resist environmental stresses. In this investigation، basil (Ocimum basilicum L.) seedlings، grown in a control condition and irrigated with Hoagland nutrient solution، were treated withcoronatine (COR) at 0 (Control)، 50 and 100 nM and different concentrations of As (V) at 0 (Control)، 150 and 300 µM. Then some parameters in treated plants were measured. Increasing of lipid peroxidation and electrolyte leakage and H2O2 accumulation in basil leaves were the symptoms of arsenate toxicity that were ameliorated by COR pretreatment. Increasing phenolic compound contents، flavonoid and anthocyanin content and enhancing PAL and PPO activity indicate that COR as a jasmonates analogue may ameliorate arsenic toxicity in O. basilicum seedlings by improving antioxidative defense system.
Iranian Journal of Medical and Aromatic Plants, Volume:31 Issue:1, 2015
52 - 62  
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