Amelorative roles 0f melatonin and sugar beet pulp pellets on pb-stressed moringa oleifera plants | ||||
| Mansoura Journal of Biology | ||||
| Volume 54, Issue 1, March 2022, Page 36-46 PDF (1.03 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjb.2022.450433 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Marwa F. A. El-Sakaan* ; Mahmoud E. Younis; Wafaa M. Shukry | ||||
| Botany Department. Faculty of Science, Mansoura University | ||||
| Abstract | ||||
| Pot experiments were conduc.0. 0ed to evaluate the effect of root and foliar uptake of Pb (100 and 400 ppm) on Moringa oleifera plants. Furthermore, the possible role of melatonin (MEL) and sugar beet pulp pellets (SBP) in ameliorating lead toxicity was investigated. The growth parameters were declined in case of soil or foliar Pb application. The foliar lead application revealed more negative effect on the growth of moringa plants than the soil application. A decline in proline and oxidative markers was observed in response to Pb stress. Also, Pb stress induced an increase in anthocyanins, ascorbic acid (AsA), total antioxidant capacity (TAC) and a decrease in reduced glutathione (GSH), DPPH-scavenging activity, as compared with the control values. The activities of ascorbate peroxidase (APX), superoxide dismutase (SOD) and glutathione reductase (GR) were negatively correlated with Pb treatments in soil and foliar application. It was found that supplemental addition of MEL or SBP showed an increase in the growth parameters and proline compared to Pb-stressed moringa plants. Moreover, there was variable changes in hydrogen peroxide, lipid peroxidation and electrolyte leakage under MEL and SBP treatments as compared with Pb-stressed plants but still less than the control values. The activities of ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT) and glutathione reductase (GR) were improved by MEL and SBP application. The ameliorating effect of SBP against lead toxicity was more pronounced than that of MEL | ||||
| Keywords | ||||
| Lead; Moringa oleifera; melatonin; sugar beet pulp; antioxidative system | ||||
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