Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil
Heavy metal-contaminated soil constitutes many environmental concerns. The toxic nature of heavy metals poses serious threats to human health and the ecosystem. Decontamination of the polluted soil by phytoremediation is of fundamental importance. Vegetation is an appealing and cost-effective green...
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MDPI AG
2020-08-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/9/9/1057 |
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| author | Ehab Azab Ahmad K. Hegazy |
| author_facet | Ehab Azab Ahmad K. Hegazy |
| author_sort | Ehab Azab |
| collection | DOAJ |
| description | Heavy metal-contaminated soil constitutes many environmental concerns. The toxic nature of heavy metals poses serious threats to human health and the ecosystem. Decontamination of the polluted soil by phytoremediation is of fundamental importance. Vegetation is an appealing and cost-effective green technology for the large-scale phytoremediation of polluted soils. In this paper, a greenhouse experiment was carried out to test the potential of <i>Rhazya stricta</i> as a heavy metal phytoremediator in polluted soil. Plants were grown for three months in pots filled with soils treated with the heavy metals Cd, Pb, Cu, and Zn at rates of 10, 50, and 100 mg/kg. The bioaccumulation factor (BCF) and translocation factor (TF) were calculated to detect the ability of <i>R. stricta</i> to accumulate and transfer heavy metals from soil to plant organs. The results showed that under increasing levels of soil pollution, the bioconcentration of Cd and Zn heavy metals showed the highest values in plant roots followed by leaves, whereas in the case of Pb and Cu, roots showed the highest values followed by stems. Heavy metals accumulation was higher in roots than in stems and leaves. The BCF of Zn reached the highest values in roots and stems for 10 mg/kg soil treatment, followed by the BCFs of Cd, Cu, and Pb. The TF for the different heavy metal pollutants’ concentrations was less than unity, suggesting that the plants remediate pollutants by phytostabilization. The TF values ranged from higher to lower were in the order Zn > Cu > Cd > Pb. The rapid growth of <i>R. stricta</i> and its tolerance of heavy metals, as well as its ability to absorb and accumulate metals within the plant, recommends its use in the phytoremediation of slightly polluted soils in arid lands by limiting the heavy metals transport. |
| first_indexed | 2024-03-10T17:12:56Z |
| format | Article |
| id | doaj.art-2747d821142c4b7d9c9c53061d993df9 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T17:12:56Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-2747d821142c4b7d9c9c53061d993df92023-11-20T10:36:10ZengMDPI AGPlants2223-77472020-08-0199105710.3390/plants9091057Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated SoilEhab Azab0Ahmad K. Hegazy1Biotechnology Department, Faculty of Science, Taif University, Taif 21974, Saudi ArabiaBotany and Microbiology Department, Faculty of Science, Cairo University, Giza 12613, EgyptHeavy metal-contaminated soil constitutes many environmental concerns. The toxic nature of heavy metals poses serious threats to human health and the ecosystem. Decontamination of the polluted soil by phytoremediation is of fundamental importance. Vegetation is an appealing and cost-effective green technology for the large-scale phytoremediation of polluted soils. In this paper, a greenhouse experiment was carried out to test the potential of <i>Rhazya stricta</i> as a heavy metal phytoremediator in polluted soil. Plants were grown for three months in pots filled with soils treated with the heavy metals Cd, Pb, Cu, and Zn at rates of 10, 50, and 100 mg/kg. The bioaccumulation factor (BCF) and translocation factor (TF) were calculated to detect the ability of <i>R. stricta</i> to accumulate and transfer heavy metals from soil to plant organs. The results showed that under increasing levels of soil pollution, the bioconcentration of Cd and Zn heavy metals showed the highest values in plant roots followed by leaves, whereas in the case of Pb and Cu, roots showed the highest values followed by stems. Heavy metals accumulation was higher in roots than in stems and leaves. The BCF of Zn reached the highest values in roots and stems for 10 mg/kg soil treatment, followed by the BCFs of Cd, Cu, and Pb. The TF for the different heavy metal pollutants’ concentrations was less than unity, suggesting that the plants remediate pollutants by phytostabilization. The TF values ranged from higher to lower were in the order Zn > Cu > Cd > Pb. The rapid growth of <i>R. stricta</i> and its tolerance of heavy metals, as well as its ability to absorb and accumulate metals within the plant, recommends its use in the phytoremediation of slightly polluted soils in arid lands by limiting the heavy metals transport.https://www.mdpi.com/2223-7747/9/9/1057phytoremediation<i>Rhazya stricta</i>heavy metalscontaminated soilarid lands |
| spellingShingle | Ehab Azab Ahmad K. Hegazy Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil Plants phytoremediation <i>Rhazya stricta</i> heavy metals contaminated soil arid lands |
| title | Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil |
| title_full | Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil |
| title_fullStr | Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil |
| title_full_unstemmed | Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil |
| title_short | Monitoring the Efficiency of <i>Rhazya stricta</i> L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil |
| title_sort | monitoring the efficiency of i rhazya stricta i l plants in phytoremediation of heavy metal contaminated soil |
| topic | phytoremediation <i>Rhazya stricta</i> heavy metals contaminated soil arid lands |
| url | https://www.mdpi.com/2223-7747/9/9/1057 |
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