Journal of Soil and Plant Interactions
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1- Department of Soil Science, Isf.C., Islamic Azad University, Isfahan, Iran.
2- Department of Soil Science, Isf.C., Islamic Azad University, Isfahan, Iran. ,e_chavoshi@iau.ac.ir
3- Department of Soil Science, College of Agriculture, University of Kufa, Iraq.
2- Department of Soil Science, Isf.C., Islamic Azad University, Isfahan, Iran. ,
3- Department of Soil Science, College of Agriculture, University of Kufa, Iraq.
Abstract: (3 Views)
Background and Objective: Due to the low cost in a long-term application and environmental friendliness, the use of biological remediation has gained significant attention in recent decades. This study aimed to investigate the use of ornamental plants and arbuscular mycorrhizal fungi (AMF) for phytoremediation of lead contaminated soil under greenhouse conditions.
Methods: The research was conducted as a factorial in a completely randomized design with three factors of plant type (Gladiolus (Gladiolus grandiflorus), Ornamental cabbage (Brassica oleracea), marigold (Tagetes erecta)), heavy metal (0, 25, 50, 100 and 200 mg/kg) and fungus (with/without arbuscular mycorrhizal fungi) in 3 replications. Harvesting was carried out after the plants reached the flowering stage. The concentrations of lead in plant tissues and soil, uptake, bioaccumulation factor (BCF), transfer factor (TF) of lead and plant growth parameters were measured.
Results: The Pb concentration in the roots and shoots of ornamental plants increased significantly due to the increase in soil Pb concentration. The root Pb concentrations were about 2 to 4 times its concentration in the shoots (at different Pb levels). Translocation factor for Pb in all plants were less than one. AMF inoculation significantly increased shoots and root dry weight of G. grandiflorus and B. oleracea under lead stress. Also, AMF inoculation significantly increased Pb concentration, Pb uptake, and root BCFs of all three ornamental plants compared to non-inoculated treatments. The root BCFs of all ornamental plants were greater than one, but no significant difference was observed across its values within 3 plants.
Conclusion: Overall, the results showed that mycorrhizal fungi modulate metal accumulation and physiological traits differently in the studied ornamental plants.
Methods: The research was conducted as a factorial in a completely randomized design with three factors of plant type (Gladiolus (Gladiolus grandiflorus), Ornamental cabbage (Brassica oleracea), marigold (Tagetes erecta)), heavy metal (0, 25, 50, 100 and 200 mg/kg) and fungus (with/without arbuscular mycorrhizal fungi) in 3 replications. Harvesting was carried out after the plants reached the flowering stage. The concentrations of lead in plant tissues and soil, uptake, bioaccumulation factor (BCF), transfer factor (TF) of lead and plant growth parameters were measured.
Results: The Pb concentration in the roots and shoots of ornamental plants increased significantly due to the increase in soil Pb concentration. The root Pb concentrations were about 2 to 4 times its concentration in the shoots (at different Pb levels). Translocation factor for Pb in all plants were less than one. AMF inoculation significantly increased shoots and root dry weight of G. grandiflorus and B. oleracea under lead stress. Also, AMF inoculation significantly increased Pb concentration, Pb uptake, and root BCFs of all three ornamental plants compared to non-inoculated treatments. The root BCFs of all ornamental plants were greater than one, but no significant difference was observed across its values within 3 plants.
Conclusion: Overall, the results showed that mycorrhizal fungi modulate metal accumulation and physiological traits differently in the studied ornamental plants.
Type of Study: Research |
Subject:
Plant growth under stressful conditions
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Journal of Soil and Plant Interactions by http://jspi.iut.ac.ir is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
