Faculty of Sciences, Department of Biology and Ecology, University of Novi Sad, Novi Sad, Serbia.
Institute of Lowland Forestry and Environment, University of Novi Sad, Novi Sad, Serbia.
Int J Phytoremediation. 2020;22(1):29-39. doi: 10.1080/15226514.2019.1633999. Epub 2019 Jul 31.
During the past decade, the target in cleaning polluted sites is an application of chelating agents, such as citric acid (CA), which is proposed as a good candidate in the promotion of phytoremediation. Among heavy metals, cadmium (Cd) is one of the most common and dangerous elements, which strongly disturbs morphophysiological properties in plants. A pot experiment was assessed to evaluate the influence of CA in Cd phytoremediation in alkaline soil by (clone SV068). The effects of CA on Cd bioavailability, mobility, and distribution in plants, various morphometric measurements, and physiological performances as photosynthesis, transpiration, water use efficiency, and pigment content were tested. The highest Cd accumulation was evident after 60 days of growing, in plants subjected to combined treatment of CA with a higher dose of Cd. Application of CA showed a beneficial effect in maintaining the photosynthetic rate as well as gas exchange capacity in willows grown in Cd-contaminated soil. Furthermore, CA slightly increased plant growth and biomass production, depending on applied Cd dose and harvest period. A chelating agent like CA showed strong influence in plant response to combat Cd toxicity.
在过去的十年中，污染场地的清理目标是应用螯合剂，如柠檬酸（CA），CA 被提议作为促进植物修复的良好候选物。在重金属中，镉（Cd）是最常见和最危险的元素之一，它强烈干扰植物的形态和生理特性。通过（克隆 SV068）进行了盆栽实验来评估 CA 在碱性土壤中 Cd 植物修复中的影响。测试了 CA 对 Cd 生物利用度、植物中迁移和分布、各种形态测量以及光合作用、蒸腾作用、水分利用效率和色素含量等生理性能的影响。在 60 天的生长后，在 CA 与较高剂量 Cd 联合处理的植物中，Cd 的积累量最高。在 Cd 污染土壤中生长的柳树中，CA 的应用显示出对维持光合作用和气体交换能力的有益影响。此外，CA 还略微增加了植物的生长和生物量的产生，这取决于施加的 Cd 剂量和收获期。像 CA 这样的螯合剂对植物应对 Cd 毒性的反应有很大的影响。
