Department of Plant Production and Genetics, College of Agriculture, Shiraz University, Shiraz, Iran.
Department of Water Science and Engineering, College of Agriculture and Natural Resources, Ardakan Unversity, Yazd, Iran.
Int J Phytoremediation. 2022;24(11):1133-1140. doi: 10.1080/15226514.2021.2008865. Epub 2021 Dec 6.
The impact of gradually increased soil levels of copper (Cu) and cadmium (Cd) on the medicinal plant, , irrigated with metal-enriched water was determined. Plants were treated with 2.54, 5.08, 10.16, and 20.32 µg mL for Cu and 6.13, 12.26, 24.52, and 49 µg mL for Cd. The rate of phytoremediation was measured by bioconcentration factor (BCF) and the relative bioconcentration factor (RBCF). The movement of metal ions from roots to shoots was calculated as the Translocation Factor (TF). The exposure of plants to Cd or Cu decreased plant growth and increased Cd and Cu concentration in their shoots and roots. The weight of both shoots and roots decreased linearly with the increase of Cu and Cd contents in roots and shoots. Cd was more toxic than Cu as expected. The water content of shoots and roots decreased linearly as heavy metal levels increased. can take up Cu and Cd in both Cu- and Cd-contaminated soils but was more capable for transporting Cd from roots to shoots rather than Cu although more Cu is taken up by roots. is a natural accumulator of Cu and Cd and can be used in phytoremediation.CONCISE NOVEL ASPECTS OF THIS STUDYThis is the first report to show that the medicinal plant is an accumulator for Cu and Cd.This was determined by gradual addition of the metals to the soil via irrigation by heavy metal-polluted water which can provide an opportunity for the plant to develop a metal-resistance mechanism.Choosing suitable plant species for heavy metal accumulation is a critical step for successful phytoremediation of heavy metal pollutants.CORE IDEASProsopis farcta is of interest as a medicinal plant. can take up Cu and Cd in both Cu- and Cd-contaminated soils. transports more Cd from roots to shoots but more Cu is taken up.
用富金属水灌溉逐渐增加土壤铜（Cu）和镉（Cd）水平，研究其对药用植物 的影响。植物用 2.54、5.08、10.16 和 20.32μg mL 的 Cu 以及 6.13、12.26、24.52 和 49μg mL 的 Cd 进行处理。通过生物浓缩因子（BCF）和相对生物浓缩因子（RBCF）来衡量植物修复的速度。将金属离子从根部转移到茎部的过程计算为迁移因子（TF）。植物暴露在 Cd 或 Cu 中会降低植物的生长，增加其茎和根中 Cd 和 Cu 的浓度。随着根部和茎部中 Cu 和 Cd 含量的增加，茎和根的重量呈线性下降。如预期的那样，Cd 比 Cu 更具毒性。随着重金属水平的升高，茎和根的含水量呈线性下降。 可以在 Cu 和 Cd 污染的土壤中吸收 Cu 和 Cd，但更能够将 Cd 从根部运输到茎部，而不是 Cu，尽管根部吸收的 Cu 更多。 是 Cu 和 Cd 的天然积累者，可以用于植物修复。本研究的新颖之处这是首次报道药用植物 是 Cu 和 Cd 的积累者。这是通过通过用重金属污染的水灌溉土壤来逐渐向土壤中添加金属来确定的，这为植物发展金属抗性机制提供了机会。选择适合重金属积累的植物物种是重金属污染物成功植物修复的关键步骤。核心思想普洛蒂亚·法卡特是一种药用植物。可以在 Cu 和 Cd 污染的土壤中吸收 Cu 和 Cd。从根部向茎部运输更多的 Cd，但吸收的 Cu 更多。
