Sabeen Maria, Mahmood Qaisar, Irshad Muhammad, Fareed Iftikhar, Khan Afsar, Ullah Farid, Hussain Jamshaid, Hayat Yousaf, Tabassum Sobia
Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan.
Department of Natural Resource Engineering and Management, University of Kurdistan Hewlêr, Kurdistan, Iraq.
Biomed Res Int. 2013;2013:324830. doi: 10.1155/2013/324830. Epub 2013 Dec 31.
The potential of Arundo donax L. for phytoextraction of cadmium (Cd) from contaminated soil and water was probed. The plants were grown under greenhouse conditions in pots containing a nutrient solution or soil with increasing doses of Cd (0, 50, 100, 250, 500, 750, and 1000 μg L(-1)) for 21 days. The growth and physiology of plants were evaluated at the end of the experiment. The maximum Cd content in root was 300 μg g(-1) during hydroponics experiments over 230 μg g(-1) in soil experiment. Cd concentration in stem was 262 μg g(-1) at 750 μg L(-1) supplied Cd in hydroponics over 191.2 μg g(-1) at 1000 in soil experiment. The maximum Cd concentration in leaves from hydroponics was 187 μg g(-1). Relatively low Cd uptake occurred during soil experiment with low translocation factor (TF) values. Both Bioaccumulation Factor (BF) and TF values for hydroponics were greater than 1. The IC50 values of ABTS and DPPH showed that both time and increasing Cd concentrations affected the production of antioxidants with lower half maximal inhibitory concentration (IC50) value on the 21st days. A. donax showed better potential for Cd remediation of aquatic environments.
对芦竹从受污染土壤和水中植物提取镉的潜力进行了探究。将植物在温室条件下种植于装有营养液或添加不同剂量镉（0、50、100、250、500、750和1000μg L⁻¹）的土壤的花盆中，培养21天。在实验结束时评估植物的生长和生理状况。水培实验中根部的最大镉含量为300μg g⁻¹，土壤实验中为230μg g⁻¹以上。水培中供应750μg L⁻¹镉时茎中的镉浓度为262μg g⁻¹，高于土壤实验中供应1000μg L⁻¹镉时的191.2μg g⁻¹。水培中叶片的最大镉浓度为187μg g⁻¹。在土壤实验中，镉的吸收相对较低，转运系数（TF）值也较低。水培的生物累积系数（BF）和TF值均大于1。ABTS和DPPH的半数抑制浓度（IC50）值表明，时间和镉浓度的增加都会影响抗氧化剂的产生，在第21天时具有较低的半数最大抑制浓度（IC50）值。芦竹对水环境中镉的修复显示出较好的潜力。
