Bao Tong, Sun Lina, Sun Tieheng, Zhang Pin, Niu Zhixin
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.
Bull Environ Contam Toxicol. 2009 Mar;82(3):338-42. doi: 10.1007/s00128-008-9573-8. Epub 2008 Nov 11.
Phytoremediation is a promising tool in removing pollutants from the environment or in rendering them harmless. The objective of this research was to determine the effect of iron-deficiency on the uptake of cadmium by Solanum nigrum L. Results showed that iron-deficiency induced cadmium uptake, biomass decrease and changes in pH and Eh in hydroponic culture. Under iron-deficiency status, the decrease in pH and the increase in Eh might result in higher cadmium availability. Bioconcentration and translocation factors indicated that iron-deficiency status affected cadmium accumulation and translocation in Solanum nigrum L.
植物修复是从环境中去除污染物或使其无害化的一种很有前景的手段。本研究的目的是确定缺铁对龙葵吸收镉的影响。结果表明，缺铁会诱导水培条件下龙葵对镉的吸收、生物量降低以及pH值和氧化还原电位（Eh）的变化。在缺铁状态下，pH值降低和Eh值升高可能导致镉的有效性更高。生物富集和转运系数表明，缺铁状态影响龙葵中镉的积累和转运。
