Contamination of organic pollutants in the environment is usually accompanied by heavy metals. However, a little information on the influences of heavy metals on the uptake, translocation and transformation of organic pollutants in plants is available. In this study, ten-day hydroponic exposure was conducted to explore the influence of copper (Cu) on the bioaccumulation and biotransformation of polychlorinated biphenyls (PCBs) in intact young rice (Oryza sativa L.). Low dose of Cu (≤100 μmol/L) increased the accumulation of CB-61 in rice plants, while excess concentrations of Cu (>100 μmol/L) inhibited uptake and translocation of CB-61. Effect of Cu on the uptake of CB-61 was attributed to the Cu-triggered damage to the roots of rice plants. The presence of a moderate dose of Cu (50 μmol/L) enhanced the formation of hydroxylated polychlorinated biphenyls (OH-PCBs) and methoxylated polychlorinated biphenyls (MeO-PCBs), whereas excess concentrations of Cu (250 μmol/L) inhibited the metabolism of CB-61. The effect of Cu on the interconversion between 4′

环境中有机污染物的污染通常伴有重金属。但是，有关重金属对植物中有机污染物的吸收，转运和转化影响的信息很少。在这项研究中，进行了为期十天的水耕暴露，以探索铜（Cu）对完整幼米（Oryza sativa）中多氯联苯（PCB）的生物积累和生物转化的影响L.）。低剂量的铜（≤100μmol/ L）增加了水稻植物中CB-61的积累，而过量的铜（> 100μmol/ L）则抑制了CB-61的吸收和转运。铜对CB-61吸收的影响归因于铜触发的对水稻根部的伤害。中等剂量的Cu（50μmol/ L）的存在会增强羟基化多氯联苯（OH-PCBs）和甲氧基化多氯联苯（MeO-PCBs）的形成，而过量的Cu（250μmol/ L）会抑制代谢CB-61。Cu对4′间相互转化的影响