Establishment of phytoremediation technologies of contaminated soils using heavy metal accumulating woody plants

杨柳（Salix sp.）植物有能力吸收高含量的有毒金属。在这项工作中，我调查了植物修复潜力的杨柳植物清理金属污染的环境。利用同步辐射X射线微区分析等物理化学证据，确定了植物体内的几个富集位点和内源金属的形态。组织特异性cDNA文库的构建，以确定金属积累和解毒的基因。还对生长在老矿区附近的杨柳植物进行了检查，以评估该植物在野外的金属积累能力。

Willow(Salix sp.) plants have the capability to take up high levels of toxic metals. In this work, I have investigated the phytoremediation potential of the willow plants to clean up the metal pollution in the environment. Several accumulation sites in the plant body and speciation of the endogenous metals were identified by using physicochemical evidences including synchrotron-radiation based X-ray microanalyses. Tissue specific cDNA libraries were constructed to identify the genes for metal accumulation and detoxification. Willow plants growing near an old mining site was also examined to evaluate the metal accumulating ability of this plant in the field.