Abstract:Soil As contamination, which is dangerous to plants and human and may cause elevation of As concentrations in the surrounding waters, is a widespread and severe environmental problem both in China and in the world. Phytoremediation, which is an emerging plant-based technology for the removal of pollutants, have been successfully applied to remediate heavy metal contaminated soils. Pteris vittata L., an indicator plant for calcareous soils, is an As-hyperaccumulator newly discovered by Chen et al. in China. ...