Phytoremediational approaches to combat Heavy Metal Pollution: A Brief Overview
The heavy metal pollution has caused detrimental effects on human health. Arsenic (As) being ubiquitously present as As (V) and As (III) in soil, enters the food chain through inefficient agricultural practices. Phytoremediation; an eco-friendly, solar energy driven technique has been proposed to remediate the heavy metal contaminated sites. It involves the optimum utilization of certain plants that potentially channelize the heavy metal through them, converting them into lesser toxic forms. Due to certain limitations like; slow accumulation within plants, lesser plant root biomass, etc., phytoremediation is now coupled chemically or with microbes for enhanced remediational results. However, nowadays research is emphasised on developing metal tolerant transgenic plants, which could survive under extreme conditions and yield better plant productivity.