| Nowadays，heavy metals pollution of soil has become serious all over the world, mankind is faced with health threats of heavy metals entering the food chain. Phytoremediation has received wide concern with the advantages of green, cost-effective and in situ treatment. As the core of phytoremediation, hyper accumulator has abundant germplasm resources and whose mechanism of adsorption,transport and detoxification has been studied further in the past few years. The phytoremediation for soil contaminated by heavy metal can be classified into three types of phytoextraction, phytostabilization and phytovolatilization, the feasibility of these types has also been identified by scholars by laboratory facilities of hydroponics and pot experiment. Combined with recent international application case, the mechanism of strengthening measures for phytoremediation including chelating agent, microorganism, genetic engineering and agronomic practices was respectively illustrated, and the prospective research direction of phytoremediation was also outlooked. |
