土壤重金属污染的植物修复与金属超富集植物及其遗传工程研究

Phytoremediation for heavy metal contamination in soil,metal hyperaccumulator and their genetic engineering

本文综述了土壤重金属污染的植物修复、金属超富集植物及其遗传工程的最新研究进展及存在问题,并提出加紧筛选和发现野生高生物量的金属超富集植物,在现有高生物量作物种质资源中筛选金属超富集作物,应用遗传工程技术把野生植物的超富集基因转移到现有高生物量植物(作物)中,寻找综合、可持续的植物修复手段等对策。

The field applications of phytoremediation on heavy metal contamination in soil rely on the discovery, screening and exploitation of metal hyperaceumulators, in which the genetic engineering has broad perspectives. The authors address the latest advances on phytoremediation for heavy metal contamination in soil, metal hyperaccumulators and their genetic engineering, and figure out the existing problems subsequently. To speed up the researches in China, several strategies have been suggested, including screening the metal hyperaccumulators with high biomass among the natural vegetation, screening the metal hyperaceumulators among crop varieties, transferring the metal-accumulating gene of wild hyperaccumulators to the potential crops by means of the genetic engineering, and finding an integrated and sustainable phytoremediation method.