多氯联苯(Polychlorinated biphenyls, PCBs)是一种持久性有机污染物, 对人类和自然环境具有很大的威胁, 降解PCBs一直是研究的热点。在目前的研究方法中生物降解最具潜力, 生物降解主要分为微生物降解、植物修复和微生物-植物共同修复3个方面。文章着重介绍了微生物降解PCBs菌株的分离, 降解相关基因的克隆和改造; 同时对植物修复, 植物与微生物共同修复以及植物转基因修复进行了讨论。

As one of the persistent organic pollutants, polychlorinated biphenyls are harmful to the environment and humans. Biodegradation is the most potential way to remove PCBs. Biodegradation can mainly be divided into microbial deg-radation, phytoremediation, plant and microbial combined remediation. Here, we introduced isolation of the PCBs-degrad-ing strains, cloning and modification of the related degradation genes. Additionally, on the other hand, the natural remedia-tion of plant, plant and microbial combined remediation, plant transgenic remediation were described.