Current research situation and prospect of microorganism response to polycyclic aromatic hydrocarbons contaminated soil
Polycyclic aromatic hydrocarbons(PAHs) are the most persistent organic pollutants with strong carcinogenic,teratogenic and mutagenic effect in soil.Soil microbe can not only degrade organic pollutants and restore contaminated soil,but also sensitively reflect the changes of soil environment quality,thus widely applied in bioremediation and bio-indicator of soil pollution.Microbial degradation and restoration of organic pollutants contaminated soil,and the microbial indicators of soil environment quality were summarized in this paper.Present research situations including soil microbial activity and diversity as the indicators of PAHs polluted soil;screening of highly efficient degradation bacteria and microbial degradation pathway,as well as the remediation technology and methods of PAHs contaminated soil were discussed.According to the problems existing in the present studies,the future research prospect was advocated to provide critical facts for exploring response and remediation mechanism of soil micro-organism to PAHs contaminated soil.