Phytoremediation of multiple persistent pollutants co-contaminated soil by HhSSB transformed plant
文献类型： 外文期刊
作者： Gao, Jian-Jie 1 ; Wang, Bo 1 ; Peng, Ri-He 1 ; Li, Zhen-Jun 1 ; Xu, Jing 1 ; Tian, Yong-Sheng 1 ; Yao, Quan-Hong 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Biotechnol Res Inst, 2901 Beidi Rd, Shanghai 201106, Peoples R China
2.Shanghai Acad Agr Sci, Shanghai Key Lab Agr Genet & Breeding, Shanghai 201106, Peoples R China
关键词： Enhance phytoremediation; Single strand DNA-Binding protein; 2; 4; 6 Trinitrotoluene; 2; 4; 6-Trichlorophenol
期刊名称：ENVIRONMENTAL RESEARCH （ 影响因子：6.498； 五年影响因子：6.824 ）
ISSN： 0013-9351
年卷期： 2021 年 197 卷
页码：
收录情况： SCI
摘要： The high toxicity of persistent pollutants limits the phytoremediation of pollutants-contaminated soil. In this study, heterologous expressing Halorhodospira halophila single-stranded DNA binding protein gene (HhSSB) improves tolerance to 2,4,6-trinitrotoluene (TNT), 2,4,6-trichlorophenol (2,4,6-TCP), and thiocyanate (SCN-) in A. thaliana and tall fescue (Festuca arundinacea). The HhSSB transformed Arabidopsis, and tall fescue also exhibited enhanced phytoremediation of TNT, 2,4,6-TCP, and SCN- separately contaminated soil and cocontaminated soil compared to control plants. TNT assay was selected to explore the mechanism of how HhSSB enhances the phytoremediation of persistent pollutants. Our result indicates that HhSSB enhances the phytoremediation of TNT by enhancing the transformation of TNT in Arabidopsis. Moreover, transcriptomics and comet analysis revealed that HhSSB improves TNT tolerance through three pathways: strengthening the defense system, enhancing the ROS scavenging system, and reducing DNA damage. These results presented here would be particularly useful for further studies in the remediation of soil contaminated by organic and inorganic pollutants.
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