Abstract
2,4,6-Trinitrotoluene (TNT) is released into natural environment from demilitarization facilities, manufacturing, and explosive remnants of war; this compound is one of the most recalcitrant explosives. TNT contamination is associated with human health risks because TNT strongly causes mutagenicity and carcinogenicity. Unfortunately, effective and affordable technologies to remediate TNT-contaminated environments are insufficient. As such, studies have been conducted to develop strategies using plants to extract and detoxify TNT from environment. In this study, a system was designed to overcome high phytotoxicity of TNT by expressing a NAD(P)H-flavin nitroreductase from Enterobacter cloacae to investigate the possibility of TNT phytoremediation. The resulting transgenic Arabidopsis showed a remarkable improvement in the ability to tolerate, absorb, and detoxify TNT as evidenced by their growth condition. This study can be used as reference to facilitate the effective cleanup of TNT-contaminated sites.
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Acknowledgments
The research was supported by the Key Project Fund of the Shanghai Municipal Committee of Agriculture (zhongzi2013-8, zhongzi2014-2, jizhi2014 1-3), International Scientific and Technological Cooperation (13440701700), Agriculture science technology achievement transformation fund (133919N1300, 143919N0300), National Natural Science Foundation (31071486, 31200212, 31200075, 31200076). Basic research in the field of science and technology project of Science and Technology Commission of Shanghai Municipality (14JC1403602).
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S.-H. You and B. Zhu contributed equally to this article.
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You, SH., Zhu, B., Han, HJ. et al. Phytoremediation of 2,4,6-trinitrotoluene by Arabidopsis plants expressing a NAD(P)H-flavin nitroreductase from Enterobacter cloacae . Plant Biotechnol Rep 9, 417–430 (2015). https://doi.org/10.1007/s11816-015-0379-y
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DOI: https://doi.org/10.1007/s11816-015-0379-y