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Phytoremediation of Trichlorophenol by Phase II Metabolism in Transgenic Arabidopsis Overexpressing a Populus Glucosyltransferase

文献类型： 外文期刊

作者： Su, Zhen-Hong 1 ; Xu, Zhi-Sheng 2 ; Peng, Ri-He 2 ; Tian, Yong-Sheng 2 ; Zhao, Wei 2 ; Han, Hong-Juan 2 ; Yao, Quan-Ho 1 ;

作者机构： 1.Shanghai Jiao Tong Univ, Coll Agr & Biol, Shanghai 200240, Peoples R China

2.Shanghai Acad Agr Sci, Shanghai Key Lab Agr Genet & Breeding, Agrobiotechnol Res Inst, Shanghai 201106, Peoples R China

期刊名称：ENVIRONMENTAL SCIENCE & TECHNOLOGY （ 影响因子：9.028； 五年影响因子：9.922 ）

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收录情况： SCI

摘要： Trichlorophenol (TCP) and its derivatives are introduced into the environment through numerous sources, including wood preservatives and biocides. Environmental contamination by TCPs is associated with human health risks, necessitating the development of cost-effective remediation techniques. Efficient phytoremediation of TCP is potentially feasible because it contains a hydroxyl group and is suitable for direct phase II metabolism. In this study, we present a system for TCP phytoremediation based on sugar conjugation by overexpressing a Populus putative UDP-glc-dependent glyco-syltransferase (UGT). The enzyme PtUGT72Bl displayed the highest TCP-conjugating activity among all reported UGTs. Transgenic Arabidopsis demonstrated significantly enhancedtolerances to 2,4,5-TCP and 2,4,6-TCP. Transgenic plants also exhibited a strikingly higher capacity to remove TCP from their media. This work indicates that Populus UGT overexpression in Arabidopsis may be an efficient method for phytoremoval and degradation of TCP. Our findings have the potential to provide a suitable remediation strategy for sites contaminated by TCP.

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