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Uptake, Translocation, and Biotransformation of Organophosphorus Esters in Wheat (Triticum aestivum L.)
Wan, Weining; Huang, Honglin; Lv, Jitao; Han, Ruixia; Zhang, Shuzhen
2017
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume51Issue:23Pages:13649-13658
AbstractThe uptake, translocation and biotransformation of organophosphate esters (OPEs) by wheat (Triticum aestivum L.) were investigated by a hydroponic experiment. The results demonstrated that OPEs with higher hydrophobicity were more easily taken up by roots, and OPEs with lower hydrophobicity were more liable to be translocated acropetally. A total of 43 metabolites including dealkylated, oxidatively dechlorinated, hydroxylated, methoxylated, and glutathione-, and glucuronideconjugated products were detected derived from eight OPEs, with diesters formed by direct dealkylation from the parent triesters as the major products, followed with hydroxylated triesters. Molecular interactions of OPEs with plant biomacromolecules were further characterized by homology modeling combined with molecular docking. OPEs with higher hydrophobicity were more liable to bind with TaLTP1.1, the most important wheat nonspecific lipid transfer protein, consistent with the experimental observation that OPEs with higher hydrophobicity were more easily taken up by wheat roots. Characterization of molecular interactions between OPEs and wheat enzymes suggested that OPEs were selectively bound to TaGST4-4 and CYP71C6v1 with different binding affinities, which determined their abilities to be metabolized and form metabolite products in wheat. This study provides both experimental and theoretical evidence for the uptake, accumulation and biotransformation of OPEs in plants.
Department环境化学与生态毒理学国家重点实验室
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/39454
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Wan, Weining,Huang, Honglin,Lv, Jitao,et al. Uptake, Translocation, and Biotransformation of Organophosphorus Esters in Wheat (Triticum aestivum L.)[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(23):13649-13658.
APA Wan, Weining,Huang, Honglin,Lv, Jitao,Han, Ruixia,&Zhang, Shuzhen.(2017).Uptake, Translocation, and Biotransformation of Organophosphorus Esters in Wheat (Triticum aestivum L.).ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(23),13649-13658.
MLA Wan, Weining,et al."Uptake, Translocation, and Biotransformation of Organophosphorus Esters in Wheat (Triticum aestivum L.)".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.23(2017):13649-13658.
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