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首页> 外文期刊>Environmental Science & Technology >Metabolism of Ibuprofen by Phragmites australis: Uptake and Phytodegradation
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Metabolism of Ibuprofen by Phragmites australis: Uptake and Phytodegradation

机译：芦苇对布洛芬的代谢：摄取和植物降解

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摘要

This study explores ibuprofen (IBP) uptake and transformation in the wetland plant species Phragmites australis and the underlying mechanisms. We grew P. australis in perlite under greenhouse conditions and treated plants with 60 µg/L of IBP. Roots and rhizomes (RR), stems and leaves (SL), and liquid samples were collected during 21 days of exposure. Results show that P. australis can take up, translocate, and degrade IBP. IBP was completely removed from the liquid medium after 21 days with a half-life of 2.1 days. IBP accumulated in RR and was partly translocated to SL. Meanwhile, four intermediates were detected in the plant tissues: hydroxy-IBP, 1,2-dihydroxy-IBP, carboxy-IBP and glucopyranosyloxy-hydroxy-IBP. Cytochrome P450 monooxygenase was involved in the production of the two hydroxy intermediates. We hypothesize that transformation of IBP was first catalyzed by P450, and then by glycosyltransferase, followed by further storage or metabolism in vacuoles or cell walls. No significant phytotoxicity was observed based on relative growth of plants and stress enzyme activities. In conclusion, we demonstrated for the first time that P. australis degrades IBP from water and is therefore a suitable species for application in constructed wetlands to clean wastewater effluents containing IBP and possibly also other micropollutants.
机译：这项研究探讨了布洛芬（IBP）在湿地植物物种芦苇中的吸收和转化及其潜在机理。我们在温室条件下在珍珠岩中种植了澳大利亚假单胞菌，并用60 µg / L的IBP处理过的植物。在暴露的21天中收集了根和根茎（RR），茎叶（SL）和液体样品。结果表明，澳大利亚假单胞菌可以吸收，转运和降解IBP。 21天后，IBP从液体培养基中完全去除，半衰期为2.1天。 IBP在RR中积累，部分转移到SL。同时，在植物组织中检测到四种中间体：羟基-IBP，1,2-二羟基-IBP，羧基-IBP和吡​​喃葡糖氧基-羟基-IBP。细胞色素P450单加氧酶参与了两种羟基中间体的生产。我们假设IBP的转化首先被P450催化，然后被糖基转移酶催化，然后在液泡或细胞壁中进一步储存或代谢。基于植物的相对生长和胁迫酶活性，未观察到明显的植物毒性。总之，我们首次证明了澳大利亚假单胞菌可以从水中降解IBP，因此是在人工湿地中清洁含有IBP以及其他微污染物的废水的合适物种。

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  • 来源
    《Environmental Science & Technology》 |2017年第8期|4576-4584|共9页
  • 作者

    Yujie He; Alette A. M. Langenhoff; Nora B. Sutton; Huub H. M. Rijnaarts; Marco H. Blokland; Feiran Chen; Christian Huber; Peter Schroeder;

  • 作者单位

    Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands;

    Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands;

    Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands;

    Department of Environmental Technology, Wageningen University and Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands;

    RIKILT-Institute of Food Safety, Wageningen University and Research, P.O. Box 2306, 6700 AE Wageningen, The Netherlands;

    Helmholtz Zentrum Miinchen, GmbH, German Research Center for Environmental Health, Research Unit Environmental Genomics, Ingolstaedter Landstraße 1, D-85764 Neuherberg, Germany;

    Helmholtz Zentrum Miinchen, GmbH, German Research Center for Environmental Health, Research Unit Environmental Genomics, Ingolstaedter Landstraße 1, D-85764 Neuherberg, Germany;

    Helmholtz Zentrum Miinchen, GmbH, German Research Center for Environmental Health, Research Unit Environmental Genomics, Ingolstaedter Landstraße 1, D-85764 Neuherberg, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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