Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16521 Prague, Czech Republic.
Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16521 Prague, Czech Republic.
J Hazard Mater. 2021 May 5;409:124524. doi: 10.1016/j.jhazmat.2020.124524. Epub 2020 Nov 10.
This study investigated the effects of arbuscular mycorrhizal fungi (AMF) colonization on the growth of wetland plants (Glyceria maxima), and treatment performance in constructed wetlands (CWs) under the stress of pharmaceuticals ibuprofen (IBU) and diclofenac (DCF). Results showed that the growth of G. maxima was significantly increased by AMF colonization. AMF significantly increased the activities of antioxidant enzymes (peroxidase and superoxide dismutase) and soluble protein content in wetland plants, but the contents of malondialdehyde and O were reduced. The removal efficiencies of TOC, PO-P, NH-N, and TN were increased in AMF+ treatments by 6%, 11%, 15% and 11%, respectively. AMF increased the removal efficiencies of IBU and DCF by 6-14% and 2-21%, respectively, and reduced the content of their metabolites (2-OH IBU, CA IBU and 4'-OH DCF) in the effluent. Besides, the presence of AMF increased the contents of IBU and DCF in plant roots, while decreased their transportation to shoots. AMF symbiosis decreased the contents of IBU metabolites (2-OH IBU and CA IBU) but increased the contents of DCF metabolite (4'-OH DCF) in the roots of the host plant. In conclusion, these results indicated that AMF plays a promising role in CWs for emerging pollutants removal.
本研究调查了丛枝菌根真菌（AMF）定殖对湿地植物（高冰草）生长的影响，以及在药品布洛芬（IBU）和双氯芬酸（DCF）胁迫下人工湿地（CWs）的处理性能。结果表明，AMF 定殖显著促进了高冰草的生长。AMF 显著增加了湿地植物抗氧化酶（过氧化物酶和超氧化物歧化酶）的活性和可溶性蛋白含量，同时降低了丙二醛和 O 的含量。与对照相比，AMF+处理的 TOC、PO-P、NH-N 和 TN 的去除效率分别提高了 6%、11%、15%和 11%。AMF 提高了 IBU 和 DCF 的去除效率，分别提高了 6-14%和 2-21%，并降低了出水的代谢物（2-OH IBU、CA IBU 和 4'-OH DCF）含量。此外，AMF 的存在增加了植物根部 IBU 和 DCF 的含量，同时减少了它们向地上部分的运输。AMF 共生降低了 IBU 代谢物（2-OH IBU 和 CA IBU）的含量，但增加了宿主植物根部 DCF 代谢物（4'-OH DCF）的含量。总之，这些结果表明，AMF 在去除新兴污染物的 CWs 中具有很大的应用潜力。
