Biotransformation of lincomycin and fluoroquinolone antibiotics by the ammonia oxidizers AOA, AOB and comammox: A comparison of removal, pathways, and mechanisms
文献类型：期刊论文
| 作者 | Zhou, Li-Jun; Han, Ping; Zhao, Mengyue; Yu, Yaochun; Sun, Dongyao; Hou, Lijun; Liu, Min; Zhao, Qiang; Tang, Xiufeng; Kluemper, Uli |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 196 |
| 英文摘要 | In this study, we evaluated the biotransformation mechanisms of lincomycin (LIN) and three fluoro-quinolone antibiotics (FQs), ciprofloxacin (CFX), norfloxacin (NFX), and ofloxacin (OFX), which regularly enter aquatic environments through human activities, by different ammonia-oxidizing microorganisms (AOM). The organisms included a pure culture of the complete ammonia oxidizer (comammox) Nitro -spira inopinata, an ammonia oxidizing archaeon (AOA) Nitrososphaera gargensis, and an ammonia-oxidizing bacterium (AOB) Nitrosomonas nitrosa Nm90. The removal of these antibiotics by the pure microbial cul-tures and the protein-normalized biotransformation rate constants indicated that LIN was significantly co-metabolically biotransformed by AOA and comammox, but not by AOB. CFX and NFX were signifi-cantly co-metabolized by AOA and AOB, but not by comammox. None of the tested cultures transformed OFX effectively. Generally, AOA showed the best biotransformation capability for LIN and FQs, followed by comammox and AOB. The transformation products and their related biotransformation mechanisms were also elucidated. i) The AOA performed hydroxylation, S-oxidation, and demethylation of LIN, as well as nitrosation and cleavage of the piperazine moiety of CFX and NFX; ii) the AOB utilized nitro-sation to biotransform CFX and NFX; and iii) the comammox carried out hydroxylation, demethylation, and demethylthioation of LIN. Hydroxylamine, an intermediate of ammonia oxidation, chemically reacted with LIN and the selected FQs, with removals exceeding 90%. Collectively, these findings provide impor-tant fundamental insights into the roles of different ammonia oxidizers and their intermediates on LIN and FQ biotransformation in nitrifying environments including wastewater treatment systems. (c) 2021 Elsevier Ltd. All rights reserved. |
| 源URL | [http://159.226.73.51/handle/332005/20539]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Zhou, Li-Jun,Han, Ping,Zhao, Mengyue,et al. Biotransformation of lincomycin and fluoroquinolone antibiotics by the ammonia oxidizers AOA, AOB and comammox: A comparison of removal, pathways, and mechanisms[J]. WATER RESEARCH,2021,196. |
| APA | Zhou, Li-Jun.,Han, Ping.,Zhao, Mengyue.,Yu, Yaochun.,Sun, Dongyao.,...&Wu, Qinglong L..(2021).Biotransformation of lincomycin and fluoroquinolone antibiotics by the ammonia oxidizers AOA, AOB and comammox: A comparison of removal, pathways, and mechanisms.WATER RESEARCH,196. |
| MLA | Zhou, Li-Jun,et al."Biotransformation of lincomycin and fluoroquinolone antibiotics by the ammonia oxidizers AOA, AOB and comammox: A comparison of removal, pathways, and mechanisms".WATER RESEARCH 196(2021). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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