Reductive degradation of chloramphenicol by Geobacter metallireducens

doi:10.1007/s11431-018-9415-2

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Reductive degradation of chloramphenicol by Geobacter metallireducens
	Xu HengDuo 1,2; Xiao LeiLei 2; Zheng ShiLing 2; Zhang YueChao 2,3,4; Li JiaJia 2,3,4; Liu FangHua 2,3
刊名	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
	2019-10-01
卷号	62 期号:10 页码:1688-1694
关键词	chloramphenicol Geobacter metallireducens dechlorination extracellular electron transfer reduction
ISSN号	1674-7321
DOI	10.1007/s11431-018-9415-2
通讯作者	Liu FangHua(fhliu@yic.ac.cn)
英文摘要	Geobacter metallireducens is known to be capable of removing nitroaromatic compounds via an oxidation mode. However, little attention has been paid to investigate the reductive removal of chlorinated nitroaromatic compounds by G. metallireducens. In this study, G. metallireducens was used to reduce chloramphenicol (CAP), a typical chlorinated nitroaromatic antibiotic. Cyclic voltammograms and chronoamperometry highlighted a higher peak current for CAP reduction by G. metallireducens compared to the control without bacteria. G. metallireducens efficiently reduced CAP (20 mg/L) with acetate as the sole electron donor, and the removal efficiency reached (97.6 +/- 4.9)% within 6 d. Aromatic amine (AMCl2), AMCl (dechlorinated AMCl2) and AM (dechlorinated AMCl) were identified as reduction products by liquid chromatography-mass spectrometry. However, the removal efficiency declined to (25.0 +/- 3.6)% when the CAP dosage increased to 80 mg/L. Transcriptomic analysis indicated the significant upregulation of genes related to electron transfer, such as pilus assembly protein gene (2.8 folds), NADH-quinone oxidoreductase subunit K2 gene (4.5 folds) and many c-type cytochrome genes such as cytochrome c biogenesis protein ResB (Gmet 2901, 4.6 folds), cytochrome c (Gmet 0335, 4.4 folds) and cytochrome c7 (Gmet 2902, 3.4 folds). Furthermore, a gene related to chlorinated contaminant removal (Gmet 1046, 5.4 folds) was also upregulated, possibly resulting in enhanced CAP reduction. This work deepened our knowledge of the bioremediation ability of G. metallireducens with respect to environmental contaminants and provided a potential strategy to treat antibiotics with electrochemically active bacteria.
资助项目	Postdoctoral Science Foundation of China[2018M632735] ; National Natural Science Foundation of China[91751112] ; National Natural Science Foundation of China[41573071] ; Senior User Project of RV KEXUE[KEXUE2018G01] ; Natural Science Foundation[JQ201608] ; Young Taishan Scholars Program of Shandong Province[tsqn20161054]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000504097800004
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/164229]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Liu FangHua
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Utilizat, Yantai 264003, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Shandong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu HengDuo,Xiao LeiLei,Zheng ShiLing,et al. Reductive degradation of chloramphenicol by Geobacter metallireducens[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2019,62(10):1688-1694.
APA	Xu HengDuo,Xiao LeiLei,Zheng ShiLing,Zhang YueChao,Li JiaJia,&Liu FangHua.(2019).Reductive degradation of chloramphenicol by Geobacter metallireducens.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,62(10),1688-1694.
MLA	Xu HengDuo,et al."Reductive degradation of chloramphenicol by Geobacter metallireducens".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 62.10(2019):1688-1694.