Microbial characterization of heavy metal resistant bacterial strains isolated from an electroplating wastewater treatment plant

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Microbial characterization of heavy metal resistant bacterial strains isolated from an electroplating wastewater treatment plant
	Cai, Xunchao ; Zheng, Xin ; Zhang, Dunnan ; Iqbal, Waheed ; Liu, Changkun ; Yang, Bo ; Zhao, Xu ; Lu, Xiaoying ; Mao, Yanping
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2019-10-15
卷号	181 页码:472-480
关键词	Bacteria Heavy metal resistance Resistant gene Electroplating wastewater
ISSN号	0147-6513
英文摘要	Heavy metal pollution is one of the most widespread and complex environmental issues globally, posing a great threat to the ecosystem as well as human health. Bioremediation through heavy metal-resistant bacteria (HMRB) is currently the most promising technology to address this issue. To obtain HMRB to remediate heavy metal pollution potentially, 15 culturable HMRB strains were isolated from the sludge samples of an electroplating wastewater treatment plant (EWWTP), which belonged to the Bacillus, Shewanella, Lysinibacillus, and Acinetobacter genera. Their maximum tolerance concentrations to Cu2+, Ni2+, Mn2+, Co2+, and Cr2O72- were 40 mM, 10 mM, 200 mM, 40 mM, and 10 mM, respectively, and strain Mn1-4 showed much higher Mn2+ tolerance and removal effectiveness (3.355 g/L) than previously published reports. Moreover, multiple heavy metal-resistant genotypes and phenotypes were identified among these strains, of which strain Co1-1 carried the most of resistant gene sequences (10) and exhibited resistance to 7 categories of heavy metals, and the co-occurrence of heavy metal and antibiotic resistance were clearly observed in strain Ni1-3. In addition, flanked insert sequence (IS) elements on the heavy metal resistant genes (HMRGs) suggested that horizontal gene transfer (HGT) events may have resulted in multiple heavy metal resistance phenotypes and genotypes in these strains, and IS982 family transposase was presumed to result in the high Ni2+ tolerance in strain Ni1-3. This study expands our understanding of bacterial heavy metal resistance and provides promising candidates for heavy metal bioremediation.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43486]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Technol & Higher Educ Inst Hong Kong, Fac Sci & Technol, Tsing Yi, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Cai, Xunchao,Zheng, Xin,Zhang, Dunnan,et al. Microbial characterization of heavy metal resistant bacterial strains isolated from an electroplating wastewater treatment plant[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2019,181:472-480.
APA	Cai, Xunchao.,Zheng, Xin.,Zhang, Dunnan.,Iqbal, Waheed.,Liu, Changkun.,...&Mao, Yanping.(2019).Microbial characterization of heavy metal resistant bacterial strains isolated from an electroplating wastewater treatment plant.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,181,472-480.
MLA	Cai, Xunchao,et al."Microbial characterization of heavy metal resistant bacterial strains isolated from an electroplating wastewater treatment plant".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 181(2019):472-480.