干旱区生态环境知识资源中心(Arid): Bacterial community rather than metals shaping metal resistance genes in water, sediment and biofilm in lakes from arid northwestern China

Arid

DOI	10.1016/j.envpol.2019.113041
	Bacterial community rather than metals shaping metal resistance genes in water, sediment and biofilm in lakes from arid northwestern China
	Song, Wenjuan 1,2; Qi, Ran 3; Zhao, Li 1; Xue, Nana 1,2; Wang, Liyi 1,2; Yang, Yuyi 2,4,5
通讯作者	Yang, Yuyi
来源期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
EISSN	1873-6424
出版年	2019
卷号	254
英文摘要	Lakes in arid northwestern China are valuable freshwater resources that drive socioeconomic development. Environmental pollution can significantly influence the composition of microbial communities and the distribution of functional genes in lakes. This study investigated heavy metal pollution to identify possible correlations with metal resistance genes (MRGs) and bacterial community composition in water, sediment and biofilm samples from Bosten Lake and Ebi Lake in northwestern China. High levels of zinc were detected in all samples. However, the metals detected in the sediment samples of both lakes were determined to be at low risk levels according to an ecological index. The mercury resistance gene subtype merP had the greatest average abundance (4.61 x 10(-3) copies per 16S rRNA) among all the samples, followed by merA and merC. The high abundance of merA in the pelagic zone rather than in benthic sediment suggests that the pelagic microbial community was important in mercury reduction. Proteobacteria were the main phylum found in the microbial communities in all samples. However, microbial communities in most of the water, sediment and biofilm samples had different compositions, indicating that the habitat niche plays an important role in shaping the bacterial communities in lakes. The microbial community, rather than the heavy metals, was the main driver of MRG distribution. The abundances of some bacterial genera involved in the decomposition of organic matter and the terrestrial nitrogen cycle were negatively correlated with heavy metals. This result suggests that metal pollution can adversely affect the biogeochemical processes that occur in lakes. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Bosten lake Ebi lake Sediment quality guidelines Mercury resistance genes Bacterial community
类型	Article
语种	英语
国家	Peoples R China ; Scotland
收录类别	SCI-E
WOS记录号	WOS:000488887500051
WOS关键词	FRESH-WATER ; SURFACE SEDIMENTS ; RISK-ASSESSMENT ; MERCURY RESISTANCE ; OLIGOSALINE LAKE ; HEAVY-METALS ; RIVER ; CONTAMINATION ; DIVERSITY ; SALINITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-01
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310644
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100099, Peoples R China; 3.Chinese Peoples Armed Police Golden Headquarters, Beijing 100055, Peoples R China; 4.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China; 5.Univ Dundee, Sch Life Sci, Dundee DD1 5EH, Scotland
推荐引用方式 GB/T 7714	Song, Wenjuan,Qi, Ran,Zhao, Li,et al. Bacterial community rather than metals shaping metal resistance genes in water, sediment and biofilm in lakes from arid northwestern China[J]. 中国科学院新疆生态与地理研究所,2019,254.
APA	Song, Wenjuan,Qi, Ran,Zhao, Li,Xue, Nana,Wang, Liyi,&Yang, Yuyi.(2019).Bacterial community rather than metals shaping metal resistance genes in water, sediment and biofilm in lakes from arid northwestern China.ENVIRONMENTAL POLLUTION,254.
MLA	Song, Wenjuan,et al."Bacterial community rather than metals shaping metal resistance genes in water, sediment and biofilm in lakes from arid northwestern China".ENVIRONMENTAL POLLUTION 254(2019).