Consistent responses of soil microbial taxonomic and functional attributes to mercury pollution across China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Consistent responses of soil microbial taxonomic and functional attributes to mercury pollution across China
	Liu, Yu-Rong; Delgado-Baquerizo, Manuel; Bi, Li; Zhu, Jun; He, Ji-Zheng
刊名	MICROBIOME
	2018-10-18
卷号	6 页码:-
关键词	Soil microbial community Co-occurrence network Functional gene Metagenomics Mercury pollution
ISSN号	2049-2618
文献子类	Article
英文摘要	BackgroundThe ecological consequences of mercury (Hg) pollutionone of the major pollutants worldwideon microbial taxonomic and functional attributes remain poorly understood and largely unexplored. Using soils from two typical Hg-impacted regions across China, here, we evaluated the role of Hg pollution in regulating bacterial abundance, diversity, and co-occurrence network. We also investigated the associations between Hg contents and the relative abundance of microbial functional genes by analyzing the soil metagenomes from a subset of those sites.ResultsWe found that soil Hg largely influenced the taxonomic and functional attributes of microbial communities in the two studied regions. In general, Hg pollution was negatively related to bacterial abundance, but positively related to the diversity of bacteria in two separate regions. We also found some consistent associations between soil Hg contents and the community composition of bacteria. For example, soil total Hg content was positively related to the relative abundance of Firmicutes and Bacteroidetes in both paddy and upland soils. In contrast, the methylmercury (MeHg) concentration was negatively correlated to the relative abundance of Nitrospirae in the two types of soils. Increases in soil Hg pollution correlated with drastic changes in the relative abundance of ecological clusters within the co-occurrence network of bacterial communities for the two regions. Using metagenomic data, we were also able to detect the effect of Hg pollution on multiple functional genes relevant to key soil processes such as element cycles and Hg transformations (e.g., methylation and reduction).ConclusionsTogether, our study provides solid evidence that Hg pollution has predictable and significant effects on multiple taxonomic and functional attributes including bacterial abundance, diversity, and the relative abundance of ecological clusters and functional genes. Our results suggest an increase in soil Hg pollution linked to human activities will lead to predictable shifts in the taxonomic and functional attributes in the Hg-impacted areas, with potential implications for sustainable management of agricultural ecosystems and elsewhere.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41214]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Liu, Yu-Rong,Delgado-Baquerizo, Manuel,Bi, Li,et al. Consistent responses of soil microbial taxonomic and functional attributes to mercury pollution across China[J]. MICROBIOME,2018,6:-.
APA	Liu, Yu-Rong,Delgado-Baquerizo, Manuel,Bi, Li,Zhu, Jun,&He, Ji-Zheng.(2018).Consistent responses of soil microbial taxonomic and functional attributes to mercury pollution across China.MICROBIOME,6,-.
MLA	Liu, Yu-Rong,et al."Consistent responses of soil microbial taxonomic and functional attributes to mercury pollution across China".MICROBIOME 6(2018):-.