Arsenic and antimony co-contamination influences on soil microbial community composition and functions: Relevance to arsenic resistance and carbon, nitrogen, and sulfur cycling

被引：159

作者：

Li, Yongbin ^{[1
]}

Zhang, Miaomiao ^{[1
]}

Xu, Rui ^{[1
]}

Lin, Hanzhi ^{[1
]}

Sun, Xiaoxu ^{[1
]}

Xu, Fuqing ^{[1
]}

Gao, Pin ^{[1
,2
]}

Kong, Tianle ^{[1
]}

Xiao, Enzong ^{[3
,4
]}

Yang, Nie ^{[1
]}

Sun, Weimin ^{[1
]}

机构：

[1] Guangdong Acad Sci, Inst Ecoenvironm & Soil Sci, Natl Reg Joint Engn Res Ctr Soil Pollut Control &, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China

[2] Donghua Univ, Coll Environm Sci & Engn, Text Pollut Controlling Engn Ctr, Minist Environm Protect, Shanghai 201620, Peoples R China

[3] Guangzhou Univ, Minist Educ, Innovat Ctr, Guangzhou 510006, Peoples R China

[4] Guangzhou Univ, Minist Educ, Key Lab Waters Safety & Protect Pearl River Delta, Guangzhou 510006, Peoples R China

来源：

ENVIRONMENT INTERNATIONAL | 2021年 / 153卷

关键词：

Metabolic potentials; Realgar ore; Co-occurrence network; Mining pollution; Random forest; DIVERSITY; OXIDATION; BACTERIA; WATER; BIOTRANSFORMATION; METABOLISM; REDUCTION; TAILINGS; REALGAR; GENES;

D O I：

10.1016/j.envint.2021.106522

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Microorganisms can mediate arsenic (As) and antimony (Sb) transformation and thus change the As and Sb toxicity and mobility. The influence of As and Sb on the innate microbiome has been extensively characterized. However, how microbial metabolic potentials are influenced by the As and Sb co-contamination is still ambiguous. In this study, we selected two contrasting sites located in the Shimen realgar mine, the largest realgar mine in Asia, to explore the adaptability and response of the soil microbiome to As and Sb co-contamination and the impact of co-contamination on microbial metabolic potentials. It is observed that the geochemical parameters, including the As and Sb fractions, were the driving forces that reshaped the community composition and metabolic potentials. Bacteria associated with Bradyrhizobium, Nocardioides, Sphingomonas, Burkholderia, and Streptomyces were predicted to be tolerant to high concentrations of As and Sb. Co-occurrence network analysis revealed that the genes related to C fixation, nitrate/nitrite reduction, N fixation, and sulfate reduction were positively correlated with the As and Sb fractions, suggesting that As and Sb biogeochemical cycling may interact with and benefit from C, N, and S cycling. The results suggest that As and Sb co-contamination not only influences As-related genes, but also influences other genes correlated with microbial C, N, and S cycling.

引用

页数：11

共 68 条

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