生物地球化学循环
环境化学
微生物
土壤水分
微生物种群生物学
生物修复
环境科学
环境修复
微量金属
污染
细菌
化学
土壤科学
生态学
地质学
生物
金属
有机化学
古生物学
作者
Jingye She,Juan Liu,Hongping He,Qiong Zhang,Yimo Lin,Wang Jin,Meiling Yin,Lulu Wang,Xudong Wei,Yeliang Huang,Changzhi Chen,Wenping Lin,Nan Chen,Tangfu Xiao
标识
DOI:10.1016/j.jhazmat.2021.127080
摘要
Thallium (Tl) is a trace metal with high toxicity. Comprehensive investigation of spatial distribution of Tl and microorganism is still limited in soils from mining area. In this study, 16S rRNA sequencing and network analysis were used for deciphering the co-occurrence patterns of bacterial communities in two different types of soil profiles around a typical Tl-bearing pyrite mine. The results showed that geochemical parameters (such as pH, S, Tl, Fe and TOM) were the driving forces for shaping the vertical distribution of microbial community. According to network analysis, a wide diversity of microbial modules were present in both soil profiles and affected by depth, significantly associated with variations in Tl geochemical fractionation. Phylogenetic information further unveiled that the microbial modules were mainly dominated by Fe reducing bacteria (FeRB), Fe oxidizing bacteria (FeOB), S oxidizing bacteria and Mn reducing bacteria. The results of metagenome indicated that Fe, Mn and S cycle in soil are closely involved in the biogeochemical cycle of Tl. The findings of co-occurrence patterns in the bacterial network and correlation between microorganisms and different geochemical fractions of Tl may benefit the strategy of bioremediation of Tl-contaminated soils with indigenous microbes.
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