Microbial community profiles in soils adjacent to mining and smelting areas: Contrasting potentially toxic metals and co-occurrence patterns - Archive ouverte HAL Access content directly
Journal Articles Chemosphere Year : 2021

Microbial community profiles in soils adjacent to mining and smelting areas: Contrasting potentially toxic metals and co-occurrence patterns

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Bang Liu
  • Function : Author
Bo Ma
  • Function : Author
Zhihui Chen
  • Function : Author
Chenchen Zhao
  • Function : Author
Xiaozhe Zhu
  • Function : Author
Miaomiao Li
  • Function : Author
Ying Cao
  • Function : Author
Wancheng Pang
  • Function : Author
Hao Li
  • Function : Author
  • PersonId : 763133
  • IdRef : 166404659
Lingyun Feng
  • Function : Author
Victor Mihucz

Abstract

Mining and smelting activities have introduced severe potentially toxic metals (PTMs) contamination into surrounding soil settings. Influences of PTMs on microbial diversity have been widely studied. However, variations of microbial communities, network structures and community functions in different levels of PTMs contaminated soils adjacent to mining and smelting aera are still poorly investigated. In this study, microbial communities of soils around different levels of PTMs contamination were comprehensively studied by 16S rRNA gene amplicons high-throughput sequencing. Microbial interactions and module functions were also exploited to ascertain the discrepancies of PTMs concentration levels on microbial ecological functions. Results indicated that the microbial community composition was significantly distinct attributed to the phylum Protebacteria (p = 0.002) dominating in soil with high level PTMs contents but Actinobacteria (p = 0.002) in low level of PTMs-contaminated soil. Microbial α diversity was not significantly influenced by different levels of PTMs contaminations. Microorganisms proactively responded to PTMs content levels by means of strengthening network complexities and modularities among microbe-microbe interactions. The functions of main network modules were predicted associating membrane transport, amino acid metabolism, energy metabolism and carbohydrate metabolism. The PTMs detoxification and anti-oxidation were significantly strengthened at the high level of PTMs contamination. The present study demonstrated that modification of microbial community by the adaptive adjustment of microbial compositions and strengthening their network complexity and modularity.
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Dates and versions

hal-03263052 , version 1 (16-06-2021)

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Bang Liu, Jun Yao, Bo Ma, Zhihui Chen, Chenchen Zhao, et al.. Microbial community profiles in soils adjacent to mining and smelting areas: Contrasting potentially toxic metals and co-occurrence patterns. Chemosphere, 2021, 282, pp.130992. ⟨10.1016/j.chemosphere.2021.130992⟩. ⟨hal-03263052⟩
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