Microbial Community Shifts in Response to Acid Mine Drainage Pollution Within a Natural Wetland Ecosystem

Frontiers in Microbiology
Oscar E AguinagaJon K Pittman

Abstract

Natural wetlands are known to play an important role in pollutant remediation, such as remediating acid mine drainage (AMD) from abandoned mine sites. However, many aspects of the microbiological mechanisms underlying AMD remediation within wetlands are poorly understood, including the role and composition of associated microbial communities. We have utilized an AMD-polluted river-wetland system to perform rRNA sequence analysis of microbial communities that play a role in biogeochemical activities that are linked to water quality improvement. Next-generation sequencing of bacterial 16S rRNA gene amplicons from river and wetland sediment samples identified variation in bacterial community structure and diversity on the basis of dissolved and particulate metal concentrations, sediment metal concentrations and other water chemistry parameters (pH and conductivity), and wetland plant presence. Metabolic reconstruction analysis allowed prediction of relative abundance of microbial metabolic pathways and revealed differences between samples that cluster on the basis of the severity of AMD pollution. Global metabolic activity was predicted to be significantly higher in unpolluted and wetland sediments in contrast to polluted river se...Continue Reading

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Citations

Mar 2, 2021·Frontiers in Bioengineering and Biotechnology·Sandhya MishraShaohua Chen
Jul 8, 2021·Canadian Journal of Microbiology·Macarena Mellado, Jeannette Vera
Nov 26, 2021·The Science of the Total Environment·Jinmei DengEnzong Xiao
Dec 18, 2021·Frontiers in Microbiology·Ye HuangCheng-Ying Jiang

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Datasets Mentioned

BETA
ERS1983433
ERS1983434
ERS1983435
ERS1983436
ERS1983438
ERS1983439
ERS1983440
ERS1983441
ERS1983442
ERS1983443

Methods Mentioned

BETA
Amplicon Sequencing
PCR
PCA

Software Mentioned

BIO
QIIME
Tax4Fun
ANOSIM
R
UCHIME
R vegan package
PICRUSt
SIMPROF
GraphPad Prism

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