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An integrated insight into the response of sedimentary microbial communities to heavy metal contamination

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep14266· OSTI ID:1624797
 [1];  [2];  [3];  [2];  [4];  [5];  [2];  [2];  [6];  [6]; ;  [7];  [2];  [2]
  1. Central South University, Changsha (China). School of Minerals Processing and Bioengineering; Ministry of Education, Changsha (China). Key laboratory of Biometallurgy; DOE/OSTI
  2. Central South University, Changsha (China). School of Minerals Processing and Bioengineering; Ministry of Education, Changsha (China). Key laboratory of Biometallurgy
  3. Hunan Agricultural University, Changsha (China). College of Food Science and Technology
  4. Ministry of Agriculture, Beijing (China). Key Laboratory of Microbial Resources Collection and Preservation; Chinese Academy of Agricultural Sciences, Beijing (China). Institute of Agricultural Resources and Regional Planning
  5. Key Laboratory of Plant Nutrition and Fertilizer, Beijing (China); Chinese Academy of Agricultural Sciences, Beijing (China). Institute of Agricultural Resources and Regional Planning
  6. University of Oklahoma, Norman (United States). Institute for Environmental Genomics and Department of Botany and Microbiology
  7. Tsinghua University, Beijing (China). School of Environment; University of Oklahoma, Norman (United States). Institute for Environmental Genomics and Department of Botany and Microbiology; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
Response of biological communities to environmental stresses is a critical issue in ecology, but how microbial communities shift across heavy metal gradients remain unclear. To explore the microbial response to heavy metal contamination (e.g., Cr, Mn, Zn), the composition, structure and functional potential of sedimentary microbial community were investigated by sequencing of 16S rRNA gene amplicons and a functional gene microarray. Analysis of 16S rRNA sequences revealed that the composition and structure of sedimentary microbial communities changed significantly across a gradient of heavy metal contamination and the relative abundances were higher for Firmicutes, Chloroflexi and Crenarchaeota, but lower for Proteobacteria and Actinobacteria in highly contaminated samples. Also, molecular ecological network analysis of sequencing data indicated that their possible interactions might be enhanced in highly contaminated communities. Correspondently, key functional genes involved in metal homeostasis (e.g., chrR, metC, merB), carbon metabolism and organic remediation showed a higher abundance in highly contaminated samples, indicating that bacterial communities in contaminated areas may modulate their energy consumption and organic remediation ability. This study indicated that the sedimentary indigenous microbial community may shift the composition and structure as well as function priority and interaction network to increase their adaptability and/or resistance to environmental contamination.
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1624797
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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The shift of microbial communities and their roles in sulfur and iron cycling in a copper ore bioleaching system journal October 2016
Prokaryotic Diversity in Mangrove Sediments across Southeastern China Fundamentally Differs from That in Other Biomes journal September 2019
Metagenome-scale analysis yields insights into the structure and function of microbial communities in a copper bioleaching heap journal January 2016
Comparison of microbial taxonomic and functional shift pattern along contamination gradient journal June 2016
An integrated insight into the response of bacterial communities to anthropogenic contaminants in a river: A case study of the Wonderfonteinspruit catchment area, South Africa journal May 2019
Gene Turnover Contributes to the Evolutionary Adaptation of Acidithiobacillus caldus: Insights from Comparative Genomics journal December 2016
Comparative Genomics Unravels the Functional Roles of Co-occurring Acidophilic Bacteria in Bioleaching Heaps journal May 2017
The Response of a 16S Ribosomal RNA Gene Fragment Amplified Community to Lead, Zinc, and Copper Pollution in a Shanghai Field Trial journal March 2018
A Short-Term Response of Soil Microbial Communities to Cadmium and Organic Substrate Amendment in Long-Term Contaminated Soil by Toxic Elements journal November 2018
Speciation Distribution of Heavy Metals in Uranium Mining Impacted Soils and Impact on Bacterial Community Revealed by High-Throughput Sequencing journal August 2019
Pollution Gradients Altered the Bacterial Community Composition and Stochastic Process of Rural Polluted Ponds journal February 2020
Fates of antibiotic resistance genes in a distributed swine wastewater treatment plant journal July 2019
The role of soil bacterial community during winter fallow period in the incidence of tobacco bacterial wilt disease journal January 2018
Effects of vermicomposting on the main chemical properties and bioavailability of Cd/Zn in pure sludge journal May 2019
Comparative assessment of autochthonous bacterial and fungal communities and microbial biomarkers of polluted agricultural soils of the Terra dei Fuochi journal September 2018
Bacterial Diversity in the Metal-Rich Terrestrial Deep Subsurface Sediments of Krishna Godavari Basin, India journal August 2019
Metal contaminations impact archaeal community composition, abundance and function in remote alpine lakes journal May 2018
The succession pattern of soil microbial communities and its relationship with tobacco bacterial wilt journal October 2016
Environmental factors shaping the diversity of bacterial communities that promote rice production journal June 2018
Do Organic Substrates Drive Microbial Community Interactions in Arctic Snow? journal October 2019

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