Potential applications of next generation DNA sequencing of 16S rRNA gene amplicons in microbial water quality monitoring

J. Vierheilig, D. Savio, A. H. Farnleitner, G. H. Reischer*, R. E. Ley, R. L. Mach

*Corresponding author for this work

Research output: Journal article (peer-reviewed)Journal article

48 Citations (Scopus)

Abstract

The applicability of next generation DNA sequencing (NGS) methods for water quality assessment has so far not been broadly investigated. This study set out to evaluate the potential of an NGS-based approach in a complex catchment with importance for drinking water abstraction. In this multicompartment investigation, total bacterial communities in water, faeces, soil, and sediment samples were investigated by 454 pyrosequencing of bacterial 16S rRNA gene amplicons to assess the capabilities of this NGS method for (i) the development and evaluation of environmental molecular diagnostics, (ii) direct screening of the bulk bacterial communities, and (iii) the detection of faecal pollution in water. Results indicate that NGS methods can highlight potential target populations for diagnostics and will prove useful for the evaluation of existing and the development of novel DNA-based detection methods in the field of water microbiology. The used approach allowed unveiling of dominant bacterial populations but failed to detect populations with low abundances such as faecal indicators in surface waters. In combination with metadata, NGS data will also allow the identification of drivers of bacterial community composition during water treatment and distribution, highlighting the power of this approach for monitoring of bacterial regrowth and contamination in technical systems.

Original languageEnglish
Pages (from-to)1962-1972
Number of pages11
JournalWater Science and Technology
Volume72
Issue number11
DOIs
Publication statusPublished - Dec 2015

Keywords

  • DNA extraction
  • Faecal pollution
  • Microbial source tracking
  • Molecular diagnostics
  • Next generation sequencing
  • Water quality assessment

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

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