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Related Experiment Videos

Unlocking the 'microbial black box' using RNA-based stable isotope probing technologies.

Andrew S Whiteley1, Mike Manefield, Tillmann Lueders

  • 1Biodiversity & Ecosystem Function Group, CEH-Oxford, Mansfield Road, Oxford, UK. aswhi@ceh.ac.uk

Current Opinion in Biotechnology
|December 13, 2005
PubMed
Summary

Stable isotope probing (SIP) links environmental compound transformation to microbes. RNA-based SIP advances functional phylogeny, identifying microbes responsible for contaminant degradation and understanding carbon flow.

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Area of Science:

  • Microbial Ecology
  • Environmental Microbiology
  • Molecular Ecology

Background:

  • Microbial ecologists aim to link environmental compound transformation to specific microbial groups.
  • Stable Isotope Probing (SIP) enables associating microbial activity with specific compounds.
  • Culture-independent methods are crucial for studying unculturable microorganisms in situ.

Purpose of the Study:

  • To highlight the advancements and applications of RNA-based Stable Isotope Probing (SIP).
  • To demonstrate the capability of RNA-SIP for functional phylogeny.
  • To showcase the identification of microorganisms involved in environmental processes.

Main Methods:

  • Utilizing stable isotope probing (SIP) with (13)C-labeled compounds.
  • Analyzing small subunit ribosomal RNA (SSU rRNA) to identify active microbial taxa.

Related Experiment Videos

  • Applying RNA-based SIP for culture-independent functional phylogenetic analyses.

    • Main Results:

    • RNA-based SIP allows direct association of substrate consumption with microbial identity.
    • Successfully identified microorganisms responsible for contaminant degradation in engineered systems.
    • Provided insights into microbial roles in carbon flow within terrestrial ecosystems.

    Conclusions:

    • RNA-based SIP is a powerful tool for functional phylogeny in microbial ecology.
    • This technique unequivocally identifies active microorganisms in complex environments.
    • RNA-SIP significantly enhances our understanding of biogeochemical cycles and microbial functions.