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The truth about antibiotics.

Grace Yim1, Helena Huimi Wang, Julian Davies

  • 1Department of Microbiology and Immunology, Life Sciences Institute, 2350 Health Sciences Mall Vancouver, BC, V6T 1Z3 Canada.

International Journal of Medical Microbiology : IJMM
|March 1, 2006
PubMed
Summary
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Microbial organic compounds, even at low environmental concentrations, significantly modulate metabolic functions in natural microbial communities. This chemical signaling influences diverse transcription regulatory networks and inter-domain interactions.

Area of Science:

  • Microbial Ecology
  • Biochemistry
  • Chemical Biology

Background:

  • Microbes synthesize millions of diverse low-molecular-weight organic compounds.
  • These compounds exist in complex chemical and biological ecological contexts.
  • Their roles in natural microbial communities are not fully understood.

Purpose of the Study:

  • To propose that low-concentration microbial organic compounds modulate metabolic function in natural microbial communities.
  • To explore the mechanisms and scope of microbial chemical signaling.
  • To investigate potential interactions between prokaryotes and eukaryotes mediated by these compounds.

Main Methods:

  • Analysis of microbial-produced organic compounds.
  • Investigation of effects on natural microbial community metabolism.

Related Experiment Videos

  • Examination of impacts on transcription regulatory networks.
  • Assessment of prokaryote-eukaryote interaction mechanisms.

    • Main Results:

    • A vast diversity of microbial organic compounds exists.
    • These compounds, at environmentally relevant low concentrations, modulate microbial metabolism.
    • Distinct compounds trigger specific responses via various mechanisms.
    • Chemical signaling is a fundamental process in microbial interactions.

    Conclusions:

    • Microbial low-molecular-weight organic compounds are key regulators of natural microbial communities.
    • These compounds mediate complex chemical signaling pathways.
    • Microbial signaling extends to interactions with eukaryotes, influencing ecological dynamics.