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Related Experiment Video

Updated: Jun 16, 2025

Microbial Communities in Nature and Laboratory - Interview
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Nature should be the model for microbial sciences.

Brett J Baker1,2, Emily Hyde2, Pedro Leão1,3

  • 1Department of Marine Science, University of Texas at Austin, Marine Science Institute, Port Aransas, Texas, USA.

Journal of Bacteriology
|August 19, 2024
PubMed
Summary
This summary is machine-generated.

Microbiologists should expand model organisms beyond traditional cultures to include abundant environmental microbes like Nitrosophaerota and SAR11. Studying these cosmopolitan taxa in situ is crucial for understanding microbial ecology and evolution, especially with climate change.

Keywords:
ArchaeaAsgardarchaeotaBathyarchaeiaHadesarchaeiaHeimdallarchaeiaNitrosopumilusPelagibacterSAR11Thaumarchaeota

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Area of Science:

  • Microbiology
  • Microbial Ecology
  • Evolutionary Biology

Background:

  • Historically, microbiology research focused on culturable model organisms, overlooking abundant environmental microbes.
  • Metagenomic studies reveal that cosmopolitan taxa, often numerically dominant, are key players in natural processes.
  • Traditional models may not represent the true diversity or ecological significance of microbial life.

Purpose of the Study:

  • To advocate for the inclusion of numerically dominant and ecologically significant environmental microbes as future model systems.
  • To highlight the importance of studying microbes in their natural habitats using in situ techniques.
  • To emphasize the need to integrate laboratory findings with natural microbial processes.

Main Methods:

  • Review of existing diversity surveys and metagenomic sequencing data.
  • Analysis of the ecological roles and abundance of various microbial taxa.
  • Discussion of advancements in in situ techniques for studying uncultured microbes.

Main Results:

  • Cosmopolitan microbial taxa, such as Nitrosophaerota (Nitrosopumilus maritimus) and SAR11 (Pelagibacter ubique), exist in vast populations (10^28 cells).
  • These dominant groups are involved in critical environmental processes.
  • Symbiotic bacteria (e.g., Buchnera, Aliivibrio) and Asgard Archaea (e.g., Heimdallarchaeia) offer unique insights into host-associations and major evolutionary transitions.

Conclusions:

  • Model systems should encompass abundant environmental microbes and those crucial for understanding evolution and ecology.
  • In situ techniques are vital for studying microbial genetics and physiology in natural settings.
  • Future microbiology research must prioritize understanding microbes in their natural environments to grasp their full impact.