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mSphere of Influence: Rethinking microbial identity through variability.

Laura Veschetti1,2

  • 1Infections and Cystic Fibrosis Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milano, Italy.

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Summary
This summary is machine-generated.

Microbial identity is redefined by viewing variability as a core feature, not an exception. This perspective shift, informed by within-host evolution and long-term experiments, influences the study of bacterial adaptation.

Keywords:
microbial evolutionmicrobial variabilitypopulation genomics

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Area of Science:

  • Microbial genomics
  • Evolutionary biology
  • Bacterial adaptation

Background:

  • The concept of microbial identity has traditionally focused on static reference genomes.
  • Understanding microbial evolution requires considering within-host dynamics and long-term experimental evolution.

Purpose of the Study:

  • To reflect on how specific research reshaped the understanding of microbial identity.
  • To discuss the influence of evolutionary processes on studying bacterial adaptation.

Main Methods:

  • Drawing on concepts from population genomics and pangenomics.
  • Integrating insights from regulatory heterogeneity studies.
  • Considering within-host evolution of *Pseudomonas aeruginosa*.
  • Leveraging long-term evolution experiments.

Main Results:

  • Microbial variability is reframed as a defining biological feature, not an exception.
  • Focusing on evolutionary processes offers a more dynamic approach to studying bacteria than relying on static genomes.

Conclusions:

  • A shift towards evolutionary processes enhances the study of microbial adaptation.
  • Understanding microbial identity requires embracing inherent variability.