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Updated: May 28, 2026
13:28
Single-cell Analysis of Bacillus subtilis Biofilms Using Fluorescence Microscopy and Flow Cytometry
Published on: February 15, 2012
Extracellular signaling and multicellularity in Bacillus subtilis
Elizabeth Anne Shank1, Roberto Kolter
1Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, United States. elizabeth_shank@hms.harvard.edu
Current Opinion in Microbiology
|October 26, 2011
Summary
Bacillus subtilis uses extracellular signals to coordinate cell differentiation, impacting behaviors like cannibalism and swarming. Signal specificity and population heterogeneity are key to understanding its multicellularity.
Area of Science:
- Microbiology
- Cell Biology
- Biochemistry
Background:
- Bacillus subtilis exhibits complex multicellular behaviors.
- Cell differentiation is regulated by extracellular signaling molecules.
- Signal production and response vary within B. subtilis populations.
Purpose of the Study:
- To review how extracellular signals influence B. subtilis multicellularity.
- To discuss specific signaling compounds like ComX and CSF.
- To explore the role of imaging mass spectrometry in identifying signaling molecules.
Main Methods:
- Literature review of Bacillus subtilis signaling.
- Analysis of quorum-sensing peptide specificity (ComX, CSF).
- Discussion of imaging mass spectrometry applications.
Main Results:
- Extracellular signals regulate cannibal differentiation, germination, and swarming.
- Specificity and heterogeneity in signaling are observed.
- Imaging mass spectrometry can identify signaling compounds.
Conclusions:
- Extracellular signaling is crucial for B. subtilis multicellularity.
- Understanding signal specificity enhances knowledge of bacterial behavior.
- Advanced imaging techniques aid in elucidating signaling pathways.
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