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Related Concept Videos

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Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
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Prokaryotes are small unicellular organisms that include the domains — Archaea and Bacteria. Bacteria include many common microorganisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
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Prokaryotes are small unicellular organisms that include the domains—Archaea and Bacteria. Bacteria include many common organisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
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Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
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Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

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Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
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The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
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Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
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Bacterial Behavior in Confined Spaces.

Hang Du1,2, Weili Xu1, Zhizhou Zhang2

  • 1State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China.

Frontiers in Cell and Developmental Biology
|April 5, 2021
PubMed
Summary
This summary is machine-generated.

Bacteria in confined spaces show surprising behaviors impacting the biogeochemical cycle and human health. This review covers their growth, communication, and motion in various microenvironments.

Keywords:
bacterial behaviorcommunicationconfined spacegrowth and proliferationmotion

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Area of Science:

  • Microbiology
  • Biogeochemistry
  • Cell Biology

Background:

  • Bacteria inhabit diverse environments, including specialized confined spaces.
  • Understanding bacterial behavior in confinement is crucial for biogeochemical cycling and human health.
  • Confined spaces range from natural vesicles to artificial microfluidic devices.

Purpose of the Study:

  • To review and summarize the distinct cellular behaviors of bacteria within confined spaces.
  • To highlight the implications of these behaviors for microbial ecology and health.
  • To identify future research directions and challenges in studying bacteria in confinement.

Main Methods:

  • Literature review of studies on bacterial behavior in confined environments.
  • Categorization of confined spaces (e.g., vesicles, droplets, microfluidic chips).
  • Analysis of reported bacterial responses: growth, communication, and motility.

Main Results:

  • Bacteria exhibit altered growth, proliferation, and metabolic activity in confined spaces.
  • Cell-to-cell communication (quorum sensing) is modified by spatial constraints.
  • Bacterial motility patterns are significantly influenced by the geometry and properties of confined environments.

Conclusions:

  • Confined environments fundamentally alter bacterial physiology and behavior.
  • These alterations have significant implications for microbial community dynamics and ecosystem functions.
  • Further research is needed to fully elucidate the mechanisms and applications of bacteria in confined spaces.