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Related Concept Videos

Bacterial Signaling01:30

Bacterial Signaling

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...
Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

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,...
Microbial Interactions: Mutualism01:25

Microbial Interactions: Mutualism

Mutualism is a symbiotic interaction in which all participating organisms benefit. These relationships can be obligate or facultative and are fundamental to ecosystem functions across diverse biological systems.Plant–Fungi MutualismOne well-known example is the association between plant roots and mycorrhizal fungi, such as Rhizophagus species. The fungal hyphae penetrate the root hairs and the epidermis, forming an extensive hyphal network that establishes a symbiotic association. Through this...
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Microbial Interactions: Cooperation

Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...
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iChip

The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...
Microbial Biosensors01:17

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Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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Related Experiment Video

Updated: May 7, 2026

Assembly and Tracking of Microbial Community Development within a Microwell Array Platform
09:24

Assembly and Tracking of Microbial Community Development within a Microwell Array Platform

Published on: June 6, 2017

Microbial communication superhighways.

Jeffrey W Schertzer1, Marvin Whiteley

  • 1Section of Molecular Genetics and Microbiology, Institute of Cell and Molecular Biology, The University of Texas at Austin, 78712, USA.

Cell
|February 22, 2011
PubMed
Summary
This summary is machine-generated.

Bacteria can directly share cytoplasmic factors like proteins and DNA through nanotube conduits. This discovery reveals a novel, widespread bacterial communication mechanism.

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Area of Science:

  • Microbiology
  • Cell Biology
  • Bacterial Communication

Background:

  • Bacterial social behaviors rely on information exchange.
  • Previous understanding of bacterial communication was limited.

Discussion:

  • Dubey and Ben-Yehuda (2011) present evidence for bacterial nanotubes.
  • These structures facilitate direct transfer of cytoplasmic factors between bacterial cells.
  • This transfer includes proteins and DNA, even between distantly related species.

Key Insights:

  • Discovery of bacterial nanotubes as conduits for direct cytoplasmic exchange.
  • Demonstration of interspecies transfer of proteins and DNA.
  • Identification of a potentially widespread mechanism for bacterial communication.

Outlook:

  • This finding opens new avenues for understanding bacterial interactions.
  • Potential implications for microbial evolution and horizontal gene transfer.
  • Further research is needed to explore the prevalence and function of these nanotubes.