Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

1.4K
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.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
Transduction01:16

Transduction

40
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
40
The Evidence for Evolution02:55

The Evidence for Evolution

42.9K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
42.9K
Eukaryotic Evolution01:24

Eukaryotic Evolution

35.0K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
35.0K
Coordination of Gene Expression Processes in Bacteria01:29

Coordination of Gene Expression Processes in Bacteria

40
The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
40
Bacterial Growth Curve01:28

Bacterial Growth Curve

87
The bacterial growth curve is a fundamental concept in microbiology that describes the dynamics of bacterial population growth in a closed system with controlled environmental conditions, such as temperature and nutrient availability. This curve is divided into four distinct phases: lag, log (exponential), stationary, and death phases, each reflecting a unique stage of bacterial adaptation and growth. During the lag phase, bacteria acclimate to their surroundings by synthesizing essential...
87

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Repetitive DNA is Functional and Encodes Parts of the Non-Coding RNA Repertoire.

Advanced genetics (Hoboken, N.J.)·2023
Same author

How Chaotic Is Genome Chaos?

Cancers·2021
Same author

Living Organisms Author Their Read-Write Genomes in Evolution.

Biology·2017
Same author

Biological action in Read-Write genome evolution.

Interface focus·2017
Same journal

Who are you, ketamine? Good, evil, or dose- and context-dependent?

The Journal of physiology·2026
Same journal

Nuances in explaining the blunted erythropoietic response at altitude following recombinant human erythropoietin treatment at sea level.

The Journal of physiology·2026
Same journal

Sex-dependent responses to glucagon agonist therapies in obesity: Mechanistic insights and broader pharmacological implications.

The Journal of physiology·2026
Same journal

Brain sparing in fetal growth restriction: The double-edged sword of fetal hypoxaemia.

The Journal of physiology·2026
Same journal

Protein kinase Cδ and pharmacomechanical coupling: Re-envisioning cerebral vascular control.

The Journal of physiology·2026
Same journal

Improved subjective sleep quality in older adults by enhancing the GABAergic system in the sensorimotor cortex.

The Journal of physiology·2026
See all related articles

Related Experiment Video

Updated: Jul 17, 2025

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

3.4K

A very brief note on why bacterial evolution has physiology.

James A Shapiro1

  • 1Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois, USA.

The Journal of Physiology
|August 29, 2023
PubMed
Summary
This summary is machine-generated.

Bacteria use quorum-sensing signals to regulate both surface biofilm growth and DNA transfer. This shared control mechanism highlights how bacterial physiology drives evolution.

Keywords:
biofilmscompetenceconjugal DNA transferquorum sensingtransductiontransformationtype IV secretion system

More Related Videos

Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance
09:00

Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance

Published on: May 2, 2018

11.8K
Monitoring Intraspecies Competition in a Bacterial Cell Population by Cocultivation of Fluorescently Labelled Strains
06:45

Monitoring Intraspecies Competition in a Bacterial Cell Population by Cocultivation of Fluorescently Labelled Strains

Published on: January 18, 2014

8.6K

Related Experiment Videos

Last Updated: Jul 17, 2025

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

3.4K
Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance
09:00

Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance

Published on: May 2, 2018

11.8K
Monitoring Intraspecies Competition in a Bacterial Cell Population by Cocultivation of Fluorescently Labelled Strains
06:45

Monitoring Intraspecies Competition in a Bacterial Cell Population by Cocultivation of Fluorescently Labelled Strains

Published on: January 18, 2014

8.6K

Area of Science:

  • Microbiology
  • Evolutionary Biology
  • Bacterial Physiology

Background:

  • Most bacteria inhabit surface biofilms, complex microbial communities.
  • Bacterial growth, adaptation, and genetic exchange are influenced by environmental cues.
  • Quorum sensing is a cell-to-cell communication system crucial for bacterial behavior.

Purpose of the Study:

  • To investigate the regulatory role of quorum sensing in bacterial surface growth.
  • To explore the connection between quorum sensing and horizontal DNA transfer.
  • To understand how shared physiological regulation impacts bacterial evolution.

Main Methods:

  • Review of existing literature on bacterial biofilms and quorum sensing.
  • Analysis of regulatory pathways controlling biofilm formation.
  • Examination of mechanisms governing horizontal gene transfer.

Main Results:

  • Quorum sensing significantly regulates bacterial growth and development within biofilms.
  • Horizontal DNA transfer processes are also modulated by quorum-sensing signals.
  • A common regulatory network links biofilm lifestyle and genetic exchange.

Conclusions:

  • Bacterial physiology, particularly quorum sensing, plays a pivotal role in coordinating biofilm formation and DNA transfer.
  • This integrated regulation facilitates adaptation and evolution in bacterial populations.
  • Understanding these mechanisms provides insights into bacterial community dynamics and evolutionary trajectories.