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

DNA Bacteriophages01:26

DNA Bacteriophages

77
Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
77
Lytic Cycle of Bacteriophages01:30

Lytic Cycle of Bacteriophages

71.4K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
71.4K
Lysogenic Cycle of Bacteriophages00:43

Lysogenic Cycle of Bacteriophages

62.8K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
62.8K
Viral Replication: Lytic Cycle01:20

Viral Replication: Lytic Cycle

113
Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
113
CRISPR and crRNAs02:53

CRISPR and crRNAs

17.1K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
17.1K
Viral Replication: Lysogenic Cycle01:16

Viral Replication: Lysogenic Cycle

106
The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
106

You might also read

Related Articles

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

Sort by
Same author

Genome Characterization of Temperate Bacteriophages and Associated Genetic Features in Avian Pathogenic <i>Escherichia coli</i> from Brazilian Poultry.

Animals : an open access journal from MDPI·2026
Same author

Bacteriophage-mediated reduction of Pseudomonas aeruginosa biofilm on titanium surfaces for biomedical applications.

European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology·2026
Same author

Why does the world continue to struggle with effectively addressing hepatitis E?

EXCLI journal·2026
Same author

More than half of senior intensivists have a poor sleep quality: a multicentre survey in France.

Sleep medicine·2026
Same author

Chikungunya virus-induced persistent allodynia is accompanied by joint microenvironmental changes and involves cartilage degradation and TRPA1 activation.

British journal of pharmacology·2026
Same author

A One-Year Wastewater-Based Surveillance Study of the Main Human Respiratory Viruses in a Middle-Size Spanish City During the COVID-19 Pandemic Period.

Microorganisms·2026

Related Experiment Video

Updated: Aug 8, 2025

Author Spotlight: Efficiently Eliminating Bacteriophages from Infected Salmonella Cultures Using Lipopolysaccharides
07:19

Author Spotlight: Efficiently Eliminating Bacteriophages from Infected Salmonella Cultures Using Lipopolysaccharides

Published on: June 28, 2024

1.0K

Bacteriophages as Biotechnological Tools.

Mariana Alves Elois1, Raphael da Silva1, Giulia Von Tönnemann Pilati1

  • 1Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil.

Viruses
|February 28, 2023
PubMed
Summary
This summary is machine-generated.

Bacteriophages, viruses that infect bacteria, offer promising biocontrol solutions. Obligately lytic phages are valuable allies in controlling pathogens and reducing biofilms in industrial and healthcare settings.

Keywords:
applicationsbacteriophagesbiotechnological

More Related Videos

Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings
07:22

Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings

Published on: August 19, 2021

3.0K
Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi
09:01

Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi

Published on: September 28, 2022

2.1K

Related Experiment Videos

Last Updated: Aug 8, 2025

Author Spotlight: Efficiently Eliminating Bacteriophages from Infected Salmonella Cultures Using Lipopolysaccharides
07:19

Author Spotlight: Efficiently Eliminating Bacteriophages from Infected Salmonella Cultures Using Lipopolysaccharides

Published on: June 28, 2024

1.0K
Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings
07:22

Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings

Published on: August 19, 2021

3.0K
Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi
09:01

Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi

Published on: September 28, 2022

2.1K

Area of Science:

  • Microbiology
  • Virology
  • Biotechnology

Background:

  • Bacteriophages are the most abundant entities on Earth, significantly outnumbering bacteria.
  • Phages are classified as temperate (integrating into host genome) or lytic (destroying host cell).
  • Lysogenic phages can spread antibiotic resistance genes via horizontal gene transfer.

Purpose of the Study:

  • To review the applications of bacteriophages for pathogen biocontrol.
  • To highlight the potential of phage therapy in industrial and healthcare settings.
  • To discuss the advantages of bacteriophages over conventional antimicrobial techniques.

Main Methods:

  • Literature review of bacteriophage applications.
  • Analysis of phage characteristics (lytic vs. temperate).
  • Evaluation of phage efficacy in biocontrol and biofilm reduction.

Main Results:

  • Obligately lytic bacteriophages demonstrate significant potential for bacterial control.
  • Bacteriophages possess biofilm-reducing capabilities.
  • Phage therapy presents a viable and promising alternative for managing microbial infections and biofilms.

Conclusions:

  • Bacteriophages are versatile tools for biocontrol in various settings.
  • Their specificity and biofilm-reducing capacity make them attractive for industrial and healthcare applications.
  • Further research and application of phage therapy are warranted.