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Biological Methods for Microbial Control01:28

Biological Methods for Microbial Control

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Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
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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...
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Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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Global copper response of the soil bacterial predator Myxococcus xanthus and its contribution to antibiotic cross-resistance.

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Related Experiment Video

Updated: Dec 6, 2025

Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy
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The antibiotic crisis: How bacterial predators can help.

Juana Pérez1, Francisco Javier Contreras-Moreno1, Francisco Javier Marcos-Torres2

  • 1Departamento de Microbiología, Facultad de Ciencias, Avda. Fuentenueva s/n, Universidad de Granada, 18071 Granada, Spain.

Computational and Structural Biotechnology Journal
|October 9, 2020
PubMed
Summary

Bacterial predators offer novel solutions to combat antibiotic resistance. Studying predator-prey interactions can reveal new antimicrobial agents and targets to fight drug-resistant superbugs.

Keywords:
AR, antibiotic resistanceARB, antibiotic-resistant bacteriaARG, antibiotic-resistant geneAntibiotic crisisBALOsBALOs, Bdellovibrio and like organismsBGC, biosynthetic gene clusterBacterial predatorsHGT, horizontal gene transferMDRB, multi-drug resistant bacteriaMyxobacteriaNRPS, nonribosomal peptide synthetaseOMV, outer membrane vesicleOSMAC, one strain many compoundsPKS, polyketide synthaseSM, secondary metaboliteWHO, World Health Organization

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Live-Cell Imaging of the Life Cycle of Bacterial Predator Bdellovibrio bacteriovorus using Time-Lapse Fluorescence Microscopy
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Area of Science:

  • Microbiology
  • Public Health
  • Drug Discovery

Background:

  • The widespread use of antibiotics has led to a global health crisis of antibiotic-resistant pathogens.
  • There is an urgent need for novel strategies to combat drug-resistant bacteria, or superbugs.

Purpose of the Study:

  • To review the potential of bacterial predator-prey interactions as a source of new antimicrobial solutions.
  • To explore how studying these interactions can address the challenge of antibiotic resistance.

Main Methods:

  • Review of existing literature on bacterial predators and their prey.
  • Analysis of mechanisms of antibiotic resistance and potential drug targets.
  • Exploration of therapeutic applications of bacterial predators.

Main Results:

  • Bacterial predators can be utilized as whole-cell therapeutic agents.
  • Predator-prey studies can uncover silent metabolic pathways for new antimicrobial discovery.
  • Research into prey resistance mechanisms provides novel targets for antimicrobial development.

Conclusions:

  • Predator-prey interactions represent a promising avenue for developing alternative solutions to antibiotic resistance.
  • Further research into these interactions is crucial for public health and combating superbugs.