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Related Concept Videos

Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
Evolution of Microbial Genome01:08

Evolution of Microbial Genome

Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
Genomic DNA in Prokaryotes00:46

Genomic DNA in Prokaryotes

The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomics02:02

Genomics

Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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,...

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Related Experiment Video

Updated: May 18, 2026

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
08:03

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

Insights from genomics into bacterial pathogen populations.

Daniel J Wilson1

  • 1Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom.

Plos Pathogens
|September 13, 2012
PubMed
Summary

Population genomics offers new hope against drug-resistant bacterial pathogens by revealing evolution and transmission patterns. This technology enables real-time genomic surveillance for public health emergencies.

Area of Science:

  • Microbiology
  • Genomics
  • Epidemiology

Background:

  • Bacterial pathogens cause significant global disease burdens, with tuberculosis alone causing 1.5 million deaths annually.
  • Increasing antimicrobial resistance threatens effective treatment options for bacterial infections.
  • Highly virulent respiratory, enteric, and HIV-associated pathogens represent major public health challenges.

Purpose of the Study:

  • To review the transformative impact of population genomics on the field of bacteriology.
  • To explore how whole genome sequencing advances our understanding of bacterial evolution and disease.
  • To discuss the potential of genomics in identifying novel interventions and therapeutic targets.

Main Methods:

  • Population-level whole genome sequencing of bacteria.

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Generating Whole Bacterial Genomes from Clinical Samples using a Target Enrichment Workflow
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Generating Whole Bacterial Genomes from Clinical Samples using a Target Enrichment Workflow

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Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
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Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing

Published on: December 23, 2022

Related Experiment Videos

Last Updated: May 18, 2026

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
08:03

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

Generating Whole Bacterial Genomes from Clinical Samples using a Target Enrichment Workflow
10:44

Generating Whole Bacterial Genomes from Clinical Samples using a Target Enrichment Workflow

Published on: August 15, 2025

Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
09:44

Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing

Published on: December 23, 2022

  • Analysis of bacterial evolution within hosts.
  • Investigation of bacterial transmission history and population structure.
  • Application of rapid, real-time genomics for public health surveillance.

    • Main Results:

    • Population genomics provides high-resolution insights into bacterial evolution and disease etiology.
    • Whole genome sequencing aids in understanding within-host evolution, transmission dynamics, and population structure.
    • Rapid sequencing technologies enable timely responses to public health threats.

    Conclusions:

    • Population genomics is revolutionizing bacteriology, offering powerful tools to combat bacterial pathogens.
    • Genomic approaches facilitate the development of novel interventions and therapeutic strategies.
    • Real-time genomic surveillance is crucial for managing public health emergencies caused by bacteria.