Related Experiment Video

Updated: Jul 3, 2026

Antigen-Capture Enzyme-Linked Immunosorbent Assay for Specific Detection of Mycoplasma pneumoniae
06:04

Antigen-Capture Enzyme-Linked Immunosorbent Assay for Specific Detection of Mycoplasma pneumoniae

Published on: February 24, 2023

Genotypic heterogeneity among strains of Mycoplasma gallinarum

P Dovc1, D Bencina, I Zajc

  • 1Zootechnical Department, Biotechnical Faculty, University of Ljubljana, Domzale, Slovenia, Yugoslavia.

Avian Pathology : Journal of the W.V.P.A
|December 1, 1991
PubMed

Insights

This study used DNA analysis to compare Mycoplasma gallinarum strains from chickens. Different DNA patterns were found, suggesting this method can track the bacteria

Area of Science:

  • Veterinary Microbiology
  • Molecular Biology
  • Poultry Health

Background:

  • Mycoplasma gallinarum is a significant pathogen affecting poultry.
  • Understanding genetic diversity is crucial for controlling its spread.

Purpose of the Study:

  • To analyze the genetic relatedness of Mycoplasma gallinarum field strains.
  • To evaluate DNA restriction fragment length polymorphism (RFLP) for strain differentiation.

Main Methods:

  • Genomic DNA extraction from seven field strains and one type strain of Mycoplasma gallinarum.
  • Restriction endonuclease digestion using EcoRI, HindIII, BamHI, PstI, and XhoI.
  • Analysis of DNA restriction patterns to identify polymorphisms.

Main Results:

  • Significant DNA polymorphisms were observed among Mycoplasma gallinarum strains.
  • Three distinct genomic DNA patterns were identified in field strains, differing from the type strain.
  • The enzyme BamHI effectively distinguished between related and unrelated strains based on characteristic fragment patterns.

Conclusions:

  • Restriction endonuclease DNA analysis reveals genetic diversity within Mycoplasma gallinarum.
  • Characteristic DNA patterns correlate with chicken selection, indicating potential for epidemiological studies.
  • DNA-based typing methods are valuable tools for investigating Mycoplasma gallinarum epidemiology.

Related Concept Videos

Bacterial Phylum Tenericutes01:24

Bacterial Phylum Tenericutes

The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
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...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
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.
Microbial Morphologies01:29

Microbial Morphologies

Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
Genetic Variation01:25

Genetic Variation

Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles, which...