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Mycoplasma gallisepticum strain differentiation by arbitrary primer PCR (RAPD) fingerprinting

S J Geary1, M H Forsyth, S Aboul Saoud

  • 1Department of Pathobiology, University of Connecticut 06269-3089.

Molecular and Cellular Probes
|August 1, 1994
PubMed
Summary

Random amplified polymorphic DNA (RAPD) fingerprinting effectively distinguishes avian Mycoplasma gallisepticum strains. This DNA-based method aids in identifying and tracking pathogen transmission.

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Area of Science:

  • Microbiology
  • Genetics
  • Molecular Biology

Background:

  • Mycoplasma gallisepticum is a significant avian pathogen.
  • Accurate strain differentiation is crucial for disease control and epidemiology.

Purpose of the Study:

  • To evaluate the utility of arbitrary primer polymerase-chain-reaction (PCR)-based DNA fingerprinting for distinguishing Mycoplasma gallisepticum strains.
  • To assess the potential of this method for epidemiological surveillance of avian mycoplasmosis.

Main Methods:

  • Genomic DNA was isolated from various Mycoplasma isolates.
  • Arbitrary 10-base oligonucleotide primers were used to amplify DNA fragments via PCR.
  • Generated DNA fragment patterns (fingerprints) were analyzed for strain-specific variations.

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Main Results:

  • Random amplified polymorphic DNA (RAPD) generated distinct DNA fragment arrays for different Mycoplasma gallisepticum strains.
  • Isolates of other Mycoplasma species (M. synoviae, M. gallinarum, M. iners) produced markedly different DNA fragment patterns.
  • The RAPD method successfully identified and grouped M. gallisepticum isolates based on their genetic profiles.

Conclusions:

  • Arbitrary primer PCR (RAPD) is a valuable tool for differentiating genetic strains of Mycoplasma gallisepticum.
  • This molecular technique can be effectively employed for monitoring the transmission dynamics of this avian pathogen.