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A minimal medium for growth of Pasteurella multocida
P E Jablonski1, M Jaworski, C J Hovde
1Department of Biological Sciences, Northern Illinois University, DeKalb 60115-2861, USA. Pjablonski@niu.edu
FEMS Microbiology Letters
|July 1, 1996
Summary
Researchers developed a novel minimal medium supporting Pasteurella multocida growth. This medium enables Pasteurella multocida toxin production and supports 87% of tested strains, aiding fowl cholera research.
Area of Science:
- Microbiology
- Bacteriology
- Animal Health
Background:
- Pasteurella multocida is an important bacterial pathogen causing significant diseases in animals, including fowl cholera.
- The lack of a defined minimal medium has hindered detailed studies on P. multocida physiology and virulence factor production.
Purpose of the Study:
- To develop and characterize a minimal medium that supports the growth of both toxigenic and nontoxigenic Pasteurella multocida strains.
- To assess the utility of the medium for Pasteurella multocida toxin (PMT) production and its broad applicability across different strains.
Main Methods:
- Formulation of a 17-ingredient minimal medium using P. multocida P1059 (ATCC 15742) as a model.
- Testing the growth of 46 additional P. multocida strains and evaluating growth through serial transfers.
- Cultivating a toxigenic P. multocida strain in the medium to assess Pasteurella multocida toxin production.
Main Results:
- The developed minimal medium supported growth of P. multocida to optical densities > 0.5 (600 nm).
- 87% (40/46) of tested P. multocida strains demonstrated robust growth comparable to the model strain over 10 serial transfers.
- Pasteurella multocida toxin (PMT) was successfully produced by a toxigenic strain in the minimal medium.
- No growth was observed for Pasteurella haemolytica or Pasteurella trehalosi strains in this medium.
Conclusions:
- A defined minimal medium has been established for Pasteurella multocida, facilitating research into its growth requirements and virulence.
- The medium supports a high percentage of P. multocida strains and enables toxin production, making it a valuable tool for studying fowl cholera and related infections.