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[Serologic characteristics of Pseudomonas fluorescens strain 7769, isolated from rye]
L A Pasichnyk1, N Ia Hubanova, R I Hvozdiak
1Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kyiv.
Abstract:
Serological properties of Pseudomonas fluorescens 7769, isolated from the damaged tissues of rye have been studied. It has been shown that P. fluorescens 7769 was serologically related but not identical as to antigenic composition with the type strain P. fluorescens 4125 of biovar 1, to which it belonged and closely related to the strain P. fluorescens 1371, isolated from wheat. Availability of weakly expressed common antigens of P. fluorescens 7769 with the agent of the disease of grain cultures P. syringae pv. atrofaciens has been established.
Insights
Pseudomonas fluorescens 7769 from rye shares antigens with related strains and the plant pathogen Pseudomonas syringae pv. atrofaciens. This finding aids in understanding bacterial relationships and plant disease. Keywords: Pseudomonas fluorescens, serological properties, plant disease.
Area of Science:
- Microbiology
- Plant Pathology
- Bacteriology
Background:
- Pseudomonas fluorescens is a common soil bacterium.
- Certain strains can cause plant diseases or be associated with damaged plant tissues.
- Understanding the serological relationships between bacterial strains is crucial for identification and classification.
Purpose of the Study:
- To investigate the serological properties of Pseudomonas fluorescens 7769 isolated from rye.
- To determine its antigenic relationship with other Pseudomonas strains, including type strains and plant pathogens.
Main Methods:
- Serological analysis of Pseudomonas fluorescens 7769.
- Comparison of antigenic composition with reference strains like P. fluorescens 4125 (biovar 1 type strain) and P. fluorescens 1371.
- Investigation of common antigens with Pseudomonas syringae pv. atrofaciens.
Main Results:
- Pseudomonas fluorescens 7769 is serologically related but not identical to the biovar 1 type strain P. fluorescens 4125.
- A close serological relationship was found with P. fluorescens 1371, isolated from wheat.
- Weakly expressed common antigens were identified between P. fluorescens 7769 and Pseudomonas syringae pv. atrofaciens, a pathogen of grain crops.
Conclusions:
- Pseudomonas fluorescens 7769 possesses unique and shared antigenic determinants.
- The study highlights cross-reactivity between P. fluorescens strains and with a significant plant pathogen.
- Findings contribute to the serological characterization of Pseudomonas species and their interactions with plants.