[The lysogeny of Vibrio parahaemolyticus of serovar O4:K12]

Area of Science:

• Microbiology
• Virology
• Bacteriology

Background:

• Vibrio parahaemolyticus is a significant marine bacterium.
• Lysogeny, the integration of phage DNA into a host genome, is a key factor in bacterial evolution and virulence.
• Understanding phage-host interactions in V. parahaemolyticus is crucial for controlling infections.

Purpose of the Study:

• To establish and characterize lysogeny in specific strains of Vibrio parahaemolyticus.
• To investigate the characteristics of the temperate phages involved in lysogeny.
• To determine if there is a relationship between phage sensitivity and serotype in Vibrio parahaemolyticus.

Main Methods:

• Isolation and characterization of temperate phages from Vibrio parahaemolyticus O4:K12 strains.
• Morphological classification of phages according to A. S. Tikhonenko's system.
• Serological typing of the isolated phages.
• Testing Vibrio parahaemolyticus strains for sensitivity to these phages across different O- and K-serotypes.

Main Results:

• Lysogeny was successfully established in Vibrio parahaemolyticus O4:K12 strains.
• The temperate phages belonged to morphological group IV and represented a single serological type.
• No correlation was found between the sensitivity of Vibrio parahaemolyticus to these moderate phages and their O- or K-serotype specificity.

Conclusions:

• Lysogeny can be established in Vibrio parahaemolyticus O4:K12.
• The temperate phages infecting these strains are morphologically and serologically uniform.
• Phage sensitivity in Vibrio parahaemolyticus is independent of O- and K-serotype.