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[Interaction of Yersinia pestis bacteria with bacteriophage mu]
Abstract:
Yersinia pestis cells are shown to be sensitive to bacteriophage Mu cts62 infection. Lysis of bacteria has been shown to be more efficient on solid nutrient medium than in LB broth. 10(-5) pfu per ml is the maximal concentration of bacteriophage particles yielded from the broth cultures of bacteria. Moi 0.1 has been used to obtain such yields of bacteriophage. Lysogenization of Yersinia pestis cells has not been achieved when the standard methods of bacteriophage infection have been used. It was accomplished by the conjugal transfer of plasmid RP4::MU cts62 to Yersinia pestis from Escherichia coli. The deficiency of Yersinia pestis in producing bacteriophage Mu cts62 mature particles during the lytic cycle of bacteriophage is discussed.
Insights
Yersinia pestis is susceptible to bacteriophage Mu cts62 infection, with lysis more effective on solid media. Achieving lysogenization required conjugal transfer of a plasmid, not standard infection methods.
Area of Science:
- Microbiology
- Bacteriology
- Virology
Background:
- Yersinia pestis is a significant human pathogen.
- Bacteriophages are viruses that infect bacteria and can be used in phage therapy.
- Bacteriophage Mu cts62 is a temperate bacteriophage with potential applications.
Purpose of the Study:
- To investigate the susceptibility of Yersinia pestis to bacteriophage Mu cts62 infection.
- To explore methods for achieving lysogenization of Yersinia pestis with bacteriophage Mu cts62.
- To understand the limitations in Yersinia pestis's production of bacteriophage Mu cts62 during the lytic cycle.
Main Methods:
- Infection of Yersinia pestis with bacteriophage Mu cts62 at various multiplicities of infection (MOI).
- Comparison of bacterial lysis efficiency in LB broth versus solid nutrient medium.
- Conjugal transfer of plasmid RP4::MU cts62 from Escherichia coli to Yersinia pestis.
Main Results:
- Yersinia pestis demonstrated sensitivity to bacteriophage Mu cts62 infection.
- Bacterial lysis was more efficient on solid nutrient medium than in liquid LB broth.
- Maximal bacteriophage yields of 10(-5) plaque-forming units per ml were obtained from broth cultures at MOI 0.1.
- Standard infection methods failed to achieve lysogenization; successful lysogenization was accomplished via conjugal transfer of plasmid RP4::MU cts62.
- The study discusses Yersinia pestis's deficiency in producing mature bacteriophage Mu cts62 particles during the lytic cycle.
Conclusions:
- Yersinia pestis is susceptible to bacteriophage Mu cts62, with lysis efficiency dependent on the growth medium.
- Lysogenization of Yersinia pestis with bacteriophage Mu cts62 necessitates alternative methods like conjugal plasmid transfer.
- The findings highlight challenges in Yersinia pestis-bacteriophage interactions and inform potential phage therapy strategies.