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Transduction in Bacillus thuringiensis.

C B Thorne

    Applied and Environmental Microbiology
    |June 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Two bacteriophages, CP-51 and CP-54, facilitate generalized transduction in Bacillus thuringiensis strains. This study demonstrates their potential for chromosomal mapping and explores their characteristics, including host range and stability.

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    Area of Science:

    • Microbiology
    • Molecular Biology
    • Genetics

    Background:

    • Bacteriophage CP-51 was previously identified as a generalized transducing phage for Bacillus cereus and Bacillus anthracis.
    • Generalized transduction is a mechanism for horizontal gene transfer mediated by bacteriophages.

    Purpose of the Study:

    • To investigate the generalized transduction capabilities of bacteriophages CP-51 and CP-54 in Bacillus thuringiensis.
    • To characterize the properties of CP-51 and CP-54, including host range, morphology, serological relatedness, and stability.
    • To demonstrate the feasibility of chromosomal mapping in B. thuringiensis using cotransduction.

    Main Methods:

    • Isolation and characterization of bacteriophages CP-51 and CP-54.
    • Testing transduction capabilities across various B. thuringiensis strains.

    Related Experiment Videos

  • Assessing phage stability under different temperature and magnesium ion concentrations.
  • Analyzing cotransduction frequencies of linked genetic markers.

    • Main Results:

    • Both CP-51 and CP-54 were confirmed to mediate generalized transduction in B. thuringiensis.
    • CP-54 exhibited a broader host range than CP-51.
    • The phages were similar in morphology and serology but not identical; CP-54 was more cold-labile.
    • Magnesium ions (0.02 M) enhanced the stability of both phages at 0 and 15 degrees C.
    • Cotransduction experiments provided evidence for chromosomal mapping feasibility in B. thuringiensis.
    • Rare cross-transduction suggested nonhomology rather than phage restriction.

    Conclusions:

    • Bacteriophages CP-51 and CP-54 are effective tools for generalized transduction in Bacillus thuringiensis.
    • These phages enable genetic analysis and chromosomal mapping of B. thuringiensis strains.
    • The findings contribute to understanding phage-host interactions and genetic transfer mechanisms in Bacillus species.