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Transfer of plasmids among bacilli.

B N Dancer

    Journal of General Microbiology
    |November 1, 1980
    PubMed
    Summary

    Plasmids from Staphylococcus aureus were successfully transferred to Bacillus subtilis and other Bacillus species using protoplast fusion. These plasmids replicate and express normally in all tested Bacillus species, enabling genetic exchange.

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    Area of Science:

    • Microbiology
    • Molecular Biology
    • Genetics

    Background:

    • Plasmids are crucial for bacterial adaptation and evolution.
    • Efficient plasmid transfer methods are essential for genetic manipulation in bacteria.
    • Bacillus species are important in industrial and medical applications.

    Purpose of the Study:

    • To investigate the feasibility of transferring plasmids between Staphylococcus aureus and Bacillus subtilis.
    • To explore plasmid transfer among different Bacillus species.
    • To assess the stability and expression of transferred plasmids in Bacillus hosts.

    Main Methods:

    • Plasmid DNA was isolated from Staphylococcus aureus.
    • Protoplast fusion was employed to transfer plasmids into Bacillus subtilis.
    • Regeneration of protoplasts allowed for the selection of successful transformants.
    • Plasmid replication and expression were confirmed in recipient strains.

    Main Results:

    • Successful intergeneric transfer of plasmids from Staphylococcus aureus to Bacillus subtilis was achieved.
    • Plasmids were also transferred between various Bacillus species via protoplast fusion.
    • The transferred plasmids demonstrated stable replication and normal gene expression in all examined Bacillus hosts.
    • This indicates broad host compatibility for these plasmids within the Bacillus genus.

    Conclusions:

    • Protoplast fusion is an effective method for intergeneric and intrageneric plasmid transfer in Bacillus.
    • The studied plasmids are compatible with and stably maintained in diverse Bacillus species.
    • This facilitates the potential for genetic engineering and functional studies in Bacillus using Staphylococcus-derived plasmids.

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