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. 1981 Oct;148(1):374–378. doi: 10.1128/jb.148.1.374-378.1981

Mutagenesis by insertion of drug resistance transposon Tn7 into a vibrio species.

J A Thomson, M Hendson, R M Magnes
PMCID: PMC216204  PMID: 6270064

Abstract

A halotolerant, collagenolytic strain of Vibrio sp. was conjugated with an Escherichia coli strain carrying plasmid RP4. The plasmid was transferred to and maintained in the Vibrio and could be subsequently transferred in matings to suitably marked stains of the same species. After conjugation with an E. coli carrying the cointegrate plasmid RP4::Mu cts61::Tn7, Vibrio transconjugants were selected that carried Tn7 inserted into the bacterial chromosome. A large proportion of these transconjugants were auxotrophic, showing that plasmid suicide by Mu can be used to isolate Tn7-derived mutants in Vibrio. Approximately half of the auxotrophs isolate Tn7-derived mutants in Vibrio. Approximately half of the auxotrophs isolated were ilv mutants, all of which exhibited the same phenotype. Thus, although Tn7 insertion can induce auxotrophy, including trp, thy, his and ura, in Vibrio, there does appear to be a hot spot for integration in the ilv operon.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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