Salmonella enteriditis as a Genetic Donor in Intraspecific and Interspecific Grosses Initiated by Colicine Factors

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Abstract
SUMMARY: Colicine factors I and E1 enable Salmonella enteriditis, like S. typhimurium, to pair at high frequency (e.g. with 50-90 % of recipient cells) either with its own derivatives or with those of other species such as S. typhi and S. typhimurium. However, genetic recombinants occur at only low frequency in intraspecific crosses (about 10-7 of recipient cells); whereas in interspecific crosses with S. enteriditis as donor, recombination with S. typhimurium involving either closely linked or single markers occurred at an even lower frequency (about 10-9 of recipient cells). No detectable recombinants were isolated when using either S. enteriditis or S. typhimurium as donor and S. typhi as recipient, although colicine factors were transferred at high frequency.