1887

Abstract

SUMMARY: In stock cultures of strain 2 carrying the factor determining the production of colicine I, , together with other colicine factors, or , most of the small minority of bacteria competent to act as donors of also transmit their E factor. Most noncolicinogenic bacteria which acquire an E factor at the same time as become competent to transmit both factors. Similarly, bacteria carrying factors and/or accept normally and then usually become competent to transmit both and the E factor(s) they already carry. In experiments on the kinetics of colicine factor transmission by 2 () () newly infected with , most acceptor bacteria that acquire any colicine factor acquire all three factors, within 5–20 min. for most pairs, but within 1 min. for a very few. When conjugation is interrupted within 5 min. of mixing, fewer acceptor bacteria acquire all three factors; all single-factor and two-factor classes are then represented, so the order of transfer of the three factors must differ in different pairs. Bacteria carrying do not transfer this factor to donor bacteria from whom they acquire ; but they become able to transmit (and presumably also) within 15–20 min. of acquiring . Other observations support the hypothesis that in most competent donors carrying and/or , these factors multiply autonomously, as does .

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-33-2-231
1963-11-01
2021-07-31
Loading full text...

Full text loading...

/deliver/fulltext/micro/33/2/mic-33-2-231.html?itemId=/content/journal/micro/10.1099/00221287-33-2-231&mimeType=html&fmt=ahah

References

  1. Alföldi L., Jacob F., Wollman E. L., Maze R. 1958; Sur le déterminisme génétique de la colicinogénie.. C.R. Acad. Sci., Paris 246:3531
    [Google Scholar]
  2. Ozeki H., Stocker B. A. D., Smith S. M. 1962; Transmission of colicinogeny between strains of Salmonella typhimurium grown together.. J. gen. Microbiol 28:671
    [Google Scholar]
  3. Stocker B. A. D., Campbell J. C. 1959; The effect of non-lethal deflagellation on bacterial motility and observations on flagellar regeneration.. J. gen. Microbiol 20:670
    [Google Scholar]
  4. Stocker B. A. D., Smith S. M., Ozeki H. 1963; High infectivity of Salmonella typhimurium newly infected by the colI factor.. J. gen. Microbiol 30:201
    [Google Scholar]
  5. Watanabe T., Lyang K. W. 1962; Episome-mediated transfer of drug resistance in Enterobacteriaceae. V. Spontaneous segregation and recombination of resistance factors in Salmonella typhimurium.. J. Bact 84:422
    [Google Scholar]
  6. Wollman E. L., Jacob F. 1958; Sur les processus de conjugaison et de recombinaison chez Escherichia coli. V. Le mécanisme du transfert de matériel génétique.. Ann. Inst. Pasteur 95:641
    [Google Scholar]
  7. Wollman E. L., Jacob F., Hayes W. 1956; Conjugation and genetic recombination in Escherichia coli k-12.. Cold Spr. Harb. Symp. quant. Biol 21:141
    [Google Scholar]
  8. Zinder N. D. 1960; Sexuality and mating in Salmonella.. Science 131:924
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-33-2-231
Loading
/content/journal/micro/10.1099/00221287-33-2-231
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error