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Latent H Locus in Non‐motile Escherichia coli
Author(s) -
Matsumoto Hideki,
Tazaki Tadakatu
Publication year - 1967
Publication title -
japanese journal of microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0021-5139
DOI - 10.1111/j.1348-0421.1967.tb00316.x
Subject(s) - locus (genetics) , biology , escherichia coli , transduction (biophysics) , motility , antigen , microbiology and biotechnology , strain (injury) , flagellum , genetics , gene , biochemistry , anatomy
Transfer of flagellar characters from a motile strain of E. coli K12 Hfr to non‐motile strains of E. coli F— by sexual conjugation and transduction tests was done. Motile recombinants were obtained from eight out of ten non‐motile strains tested. Non‐motile strains of E. coli tested were classified into three genetic groups according to their flagellar characters: (1) Motile recombinants of the first group possessed H antigens other than that of the donor ( E. coli K12), or possessed the same H antigens as that of the donor, inheriting their latent H locus intact. (2) The H antigens of the motile recombinants from the second group were always the same as that of donors. Attempts to prove existence of latent H locus in strains in this group by recombination and transduction were unsuccessful. (3) No motile recombinants were obtainable from the third group of non‐motile E. coli strains. In addition to the above, some of our experimental data on the motility of E. coli are described.