TABLE 3.
Summary of conjugation experiments
| ECOR strain no. | Conjugationa | Marker transferred | Linkageb | Colicin type and F-related plasmidsc |
|---|---|---|---|---|
| 3 | + | Sul Str Spc Tet | Sul Str Spc; Tet | ColIa; F-like |
| 4 | + | Sul | NAd | F-like |
| 6 | − | NA | NA | |
| 10 | +/− | Amp | NA | F-like |
| 16 | + | Str | None | F-like |
| 17 | + | Sul | None | F-like |
| 18 | − | NA | NA | |
| 19 | + | Sul Tet | None | F-like |
| 24 | + | Sul Str | Sul Str | ColE1; F-like |
| 25 | − | NA | NA | ColB; F-like (R1 type) |
| 30 | − | NA | NA | |
| 31 | + | Sul Str Spc | Sul Str Spc | ColE1; F-like |
| 37 | − | NA | NA | F-like (R1 type) |
| 38 | − | NA | NA | ColIa |
| 39 | − | NA | NA | ColE1 |
| 48 | − | NA | NA | ColIb; F-like (R1 type) |
| 54 | − | NA | NA | |
| 70 | ++ | Sul | None | F-like (R1 type) |
a
The recipient was E. coli K802NR. −, no transfer; +/−, sporadic transfer; +, transfer frequency, >10−4; ++, transfer frequency, >10−1.
b
Transconjugants were tested for sensitivity to all the antibiotics listed in Materials and Methods.
c
Data for production of colicin are from the work of Riley and Gordon (47), and data for F-related plasmid content are from the work of Boyd et al. (7).
d
NA, not applicable.