Volume 7, Number 3—June 2001
Dispatch
Expanding Drug Resistance through Integron Acquisition by IncFI Plasmids of Salmonella enterica Typhimurium
Alessandra Carattoli*
, Laura Villa*, Cristina Pezzella*, Eugenio Bordi†, and Paolo Visca†‡
, Laura Villa*, Cristina Pezzella*, Eugenio Bordi†, and Paolo Visca†‡Table
Designation and relevant characteristics of representative IncFI plasmids used for genetic analysis of integrons
| No. | Plasmid | Host strain | Origin, yeara | Resistance patternb | Trac | kb | Ref. | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | IncFI/97 | ST 366 | Albania, 1997 | Ap | Cm | Sm | Sp | Su | Tc | Hg | Km | Tp | + | 120 | 7 |
| 2 | NTP101 | ST DT 208 | England, 1974 | Ap | Cm | Sm | Sp | Su | Tc | Hg | - | 135 | 3 | ||
| 3 | pZM3 | SW 20 | Algeria, 1970 | Ap | Cm | Sm | Sp | Su | Tc | Hg | Km | + | 165 | 10 | |
| 4 | TP181 | ST DT 208 | Iran, 1975 | Ap | Cm | Sm | Sp | Su | Tc | Hg | Km | + | 165 | 3 | |
| 5 | pZM111 | SW WZM111 | Italy, 1978 | Ap | Cm | Hg | Km | Gm | + | 130 | 5 | ||||
| 6 | PZM61 | SW WZM6 | Italy, 1974 | Ap | Cm | Tc | Hg | Km | - | 145 | 11 | ||||
a Year of isolation.
b Abbreviations: Ap = ampicillin; Cm = chloramphenicol; Sm = streptomycin; Sp = spectinomycin; Su = sulfonamides; Tc = tetracycline; Hg = mercuric ions; Km = kanamycin; Tp = trimethoprim; Gm = gentamicin.
cAutotransferring properties.
