Strain-Specific Transfer of Antibiotic Resistance from an Environmental Plasmid to Foodborne Pathogens
Table 2
Inhibition zone diameters (mm) of the recipients (R) and the transconjugants (T).
Strain
Kanamycin
Amoxicillin
Streptomycin
Sulfonamides
Tetracycline
R
T
R
T
R
T
R
T
R
T
Salmonella Enteritidis (MB 1139)
17
*
28
*
15
*
20
*
23
*
Salmonella Enteritidis (MB 1410)
20
<7
20
7
17
13
20
<7
21
<7
Salmonella Enteritidis (MB 1561)
21
<7
27
7
18
13
22
<7
22
<7
Salmonella Typhimurium (MB 2264)
19
<7
<7
<7
8
8
<7
<7
9
<7
Salmonella Typhimurium (MB 2265)
20
<7
26
7
15
14
20
<7
21
<7
Salmonella Typhimurium (MB 2272)
20
<7
<7
<7
15
12
25
<7
21
<7
Salmonella Typhimurium (MB 2292)
19
<7
<7
<7
15
13
<7
<7
20
<7
Salmonella Hadar (MB 1641)
18
*
<7
*
9
*
21
*
<7
*
Salmonella Infantis (KS 1-1)
19
<7
25
7
15
12
19
<7
19
<7
Salmonella Virchow (KS 87)
19
<7
26
7
15
12
21
<7
20
<7
E. coli O157:H7 (MB 3885)
21
<7
22
7
16
13
24
<7
22
<7
E. coli O157:H7 (MB 3890)
18
<7
21
7
14
14
24
<7
20
<7
E. coli O157:H7 (MB 4021)
21
<7
21
7
18
15
24
<7
21
<7
E. coli O157:H7 (MB 4260)
19
<7
20
7
15
13
24
<7
20
<7
E. coli O157:H7 (LFMFP 476)
19
<7
22
11
15
14
24
<7
21
<7
Bold: considered as resistant according to CLSI guidelines. Italic: considered as intermediate resistant according to CLSI guidelines.
*: no transconjugants obtained.
