Skip to main content

Table 3 Minimal duration of killing of strains MC4100 and its isogenic rpoS mutant and of natural isolates with different RpoS levels. The MDK99 and MDK99.99 were calculated from time-kill curves depicted in Fig. 3

From: RpoS role in antibiotic resistance, tolerance and persistence in E. coli natural isolates

Strain

RpoS level

MDK

Ampicillin

Ciprofloxacin

Kanamycin

MC4100

2.5a

MDK99

102.57

97.77

103.95

MDK99.99

205.13

195.55

207.91

BS1154

0

MDK99

93.03

82.03

107.85

MDK99.99

186.07

164.06

215.70

J24

0

MDK99

NDb

82.09

39.70

MDK99.99

 

164.18

79.40

J13

0.24

MDK99

133.48

54.89

22.36

MDK99.99

266.97

109.78

44.71

G20

0.26

MDK99

122.48

37.75

21.32

MDK99.99

244.96

75.49

42.64

F19

0.28

MDK99

95.15

36.26

12.25

MDK99.99

190.30

72.52

24.50

G03

0.29

MDK99

120.55

66.74

12.86

MDK99.99

241.11

133.48

25.73

A05

1.72

MDK99

116.88

47.77

7.94

MDK99.99

233.76

95.54

15.88

I04

1.79

MDK99

104.43

18.42

26.62

MDK99.99

208.85

36.84

53.24

E11

1.99

MDK99

100.33

88.56

26.62

MDK99.99

200.66

177.12

53.24

I12

2.22

MDK99

137.78

115.13

28.08

MDK99.99

275.76

230.26

56.16

I25

2.48

MDK99

109.65

65.79

20.74

MDK99.99

219.29

131.58

41.49

  1. a RpoS data for MC4100 and BS1154 are from [36], all others are from [24]
  2. b strain resistant to ampicillin