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Table 2 Occurrence of bacteriocinogeny and bacteriocin types among E. coli strains

From: Bacteriocin-encoding genes and ExPEC virulence determinants are associated in human fecal Escherichia coli strains

Bacteriocinogeny Pathotype Statistics*
  1. Non-pathogenic E. coli 2. Diarrhea-associated E. coli 3. ExPEC 1 x 2 1 x 3 2 x 3
  n = 399 (%) n = 179 (%) n = 603 (%) p p p
Bacteriocinogenic strains 130 (32.6) 66 (36.9) 445 (73.8) -** < 0.01 < 0.01
Bacteriocin types       
mV 18 (4.5) 18 (10.1) 152 (25.2) 0.04 < 0.01 < 0.01
mM 17 (4.3) 7 (3.9) 123 (20.4) - < 0.01 < 0.01
mH47 28 (7.0) 14 (7.8) 165 (27.4) - < 0.01 < 0.01
mB17 10 (2.5) 8 (4.5) 57 (9.5) - < 0.01 -
Ia 53 (13.3) 23 (12.8) 125 (20.7) - < 0.01 -
E1 19 (4.8) 15 (8.4) 94 (15.6) - < 0.01 0.04
S4 - - 11 (1.8) - 0.01 -
Bacteriocin producer strains
Mono-producers*** 63 (48.5) 23 (34.8) 141 (31.7) - < 0.01 -
Ia 23 (17.7) 3 (4.5) 18 (4.0) 0.04 < 0.01 -
Double-producers**** 44 (33.8) 25 (37.9) 161 (36.2) - - -
mH47, mM 5 (3.8) 4 (6.1) 50 (11.2) - 0.03 -
Multi-producers***** 21 (16.2) 15 (22.7) 139 (31.2) - < 0.01 -
  1. *Fisher’s exact test with Bonferroni correction.
  2. **not statistically significant.
  3. ***producers of one bacteriocin type.
  4. ****producers of two bacteriocin types.
  5. *****producers of three and more bacteriocin types.