Table 2

Virulence assay of E. carotovora strains on plant tissues

PlantTissue
Inoculum*Maceration area, mm2
SCG1 (aiiA)SCGI (pLAFR3)SCG1
PotatoTuber1000136  ± 33151  ± 16
10−1098  ± 22156  ± 0
CeleryPetiole10012 ± 0503  ± 10406  ± 15
10−10283  ± 52294  ± 13
CarrotRoot1000130  ± 28176  ± 50
10−10101  ± 21128  ± 21
EggplantFruit1000380  ± 15480  ± 75
10−10349  ± 29370  ± 44
Chinese cabbageLeaf1006 ± 1308  ± 29320  ± 39
10−10148  ± 23153  ± 5
  • * The 100 inoculum equals to 2 × 109 colony-forming units/ml, which was diluted 10 times to prepare 10−1 inoculum. 

  • The maceration areas were measured 48 h after inoculation by taking 1:1 photographs; data are means of three replicates.