Table 2.
Correlation between virulence phenotype and genotype of Enterococcus faecalis and Enterococcus faecium isolated from bovine mastitis milk (BMM) and bovine normal raw milk (NRM).
| Virulence Factor | Encoding Gene | Phenotype and Genotype of Isolates from BMM and NRM | |||||||
|---|---|---|---|---|---|---|---|---|---|
| P+G+ | P−G+ | P+G− | P−G− | ||||||
| BMM | NRM | BMM | NRM | BMM | NRM | BMM | NRM | ||
| Strong biofilm formation (=OD > 0.208) |
esp * | 35 | 5 | 3 | 0 | 18 | 6 | 25 | 30 |
| asa1 | 37 | 5 | 14 | 11 | 16 | 6 | 14 | 19 | |
| gelE * | 43 | 6 | 18 | 6 | 10 | 5 | 10 | 24 | |
| Gelatinase | gelE * | 18 | 2 | 43 | 10 | 0 | 0 | 20 | 29 |
| Hemolysin | cylA | 2 | 0 | 19 | 0 | 0 | 0 | 60 | 41 |
* indicates significant associations between virulence factors and related encoding genes (p < 0.05; Pearson’s chi-square test). BMM: bovine mastitis milk, NRM: bovine normal raw milk, P+: phenotypically expressed, P−: phenotypically not expressed, G+: encoding gene detected, G−: encoding gene not detected.