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Table 4 Detection of gene determinants for the biosynthesis of biogenic amines and production among the enterococcal isolates

From: Antibiotic resistance, virulence determinants and production of biogenic amines among enterococci from ovine, feline, canine, porcine and human milk

      Putrescine
Origin Species Strain Tyraminea Histamineb Gene cluster Production
Porcine E. faecalis ECA3 + - + +
   ECB1 + - + +
   ECC5 + - + +
   ECD2 + - + +
   ECE1 + - + +
   ECH6 + - + +
   ECI1 + - + +
   ECI3 + - + +
Canine   PKG12 + - + +
   PRA5 + - + +
Ovine   EOA1 + - + +
   EOB6A + - + +
Feline   G8-1 K + - + +
Human   C1252 + - + +
   C901 + - + +
Porcine E. faecium ECA2B + - + +
   ECB4 + - + +
   ECC2A + - - -
   ECD3 + - - -
   ECF2 + - - -
   ECF5 + - - -
Canine   PGAH11 + - - -
   PKB4 + - - -
Human   C656 + - - -
Human E. durans C2341 + - + +
   C1943 + - + +
   C654 + - - -
   C502 + - - -
Porcine E. hirae ECC1 + - - -
   ECG1 + - + -
Ovine   EOA2 + - + +
Feline   EH11 + - + -
Ovine E. casseliflavus EOB3 + - - -
   EOB5 + - - -
  1. aDetection of the tdcA gene and production of tyramine in broth cultures; bdetection of the hdcA gene and production of histamine in broth cultures.