Utilization of haem compounds by Aeromonas salmonicida

. The ability of A‐layer‐positi ve (A + ) and A‐layer‐negative (A − ) strains of Aeromonas salmonicida to utilize haem sources of iron under conditions of iron‐restriction was evaluated. In a plate bioassay, only A + strains of A. salmonicida were able to utilize haem from a variety of sources including haem, haemin, myoglobin, haemoglobin, haemoglobin‐ haptoglobin and haem‐albumin complexes. Trypsin‐digestion of whole cells abolished haem‐...