Comparison of the “A. massiliae” phenotype with those of other members of the family Actinomycetaceae, showing its relatedness to other Actinobaculum spp.a

OrganismNitrate reductionUrease activityEsculin hydrolysisAcid produced from:β-Galactosidaseα-GlucosidaseN-Acetyl-β- glucosaminidaseβ-Hemolysis
Actinobaculum schaalii ++
Actinobaculum suis ++NDND
Actinomyces bovis V+V
Arcanobacterium bernardiae +V
Arcanobacterium haemolyticum +ND++
Arcanobacterium phocae V(+)(+)+
Arcanobacterium pyogenes V+V++
Clinical isolate from this study++
  • a Adapted from Lawson et al. (3). Abbreviations and symbols: +, positive reaction; −, negative reaction; (+), weakly positive reaction; V, variable reaction; ND, not determined.