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In a study of the classification of members of the family Pasteurelluceae, the polyamine patterns of 101 strains were analyzed. These strains included the type strains of species belonging to the genera Actinobacillus, Haemophilus, and Pasteurellu and additional strains of selected species, as well as numerous unnamed strains. Members of the genus Actinobacillus sensu stricto were characterized by the presence of 1,3-diaminopropane as the predominant compound. In the majority of the species of the genus Haemophilus sensu stricto 1,3- diaminopropane was also the major compound in the polyamine pattern. In contrast, Haemophilus intermedius subsp. gazogenes and Haemophilus parainjluenzae were characterized by high levels of 1,3-diaminopropane, cadaverine, and putrescine. These results confirmed the findings of Dewhirst et al. (F. E. Dewhirst, B. J. Paster, I. Olsen, and G. J. Fraser, Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. 279:35-44, 1993), who demonstrated that H. parainjluenzae is phylogenetically only distantly related to the type species of the genus Haemophilus, Haemophilus injluenzae. The phylogenetic diversity of the genus Pasteurellu sensu stricto determined by Dewhirst et al. was also reflected to some extent by different polyamine patterns. The common characteristics found in Pasteurellu multocida, Pasteurella canis, Pasteurellu dagmatis, Pasteurellu stomatis, and Pasteurella sp. strain B were high levels of putrescine and spermidine and the presence of the unusual triamine sym-now permidine. Pasteurellu avium, Pasteurellu gallinarum, and Pasteurella voluntium contained high concen- trations of 1,3-diaminopropane and spermidine. Pasteurellu lungaa contained only high concentrations of 1,3-diaminopropane, and Pasteurellu anatis was characterized by the presence of 1,3-diaminopropane as the predominant compound and high levels of putrescine and spermidine. Our data demonstrate that polyamine patterns are useful for discrimination within the family Pasteurelluceae.

Discrimination of Members of the Family Pasteurellaceae Based on Polyamine Patterns