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  • Title: [On the taxonomy of Actinobacillus, Haemophilus, and Pasteurella: DNA base composition, respiratory quinones, and biochemical reactions of representative collection cultures (author's transl)].
    Author: Mannheim W, Pohl S, Holländer R.
    Journal: Zentralbl Bakteriol A; 1980; 246(4):512-40. PubMed ID: 7424243.
    Abstract:
    In a comparative study, 63 collection cultures representing 38 nomenspecies of, or assigned to, the genera Actinobacillus, Haemophilus, or Pasteurella were characterized by phenotypical features and deoxyribonucleic acid base composition. The latter was calculated from the thermal denaturation point. Biochemical reactions were tested in differential media commonly used for Enterobacteriaceae, and two test procedures were compared: (i) pure cultures with haematin and nicotine adenine dinucleotide added, where necessary, and (ii) xenocultures with an asaccharolytic Acinetobacter strain (ST 661/60). Furthermore, the respiratory quinones, and the effect of fumarate on oxygen-limited growth were considered. On the basis of these and some additional physiological and morphological criteria, a definition of the Actinobacillus-Haemophilus-Pasteurella group as a whole was established which appears to rank as a family. Several misclassified species, i.e. the so-called Actinobacillus actinoides, Haemophilus piscium, Haemophilus vaginalis, Pasteurella anatipestifer, and the organisms of the Bovine Lymphangitis group were eliminated, and the position of so-called Pasteurella piscicida was questioned. Some principles of subdivision of the group, and some of the practical identification procedures were discussed.
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