Phenotypic and genetic relationships of so-called Moraxella (Pasteurella) anatipestifer to the Flavobacterium/Cytophaga group |
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| Authors: | K Piechulla S Pohl W Mannheim |
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| Affiliation: | 1. Zentrum für Hygiene und Medizinische Mikrobiologie, Abteilung Bakteriologie, Klinikum der Philipps-Universität Pilgrimstein 2, D-3550 Marburg West Germany;2. Hygiene Institut der Ruprecht-Karls-Universität, Im Neuenheimer Feld 324, D-6900 Heidelberg West Germany;1. Doctor, Department of Dental Emergency, Beijing Stomatological Hospital and School of Stomatology, Capital Medical University, Beijing, China;2. Professor, Department of Oral Medicine, Beijing Stomatological Hospital and School of Stomatology, Capital Medical University, Beijing, China;3. Professor, Beijing Institute for Dental Research, Beijing Stomatological Hospital and School of Stomatology, Capital Medical University, Beijing, China;1. Diagnostic Center for Animal Hygiene and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada, Obihiro, Hokkaido 080-8555, Japan;2. National Institute of Veterinary Research, 86 Truong Chinh, Dong Da, Hanoi, Vietnam;3. Faculty of Veterinary Science, Mahidol University, Nakhon Pathom, Thailand;4. College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda;5. Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt;6. Japan Livestock Technology Association, 3-20-9 Yushima, Bunkyo-ku, Tokyo 113-0034, Japan;1. Shanghai Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, 518 Ziyue Road, Shanghai 200241, China;2. Anhui Agricultural University, College of Animal Science and Technology, 130 West Changjiang Road, Hefei 230036, China |
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| Abstract: | So-called Moraxella (or Pasteurella) anatipestifer and members of the Flavobacterium/Cytophaga group exhibit remarkable common features: lack of flagellation, low guanine + cytosine content of the chromosomal DNA, production of menaquinones and branched-chain fatty acids, absence of carbohydrate fermentation, and similar patterns of hydrolytic enzymes. Using the renaturation method of DNA:DNA hybridization two urease-negative European isolates and the urease-positive type strain (which was isolated in the United States) of M. P. anatipestifer were shown to have about 85% of their genome DNA base sequences in common; they may represent two subspecies. The type strain of this species was neither measurably related to the type species of the genus Moraxella nor to selected members of the family Pasteurellaceae (Pohl 1981). On the other hand, low but significant degrees of DNA binding between selected strains of so-called M. anatipestifer, Cytophaga marinoflava, Flavobacterium meningosepticum, F. odoratum and F. pectinovorum were observed. On the basis of these findings the transfer of the so-called M. anatipestifer to the Flavobacterium/Cytophaga group (family Cytophagaceae) is proposed. More detailed investigations are required to establish its relationship at the genus level. |
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