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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo - Volume 17, Issue 3, 1967

Volume 17, Issue 3

Volume 17, Issue 3, 1967

  • Articles

      • The status of the genus

        https://doi.org/10.1099/00207713-17-3-231
        SUMMARY

        The genus has had an irregular history, and there is a need for the designation, with international approval, of a neotype strain for the type species, . The only strain which has been proposed for designation is ATCC 398. The genus has not yet been clearly distinguished from . The capacity to grow anaerobically at the expense of glucose fermentation shows a gradual transition in a series of strains and lacks precision as a criterion for differentiation between these two genera.

    • The nomenclatural status of

      https://doi.org/10.1099/00207713-17-3-241
      ABSTRACT

      has been used as the scientific name for two different bacteria, the one causing bovine tuberculosis, the other occurring in freshly drawn cow’s milk. In the past the former bacterium was regarded as a subspecies (variety) of (. . subsp. ), and in recent years it has been recognized as a distinct species, . ; whether as a subspecies or a species, the name of this organism is commonly attributed to “Bergey . 1934.” For the name of the latter bacterium, “(Bergey . 1923) Krasil’nikov 1949” is the author citation ordinarily given. However, from a careful analysis of the facts, it is evident that none of the specific or subspecific names in the genus involving the epithet “ has been validly published. Because the epithet “ has been used the world over for many years in the scientific name of the organism responsible for bovine tuberculosis, the Judicial Commission of the International Committee on Nomenclature of Bacteria is requested to issue an Opinion conserving the name (Bergey . 1934) Reed 1957 (Basionym: . subsp. Bergey . 1 934).

    • Designation of the type strain for Schaub and Hauber 1948

      https://doi.org/10.1099/00207713-17-3-245
      SUMMARY

      Steel and Cowan (1964) designated Schaub’s Biol. 1 as the type strain for Schaub and Hauber 1948. However, this strain was not included among those originally studied by Schaub and Hauber (1948) and cannot be recognized (Rule 9d, Note b, Intl. Code of Nomenclature of Bacteria). One of the original strains used by Schaub and Hauber (Schaub 81, American Type Culture Collection (ATCC) 19606, RH 2208) is here designated as the type for Schaub and Hauber 1948. The morphology, physiology, and per cent guanine plus cytosine of strain 81 are described and more than sixty characters of the strain recorded. The characteristics of strain 81 were found to be in good agreement with those given in the original description by Schaub and Hauber (1948).

    • Decarboxylation of L-histidine by Clostridia 1

      https://doi.org/10.1099/00207713-17-3-269
      SUMMARY

      A porcelain plate microtest by which the decarboxylation of L-histidine by Clostridia could be detected within 6 hours is described. It was more sensitive than chromatographic procedures for detecting histamine production, using ninhydrin or Pauly’s reagent as a developing agent, which were used for confirmation. All of 26 type A strains of and the one type F strain tested decarboxylated histidine. Strongly positive tests were obtained except for some of the Hobbs type strains that gave much weaker reactions. Two type C strains gave negative tests. Fifteen of 19 strains of also produced decarboxylation, but the reactions were weak and inconsistent. No strains of 18 other species of Clostridia tested produced decarboxylation.

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