1887

Abstract

The type strains of the three currently recognized species of the genus Ørskov 1928 ( Ørskov, strain ATCC 25396; , strain BKM 859; and Raj, strain ATCC 23276), together with strains apparently belonging to each species, were examined to determine their taxonomic relationships. There were many differences between the type strains in their morphological and physiological characteristics as well as in the guanine-plus-cytosine (G+C) contents of their deoxyribonucleic acids (DNAs). Therefore, we propose to split the genus into three genera, each containing a single species. , the type species of , remains as the only species in the genus. It is characterized by the formation of cellular rings which are produced when the ends of the curved cells overlap. It is nonpigmented and is respiratory in its metabolism; the G+C content of its DNA ranges from 66.3 to 68.4 mol%. ATCC 22376 and three similar strains were found to possess characters in agreement with those given in the original description of , and they were placed in that species. The name Raj 1970 thus becomes a later subjective synonym of (Eisenberg 1891) Migula 1894. This species is characterized by the formation of wavy and coiled filaments, yellow pigmentation on (MS) agar, and respiratory metabolism. The G+C content of its DNA ranges from 51.0 to 52.9 mol%. Strain DSM 74 is designated as the neotype strain of BKM 859 and one similar strain were placed in a new genus, (Gromov) comb, nov., the type species, is composed of rods which are straight to curved, the degree of curvature varying among individual cells within a culture. The cells may form long, sinuous filaments and rings. Colonies on MS agar are pale pink to rose-colored. Metabolism is respiratory, and the G+C content of its DNA ranges from 39.5 to 40.3 mol%. The type strain of is strain BKM 859.

Loading

Article metrics loading...

/content/journal/ijsem/10.1099/00207713-27-2-147
1977-04-01
2022-01-17
Loading full text...

Full text loading...

/deliver/fulltext/ijsem/27/2/ijs-27-2-147.html?itemId=/content/journal/ijsem/10.1099/00207713-27-2-147&mimeType=html&fmt=ahah

References

  1. Altazan D., Larkin J. M., Socolofsky M. D. 1973; Some preliminary observations on Spirosoma. La. Acad. Sci. 38:58–60
    [Google Scholar]
  2. Bergey D. H., Breed R. S., Murray E. G. D. 1948 Bergey’s manual of determinative bacteriology. , 6th. The Williams and Wilkins Co.; Baltimore:
    [Google Scholar]
  3. Buchanan R. E., Holt J. G., Lessei E. F. Jr. 1966 Index Bergeyana. The Williams and Wilkins Co.; Baltimore:
    [Google Scholar]
  4. Claus D. 1967; Taxonomy of some highly pleomorphic bacteria. Spisy Prirodoved. Fak. Univ. J. E. Purkyne Brne 40:254–257
    [Google Scholar]
  5. Claus D., Bergendahl J. E., Mandel M. 1968; DNA base composition of Microcyclus species and organisms of similar morphology. Arch. Mikrobiol. 63:26–28
    [Google Scholar]
  6. Dworkin M. 1969; Sensitivity of gliding bacteria to actinomycin D.. J. Bacteriol. 98:851–852
    [Google Scholar]
  7. Eisenberg J. 1891 Bacteriologische Diagnostik. 212 Hilfstabellen zum Gebrauche beim Praktischen Arbeiten VII-XXX 3 Aufl Leopold Voss; Hamburg:
    [Google Scholar]
  8. Gordon R. E., Mihm J. M. 1957; A comparative study of some strains received as nocardiae. J. Bacteriol. 73:15–27
    [Google Scholar]
  9. Gromov B. V. 1963; A new bacterium of the genus Microcyclus. Dokl. Akad. Nauk. SSSR 152:733–734
    [Google Scholar]
  10. Holding A. J., Collee J. G. 1971 Routine biochem-ical tests. 1–33 Norrie J. R., Ribbons D. W.ed Methods in microbiology 6A Academic Press Inc.; New York:
    [Google Scholar]
  11. Hugh R., Leifson E. 1953; The taxonomie signifi-cance of fermentative versus oxidative metabolism of carbohydrates by various gram-negative bacteria. J. Bacteriol. 66:24–26
    [Google Scholar]
  12. Lapage S. P., Sneath P. H. A., Lessel E. F., Skerman V. B. D., Seeliger H. P. R., Clark W. A.ed 1975 International code of nomenclature of bacteria, 1976 revision. American Society for Microbiology; Washington, D. C.:
    [Google Scholar]
  13. Mandel M., Marmur J. 1968 Use of ultraviolet absorbance temperature for determining the guanine plus cytosine content of DNA. 195–206 Colowick S. P., Kaplan N. W.ed Methods in enzymology 12B Academic Press Inc; New York:
    [Google Scholar]
  14. Marmur J. 1961; A procedure for the isolation of deoxy-ribonucleic acid from microorganisms. J. Mol. Biol. 3:208–218
    [Google Scholar]
  15. Migula W. 1894; Über ein neues System der Bakterien. Arb. Bakteriol. Inst. Karlsruhe. 1:235–238
    [Google Scholar]
  16. Migula W. 1900 System der Bakterien. 2 Publishing House of Gustav Fisher; Jena:
    [Google Scholar]
  17. Ørskov J. 1923; Beschreibung eines neuen Microben, Microcyclus aquaticus, mit eigentümlicher Morphologie. Zentrabi. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. I Orig. 107:180–184
    [Google Scholar]
  18. Raj H. D. 1970; A new species-MicrocycZus flavus. Int. J. Syst. Bacteriol. 20:61–81
    [Google Scholar]
  19. Staley J. T. 1974 Genus Microcyclus. 214 Buchanan R. E., Gibbons N. E.ed Bergey’s manual of determinative bacteriology, 8th. The Williams and Wilkins Co.; Baltimore:
    [Google Scholar]
  20. Weibel E. 1887; Untersuchungen über Vibrionen. Zen-tralbl. Bakteriol. Parasitenkd. Infektionskr Hyg. Abt. 1 Orig. 4:225–232
    [Google Scholar]
  21. Weibel E. 1888; Untersuchungen über Vibrionen. Zen-tralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. 4:224–232
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/ijsem/10.1099/00207713-27-2-147
Loading
/content/journal/ijsem/10.1099/00207713-27-2-147
Loading

Data & Media loading...

Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error