1887

Abstract

SUMMARY: Electron microscopy of ultrathin sections enabled the fine structural peculiarities of a myxobacterium ( sp.) to be studied. The myxobacteria did not show the dense membrane characteristic of eubacterial cells. A very thin membrane in the myxobacteria cells was not distinguishable from the cytoplasm. In ultrathin sections of the myxobacteria there was observed a broad dark coloured cytoplasmic layer, a light mesh-like nuclear vacuole located in the centre of the cell and a rather large nucleus situated in the vacuole; the nucleus displayed density, dark colour and roundness. The elongated myxobacteria cells may include two to three nuclei. Phase-contrast microscopy of living unstained organisms of the sp. studied revealed large rounded nuclei. The observations of living cells permitted the amitotic division of nuclei which precedes cell division in myxobacteria to be studied. The studies of the ultrathin sections with the aid of electron microscopy and the microscopy of the living cells supply similar data about the fine structure of the myxobacterial cells. The structure of the myxobacterial cells is more complicated than in the Eubacteria. The peculiar life cycle and the existence of a large nucleus easily detectable (by various methods) enables one to place the myxobacteria among the relatively highly organized micro-organisms.

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1962-03-01
2024-12-14
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References

  1. Badian J. 1933; Eine cytologische Untersuchung iiber das Chromatin und den Entwicklungszyklus der Bakterien. Arch. Mikrobiol 4:409
    [Google Scholar]
  2. Beebe J. 1941; The morphology and cytology of Myxococcus xanthus, n.sp. J. Bact 42:193
    [Google Scholar]
  3. Belozersky A. 1959 Nucleoproteidi i nucleinovie kisloti rastenij ikh biologicheskoje znachenije Moskva
    [Google Scholar]
  4. Bisset K. 1952; The interpretation of appearances in cytological staining of bacteria. Exp. Cell Res 3:681
    [Google Scholar]
  5. DeLamater E. 1960 Chromosomi bacterij i mekhanism ikh delenija. Anatomija bacterij Moskva
    [Google Scholar]
  6. Grace J. 1951; The life cycle of Sporocytophaga. J. gen. Microbiol 5:519
    [Google Scholar]
  7. Hutchinson H., Clayton I. 1919; On the decomposition on cellulose by an aerobic organism (Spirochaeta cytophaga, n.sp.). J. agric. Sci 9:141
    [Google Scholar]
  8. Imshenetsky A. 1949; Electronnomicroscopichescoye isuchenye micsobacteriy. Microbiology, Moscow 18:393
    [Google Scholar]
  9. Imshenetsky A., Solntzewa L. 1936; Ob aerobnikh cellulosnikh bacteriyakh. Bull.Acad. Sci. U.R.S.S. (Ser. Biol.) 6:1115
    [Google Scholar]
  10. Imshenetsky A., Solntzewa L. 1945; O nesowershenikh formakh micsobacteriy. Microbiology, Moscow 14:22
    [Google Scholar]
  11. Klieneberger-Nobel E. 1947; A cytological study of Myxococci. J. gen. Microbiol 1:33
    [Google Scholar]
  12. Loebeck M., Ordal E. 1957; The nuclear cycle of Myxococcus fulvus . J. gen. Microbiol 16:76
    [Google Scholar]
  13. Solntzewa L. 1941; Biologiya micsobacteriy. II. Rod Melittangium i rod Chondromyces. Microbiology, Moscow 5:505
    [Google Scholar]
  14. Stanier R. 1942; The Cytophaga group: a contribution to the biology of myxobacteria. Bact. Rev 6:143
    [Google Scholar]
  15. Thaxter R. 1892; On the Myxobacteriaceae, a new order of Schizomycetes. Bot. Gaz 17:389
    [Google Scholar]
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