1887

Abstract

SUMMARY: An investigation has been made of the sequence of morphological events involved in the processes of microcyst formation and germination in the fruiting myxobacterium By using time-lapse photo-micrographs and phase-contrast microscopy of living cells, microcyst formation is shown to involve a shortening and thickening of the entire vegetative cell with a subsequent increase of refractility. Germination is preceded by the casting off of a sheath followed by the gradual elongation and loss of refractility of the cell. Vegetative rods will readily form spheroplasts when exposed to a variety of conditions including sulphydryl compounds. The necessity for distinguishing between spheroplasts and microcysts is pointed out.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-28-1-81
1962-04-01
2021-10-28
Loading full text...

Full text loading...

/deliver/fulltext/micro/28/1/mic-28-1-81.html?itemId=/content/journal/micro/10.1099/00221287-28-1-81&mimeType=html&fmt=ahah

References

  1. Adye J. C., Powelson D. M. 1961; Microcyst of Myxococcus xanthus. Chemical composition of the wall. J. Bait. 81:780
    [Google Scholar]
  2. Beebe J. M. 1941; The morphology and cytology of Myxococcus xanthus, n.sp. J. Bad. 42:193
    [Google Scholar]
  3. Dworkin M., Voelz H. 1961; Microcyst formation and germination in Myxococcus xanthus. Bad. Proc.85
    [Google Scholar]
  4. Grace J. B. 1951; The life cycle of Sporocytophage. J. gen. Microbiol. 5:519
    [Google Scholar]
  5. Hutchinson H. B., Clayton J. 1919; The decomposition of cellulose by an aerobic organism (Spirochaeta cytophaga, n.sp.). J. agric. Sci. 9:143
    [Google Scholar]
  6. Irving G. W., Fruton J. S., Bergmann M. 1942; On the proteolytic enzymes of animal tissue. IV. Differences between aerobic and anaerobic proteolysis. J. biol. Chem. 144:161
    [Google Scholar]
  7. Klieneberger-Nobel E. 1947; A cytological study of myxococci. J. gen. Microbiol. 1:33
    [Google Scholar]
  8. Krzemieniewska H. 1930; Le cycle evolutif de Spirochaeta cytophaga. Acta Soc. Bot. Polon. 7:507
    [Google Scholar]
  9. Liebermeister K., Kellenberger E. 1956; Studien zur L-Form der Bakterien. I. Die Umwandlung der bazillaren und die globulare Zellform bei Proteus unter Einfluss von Penicillin. Z. Naturf. 116:200
    [Google Scholar]
  10. Loebeck M. E., Ordal E. J. 1957; The nuclear cycle of Myxococcus fulvis. J. gen. Microbiol. 16:76
    [Google Scholar]
  11. Mason D. J., Powelson D. 1958; Lysis of Myxococcus xanthus. J. gen. Microbiol. 19:65
    [Google Scholar]
  12. McQuillan K. 1960; ‘Bacterial Protoplasts’, in The Bacteria, Vol. i: Structure. Gunsalus I. C., Stanier R. Y. New York: Academic Press;258
    [Google Scholar]
  13. Nickerson W. J., Falcone G. 1956; Enzymatic reduction of disulfide bonds in cell wall protein of baker’s yeast. Science 124:318
    [Google Scholar]
  14. Queiil A. 1906; Untersuchungen iiber die Myxobakterien. Zbl. Bakt (Abt. 2). 16:9
    [Google Scholar]
  15. Stanier R. Y. 1942; The Cytophaga group: A contribution to the biology of the myxobacteria. Bad. Rev. 6:143
    [Google Scholar]
  16. Sykes J. A., Moore E. B. 1959; A new chamber for tissue culture. Proc. Soc. exp. Biol., N.Y. 100:125
    [Google Scholar]
  17. Thaxter R. 1897; Contributions from the cryptogamic laboratory of Harvard University XXXIX. Further observations on the myxobacteria. Bot. Gaz. 23:395
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-28-1-81
Loading
/content/journal/micro/10.1099/00221287-28-1-81
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