ULTRASTRUCTURE OF MYCOPLASMA SPECIES

Author:

Domermuth C. H.1,Nielsen M. H.2,Freundt E. A.3,Birch-Andersen A.4

Affiliation:

1. Rickettsia and Virus Department, Royal Veterinary and Agricultural College of Copenhagen, Copenhagen, Denmark

2. Biophysics Department, Royal Veterinary and Agricultural College of Copenhagen, Copenhagen, Denmark

3. Statens Seruminstitut, Royal Veterinary and Agricultural College of Copenhagen, Copenhagen, Denmark

4. Department of Virology, Royal Veterinary and Agricultural College of Copenhagen, Copenhagen, Denmark

Abstract

Domermuth , C. H. (Statens Seruminstitut, Copenhagen, Denmark), M. H. Nielsen, E. A. Freundt, and A. Birch-Andersen . Ultrastructure of Mycoplasma species. J. Bacteriol. 88: 727–744. 1964.—The ultrastructure of 19 strains (15 species) of Mycoplasmatales grown on solid medium was studied with the aid of an electron microscope. The cells possessed a triple-layered limiting membrane 75 to 100 A thick. This membrane appeared to be symmetrical in some strains and asymmetrical in others. An electron-dense material found in close contact with the cell surface was tentatively interpreted to be a capsular substance. Ribosomes and strands of nuclear material were observed in the cytoplasm of cells of all strains. Ribosomes observed in the JA strain of M. gallisepticum were frequently arranged in a regular geometric pattern of characteristic appearance. Dense inclusions sometimes limited by triple-layered membranes (possibly developing elementary bodies), as well as membrane-surrounded vesicles, were observed in the cytoplasm of cells of some strains.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Reference11 articles.

1. BREED R. S. E. G. D. MURRAY AND N. R. SMITH. 1957. Bergey's manual of determinative bacteriology 7th ed. The Williams & Wilkins Co. Baltimore.

2. Fine structure of pleuropneumonialike organisms in pure culture and in infected tissue culture cells;EDWARDS G. A.;J. Bacteriol.,1960

3. FREUNDT E. A. 1958. The MIycoplasmataceae (the pleuropneumonia group of organisms). Munksgard Copenhagen Denmark.

4. Morphology and classification of the PPLO;FREUNDT E. A.;Ann. N. Y. Acad. Sci.,1960

5. Carbohydrates of some Mycoplasma strains;PLACKETT P., S.;Intern. Congr. Microbiol. 8th, Montreal, p.,1962

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