Freeze-Etching of Azotobacter vinelandii: Examination of Wall, Exine, and Vesicles

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Article on the freeze-etching of Azotobacter vinelandii and an examination of wall, exine, and vesicles.

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7 p.: ill.

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Cagle, Gerald D.; Vela, G. Roland, 1927- & Pfister, Robert M. March 1972.

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Article on the freeze-etching of Azotobacter vinelandii and an examination of wall, exine, and vesicles.

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7 p.: ill.

Notes

Abstract: The structure of the cell wall, the arrangement of the cyst exine, and the origin and distribution of intine vesicles in Azotobacter vinelandii ATCC 12837 were examined by freeze-etching and conventional electron microscopic techniques. In the vegetative organism the cell wall appears to have a woven texture which disappears during cyst formation. The exine is composed of two different types of material: the outer layer is a fibrous, amorphous layer, and the numerous inner layers form the basic hexagonal structures which unite to form the cyst coat. The presence of intine vesicles in the encysting organism was confirmed in frozen-etched cells. The appearance of frozen-etched cells and cysts and the distribution of capsular material indicate that extracellular polysaccharide is an important factor in cyst formation.

Copyright © 1972 American Society for Microbiology.

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  • Journal of Bacteriology, 1972, Washington DC: American Society for Microbiology, pp. 1191-1197

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  • Publication Title: Journal of Bacteriology
  • Volume: 109
  • Issue: 3
  • Page Start: 1191
  • Page End: 1197
  • Peer Reviewed: Yes

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  • March 1972

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  • May 29, 2014, 5:29 p.m.

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Cagle, Gerald D.; Vela, G. Roland, 1927- & Pfister, Robert M. Freeze-Etching of Azotobacter vinelandii: Examination of Wall, Exine, and Vesicles, article, March 1972; [Washington, D.C.]. (digital.library.unt.edu/ark:/67531/metadc287069/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.