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Fine structure of Ectothiorhodospira mobilis strain 8113 thylakoids: Chemical fixation and freeze-etching studies

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An electron microscopic examination of thin-sections of chemically fixed cells and of frozen-etched cell preparations of the marine photosynthetic bacterium Ectothiorhodospira mobilis has been carried out. The morphology of cells grown in media with 3,5 or 10% (w/v) NaCl is similar. The photosynthetic apparatus is a lamellar type. The number of thylakoid stacks is a function of light intensity; at low light intensity there is generally only one large thylakoid stack, while at high light intensity 3–4 small, randomly distributed thylakoid stacks occur.

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Holt, S.C., Trüper, H.G. & Takács, B.J. Fine structure of Ectothiorhodospira mobilis strain 8113 thylakoids: Chemical fixation and freeze-etching studies. Archiv. Mikrobiol. 62, 111–128 (1968).

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  • Light Intensity
  • Fine Structure
  • Microscopic Examination
  • Photosynthetic Apparatus
  • Cell Preparation