f Flagella, Gas Vacuoles and Cell-wall Structure in Halobacterium halobium; an Electron Microscope Study
- By A. L. HOUWINK
- First Published Online: 01 August 1956, Microbiology 15: 146-150, doi: 10.1099/00221287-15-1-146
- Subject: Articles
- Issue Published:
SUMMARY: A droplet of a suspension of Halobacterium halobium in a concentrated brine when left to dry on a collodion-covered grid yields a useful preparation for electron microscopy. Two strains, one red and one pink, were examined. Both strains have polar tufts of flagella. The cell wall contains a single layer of hexagonally arranged globular particles. Halobacterium halobium has these characteristics in common with Spirillum spp., but unlike the true Spirillum spp. it is rod-shaped.
Electron microscopical examination showed that the gas vacuoles observed by Petter (1931, 1932) to be a feature of pink strains of H. halobium actually were smaller but much more numerous than the optical microscope revealed. Stereo-pictures show that these vacuoles did not collapse upon desiccation of the bacteria.
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