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Cell wall and phospholipid composition and their contribution to the salt tolerance of Halomonas elongata.
- Source :
-
Journal of bacteriology [J Bacteriol] 1984 Dec; Vol. 160 (3), pp. 879-83. - Publication Year :
- 1984
-
Abstract
- The salt-tolerant bacterium Halomonas elongata makes a variety of physiological adaptations in response to increases in the salt concentration of its growth medium. The cell walls become more compact and internally coherent. The overall lipid pattern shows an increased amount of negatively charged lipids. In addition, the peptidoglycan composition of H. elongata, although not changing in response to increased NaCl, contains the hydrophobic amino acid leucine which is unique among bacterial species. The results suggest that H. elongata is able to live in a wide variety of salt concentrations because it alters its cell physiology in ways which increase both structural integrity and the amount of less-mobile, "structured" cell water, making the cells less susceptible to NaCl-induced dehydration.
- Subjects :
- Acclimatization
Cell Wall analysis
Cell Wall ultrastructure
Freeze Fracturing
Gram-Negative Aerobic Bacteria analysis
Gram-Negative Aerobic Bacteria ultrastructure
Microscopy, Electron
Osmolar Concentration
Sodium Chloride pharmacology
Cell Wall physiology
Gram-Negative Aerobic Bacteria physiology
Membrane Lipids analysis
Phospholipids analysis
Subjects
Details
- Language :
- English
- ISSN :
- 0021-9193
- Volume :
- 160
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Journal of bacteriology
- Publication Type :
- Academic Journal
- Accession number :
- 6501232
- Full Text :
- https://doi.org/10.1128/jb.160.3.879-883.1984