Abstract
Algae of the genera Dunaliella and Asteromonas can maintain extremely high concentration gradients (>104) of glycerol between the intracellular space and the medium. This unique ability is highly temperature-dependent. Treating the algae for several minutes at temperatures exceeding 60 C causes complete release of all the internally held glycerol; 50% release occurs around 50 C, but essentially none is released below 40 C. A similar behavior was observed in several species of Dunaliella, and one of Asteromonas and is independent of the salt concentration of the medium. The underlying mechanism may involve a temperature-dependent conformational transition of a component of the cellular membrane which is essential for glycerol impermeability.
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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Ben-Amotz A., Avron M. The Role of Glycerol in the Osmotic Regulation of the Halophilic Alga Dunaliella parva. Plant Physiol. 1973 May;51(5):875–878. doi: 10.1104/pp.51.5.875. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Borowitzka L. J., Brown A. D. The salt relations of marine and halophilic species of the unicellular green alga, Dunaliella. The role of glycerol as a compatible solute. Arch Mikrobiol. 1974 Mar 1;96(1):37–52. doi: 10.1007/BF00590161. [DOI] [PubMed] [Google Scholar]
- Madden T. D., Quinn P. J. Arrhenius discontinuities of Ca2+-ATPase activity are unrelated to changes in membrane lipid fluidity of sarcoplasmic reticulum. FEBS Lett. 1979 Nov 1;107(1):110–112. doi: 10.1016/0014-5793(79)80474-3. [DOI] [PubMed] [Google Scholar]
- Wegmann K. Osmotic regulation of photosynthetic glycerol production in Dunaliella. Biochim Biophys Acta. 1971 Jun 15;234(3):317–323. doi: 10.1016/0005-2728(71)90197-6. [DOI] [PubMed] [Google Scholar]