title: Effect of temperature on glycerol retention in the halotolerant algae dunaliella and asteromonas.
abstract: Algae of the genera Dunaliella and Asteromonas can maintain extremely high concentration gradients (>10(4)) 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.
authors: Department of Biochemistry, Weizmann Institute of Science, Rehovot, Israel.
authors: K
authors: K
authors: Wegmann
authors: A
authors: A
authors: Ben-Amotz
authors: M
authors: M
authors: Avron