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- W2023483103 abstract "SUMMARY The holophilic alga Dunaliella parva produces glycerol as a major product of photosynthetic 14 CO 2 incorporation and accumulates very large amounts of intracellular glycerol. A method was adopted for the determination of the cell water space based on the distribution of 14 C sorbitol and 3 H 2 O between the cells and the medium. Using these measurements the internal concentration of glycerol was found to be isoomotic with that of the medium over a broad range of 0.6 to 2.1 m NaCl. When the extracellular salt concentration of an algal suspension was increased or decreased, the intracellular water content immediately varied so as to keep an osmotic equilibrium between the cells and the medium. During the following 90 min under metabolic conditions, glycerol content changed until a new level was reached. Since no leakage of intracellular glycerol was observed above 0.6 m NaCl, these alterations in glycerol content are interpreted as due to metabolic formation and degradation of intracellular glycerol. Determination of the glycerol sensitivity of enzymic and photosynthetic reactions of cell‐free preparations from D. parva showed a broad range of tolerance to high concentrations of glycerol. These results indicate that osmoregulation in Dunaliella depends on the synthesis or degradation of intracellular glycerol in response to the external salt concentration. A proposed scheme of glycerol synthesis in Dunaliella is suggested." @default.
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- W2023483103 title "ADAPTATION OF THE UNICELLULAR ALGA <i>DUNALIELLA PARVA</i> TO A SALINE ENVIRONMENT<sup>1</sup>" @default.
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- W2023483103 doi "https://doi.org/10.1111/j.1529-8817.1975.tb02747.x" @default.
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