The Role of Glycerol in the Osmotic Regulation of the Halophilic Alga Dunaliella parva.

  title={The Role of Glycerol in the Osmotic Regulation of the Halophilic Alga Dunaliella parva.},
  author={Ami Ben‐Amotz and Mordhay Avron},
  journal={Plant physiology},
  volume={51 5},
Dunaliella parva, a green halophilic alga, was found to accumulate very large amounts of intracellular glycerol. Through measurements of the intracellular volume the internal concentration of glycerol was calculated and found to be around 2.1 m in cells cultured in 1.5 m NaCl. When the extracellular salt concentration of an algal suspension was increased or decreased, the intracellular glycerol varied accordingly, reaching its new osmotic equilibrium after about 90 minutes. Since no leakage of… 

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  • Environmental Science
    Biochimica et biophysica acta
  • 1971

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Effects of Salts on the Halophilic Alga Dunaliella viridis

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Metabolism of Isofloridoside (O-α-D-Galactopyranosyl-(1→1)-Glycerol) and Osmotic Balance in the Fresh Water Alga Ochromonas

The experiments reported here show that the golden brown fresh water alga Ochromonas malhamensis has another mechanism for regulating turgor connected with the formation and degradation of the carbohydrate isofloridoside and further studies on the biochemistry of the osmotic balance in O chromonas therefore seem possible.

L'osmo-Resistenza di Dunaliella Salina Ricerche Ultrastrutturali

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Evidence that a copper enzyme, polyphenoloxidase (otherwise known as tyrosinase or catecholase), is localized in the chloroplasts of spinach beet (chard), Beta vu?garis is presented.

Preparation of Metabolically Active Protoplasts and Particle Preparations from the Blue-Green Alga, Phormidium luridum.

The protoplasts can be ruptured by dilution of the stabilizing osmoticum and, therefore, they provide a convenient starting point for the production of cell-free preparations within a biochemical reaction mixture of interest.


The glycerol is quantitatively oxidized to formaldehyde by periodic acid, using a five minute oxidation period to minimize oxidation of glucose. The iodate and periodate are reduced to iodide by a