Changes in Metabolism of Scenedesmus Obliquus after Relief of Salinization Stress

This was an investigation into the changes in some metabolites of salinized algal cells, after being relieved from salinity stress. 7-day salinized. Scenedesmus obliquus cells showed considerable increases in proline, soluble proteins and soluble carbohydrates, but with concomitant decrease in other free amino acids, insoluble-and total proteins and insoluble-and total carbohydrates. Upon rehydration, free proline, soluble proteins and soluble carbohydrates declined rapidly with time reaching, 24 hours later, the level found in the control culture. The levels of other free amino acids, insoluble and total proteins, and insoluble-and total carbohydrates increased progessively from the time of rewatering. During the periods of salinization and rehydration, none of these metabolites was recorded in the extracellular medium.