TLC chromatograms (Fig. 6) indicated an increase in intracellular trehalose levels in the cells subjected to both heat and salt compared with the controls. This increase is probably due to the heat component only since high salt did not elicit an increase in trehalose. The intracellular mannitol level nearly doubled in treated compared to untreated cells (Table I, Fig. 5). The intracellular glycerol concentration was the same in the heat-/salt-stressed cells and in the controls