FIG. 3.

Total sugar and insoluble glycogen contents of A. maxima filaments adapted to variable concentrations of sodium chloride. The total sugar content increased from ∼200 to ∼500 mg/g (dry weight) of cells (∼20% to ∼50% of dry weight content) when incubated in Zarrouk's medium with an additional 0 to 1 M NaCl. Insoluble glycogen was a very small component of total sugars (<0.2% dry weight), indicating that salt stress induced an increase primarily in the cellular content of soluble sugars. Note the different y-axis scales. Data display the means ± 1 standard deviation from three measurements. DW, dry weight.