Table I. Growth rate (biomass accumulation), Glc consumption rate, and biomass composition of Arabidopsis cell suspension cultures grown under control conditions (21°C, no mannitol), at high temperature (29°C), and under hyperosmotic stress (171 mm mannitol).

All values are means ± sd from four replicates. Values indicated in boldface are significantly different (Student’s t test, P < 0.05) from the corresponding value for control cells.

Parameter	Control	29°C	Hyperosmotic
Biomass (g dry wt d−1 L−1 culture)	2.3 ± 0.1	0.8 ± 0.1	0.9 ± 0.2
Glc consumption (g d−1 L−1 culture)	4.1 ± 0.2	3.3 ± 0.1	1.6 ± 0.5
Biomass composition (%)
Cell wall	43 ± 5	35 ± 2	55 ± 2
Protein	20 ± 2	16 ± 3	28 ± 4
Lipid	11 ± 2	10 ± 1	11 ± 2
Starch	5 ± 0.4	3 ± 0.4	5 ± 0.7
Soluble metabolites	14 ± 1	21 ± 1	7 ± 1