Figure 4.

Disruption of GORK activity results in increased water loss from excised rosettes. Rosettes from wild-type (●), gork-1 (○), and gork-dn1 (▿) plants grown on compost in growth chamber (21°C, 70% relative humidity, 8 h/16 h light/dark, 300 μmol⋅m⁻²⋅s⁻¹) were excised just before the end of the light period and transferred to darkness. Water loss was determined by monitoring the decrease in fresh weight of the excised rosettes. Means ±SE of six independent measurements are shown. The difference in transpiration between the wild-type and gork-1 genotypes is statistically significant (paired values, Student's t test P ≪ 0.01).