Figure 2

Assessment of acquired heat tolerance in 7-day-old Col seedlings. (A-B) Seedlings were acclimated for 60 min in a range of different temperatures (23-40°C), recovered at 23°C for 120 min and heat-treated at 45°C for 20 min. (C-D) Seedlings were acclimated at 37°C for different time periods (0–75 min), recovered at 23°C for 120 min and heat-treated at 45°C for 20 min. Seedling survival was scored after a 6-day recovery period, and represented as a percentage of initial viable seedlings. Error bars represent SEM (n = 5 plates with ~25 seedlings each).