Skip to main content
. 2000 Jun;123(2):575–588. doi: 10.1104/pp.123.2.575

Figure 1.

Figure 1

A, Temperature optimum for chlorophyll accumulation in cotyledons of Arabidopsis (Columbia) seedlings. B, Challenge temperatures for 30 min that inhibit chlorophyll accumulation at 25°C in cotyledons of Arabidopsis (C24) seedlings. Chlorophyll levels determined at 24 h (▪), 48 h (●), and 72 h (♦) following the 30-min temperature challenge. C, Pre-incubation temperatures that induce acquired thermotolerance of chlorophyll accumulation in cotyledons of Arabidopsis (C24) seedlings to a previously lethal 48°C challenge. D, Duration of acquired thermotolerance for chlorophyll accumulation in cotyledons of Arabidopsis seedlings pre-incubated at 38°C for 4 h and challenged at 48°C at specified time periods. E, Effectiveness of 30-min temperature challenges on reducing the level of chlorophyll accumulation in control (●) and 4-h, 38°C pre-incubated (○) cotyledons of RLD (a) and Columbia (b) Arabidopsis seedlings. F, Time course of injury to chlorophyll accumulation in control (●) and 4-h, 38°C pre-incubated (○) cotyledons of Arabidopsis seedlings resulting from a 50°C challenge.