Figure 4.

In vivo measurements of the relative redox state of P₇₀₀. Detached plant leaves from wild type both untreated (A) and treated with the inhibitor DCMU (B) and treated with the inhibitor DBMIB (C) in Arabidopsis were dark adapted for 20 min prior to the measurement of the oxidation of P₇₀₀. The steady-state oxidation of P₇₀₀ (ΔA₈₂₀/A₈₂₀) was estimated for plants grown at 25°C (D) and 5°C (E) after the FR light was turned on (FR ON) and the P₇₀₀ transients were followed after application of the ST and MT flashes of white light. Letters represent statistically significant differences between means at the 95% confidence interval.