Fig. 7.

Time-course of NPQ of isolated thylakoids during illumination with 1.000 μmol m⁻² s⁻¹ for 25 min in the presence of 30 mM ascorbate and 2 mM FeCN (HL). 3 mM DTT was used to inhibit DD de-epoxidation (HL + DTT). The illumination was performed at room temperature with a Chl concentration of 10 μg mL⁻¹. NPQ is calculated as (F_m/F_{m ′}-1). The measurements were done with three independent thylakoid preparations, Fig. 7 shows a representative measurement