FIG 4.
The relative variable fluorescence parameters (A) and JIP-test parameters (B) in Synechocystis cells at different periods after the addition of 70.4 mM (4×) NO2−. M0, the initial slope of the relative variable fluorescence curve; ψ0, the efficiency of electron transfer from QA− to QB. Values represent means or means ± SD (n = 5).