Figure 2.

State Transitions in S. elongatus and Synechocystis.

Shown are 77 K fluorescence emission spectra of dark- (black, State II) and blue light- (red, 85 µM photons m⁻² s⁻¹, State I) adapted S. elongatus (A) and (C) and Synechocystis (B) and (D) cells. The excitation was done at 430 nm (A) and (B) and 590 nm (C) and (D). Normalization was done at 800 nm, and the spectra are the average of at least three independent biological replicates.