Raw spectra recorded by 77 K spectroscopy.

77 K fluorescence spectra from C. reinhardtii (A), N. oceanica (B) and P. tricornutum (C) recorded after exposure to high light (A, B, C), exposure to high light in the presence of DCMU (A', B', C') and during oxygen-depletion in the dark (A'', B'', C'') using a 435 nm LED for excitation. All spectra have been baseline-corrected and normalized to the peak wavelength of PSI in each species.