Figure 1. Isolation of a high-light-tolerant cyanobacteria.

(A) Cross-sectional negative stained image of C. aponinum fixed in acrylic medium. (B) Phylogenetic analysis based on C. aponinum 16 S rRNA. Evolutionary analyses were conducted in MEGA7. (C) Serial dilutions of Synechocystis and C. aponinum on BG11 plates. Cells were serially diluted in ¼ steps and incubated at 30°C for 5 days (light intensities > 370 µmol photons m^–2s^–1) and 10 days (light intensity = 50 µmol photons m^–2s^–1) (D) in vivo absorption spectra (normalized to the max wavelength of the Q_y transition) of C. aponinum cells grown in low light (45 µmol photons m^–2s^–1) and high light (450 µmol photons m^–2s^–1). (E) 77 K fluorescence spectra (normalized to the max emission wavelength) of whole cells excited at 440 nm.