Growth of the <i>Synechocystis</i> PCC 6803 strains under different light conditions.

<p>Wild type (Wt) and <i>isiA</i>^- (<i>isiA</i>^-) cells in mid-logarithmic growth phase (OD₇₃₀ ∼0.6–0.8) were diluted to an OD₇₃₀ of 0.2 with fresh BG-11 medium and incubated in LL (A), intermediate HL (IHL, B), or HL (C). The growth of the cells was monitored as a change in the optical density at 730 nm. Curves were generated by averaging the data obtained from 6 representative experiments.