Figure 5.

Turnover of Ci-responsive CCM-related transcripts in Synechococcus cells. Exponentially growing high-Ci cells were swapped to CO₂-free air equilibrated buffer, bubbled with CO₂-free air for 30 min, and then swapped again to either CO₂-free air or 1.7% CO₂ in the presence or absence of 200 μg mL^-1 rifampicin (RIF). The relative abundance of cmpA, cmpR, ccmM, and psbAII at various time points was determined by real-time PCR. Symbols represent the abundance of transcripts at each time point as a percentage of the initial 30-min, low-Ci-induced amount (set at 100%) ± se for three separate measurements.