Figure 4.

Accumulation of plastidial transcripts in maize cptk1. A, Representative plastidial transcripts were quantified by RT-qPCR and normalized against a set of nuclear housekeeping genes. For several genes (psaA, atpA, rpoB, psbA, and rRNA 23S) two different transcript regions were quantified. Results from the different mutant leaf sectors were compared against the corresponding leaf sectors of wild type (WT). The genes are sorted according to their physical location in the cpDNA. B, Quantification of transcript abundance in the apical section as compared to the basal section in wild-type leaves. Results are the mean ± sd of technical triplicates and are represented in a log2 scale.