Figure 2

Complete plastid genome maps for Dunaliella salina (middle), Chlamydomonas reinhardtii (inner), and Volvox carteri (outer). The D. salina plastid genome (this study) is 269 kb. The C. reinhardtii and V. carteri plastid genomes (GenBank accession numbers FJ423446 and GU084820) are 204.2 kb and ~525 kb, respectively. Arrows within the coding regions denote transcriptional polarities. Transfer RNA-coding regions are designated by the single-letter abbreviation of the amino acid they specify. Introns within intergenic regions are labeled with blue asterisks. Pseudogenes are labeled with a ψ. For all three genomes, the psaA gene is fragmented; the translational order of these fragments is set out using superscript numbers. The portions of the D. salina genome map that are gray (as opposed to black) highlight gene colinearity (not including introns) with either the C. reinhardtii or V. carteri plastid genomes.