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Chloroplast genomes of six Skeletonema strains (A–F) constructed in this study. Genes inside and outside of the circle are transcribed clockwise and counterclockwise, respectively. Genes belonging to different functional groups are shown in different colors. The LSC and SSC regions are separated by the inverted repeats (IRA and IRB). Dark and light gray colors in the inner circle correspond to the GC and AT content, respectively.
