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Fig. 1 | BMC Biology

Fig. 1

From: Group II intron and repeat-rich red algal mitochondrial genomes demonstrate the dynamic recent history of autocatalytic RNAs

Fig. 1

Schematic comparison of red algal mitogenomes. a The characteristics of three Porphyridium mitogenomes (mitogenome size, the number of intron (IEPs), the length of LIR) are shown, when compared to other red algae. The mitochondrion genome maps in the right panel show P. purpureum CCMP1328, P. purpureum SAG1380-1a, and P. aerugineum CCMP1948 from the outside-in. Intron, CDS, exon, rRNA, and tRNA are marked in different colors in these maps (gray, yellow, black, red, and green, respectively). The phylogenetic tree in the left panel is based on a previous study [20]. b All genes with introns present in Porphyridium mitogenomes are shown. The origins of the IEPs present in each intron are represented using triangles of different colors (fungi-related: purple-colored; stramenopiles-related: orange-colored; both-related: mixed with purple- and orange-colored). The movement of the IEPs and twintrons are shown using arrows (gene-specific vertical inheritance: dotted, black-colored arrow; self-proliferation: gray-colored arrow)

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