Figure 4. Locally collinear blocks (LCBs) analysis for 20 complete mitochondrial genomes.
The figure depicts linearized alignments identifying 18 conserved gene regions for six species of Pyropia (a–r) and two of Porphyra (s–t). Each chromosome is oriented horizontally and homologous blocks are shown as identically colored regions linked across genomes. Regions that are inverted relative to P. perforata are shifted below the genome's center axis. Sequence similarities within an LCB are proportional to the heights of interior colored bars. Large sections of white within blocks, and gaps between blocks, indicate lineage specific sequences. The analysis shows that mitochondrial genomes within populations of Py. perforata are similar in content and length, but highly variable between populations and other Pyropia. (a–l), Py. perforata, (a), LD-Ag 13037 (b), LD-Ag 13038 (c), UC 95735 (d), LD-Ag 13031 (e), LD-Ag 13032 (f), UC 2019900 (g), UC 2019901 (h), UC 2019902 (i), UC 1450590 (j), UC 807662 (k), UC 95739 (l), VK-11-00061 (m), Mumford #161 (n), UC 1863890 (o), VK-11-00121 (p), Py. haitanensis (q), Py. yezoensis (r), Py. tenera (s), Po. purpurea (t), Po. umbilicalis. The figure was drawn using Mauve 2.3.139.