454 GS FLX Titanium sequencing data were used to obtain the complete mitochondrial genome of Calliarthron tuberculosum (26,469 bp). The mitogenome contains 44 genes, including 2 ribosomal RNA, 19 transfer RNA, 5 ribosomal proteins, 1 ymf, 2 open reading frames (ORFs) and 16 genes involved in cellular respiration. The secY and rps12 are overlapped by 69 bp. rps3 and rpl16 also have a 45 bp overlapped region. Except for open reading frames near stem-loop region, the results show Calliarthron tuberculosum mtDNA has a high similarity with other Florideophyceae algae mitogenomes in gene synteny, structure and gene content. Phylogeny analysis indicates a close genetic relationship of Calliarthron tuberculosum with Sporolithon durum.
Keywords: Calliarthron tuberculosum; Florideophyceae; mtDNA.