The complete mitogenome of ‘Fujian’: an important Saccharina japonica cultivar of South China

In this work, complete mitogenome of Saccharina japonica cultivar ‘Fujian’ was reported. It had circular mapping organization with the length of 37,638 bp and encoded 66 genes including three rRNAs, 25 tRNAs, 35 known proteins, and three ORFs. Gene arrangement and component were conserved in those reported Saccharina species and cultivars. Only 33 nucleotide substitutions were found according to the total alignment of S. japonica and ‘Fujian’. The intergenic region of 19 nucleotides which is located between rps3 and rps9 in S. japonica mitogenome was not detected in ‘Fujian’. Phylogenetic analysis showed that ‘Fujian’ had a closer relationship with S. japonica and cultivar ‘Rongfu’ which strongly supported its genetic origin and phylogenetic relationship of Chinese Saccharina cultivars.