title: Complete mitochondrial genome of the brown alga Sargassum fusiforme (Sargassaceae, Phaeophyceae): genome architecture and taxonomic consideration.
abstract: Sargassum fusiforme (Harvey) Setchell (=Hizikia fusiformis (Harvey) Okamura) is one of the most important economic seaweeds for mariculture in China. In this study, we present the complete mitochondrial genome of S. fusiforme. The genome is 34,696 bp in length with circular organization, encoding the standard set of three ribosomal RNA genes (rRNA), 25 transfer RNA genes (tRNA), 35 protein-coding genes, and two conserved open reading frames (ORFs). Its total AT content is 62.47%, lower than other brown algae except Pylaiella littoralis. The mitogenome carries 1571 bp of intergenic region constituting 4.53% of the genome, and 13 pairs of overlapping genes with the overlap size from 1 to 90 bp. The phylogenetic analyses based on 35 protein-coding genes reveal that S. fusiforme has a closer evolutionary relationship with Sargassum muticum than Sargassum horneri, indicating Hizikia are not distinct evolutionary entity and should be reduced to synonymy with Sargassum.
authors.affiliation: a Key Laboratory of Experimental Marine Biology , Institute of Oceanology, Chinese Academy of Sciences , Qingdao , P. R. China and.
authors.forename: Feng
authors.initials: F
authors.lastname: Liu
authors.affiliation: a Key Laboratory of Experimental Marine Biology , Institute of Oceanology, Chinese Academy of Sciences , Qingdao , P. R. China and.
authors.forename: Shaojun
authors.initials: S
authors.lastname: Pang
authors.affiliation: b Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization , Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Shanghai , P.R. China.
authors.forename: Minbo
authors.initials: M
authors.lastname: Luo
mesh_terms: D001483:Base Sequence; D019143:Evolution, Molecular; D023061:Gene Order / Q000502:physiology*; D054629:Genome, Mitochondrial / Q000502:physiology*; D024101:Mitochondrial Proteins / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012313:RNA / Q000235:genetics; D000077278:RNA, Mitochondrial; D012335:RNA, Ribosomal / Q000235:genetics; D012343:RNA, Transfer / Q000235:genetics; D044647:Sargassum / Q000145:classification* / Q000235:genetics*
chemical_list: D024101:Mitochondrial Proteins; D000077278:RNA, Mitochondrial; D012335:RNA, Ribosomal; D012313:RNA; D012343:RNA, Transfer
keywords: Hizikia fusiformis; Phaeophyceae; Sargassaceae; Sargassum fusiforme; mitochondrial genome