title: Complete plastid genome of an ecologically important brown alga Sargassum thunbergii (Fucales, Phaeophyceae).
abstract: The brown algal species Sargassum thunbergii (Fucales, Phaeophyceae) is widely distributed in coastal area of East Asia. This alga is ecologically and economically important seaweeds; however, no genome data was reported thus far. To get a better understanding of organellar genome of S. thunbergii, we sequenced and annotated its complete plastid genome. The circular plastid genome is 124,592bp in size with 30.4% GC content, which is composed of a large single-copy (LSC) region of 73,668bp, a small single-copy (SSC) region of 40,032bp, and two inverted repeat (IR) of 5446bp each. The plastid genome of S. thunbergii includes 139 protein-coding genes, six ribosomal RNA (rRNA) operons, 28 transfer RNA (tRNA) sequences, and one intron (214bp) in tRNA-Leu (trnL) gene. Five overlapping genes were identified in the compact plastid genome. Base on the comparison with previously published five brown algae plastid genomes, we found that the gene content and gene order of S. thunbergii are identical to that of other Fucales species Fucus vesiculosus.
authors.affiliation: Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Yang
authors.affiliation: Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
authors.forename: Louis
authors.initials: L
authors.lastname: Graf
authors.affiliation: Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
authors.forename: Chung Hyun
authors.initials: CH
authors.lastname: Cho
authors.affiliation: Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
authors.forename: Byung Hee
authors.initials: BH
authors.lastname: Jeon
authors.affiliation: Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
authors.forename: Jeong Ha
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea. Electronic address: hsyoon2011@skku.edu.
authors.forename: Hwan Su
authors.initials: HS
authors.lastname: Yoon
mesh_terms: D054627:Genome, Plastid; D044647:Sargassum / Q000235:genetics*; D017423:Sequence Analysis, RNA
keywords: Genome comparison; Phaeophyceae; Plastid evolution; Plastid genome; Sargassum thunbergii