title: Complete mitochondrial genome of the brown alga Colpomenia peregrina (Scytosiphonaceae, Phaeophyceae): genome characterization and comparative analyses.
abstract: Colpomenia peregrina Sauvageau has a biphasic, heteromorphic life history alternated with saccate gametophytes and crustose sporophytes. The circular C. peregrina mitogenome is 36,025 bp in length and encodes 66 genes, including 3 ribosomal RNA genes (rRNA), 25 transfer RNA genes (tRNA), 35 protein-coding genes, and 3 open reading frames (ORFs). It is the shortest and most compact of the sequenced Ectocarpales mitogenomes to date. The overall A + T content in C. peregrina mitogenome is 68.01%, higher than that of other reported Ectocarpales species (62.01-66.49%). The total intergenic spacers are 1499 bp, constituting 4.16% of the whole genome. Genome organization of C. peregrina is essentially identical to that of known Ectocarpales species, except for Pylaiella littoralis. Phylogenetic analyses based on 35 protein-coding genes show that Scytosiphon lomentaria and Petalonia fascia firstly cluster together, and then group with C. peregrina forming the Scytosiphon-Petalonia-Colpomenia subclade with high support values, indicating their close evolutionary relationships.
authors.affiliation: a Key Laboratory of Experimental Marine Biology , Institute of Oceanology, Chinese Academy of Sciences , Qingdao , P.R. China.
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.
authors.forename: Shaojun
authors.initials: S
authors.lastname: Pang
authors.affiliation: a Key Laboratory of Experimental Marine Biology , Institute of Oceanology, Chinese Academy of Sciences , Qingdao , P.R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: a Key Laboratory of Experimental Marine Biology , Institute of Oceanology, Chinese Academy of Sciences , Qingdao , P.R. China.
authors.forename: Xia
authors.initials: X
authors.lastname: Li
mesh_terms: D055028:Comparative Genomic Hybridization; D004272:DNA, Mitochondrial / Q000737:chemistry / Q000145:classification / Q000235:genetics; D030541:Databases, Genetic; D054629:Genome, Mitochondrial; D016366:Open Reading Frames / Q000235:genetics; D000459:Phaeophyceae / Q000145:classification / Q000235:genetics*; D010802:Phylogeny; D012335:RNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D012343:RNA, Transfer / Q000737:chemistry / Q000235:genetics
chemical_list: D004272:DNA, Mitochondrial; D012335:RNA, Ribosomal; D012343:RNA, Transfer
keywords: Brown alga; Colpomenia peregrina; Phaeophyceae; Scytosiphonaceae; mitochondrial genome