Complete mitochondrial genome of biraphid benthic diatom, Navicula ramosissima (Naviculales, Bacillariophyceae)

Sung Min An; Jae Hoon Noh; Hyee Ryun Lee; Dong Han Choi; Jung Ho Lee; Eun Chan Yang

doi:10.1080/23802359.2016.1198997

Complete mitochondrial genome of biraphid benthic diatom, Navicula ramosissima (Naviculales, Bacillariophyceae)

Mitochondrial DNA B Resour. 2016 Jul 23;1(1):549-550. doi: 10.1080/23802359.2016.1198997.

Authors

Sung Min An¹, Jae Hoon Noh¹, Hyee Ryun Lee¹, Dong Han Choi¹, Jung Ho Lee², Eun Chan Yang¹

Affiliations

¹ Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology, Ansan, Korea.
² Department of Biology Education, Daegu University, Gyeongsan, Korea.

Abstract

The complete mitochondrial DNA of biraphid benthic diatom, Navicula ramosissima TA439 was sequenced and characterized. The circular mitogenome contains 67 genes in 48,652 bp (31.1% GC), including 41 protein-coding, 24 transfer RNA (tRNA) and 2 rRNA genes. Twenty-four protein-coding sequences (CDS, 59%) have start with ATG codon and 17 CDS start with alternatives such as ATA (5), ATT (6), TTA (5) and TTG (1). The GC content of tRNA genes (42.1%) is relatively higher than those of the rRNA (35.2%) and CDS (30.5%). Three genes are consisted of multiple exons and introns, i.e. cox1 (three exons, two introns), rps11 (two exons, one intron), rrl (four exons, three introns). Phylogeny of diatoms based on mitogenome data (34 CDS, 8530 amino acids combined) supports the monophyly of Naviculales, including N. ramosissima (Naviculaceae), Berkeleya fennica (Berkeleyaceae), Fistulifera solaris (Stauroneidaceae) and Phaeodactylum tricornutum (Phaeodactylaceae). Mitogenome data may be useful for phylogenetic study of the diatoms and stramenopiles.

Keywords: Diatoms; Navicula romosissima TA439; Naviculales; mitochondrial genome.