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Abstract
The complete mitochondrial DNA of tube-dwelling diatom, Berkeleya fennica was sequenced and characterized. The circular mitogenome contains 63 genes in 35,509 bp (29.7% GC), including 36 protein-coding, 25 tRNA, 2 rRNA genes. Most of the protein-coding (27) genes have usual ATG start codon, except 9 genes such as ATA for rps8; ATC for rps14; ATT for rps12 and orf51; GTG for nad5; TTA for cox3, nad4 and orf147; and TTG for cob. The nad11 and rrs are the only interrupted genes in the mitogenome. Gene content and synteny of B. fennica are very similar to Phaeodactylum tricoruntum (NC_016739). Absence of repeat region in B. fennica resulted in mitogenome size difference to P. tricoruntum. A new mitogenome will provide useful information for mitochondrial genome diversity and evolution of the diatoms.
Acknowledgements
We thank Mr. Seong Jun Chun for the sample collection.
Declaration of interest
This work was supported by grants from the Korea Institute of Ocean Science & Technology (PE99245 and PE99182) and the Basic Science Research Program through the National Research Foundation of Korea (NRF) founded by the Ministry of Science, ICT and Future Planning (NRF-2014R1A1A1006512) to ECY. The authors are responsible for the content and writing of the paper. The authors report no conflicts of interest.