Comparative Mitogenomics of the Genus Sebastes (Scorpaenidae, Scorpaeniformes) Revealed Conserved Gene Rearrangement and High Sequence Variations

Title
Comparative Mitogenomics of the Genus Sebastes (Scorpaenidae, Scorpaeniformes) Revealed Conserved Gene Rearrangement and High Sequence Variations
Author(s)
장요순; 황선완; 이은경; 김성
KIOST Author(s)
Hwang, Sunwan(황선완)Lee, Eun Kyung(이은경)Kim, Sung(김성)
Publication Year
2017-05-18
Abstract
To understand the molecular evolution of mitochondrial genomes in the genus Sebastes, the mitogenome of Sebastes taczanowskii was sequenced and compared with those of another ten Sebastes species. The complete mitogenome of S. taczanowskii was a circular molecule of 16,452 bp containing 13 protein-coding genes (PCGs), 2 ribosomal RNA genes, 22 transfer RNA genes and a control region. The positive AT skew (0.023) indicated the occurrence of more As than Ts. The arrangement of 13 PCGs was similar to that of other sequenced rockfishes. All PCGs were initiated by ATG codons, except for the cytochrome c oxidase subunit 1 (cox1) gene, which was initiated by the GTG sequence, as observed in other rockfishes. Our results displayed similar mitogenome features among species in genome organization, base composition, codon usage, and gene rearrangement. The identical gene rearrangement of trnH-trnS-trnL tRNA cluster observed in mitogenomes of these fourteen closely related rockfishes suggests that this unique gene order is conserved within Sebastes. These mitogenomes exhibit a high level of sequence variation, mainly due to the differences of corresponding intergenic sequences in gene rearrangement regions and the heterogeneity of tandem repeats in the control regions.ii was a circular molecule of 16,452 bp containing 13 protein-coding genes (PCGs), 2 ribosomal RNA genes, 22 transfer RNA genes and a control region. The positive AT skew (0.023) indicated the occurrence of more As than Ts. The arrangement of 13 PCGs was similar to that of other sequenced rockfishes. All PCGs were initiated by ATG codons, except for the cytochrome c oxidase subunit 1 (cox1) gene, which was initiated by the GTG sequence, as observed in other rockfishes. Our results displayed similar mitogenome features among species in genome organization, base composition, codon usage, and gene rearrangement. The identical gene rearrangement of trnH-trnS-trnL tRNA cluster observed in mitogenomes of these fourteen closely related rockfishes suggests that this unique gene order is conserved within Sebastes. These mitogenomes exhibit a high level of sequence variation, mainly due to the differences of corresponding intergenic sequences in gene rearrangement regions and the heterogeneity of tandem repeats in the control regions.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23971
Bibliographic Citation
2017년 한국어류학회 춘계 학술발표대회, pp.94, 2017
Publisher
한국어류학회
Type
Conference
Language
English
Publisher
한국어류학회
Related Researcher
Research Interests

Fish ecology,Eggs & larval fish identification,어류 생태연구,난자치어 형태분류

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse