Novel Gene Rearrangement in the Mitochondrial Genome of Three Garra and Insights Into the Phylogenetic Relationships of Labeoninae
文献类型： 外文期刊
作者： Zhang, Chi 1 ; Zhang, Kun 2 ; Peng, Ying 2 ; Zhou, Jianshe 1 ; Liu, Yifan 2 ; Liu, Bingjian 2 ;
作者机构： 1.Tibet Acad Agr & Anim Husb Sci, Inst Fisheries Sci, Lhasa, Peoples R China
2.Zhejiang Ocean Univ, Natl Engn Lab Marine Germplasm Resources Explorat, Zhoushan, Peoples R China
关键词： Garra; gene rearrangement; complete mtDNA sequence; Labeoninae; phylogeny
期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.772； 五年影响因子：4.933 ）
ISSN：
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Complete mitochondrial genomes (mitogenomes) can provide valuable information for phylogenetic relationships, gene rearrangement, and molecular evolution. Here, we report the mitochondrial whole genomes of three Garra species and explore the mechanisms of rearrangements that occur in their mitochondrial genomes. The lengths of the mitogenomes' sequences of Garra dengba, Garra tibetana, and Garra yajiangensis were 16,876, 16,861, and 16,835, respectively. They contained 13 protein-coding genes, two ribosomal RNAs, 22 transfer RNA genes, and two identical control regions (CRs). The mitochondrial genomes of three Garra species were rearranged compared to other fish mitochondrial genomes. The tRNA-Thr, tRNA-Pro and CR (T-P-CR) genes undergo replication followed by random loss of the tRNA-Thr and tRNA-Pro genes to form tRNA-Thr, CR1, tRNA-Pro and CR2 (T-CR-P-CR). Tandem duplication and random loss best explain this mitochondrial gene rearrangement. These results provide a foundation for future characterization of the mitochondrial gene arrangement of Labeoninae and further phylogenetic studies.
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