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学科主题: Biotechnology & Applied Microbiology ; Genetics & Heredity
题名: A novel model of double replications and random loss accounts for rearrangements in the Mitogenome of Samariscus latus (Teleostei: Pleuronectiformes)
作者: Shi, W ; Miao, XG ; Kong, XY
通讯作者: xykong@scsio.ac.cn
关键词: Flatfish ; Flounder ; Mitochondrial recombination ; Gene order ; Molecular rvolution
刊名: BMC GENOMICS
发表日期: 2014
卷: 15, 页:-352
收录类别: sci
部门归属: [Shi, Wei ; Miao, Xian-Guang ; Kong, Xiao-Yu] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: LMB
资助者: Natural Science Foundation of China [30870283, 31071890, 41206134]
摘要: Background: Although more than one thousand complete mitochondrial DNA (mtDNA) sequences have been determined in teleostean fishes, only a few gene rearrangements have been observed, and genome-scale rearrangements are even rarer. However, flatfishes (Pleuronectiformes) have been identified as having diverse types of mitochondrial gene rearrangements. It has been reported that tongue soles and the blue flounder mitogenomes exhibit different types of large-scale gene rearrangements. Results: In the present study, the complete mitochondrial genome of another flatfish, Samariscus latus, was sequenced, and genome-scale rearrangements were observed. The genomic features of this flounder are different from those of any other studied vertebrates, including flatfish species too. The mitogenome of S. latus is characterized by the duplication and translocation of the control region (CR). The genes located between the two CRs are divided into two clusters in which their relative orders are maintained. Conclusions: We propose a "Double Replications and Random Loss" model to explain the rearrangement events in S. latus mitogenome. This model consists of the following steps. First, the CR was duplicated and translocated. Subsequently, double replications of the mitogenome were successively initiated from the two CRs, leading to the duplication of the genes between the two CRs. Finally, one of each pair of duplicated genes was lost in a random event.
原文出处: 查看原文
WOS记录号: WOS:000336066900002
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10439
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Shi, W; Miao, XG; Kong, XY.A novel model of double replications and random loss accounts for rearrangements in the Mitogenome of Samariscus latus (Teleostei: Pleuronectiformes),BMC GENOMICS,2014,15():-352
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