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KMID : 0381120110330030307
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Genes and Genomics
2011 Volume.33 No. 3 p.307 ~ p.312
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Complete mitogenome sequence of the Chinese medaka Oryzias sinensis (Teleostei: Beloniformes) and its phylogenetic analysis
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Yoon Moon-Geun
Kim Keun-Yong
Bang In-Chul
Nam Yoon-Kwon
Kim Dong-Soo
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Abstract
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Chinese medaka Oryzias sinensis (Teleostei: Beloniformes) is distributed in China and the western areas of Korea. It differs from the Japanese medaka O. latipes in its morphology and biogeographical distribution in Korea. In this study, we analyzed the complete nucleotide sequence of the mitochondrial genome (mitogenome) of O. sinensis and determined its genomic structure. The complete mitogenome is a circular molecule of 16,654 bp and its structural organization is conserved across diverse vertebrate taxa. On a phylogenetic tree inferred from the nucleotide matrix, partitioned into four regions (i.e., the first and second codon positions of protein-coding genes, and the ribosomal RNA and transfer RNA genes), O. sinensis clustered consistently with O. latipes specimens from China and Korea, with a relatively short branch length, but was separated from O. latipes specimen from Japan. Our findings will allow the resolution of the taxonomic problems of closely related Oryzias species, such as O. sinensis and O. latipes in a future study.
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KEYWORD
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Mitogenome, Oryzias latipes, O. sinensis, phylogeny
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