The Complete Mitochondrial Genome of the Anser cygnoides Linnaeus, 1758 Breed Daozhou and Its Phylogenetic Analyses
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Swan goose breed Daozhou (Anser cygnoides Linnaeus, 1758 breed Daozhou, DZ) is one of the famous native breed of Hunan Province in China. The complete mitochondrial genome sequence plays an important role in the accurate determination of phylogenetic relationships among metazoans. It is the first time that the complete mitochondrial genome sequence of the DZ was reported, which was determined through PCR-based method. The total length of the mitogenome is 16 741 bp. It contains the typical structure, including 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes and 1 non-coding control region (D-loop region) as that of most other vertebrates. The overall composition of the mitogenome was estimated to be 30.19% for A, 22.66% for T, 32.06% for C and 15.08% for G, in the order C > A > T > G feature occurs in the DZ. Phylogenetic analyses using N-J computational algorithms showed that the analyzed 22 Anseriform species are divided into four major clades: Anatinae, Anserinae, Dendrocygninae and Anseranatidae. In addition, our work confirmed that Swan goose breed Wugangtong grey (WGTG) and DZ have a close genetic relationship with fellow tribal members Swan goose breed Wugangtong white (WGTW), Lingxian white (LXW) and Xupu (XP). In addition, Swan goose breed WGTW, XP and LXW have highly similar genetic relationship. This work will provides an important data set for the study in genetic mechanism of goose in Hunan Province.
Keywords:Anser cygnoides Swan goose breed Daozhou mitochondrial PCR-based method phylogenetic analyses
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