Abstract
In this study, we sequenced the complete mitochondrial DNA genome (mitogenome) of the Zhengyang Yellow chicken (Gallus gallus domesticus) by next-generation sequencing technology. Samples were taken from Zhumadian city, Henan Province, China. The complete mitogenome was 16 785 bp in size, and had a nucleotide composition of 30.3% (A), 23.7% (T), 32.5% (C), and 13.5% (G), with a high AT content of 54.0%. The assembled mitogenome exhibited typical mitochondrial DNA (mtDNA) structure, including a non-coding control region, two rRNA genes, 13 protein-coding genes, and 22 tRNA genes. Phylogenetic analysis indicated that this mitogenome defined a novel sub-haplogroup B3 within haplogroup B. These results should provide essential information for chicken domestication and insight into the evolution of genomes.
Highlights
(Gallus gallus domesticus) by next-generation sequencing technology
Apart from eight tRNA genes and one protein-coding gene (ND6), all other mitogenome genes were encoded on the H strand
Our results showed that the Zhengyang yellow chicken sequence was clustered with sequences belonging to haplogroup B (Figure 1)
Summary
(Gallus gallus domesticus) by next-generation sequencing technology. Samples were taken from Zhumadian city, Henan Province, China. The complete mitochondrial genome of the Zhengyang yellow chicken was 16 785 bp in length (GenBank Accession No KX987152), with a base composition of 30.3% for A, 23.7% for T, 32.5% for C, and 13.5% for G, showing a high A+T The genome contained a typical structure, including a non-coding control region (D-loop), two ribosomal RNA genes, 13 protein-coding genes, and 22 tRNA genes.
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