Characterization and phylogenetic analysis of the complete mitogenome of Allactaga sibirica (Rodentia: Dipodidae)

Allactaga sibirica (Dipodidae) is widely distributed in the northwestern arid regions of China. The complete mitochondrial genome (mitogenome) of A. sibirica was 16,685 bp in length; included 13 protein-coding genes, 2 ribosome genes, 22 tRNA genes, and one control region; and had a structure that was typical of vertebrates. The base composition and codon usage of the mitogenome are described, and the structure of the non-coding sequence in the A. sibirica is reported for the first time. The putative origin of replication for the light strand of A. sibirica was approximately 45 bp long, and was highly conserved in the stem-loop and adjacent sequences. Phylogenetic analyses showed high resolution in each of the main divergent clades within Dipodoidea using mitogenomes data. The results indicated that the Zapodidae group was a representative of very basal taxon in Dipodoidea, and shared a common ancestor with Dipodidae species. Within Dipodidae clade, Allactaginae species was at basal position, and this result was in line with previous molecular systematic and morphological studies. Furthermore, Euchoreutes naso and A. sibirica had a close relationship could implicate a sister-group relationship between Euchoreutinae and Allactaginae. Meanwhile, this work also provided a set of useful data on phylogeny and molecular evolution in Dipodidae species.