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.2017 Sep 18;38(5):310-316.
doi: 10.24272/j.issn.2095-8137.2017.058.

Complete mitochondrial genome of the leaf muntjac (Muntiacus putaoensis) and phylogenetics of the genusMuntiacus

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Complete mitochondrial genome of the leaf muntjac (Muntiacus putaoensis) and phylogenetics of the genusMuntiacus

Guo-Gang Li et al. Zool Res..

Abstract

The leaf muntjac (Muntiacus putaoensis) is an endemic deer species found in the east trans-Himalayan region. In recent years, population numbers have decreased due to heavy hunting and habitat loss, and little genetic data exists for this species, thus our knowledge of distribution rangs and population sizes likewise remain limited. We obtained mtDNA genes and the complete mitochondrial genome sequence ofM. putaoensis using PCR, followed by direct sequencing. The complete mitogenome sequence was determined as a circular 16 349 bp mitochondrial genome, containing 13 protein-coding genes, two rRNA genes, 22 tRNA genes, and one control region, the gene composition and order of which were similar to most other vertebrates so far reported. Most mitochondrial genes, except forND6 and eight tRNAs, were encoded on the heavy strand. The overall base composition of the heavy strand was 33.1% A, 29.3% T, 24.2% C, and 13.4% G, with a strong AT bias of 62.4%. There were seven regions of gene overlap totaling 95 bp and 11 intergenic spacer regions totaling 74 bp. Phylogenetic analyses (ML and BI) among theMuntiacus genus based on the sequenced of mitogenome andND4L-ND4 supportedM. putaoensis as a member ofMuntiacus, most closely related toM. vuquangensis. However, when analyses based on cytb included two more muntjacs,M. truongsonensis was most closely related toM. putaoensis rather thanM. vuquangensis, and together withM. rooseveltorum, likely forming aM. rooseveltorum complex of the species. This study will help in the exploration of the evolutionary history and taxonomic status of the leaf muntjac, as well as its protection as a genetic resource.

Keywords: Mitogenome; Muntiacus; Muntiacus putaoensis; Phylogenetics.

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Figure 1
Figure 1
Maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees (GTR+G model) forMuntiacus based on 20 complete genomes from mitochondrial DNA
Figure 2
Figure 2
Maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees (GTR + G model) forMuntiacus based onND4L-ND4 genes (A) and cytb gene (B)
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References

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This work was supported by a grant from the Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (Y4ZK111B01)

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