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      https://www.ias.ac.in/article/fulltext/jgen/093/03/0699-0707

    • Keywords

       

      Emberizidae; Passeriformes; mitochondrial genome; phylogenetics; rate heterogeneity; Emberiza chrysophrys.

    • Abstract

       

      Mitochondrial genomes have proved to be powerful tools in resolving phylogenetic relationships. Emberiza chrysophrys (least concern species: IUCN 2013) is a passerine bird in the bunting family, Emberizidae. The complete mitochondrial genome of E. chrysophrys was sequenced. This circular mitochondrial genome was 16,803 bp in length, with an A+T content of 52.26%, containing 13 protein-coding genes (PCGs), two rRNAs, 22 tRNAs and a putative control region (CR). The CR of E. chrysophrys was divided into three conserved domains. Six conserved sequence boxes in the central conserved domain II were identified as F, E, D, C, b and B. An obvious positive AT-skew and negative GC-skew bias were found for all 28 genes encoded by the H strand, whereas it was the reverse in the remaining nine genes encoded by the L strand. Remarkable rate heterogeneity was present in the mitochondrial genome of E. chrysophrys. Notably, unusual slow rate of evolution in the mitochondrial CR of E. chrysophrys was detected, which is rarely seen in other birds. Phylogenetic analyses were carried out based on 13 PCGs that showed E. pusilla was the sister group of E. rustica, and the monophyly of Emberiza was established.

    • Author Affiliations

       

      Qiongqiong Ren1 Jian Yuan1 Liqian Ren2 Liqin Zhang1 Lei Zhang1 Lan Jiang1 Dongsheng Chen3 Xianzhao Kan1 3 Baowei Zhang2

      1. The Institute of Bioinformatics, College of Life Sciences, Anhui Normal University, Wuhu 241000, People’s Republic of China
      2. School of Life Sciences, Anhui University, Hefei 230039, People’s Republic of China
      3. The Provincial Key Laboratory of the Conservation and Exploitation Research of Biological Resources in Anhui, Wuhu 241000, People’s Republic of China
    • Dates

       
  • Journal of Genetics | News

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