Journal article
Comparative analysis of mitochondrial genomes in Bombina (Anura; Bombinatoridae)
Journal of molecular evolution, v 67(3), pp 246-256
01 Sep 2008
PMID: 18696031
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The complete mitochondrial genomes of two basal anurans, Bombina bombina and B. variegata (Anura; Bombinatoridae), were sequenced. The gene order of their mitochondrial DNA (mtDNA) is identical to that of canonical vertebrate mtDNA. In contrast, we show that there are structural differences in regulatory regions and protein coding genes between the mtDNA of these two closely related species. Corrected sequence divergence between the mtDNA of B. bombina and B. variegata amounts to 8.7% (2.3% divergence in amino acids). Comparisons with two East Asian congeners show that the control region contains two repeat regions, LV1 and LV2, present in all species except for B. bombina, in which LV2 has been secondarily lost. The rRNAs and tRNAs are characterized by low nucleotide divergence. The protein coding genes are considerably more disparate, although functional constraint is high but variable among genes, as evidenced by dN/dS ratios. A mtDNA phylogeny established the distribution of autapomorphic nonsynonomous substitutions in the mitogenomes of B. bombina and B. variegata. Nine of 98 nonsynonomous substitutions led to radical amino acid replacements that may alter mitochondrial protein function. Most radical substitutions were found in ND2, ND4, or ND5, encoding mitochondrial subunits of complex I of the electron transport system. The extensive divergence between the mitogenomes of B. bombina and B. variegata is discussed in terms of its possible role in impeding gene flow in natural hybrid zones between these two species.
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Details
- Title
- Comparative analysis of mitochondrial genomes in Bombina (Anura; Bombinatoridae)
- Creators
- Maciej Pabijan - Jagiellonian UniversityChristina Spolsky - Academy of Natural Sciences of Drexel UniversityThomas Uzzell - Academy of Natural Sciences of Drexel UniversityJacek M. Szymura - Jagiellonian University
- Publication Details
- Journal of molecular evolution, v 67(3), pp 246-256
- Publisher
- Springer Nature
- Number of pages
- 11
- Grant note
- 2PO4C 087 29 / American Philosophical Society
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000259127300002
- Scopus ID
- 2-s2.0-51749093550
- Other Identifier
- 991019350681404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Biochemistry & Molecular Biology
- Evolutionary Biology
- Genetics & Heredity