Signatures of mitonuclear coevolution in a warbler species complex
| Autor: | Else K. Mikkelsen, David P. L. Toews, Silu Wang, Julie A. Lee-Yaw, Darren E. Irwin, Sievert Rohwer, Madelyn J. Ore |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Mitochondrial DNA Species complex Nuclear gene Population genetics Science Speciation Population Introgression General Physics and Astronomy Biology 010603 evolutionary biology 01 natural sciences DNA Mitochondrial General Biochemistry Genetics and Molecular Biology Article Warbler Songbirds 03 medical and health sciences Genetic variation parasitic diseases Animal physiology Animals education Gene 030304 developmental biology Cell Nucleus 0303 health sciences education.field_of_study Multidisciplinary Eukaryote Haplotype Climate-change ecology Genetic Variation General Chemistry Nuclear DNA 030104 developmental biology Haplotypes Evolutionary biology Adaptation Signal Transduction |
| Zdroj: | Nature Communications Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021) |
| ISSN: | 2041-1723 |
| Popis: | Divergent mitonuclear coadaptation could facilitate speciation. We investigate this possibility in two hybridizing species of warblers, Setophaga occidentalis and S. townsendi, in western North America. Inland S. townsendi harbor distinct mitochondrial DNA haplotypes from those of S. occidentalis. These populations also differ in several nuclear DNA regions. Coastal S. townsendi demonstrate mixed mitonuclear ancestry from S. occidentalis and inland S. townsendi. Of the few highly-differentiated chromosomal regions between inland S. townsendi and S. occidentalis, a 1.2 Mb gene block on chromosome 5 is also differentiated between coastal and inland S. townsendi. Genes in this block are associated with fatty acid oxidation and energy-related signaling transduction, thus linked to mitochondrial functions. Genetic variation within this candidate gene block covaries with mitochondrial DNA and shows signatures of divergent selection. Spatial variation in mitonuclear ancestries is correlated with climatic conditions. Together, these observations suggest divergent mitonuclear coadaptation underpins cryptic differentiation in this species complex. Little is known on how mitonuclear interactions influence genomic divergence among hybrid and parental lineages. A study of hybridizing wood warbler species complex finds a nuclear gene block with mitochondrial functions coevolves with mitochondrial genome, driven by climate-associated divergent selection underlying hybrid-parental population divergence. |
| Databáze: | OpenAIRE |
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