Refereed journal article or data article (A1)

Bringing to light nuclear-mitochondrial insertions in the genomes of nocturnal predatory birds

List of AuthorsBaltazar-Soares Miguel, Karell Patrik, Wright Dominic, Nilsson Jan-Åke, Brommer Jon E

PublisherAcademic Press

Publication year2023

JournalMolecular Phylogenetics and Evolution

Journal name in sourceMolecular phylogenetics and evolution

Journal acronymMol Phylogenet Evol

Article number107722

Volume number181





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Mito-nuclear insertions, or NUMTs, relate to genetic material of mitochondrial origin that have been transferred to the nuclear DNA molecule. The increasing amounts of genomic data currently being produced presents an opportunity to investigate this type of patterns in genome evolution of non-model organisms. Identifying NUMTs across a range of closely related taxa allows one to generalize patterns of insertion and maintenance in autosomes, which is ultimately relevant to the understanding of genome biology and evolution. Here we collected existing pairwise genome-mitogenome data of the order Strigiformes, a group that includes all the nocturnal bird predators. We identified NUMTs by applying percent similarity thresholds after blasting mitochondrial genomes against nuclear genome assemblies. We identified NUMTsin all genomes with numbers ranging from 4 in Bubo bubo to 24 in Ciccaba nigrolineata. Statistical analyses revealed NUMT size to negatively correlate with NUMT's sequence similarity to with original mtDNA region. Lastly, characterizing these nuclear insertions of mitochondrial origin in a comparative genomics framework produced variable phylogenetic patterns, suggesting in some cases that insertions might pre-date speciation events within Strigiformes.

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Last updated on 2023-06-02 at 08:26