Congruence between nuclear and mitochondrial DNA: Combination of multiple nuclear introns resolves a well-supported phylogeny of New World orioles (Icterus)

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dc.contributor.authorJacobsen, Frode
dc.contributor.authorFriedman, Nicholas R.
dc.contributor.authorOmland, Kevin E.
dc.date.accessioned2018-10-16T13:28:31Z
dc.date.available2018-10-16T13:28:31Z
dc.date.issued2010-07
dc.description.abstractDarwin’s vision of a “Tree of Life” showing evolutionary relationships among all extant species seems an increasingly feasible goal, at least for vertebrate animals. However, virtually all published molecular phylogenies for closely related animals are based on a single locus – maternally inherited mitochondrial DNA. New approaches using multiple nuclear loci are needed to test published trees and better resolve the twigs of the entire tree of life. Here we use New World orioles (Icterus) to test an approach based on combined analysis of six independent Z chromosome introns. Combined analysis of multiple introns using traditional phylogenetic methods resolved a well-supported species phylogeny of New World orioles. In fact, all major lineages of orioles and several sub-clades that are well-supported by previously published mtDNA data are also strongly supported by the combined nuclear Z-intron tree. The male-biased Z-intron tree presented here is overwhelmingly congruent with the female-exclusive mtDNA tree. A slow rate of mutation relative to mtDNA resulted in generally poorly resolved gene trees when intron loci were analyzed separately. However, strong phylogenetic signal for all but the most recent divergences emerged once multiple loci were concatenated and analyzed in combination. Although there clearly are conditions under which concatenation analysis of nuclear DNA can be misleading, the congruence between mitochondrial and nuclear estimates of the Icterus phylogeny suggests that concatenation remains a powerful tool for inferring phylogenetic relationships for all but very recent divergences.en_US
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S105579031000148X?via%3Dihuben_US
dc.format.extent9 pagesen_US
dc.genreJournal Articleen_US
dc.identifierdoi:10.13016/M27M0442F
dc.identifier.citationFrode Jacobsen, Nicholas R. Friedman, Kevin E. Omland, Congruence between nuclear and mitochondrial DNA: Combination of multiple nuclear introns resolves a well-supported phylogeny of New World orioles (Icterus), Molecular Phylogenetics and Evolution, Vol.56, issue 1, July 2010, https://doi.org/10.1016/j.ympev.2010.03.035en_US
dc.identifier.urihttps://doi.org/10.1016/j.ympev.2010.03.035
dc.identifier.urihttp://hdl.handle.net/11603/11569
dc.language.isoen_USen_US
dc.publisherElsevier Inc.en_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Biological Sciences Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.subjectPhylogeneticsen_US
dc.subjectCytonuclear congruenceen_US
dc.subjectConcatenationen_US
dc.subjectZ chromosomeen_US
dc.subjectIntronsen_US
dc.subjectUMBC High Performance Computing Facility (HPCF)en_US
dc.subjectIcterus
dc.titleCongruence between nuclear and mitochondrial DNA: Combination of multiple nuclear introns resolves a well-supported phylogeny of New World orioles (Icterus)en_US
dc.typeTexten_US

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