Ancient Polyploidy and Genome Evolution in Palms

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dc.contributor.authorBarrett, Craig F.
dc.contributor.authorMcKain, Michael R.
dc.contributor.authorSinn, Brandon T.
dc.contributor.authorGe, Xue-Jun
dc.contributor.authorZhang, Yuqu
dc.contributor.authorAntonelli, Alexandre
dc.contributor.authorBacon, Christine D.
dc.contributor.otherWest Virginia University
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherChinese Academy of Sciences
dc.contributor.otherSouth China Botanical Garden, CAS
dc.contributor.otherUniversity of Gothenburg
dc.contributor.otherRoyal Botanic Gardens, Kew
dc.date.accessioned2023-10-02T15:16:22Z
dc.date.available2023-10-02T15:16:22Z
dc.date.issued2019
dc.description.abstractMechanisms of genome evolution are fundamental to our understanding of adaptation and the generation and maintenance of biodiversity, yet genome dynamics are still poorly characterized in many clades. Strong correlations between variation in genomic attributes and species diversity across the plant tree of life suggest that polyploidy or other mechanisms of genome size change confer selective advantages due to the introduction of genomic novelty. Palms (order Arecales, family Arecaceae) are diverse, widespread, and dominant in tropical ecosystems, yet little is known about genome evolution in this ecologically and economically important clade. Here, we take a phylogenetic comparative approach to investigate palm genome dynamics using genomic and transcriptomic data in combination with a recent, densely sampled, phylogenetic tree. We find conclusive evidence of a paleopolyploid event shared by the ancestor of palms but not with the sister clade, Dasypogonales. We find evidence of incremental chromosome number change in the palms as opposed to one of recurrent polyploidy. We find strong phylogenetic signal in chromosome number, but no signal in genome size, and further no correlation between the two when correcting for phylogenetic relationships. Palms thus add to a growing number of diverse, ecologically successful clades with evidence of whole-genome duplication, sister to a species-poor clade with no evidence of such an event. Disentangling the causes of genome size variation in palms moves us closer to understanding the genomic conditions facilitating adaptive radiation and ecological dominance in an evolutionarily successful, emblematic tropical clade.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationBarrett, C. F., McKain, M. R., Sinn, B. T., Ge, X.-J., Zhang, Y., Antonelli, A., & Bacon, C. D. (2019). Ancient Polyploidy and Genome Evolution in Palms. In S.-M. Chaw (Ed.), Genome Biology and Evolution (Vol. 11, Issue 5, pp. 1501–1511). Oxford University Press (OUP). https://doi.org/10.1093/gbe/evz092
dc.identifier.doi10.1093/gbe/evz092
dc.identifier.orcidhttps://orcid.org/0000-0003-1842-9297
dc.identifier.orcidhttps://orcid.org/0000-0003-2341-2705
dc.identifier.orcidhttps://orcid.org/0000-0003-1842-9297
dc.identifier.orcidhttps://orcid.org/0000-0002-5008-9475
dc.identifier.orcidhttps://orcid.org/0000-0002-5596-6895
dc.identifier.urihttps://ir.ua.edu/handle/123456789/12554
dc.languageEnglish
dc.language.isoen_US
dc.publisherOxford University Press
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectArecaceae
dc.subjectArecales
dc.subjectchromosome
dc.subjectdysploidy
dc.subjectgenome duplication
dc.subjectgenome size
dc.subjectCHROMOSOME-NUMBER EVOLUTION
dc.subjectPHYLOGENETIC ANALYSIS
dc.subjectGENE DUPLICATION
dc.subjectPLASTID GENOMES
dc.subjectSIZE VARIATION
dc.subjectSEQUENCE
dc.subjectDIVERSIFICATION
dc.subjectDNA
dc.subjectARECACEAE
dc.subjectPLANTS
dc.subjectEvolutionary Biology
dc.subjectGenetics & Heredity
dc.titleAncient Polyploidy and Genome Evolution in Palmsen_US
dc.typeArticle
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