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Phylogenomics identifies an ancestral burst of gene duplications predating the diversification of aphidomorpha

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dc.contributor.author Julca, Irene
dc.contributor.author Marcet Houben, Marina
dc.contributor.author Cruz, Fernando
dc.contributor.author Vargas-Chavez, Carlos
dc.contributor.author Johnston, John Spencer
dc.contributor.author Gómez Garrido, Jèssica
dc.contributor.author Frias, Leonor
dc.contributor.author Corvelo, André
dc.contributor.author Loska, Damian
dc.contributor.author Cámara, Francisco
dc.contributor.author Gut, Marta
dc.contributor.author Alioto, Tyler
dc.contributor.author Latorre, Amparo
dc.contributor.author Gabaldón Estevan, Juan Antonio, 1973-
dc.date.accessioned 2020-05-11T10:31:55Z
dc.date.available 2020-05-11T10:31:55Z
dc.date.issued 2020
dc.identifier.citation Julca I, Marcet-Houben M, Cruz F, Vargas-Chavez C, Johnston JS, Gómez-Garrido J et al. Phylogenomics identifies an ancestral burst of gene duplications predating the diversification of aphidomorpha. Mol Biol Evol. 2020 Mar 1; 37(3): 730-756. DOI: 10.1093/molbev/msz261
dc.identifier.issn 0737-4038
dc.identifier.uri http://hdl.handle.net/10230/44483
dc.description.abstract Aphids (Aphidoidea) are a diverse group of hemipteran insects that feed on plant phloem sap. A common finding in studies of aphid genomes is the presence of a large number of duplicated genes. However, when these duplications occurred remains unclear, partly due to the high relatedness of sequenced species. To better understand the origin of aphid duplications we sequenced and assembled the genome of Cinara cedri, an early branching lineage (Lachninae) of the Aphididae family. We performed a phylogenomic comparison of this genome with 20 other sequenced genomes, including the available genomes of five other aphids, along with the transcriptomes of two species belonging to Adelgidae (a closely related clade to the aphids) and Coccoidea. We found that gene duplication has been pervasive throughout the evolution of aphids, including many parallel waves of recent, species-specific duplications. Most notably, we identified a consistent set of very ancestral duplications, originating from a large-scale gene duplication predating the diversification of Aphidomorpha (comprising aphids, phylloxerids, and adelgids). Genes duplicated in this ancestral wave are enriched in functions related to traits shared by Aphidomorpha, such as association with endosymbionts, and adaptation to plant defenses and phloem-sap-based diet. The ancestral nature of this duplication wave (106-227 Ma) and the lack of sufficiently conserved synteny make it difficult to conclude whether it originated from a whole-genome duplication event or, alternatively, from a burst of large-scale segmental duplications. Genome sequencing of other aphid species belonging to different Aphidomorpha and related lineages may clarify these findings.
dc.description.sponsorship This research was funded by European Regional Development Fund (ERDF) and Ministerio de Economía y Competitividad (Spain) (Grant Nos. PGC2018-099344-B-100 and BFU2015-67107). T.G. group also acknowledges support from the Catalan Research Agency (AGAUR) SGR857, and grants from the European Union’s Horizon 2020 research and innovation program under the grant agreements ERC-2016-724173 and MSC-747607. T.G. also receives support from an INB (Grant No. PT17/0009/0023—ISCIII-SGEFI/ERDF). The genome, annotation and sequencing reads have been deposited at the European Nucleotide Archive (ENA) under the project accession PRJEB33415
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Oxford University Press
dc.rights © 2019 by Irene Julca et al. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited
dc.rights.uri http://creativecommons.org/licenses/by-nc/4.0/
dc.subject.other Filogènia
dc.subject.other Afidomorfa
dc.subject.other Genòmica
dc.title Phylogenomics identifies an ancestral burst of gene duplications predating the diversification of aphidomorpha
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1093/molbev/msz261
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/724173
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/747607
dc.relation.projectID info:eu-repo/grantAgreement/ES/1PE/BFU2015-67107
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion

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