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dc.contributor.authorKenny, Nathan J.
dc.contributor.authorPlese, Bruna
dc.contributor.authorRiesgo, Ana
dc.contributor.authorItskovich, Valeria B.
dc.date.accessioned2019-08-08T13:07:20Z
dc.date.available2019-08-08T13:07:20Z
dc.date.issued2019-06-27
dc.date.submitted2019-08-08
dc.identifier.citationNathan J Kenny, Bruna Plese, Ana Riesgo, Valeria B Itskovich, Symbiosis, Selection, and Novelty: Freshwater Adaptation in the Unique Sponges of Lake Baikal, Molecular Biology and Evolution, , msz151, https://doi.org/10.1093/molbev/msz151en_US
dc.identifier.issnISSN 0737-4038
dc.identifier.doi10.1093/molbev/msz151
dc.identifier.urihttp://hdl.handle.net/10141/622552
dc.description.abstractFreshwater sponges (Spongillida) are a unique lineage of demosponges that secondarily colonized lakes and rivers and are now found ubiquitously in these ecosystems. They developed specific adaptations to freshwater systems, including the ability to survive extreme thermal ranges, long-lasting dessication, anoxia, and resistance to a variety of pollutants. Although spongillids have colonized all freshwater systems, the family Lubomirskiidae is endemic to Lake Baikal and plays a range of key roles in this ecosystem. Our work compares the genomic content and microbiome of individuals of three species of the Lubomirskiidae, providing hypotheses for how molecular evolution has allowed them to adapt to their unique environments. We have sequenced deep (>92% of the metazoan “Benchmarking Universal Single-Copy Orthologs” [BUSCO] set) transcriptomes from three species of Lubomirskiidae and a draft genome resource for Lubomirskia baikalensis. We note Baikal sponges contain unicellular algal and bacterial symbionts, as well as the dinoflagellate Gyrodinium. We investigated molecular evolution, gene duplication, and novelty in freshwater sponges compared with marine lineages. Sixty one orthogroups have consilient evidence of positive selection. Transporters (e.g., zinc transporter-2), transcription factors (aristaless-related homeobox), and structural proteins (e.g. actin-3), alongside other genes, are under strong evolutionary pressure in freshwater, with duplication driving novelty across the Spongillida, but especially in the Lubomirskiidae. This addition to knowledge of freshwater sponge genetics provides a range of tools for understanding the molecular biology and, in the future, the ecology (e.g., colonization and migration patterns) of these key species.en_US
dc.language.isoenen_US
dc.publisherOxford Academicen_US
dc.rightsopenAccessen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/us/*
dc.titleSymbiosis, Selection, and Novelty: Freshwater Adaptation in the Unique Sponges of Lake Baikalen_US
dc.typeJournal Articleen_US
dc.identifier.eissnISSN 1537-1719
dc.identifier.journalMolecular Biology and Evolutionen_US
dc.description.nhm© The Author(s) 2019. 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. For commercial re-use, please contact journals.permissions@oup.com. The file attached is the published pdf.en_US
dc.subject.nhmLake Baikalen_US
dc.subject.nhmspongesen_US
dc.subject.nhmPoriferaen_US
dc.subject.nhmtranscriptomeen_US
dc.subject.nhmgenomeen_US
dc.subject.nhmsymbiosisen_US
dc.subject.nhmfreshwateren_US
refterms.dateFOA2019-08-08T13:07:20Z


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