气候变化领域集成服务门户(CCPortal): Fossilized cell structures identify an ancient origin for the teleost whole-genome duplication

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DOI	10.1073/pnas.2101780118
	Fossilized cell structures identify an ancient origin for the teleost whole-genome duplication
	Davesne D.; Friedman M.; Schmitt A.D.; Fernandez V.; Carnevale G.; Ahlberg P.E.; Sanchez S.; Benson R.B.J.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:30
英文摘要	Teleost fishes comprise one-half of all vertebrate species and possess a duplicated genome. This whole-genome duplication (WGD) occurred on the teleost stem lineage in an ancient common ancestor of all living teleosts and is hypothesized as a trigger of their exceptional evolutionary radiation. Genomic and phylogenetic data indicate that WGD occurred in the Mesozoic after the divergence of teleosts from their closest living relatives but before the origin of the extant teleost groups. However, these approaches cannot pinpoint WGD among the many extinct groups that populate this 50- to 100-million-y lineage, preventing tests of the evolutionary effects of WGD. We infer patterns of genome size evolution in fossil stem-group teleosts using high-resolution synchrotron X-ray tomography to measure the bone cell volumes, which correlate with genome size in living species. Our findings indicate that WGD occurred very early on the teleost stem lineage and that all extinct stem-group teleosts known so far possessed duplicated genomes. WGD therefore predates both the origin of proposed key innovations of the teleost skeleton and the onset of substantial morphological diversification in the clade. Moreover, the early occurrence of WGD allowed considerable time for postduplication reorganization prior to the origin of the teleost crown group. This suggests at most an indirect link between WGD and evolutionary success, with broad implications for the relationship between genomic architecture and large-scale evolutionary patterns in the vertebrate Tree of Life. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Genome duplication; Genome evolution; Osteocytes; Paleogenomics; Teleostei
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238676
作者单位	Department of Earth Sciences, University of Oxford, Oxford, OX1 3AN, United Kingdom; Institut de Systématique, Évolution, Biodiversité, UMR 7205, Muséum national d’Histoire naturelle, Paris, 75005, France; Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Berlin, 10115, Germany; Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109, United States; Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, United States; Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom; European Synchrotron Radiation Facility, Grenoble, 38000, France; Imaging and Analysis Centre, Natural History Museum, London, SW7 5BD, United Kingdom; Dipartimento di Scienze della Terra, Università degli Studi di Torino, Turin, 10125, Italy; Subdepartment of Evolution and Development, Department of Organismal Biology, Uppsala University, Uppsala, 752 36, Sweden
推荐引用方式 GB/T 7714	Davesne D.,Friedman M.,Schmitt A.D.,et al. Fossilized cell structures identify an ancient origin for the teleost whole-genome duplication[J],2021,118(30).
APA	Davesne D..,Friedman M..,Schmitt A.D..,Fernandez V..,Carnevale G..,...&Benson R.B.J..(2021).Fossilized cell structures identify an ancient origin for the teleost whole-genome duplication.Proceedings of the National Academy of Sciences of the United States of America,118(30).
MLA	Davesne D.,et al."Fossilized cell structures identify an ancient origin for the teleost whole-genome duplication".Proceedings of the National Academy of Sciences of the United States of America 118.30(2021).