Population genomics and subgenome evolution of the allotetraploid frog Xenopus laevis in southern Africa.
| Autor: | Premachandra T; Department of Biology, McMaster University, Life Sciences Building Room 328, 1280 Main Street West, Hamilton, ON L8S4K1, Canada., Cauret CMS; Department of Biology, McMaster University, Life Sciences Building Room 328, 1280 Main Street West, Hamilton, ON L8S4K1, Canada.; Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR 97331, USA., Conradie W; Port Elizabeth Museum (Bayworld), P.O. Box 13147, Humewood, Gqeberha 6013, South Africa.; Department of Conservation Management, Natural Resource Science and Management Cluster, Faculty of Science, Nelson Mandela University, George Campus, George 6019, South Africa., Measey J; Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch 7602, South Africa., Evans BJ; Department of Biology, McMaster University, Life Sciences Building Room 328, 1280 Main Street West, Hamilton, ON L8S4K1, Canada. |
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| Jazyk: | angličtina |
| Zdroj: | G3 (Bethesda, Md.) [G3 (Bethesda)] 2023 Feb 09; Vol. 13 (2). |
| DOI: | 10.1093/g3journal/jkac325 |
| Abstrakt: | Allotetraploid genomes have two distinct genomic components called subgenomes that are derived from separate diploid ancestral species. Many genomic characteristics such as gene function, expression, recombination, and transposable element mobility may differ significantly between subgenomes. To explore the possibility that subgenome population structure and gene flow may differ as well, we examined genetic variation in an allotetraploid frog-the African clawed frog (Xenopus laevis)-over the dynamic and varied habitat of its native range in southern Africa. Using reduced representation genome sequences from 91 samples from 12 localities, we found no strong evidence that population structure and gene flow differed substantially by subgenome. We then compared patterns of population structure in the nuclear genome to the mitochondrial genome using Sanger sequences from 455 samples from 183 localities. Our results provide further resolution to the geographic distribution of mitochondrial and nuclear diversity in this species and illustrate that population structure in both genomes corresponds roughly with variation in seasonal rainfall and with the topography of southern Africa. Competing Interests: Conflicts of interest The authors declare no conflict of interest. (© The Author(s) 2022. Published by Oxford University Press on behalf of the Genetics Society of America.) |
| Databáze: | MEDLINE |
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