Chromosome Distribution of Highly Conserved Tandemly Arranged Repetitive DNAs in the Siberian Sturgeon (Acipenser baerii)

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dc.contributor.authorBiltueva, Larisa
dc.contributor.authorProkopov, Dmitry
dc.contributor.authorRomanenko, Svetlana
dc.contributor.authorInteresova, Elena A.
dc.contributor.authorSchartl, Manfred
dc.contributor.authorTrifonov, Vladimir
dc.date.accessioned2021-07-26T15:58:28Z
dc.date.available2021-07-26T15:58:28Z
dc.date.issued2020-11-20
dc.description.abstractPolyploid genomes present a challenge for cytogenetic and genomic studies, due to the high number of similar size chromosomes and the simultaneous presence of hardly distinguishable paralogous elements. The karyotype of the Siberian sturgeon (Acipenser baerii) contains around 250 chromosomes and is remarkable for the presence of paralogs from two rounds of whole-genome duplications (WGD). In this study, we applied the sterlet-derived acipenserid satDNA-based whole chromosome-specific probes to analyze the Siberian sturgeon karyotype. We demonstrate that the last genome duplication event in the Siberian sturgeon was accompanied by the simultaneous expansion of several repetitive DNA families. Some of the repetitive probes serve as good cytogenetic markers distinguishing paralogous chromosomes and detecting ancestral syntenic regions, which underwent fusions and fissions. The tendency of minisatellite specificity for chromosome size groups previously observed in the sterlet genome is also visible in the Siberian sturgeon. We provide an initial physical chromosome map of the Siberian sturgeon genome supported by molecular markers. The application of these data will facilitate genomic studies in other recent polyploid sturgeon species.
dc.description.departmentBiology
dc.formatText
dc.format.extent18 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationBiltueva, L. S., Prokopov, D. Y., Romanenko, S. A., Interesova, E. A., Schartl, M., & Trifonov, V. A. (2020). Chromosome distribution of highly conserved tandemly arranged repetitive DNAs in the Siberian sturgeon (Acipenser baerii). Genes, 11(11), 1375.
dc.identifier.doihttps://doi.org/10.3390/genes11111375
dc.identifier.issn2073-4425
dc.identifier.urihttps://hdl.handle.net/10877/14075
dc.language.isoen
dc.publisherMultidisciplinary Digital Publishing Institute
dc.rights.holder© 2020 The Authors.
dc.rights.licenseThis work is licensed under a Creative Commons Attribution 4.0 International License.
dc.sourceGenes, 2020, Vol. 11, No. 11, Article 1375.
dc.subjectAcipenser baerii
dc.subjectsturgeon karyotype
dc.subjectwhole-genome duplication
dc.subjectparalogs
dc.subjectpolyploidy
dc.subjectacipenserid minisatellite
dc.subjectsatellite DNA
dc.subjecttandem repeats
dc.subjectBiology
dc.titleChromosome Distribution of Highly Conserved Tandemly Arranged Repetitive DNAs in the Siberian Sturgeon (Acipenser baerii)
dc.typeArticle

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