Extensive genome duplications in sturgeons: new evidence from microsatellite data
Identifieur interne : 000C43 ( Istex/Corpus ); précédent : 000C42; suivant : 000C44Extensive genome duplications in sturgeons: new evidence from microsatellite data
Auteurs : M. Havelka ; M. Hulák ; D. A. Bailie ; P. A. Prodöhl ; M. FlajšhansSource :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 2013-08.
Abstract
Genome duplications and polyploidization events are thought to have played relevant roles in the early stages of vertebrate evolution, in particular near the time of divergence of the lamprey lineage. Additional genome duplications, specifically in ray‐finned fish, may have occurred before the divergence of the teleosts. The role of polyploidization in vertebrate genome evolution is a thriving area of research. Sturgeons (order Acipenseriformes) provide a unique model for the investigation of genome duplication, with existing species possessing 120, 250 or 360 chromosomes. In the present study, data from 240 sturgeon specimens representing 11 species were used for analysis of ploidy levels. Allele numbers were assessed at eleven microsatellite loci. The results provide further evidence for functional diploidy, tetraploidy and hexaploidy in species possessing 120, 250 and 360 chromosomes, respectively. The analysis also uncovered novel evidence for functional hexaploidy in the shortnose sturgeon (Acipenser brevirostrum). In conclusion, the process of functional genome reduction is demonstrated to be an on‐going process in this fish lineage.
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DOI: 10.1111/jai.12224
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<orgName>Medical Biology Centre</orgName>
<address><city>Belfast</city>
<country>UK</country>
</address>
</affiliation>
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<abstractGroup><abstract type="main" xml:id="jai12224-abs-0001" xml:lang="en"><title type="main">Summary</title>
<p>Genome duplications and polyploidization events are thought to have played relevant roles in the early stages of vertebrate evolution, in particular near the time of divergence of the lamprey lineage. Additional genome duplications, specifically in ray‐finned fish, may have occurred before the divergence of the teleosts. The role of polyploidization in vertebrate genome evolution is a thriving area of research. Sturgeons (order <fc>A</fc>
cipenseriformes) provide a unique model for the investigation of genome duplication, with existing species possessing 120, 250 or 360 chromosomes. In the present study, data from 240 sturgeon specimens representing 11 species were used for analysis of ploidy levels. Allele numbers were assessed at eleven microsatellite loci. The results provide further evidence for functional diploidy, tetraploidy and hexaploidy in species possessing 120, 250 and 360 chromosomes, respectively. The analysis also uncovered novel evidence for functional hexaploidy in the shortnose sturgeon (<i><fc>A</fc>
cipenser brevirostrum</i>
). In conclusion, the process of functional genome reduction is demonstrated to be an on‐going process in this fish lineage.</p>
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<mods version="3.6"><titleInfo lang="en"><title>Extensive genome duplications in sturgeons: new evidence from microsatellite data</title>
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<titleInfo type="alternative" contentType="CDATA" lang="en"><title>Extensive genome duplications in sturgeons: new evidence from microsatellite data</title>
</titleInfo>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Havelka</namePart>
<affiliation>Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Vodňany, Czech Republic</affiliation>
<affiliation>Miloš Havelka, University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, CZ‐389 25 Vodňany, Czech.E‐mail:</affiliation>
<affiliation>E-mail: havelm02@frov.jcu.cz</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Hulák</namePart>
<affiliation>Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Vodňany, Czech Republic</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">D. A.</namePart>
<namePart type="family">Bailie</namePart>
<affiliation>School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, Belfast, UK</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">P. A.</namePart>
<namePart type="family">Prodöhl</namePart>
<affiliation>School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, Belfast, UK</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Flajšhans</namePart>
<affiliation>Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Vodňany, Czech Republic</affiliation>
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<originInfo><publisher>Blackwell Publishing Ltd</publisher>
<dateIssued encoding="w3cdtf">2013-08</dateIssued>
<dateCreated encoding="w3cdtf">2013-03-26</dateCreated>
<dateCaptured encoding="w3cdtf">2013-01-30</dateCaptured>
<dateValid encoding="w3cdtf">2013-02-24</dateValid>
<copyrightDate encoding="w3cdtf">2013</copyrightDate>
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<abstract lang="en">Genome duplications and polyploidization events are thought to have played relevant roles in the early stages of vertebrate evolution, in particular near the time of divergence of the lamprey lineage. Additional genome duplications, specifically in ray‐finned fish, may have occurred before the divergence of the teleosts. The role of polyploidization in vertebrate genome evolution is a thriving area of research. Sturgeons (order Acipenseriformes) provide a unique model for the investigation of genome duplication, with existing species possessing 120, 250 or 360 chromosomes. In the present study, data from 240 sturgeon specimens representing 11 species were used for analysis of ploidy levels. Allele numbers were assessed at eleven microsatellite loci. The results provide further evidence for functional diploidy, tetraploidy and hexaploidy in species possessing 120, 250 and 360 chromosomes, respectively. The analysis also uncovered novel evidence for functional hexaploidy in the shortnose sturgeon (Acipenser brevirostrum). In conclusion, the process of functional genome reduction is demonstrated to be an on‐going process in this fish lineage.</abstract>
<relatedItem type="host"><titleInfo><title>Journal of Applied Ichthyology</title>
</titleInfo>
<titleInfo type="abbreviated"><title>J. Appl. Ichthyol.</title>
</titleInfo>
<genre type="journal">journal</genre>
<subject><genre>article-category</genre>
<topic>Original Article</topic>
</subject>
<identifier type="ISSN">0175-8659</identifier>
<identifier type="eISSN">1439-0426</identifier>
<identifier type="DOI">10.1111/(ISSN)1439-0426</identifier>
<identifier type="PublisherID">JAI</identifier>
<part><date>2013</date>
<detail type="volume"><caption>vol.</caption>
<number>29</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>4</number>
</detail>
<extent unit="pages"><start>704</start>
<end>708</end>
<total>5</total>
</extent>
</part>
</relatedItem>
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<identifier type="DOI">10.1111/jai.12224</identifier>
<identifier type="ArticleID">JAI12224</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 Blackwell Verlag GmbH© 2013 Blackwell Verlag GmbH</accessCondition>
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