Evolution of Polyploidy and Functional Diploidization in Sturgeons: Microsatellite Analysis in 10 Sturgeon Species.
Identifieur interne : 002589 ( Main/Exploration ); précédent : 002588; suivant : 002590Evolution of Polyploidy and Functional Diploidization in Sturgeons: Microsatellite Analysis in 10 Sturgeon Species.
Auteurs : Jelena Rajkov [France] ; Zhaojun Shao [France] ; Patrick Berrebi [France]Source :
- The Journal of heredity [ 1465-7333 ]
Abstract
Sturgeons (family Acipenseridae) are one of the most endangered groups of animals. Two hundred million years of evolution and multiple ploidy levels make this group a unique subject for studying the evolution of polyploidy in animals. As most sturgeon species have gone through significant functional diploidization, 2 scales of ploidy levels can be distinguished: the "evolutionary scale," which indicates the maximum ploidy level achieved and the "recent scale," which indicates the current functional ploidy level. This study analyzes published and new microsatellites to check the ploidy level and to determine the degrees of functional diploidization in 10 sturgeon species from Europe and Asia. We screened 50 primer pairs newly developed for Acipenser gueldenstaedtii and 40 primer pairs previously developed in other studies for other sturgeon species. The maximal number of alleles per individual of a given species was assessed at 20 microsatellite loci, which showed consistent amplification in most of the 10 analyzed species. Taken together, our data on the percentage of disomic loci in different species suggest that functional diploidization is an ongoing process in sturgeons. We observed lower levels of diploidization in tetraploid species from the Atlantic clade than in the species from the Pacific clade, which can be explained by the more recent genome duplication in tetraploid species from the Atlantic clade. Based on the recent findings and results of this study, we propose that the evolution of sturgeons has been affected by at least 3 different polyploidization events.
DOI: 10.1093/jhered/esu027
PubMed: 24829364
Affiliations:
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first="Zhaojun" last="Shao">Zhaojun Shao</name><affiliation wicri:level="4"><nlm:affiliation>From the Université Montpellier II, UMR CNRS 5554 and UMR IRD 226, Institut des Sciences de l'Evolution de Montpellier, CC065, Place Eugène Bataillon, 34095 Montpellier cedex 05, France (Rajkov, Shao, and Berrebi).</nlm:affiliation><orgName type="university">Université Montpellier 2</orgName><country>France</country><placeName><settlement type="city">Montpellier</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Languedoc-Roussillon</region></placeName></affiliation></author><author><name sortKey="Berrebi, Patrick" sort="Berrebi, Patrick" uniqKey="Berrebi P" first="Patrick" last="Berrebi">Patrick Berrebi</name><affiliation wicri:level="1"><nlm:affiliation>From the Université Montpellier II, UMR CNRS 5554 and UMR IRD 226, Institut des Sciences de l'Evolution de Montpellier, CC065, Place Eugène Bataillon, 34095 Montpellier cedex 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administrative)</region><region type="old region" nuts="2">Languedoc-Roussillon</region></placeName></affiliation></author><author><name sortKey="Shao, Zhaojun" sort="Shao, Zhaojun" uniqKey="Shao Z" first="Zhaojun" last="Shao">Zhaojun Shao</name><affiliation wicri:level="4"><nlm:affiliation>From the Université Montpellier II, UMR CNRS 5554 and UMR IRD 226, Institut des Sciences de l'Evolution de Montpellier, CC065, Place Eugène Bataillon, 34095 Montpellier cedex 05, France (Rajkov, Shao, and Berrebi).</nlm:affiliation><orgName type="university">Université Montpellier 2</orgName><country>France</country><placeName><settlement type="city">Montpellier</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Languedoc-Roussillon</region></placeName></affiliation></author><author><name sortKey="Berrebi, Patrick" sort="Berrebi, Patrick" uniqKey="Berrebi P" first="Patrick" last="Berrebi">Patrick Berrebi</name><affiliation wicri:level="1"><nlm:affiliation>From the Université Montpellier II, UMR CNRS 5554 and UMR IRD 226, Institut des Sciences de l'Evolution de Montpellier, CC065, Place Eugène Bataillon, 34095 Montpellier cedex 05, France (Rajkov, Shao, and Berrebi). patrick.berrebi@univ-montp2.fr.</nlm:affiliation><country wicri:rule="url">France</country></affiliation></author></analytic><series><title level="j">The Journal of heredity</title><idno type="eISSN">1465-7333</idno></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Sturgeons (family Acipenseridae) are one of the most endangered groups of animals. Two hundred million years of evolution and multiple ploidy levels make this group a unique subject for studying the evolution of polyploidy in animals. As most sturgeon species have gone through significant functional diploidization, 2 scales of ploidy levels can be distinguished: the "evolutionary scale," which indicates the maximum ploidy level achieved and the "recent scale," which indicates the current functional ploidy level. This study analyzes published and new microsatellites to check the ploidy level and to determine the degrees of functional diploidization in 10 sturgeon species from Europe and Asia. We screened 50 primer pairs newly developed for Acipenser gueldenstaedtii and 40 primer pairs previously developed in other studies for other sturgeon species. The maximal number of alleles per individual of a given species was assessed at 20 microsatellite loci, which showed consistent amplification in most of the 10 analyzed species. Taken together, our data on the percentage of disomic loci in different species suggest that functional diploidization is an ongoing process in sturgeons. We observed lower levels of diploidization in tetraploid species from the Atlantic clade than in the species from the Pacific clade, which can be explained by the more recent genome duplication in tetraploid species from the Atlantic clade. Based on the recent findings and results of this study, we propose that the evolution of sturgeons has been affected by at least 3 different polyploidization events.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Languedoc-Roussillon</li><li>Occitanie (région administrative)</li></region><settlement><li>Montpellier</li></settlement><orgName><li>Université Montpellier 2</li></orgName></list><tree><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Rajkov, Jelena" sort="Rajkov, Jelena" uniqKey="Rajkov J" first="Jelena" last="Rajkov">Jelena Rajkov</name></region><name sortKey="Berrebi, Patrick" sort="Berrebi, Patrick" uniqKey="Berrebi P" first="Patrick" last="Berrebi">Patrick Berrebi</name><name sortKey="Shao, Zhaojun" sort="Shao, Zhaojun" uniqKey="Shao Z" first="Zhaojun" last="Shao">Zhaojun Shao</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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