The second highest chromosome count among vertebrates is observed in cultured sturgeon and is associated with genome plasticity.
Identifieur interne : 000021 ( Main/Merge ); précédent : 000020; suivant : 000022The second highest chromosome count among vertebrates is observed in cultured sturgeon and is associated with genome plasticity.
Auteurs : Miloš Havelka [République tchèque] ; Dmytro Bytyutskyy [République tchèque] ; Radka Symonová [Autriche] ; Petr Ráb [République tchèque] ; Martin Flajšhans [République tchèque]Source :
- Genetics, selection, evolution : GSE [ 1297-9686 ] ; 2016.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : DNA.
- genetics : Cell Nucleus, Chromosomes, Fertility, Fishes, Meiosis, Microsatellite Repeats.
- Animals, Female, Genome, Genotype, Hybridization, Genetic, Male, Ploidies.
Abstract
One of the five basal actinopterygian lineages, the Chondrostei, including sturgeon, shovelnose, and paddlefish (Order Acipenseriformes) show extraordinary ploidy diversity associated with three rounds of lineage-specific whole-genome duplication, resulting in three levels of ploidy in sturgeon. Recently, incidence of spontaneous polyploidization has been reported among cultured sturgeon and it could have serious negative implications for the economics of sturgeon farming. We report the occurrence of seven spontaneous heptaploid (7n) Siberian sturgeon Acipenser baerii, which is a functional tetraploid species (4n) with ~245 chromosomes. Our aims were to assess ploidy level and chromosome number of the analysed specimens and to identify the possible mechanism that underlies the occurrence of spontaneous additional chromosome sets in their genome.
DOI: 10.1186/s12711-016-0194-0
PubMed: 26867760
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Radka.Symonova@uibk.ac.at.</nlm:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Research Institute for Limnology, University of Innsbruck, Mondseestraße 9, 5310, Mondsee</wicri:regionArea><wicri:noRegion>Mondsee</wicri:noRegion></affiliation></author><author><name sortKey="Rab, Petr" sort="Rab, Petr" uniqKey="Rab P" first="Petr" last="Ráb">Petr Ráb</name><affiliation wicri:level="1"><nlm:affiliation>Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 277 21, Liběchov, Czech Republic. rab@iapg.cas.cz.</nlm:affiliation><country xml:lang="fr">République tchèque</country><wicri:regionArea>Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 277 21, Liběchov</wicri:regionArea><wicri:noRegion>Liběchov</wicri:noRegion></affiliation></author><author><name sortKey="Flajshans, Martin" sort="Flajshans, Martin" uniqKey="Flajshans M" first="Martin" last="Flajšhans">Martin Flajšhans</name><affiliation wicri:level="1"><nlm:affiliation>Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic. flajsh@frov.jcu.cz.</nlm:affiliation><country xml:lang="fr">République tchèque</country><wicri:regionArea>Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany</wicri:regionArea><wicri:noRegion>Vodňany</wicri:noRegion></affiliation></author></analytic><series><title level="j">Genetics, selection, evolution : GSE</title><idno type="eISSN">1297-9686</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Cell Nucleus (genetics)</term><term>Chromosomes (genetics)</term><term>DNA (analysis)</term><term>Female</term><term>Fertility (genetics)</term><term>Fishes (genetics)</term><term>Genome</term><term>Genotype</term><term>Hybridization, Genetic</term><term>Male</term><term>Meiosis (genetics)</term><term>Microsatellite Repeats (genetics)</term><term>Ploidies</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>DNA</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Cell Nucleus</term><term>Chromosomes</term><term>Fertility</term><term>Fishes</term><term>Meiosis</term><term>Microsatellite Repeats</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Female</term><term>Genome</term><term>Genotype</term><term>Hybridization, Genetic</term><term>Male</term><term>Ploidies</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">One of the five basal actinopterygian lineages, the Chondrostei, including sturgeon, shovelnose, and paddlefish (Order Acipenseriformes) show extraordinary ploidy diversity associated with three rounds of lineage-specific whole-genome duplication, resulting in three levels of ploidy in sturgeon. Recently, incidence of spontaneous polyploidization has been reported among cultured sturgeon and it could have serious negative implications for the economics of sturgeon farming. We report the occurrence of seven spontaneous heptaploid (7n) Siberian sturgeon Acipenser baerii, which is a functional tetraploid species (4n) with ~245 chromosomes. Our aims were to assess ploidy level and chromosome number of the analysed specimens and to identify the possible mechanism that underlies the occurrence of spontaneous additional chromosome sets in their genome.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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