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Statements

Subject Item
n2:RIV%2F60076658%3A12520%2F14%3A43886836%21RIV15-GA0-12520___
rdf:type
skos:Concept n19:Vysledek
rdfs:seeAlso
http://www.biomedcentral.com/1471-2156/15/5
dcterms:description
Background: Evolution of sturgeons and paddlefishes (order Acipenseriformes) is inherently connected with polyploidization events which resulted in differentiation of ploidy levels and chromosome numbers of present acipenseriform species. Moreover, allopolyploidization as well as autopolyploidization seems to be an ongoing process in these fishes and individuals with abnormal ploidy levels were occasionally observed within sturgeon populations. Here, we reported occurrence of Siberian sturgeon (Acipenser baerii) male with abnormal ploidy level for this species, accessed its ploidy level and chromosome number and investigate its potential sterility or fertility in comparison with normal individuals of sterlet (A. ruthenus), Russian sturgeon (A. gueldenstaedtii) and Siberian sturgeon (A. baerii). Results: Acipenser ruthenus possessed 120 chromosomes, exhibiting recent diploidy (2n), A. gueldenstaedtii and A. baerii had similar to 245 chromosomes representing recent tetraploidy (4n), and A. baerii male with abnormal ploidy level had similar to 368 chromosomes, indicating recent hexaploidy (6n). Genealogy assessed from the mtDNA control region did not reveal genome markers of other sturgeon species and this individual was supposed to originate from spontaneous 1.5 fold increment in number of chromosome sets with respect to the number most frequently found in nature for this species. Following hormone stimulation, the spontaneous hexaploid male produced normal sperm with ability for fertilization. Fertilization of A. baerii and A. gueldenstaedtii ova from normal 4n level females with sperm of the hexaploid male produced viable, non-malformed pentaploid (5n) progeny with a ploidy level intermediate to those of the parents. Conclusion: This study firstly described occurrence of hexaploid individual of A. baerii and confirmed its autopolyploid origin. Background: Evolution of sturgeons and paddlefishes (order Acipenseriformes) is inherently connected with polyploidization events which resulted in differentiation of ploidy levels and chromosome numbers of present acipenseriform species. Moreover, allopolyploidization as well as autopolyploidization seems to be an ongoing process in these fishes and individuals with abnormal ploidy levels were occasionally observed within sturgeon populations. Here, we reported occurrence of Siberian sturgeon (Acipenser baerii) male with abnormal ploidy level for this species, accessed its ploidy level and chromosome number and investigate its potential sterility or fertility in comparison with normal individuals of sterlet (A. ruthenus), Russian sturgeon (A. gueldenstaedtii) and Siberian sturgeon (A. baerii). Results: Acipenser ruthenus possessed 120 chromosomes, exhibiting recent diploidy (2n), A. gueldenstaedtii and A. baerii had similar to 245 chromosomes representing recent tetraploidy (4n), and A. baerii male with abnormal ploidy level had similar to 368 chromosomes, indicating recent hexaploidy (6n). Genealogy assessed from the mtDNA control region did not reveal genome markers of other sturgeon species and this individual was supposed to originate from spontaneous 1.5 fold increment in number of chromosome sets with respect to the number most frequently found in nature for this species. Following hormone stimulation, the spontaneous hexaploid male produced normal sperm with ability for fertilization. Fertilization of A. baerii and A. gueldenstaedtii ova from normal 4n level females with sperm of the hexaploid male produced viable, non-malformed pentaploid (5n) progeny with a ploidy level intermediate to those of the parents. Conclusion: This study firstly described occurrence of hexaploid individual of A. baerii and confirmed its autopolyploid origin.
dcterms:title
Fertility of a spontaneous hexaploid male Siberian sturgeon, Acipenser baerii Fertility of a spontaneous hexaploid male Siberian sturgeon, Acipenser baerii
skos:prefLabel
Fertility of a spontaneous hexaploid male Siberian sturgeon, Acipenser baerii Fertility of a spontaneous hexaploid male Siberian sturgeon, Acipenser baerii
skos:notation
RIV/60076658:12520/14:43886836!RIV15-GA0-12520___
n3:aktivita
n7:S n7:P n7:I
n3:aktivity
I, P(ED2.1.00/01.0024), P(EE2.3.30.0049), P(GA523/08/0824), P(LO1205), S
n3:cisloPeriodika
5
n3:dodaniDat
n11:2015
n3:domaciTvurceVysledku
Bytyutskyy, Dmytro n9:9895744 n9:2222590 n9:4098285 n9:3624900 n9:5876001 n9:2489627
n3:druhVysledku
n6:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
16670
n3:idVysledku
RIV/60076658:12520/14:43886836
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Triploidization; Autopolyploidization; Sperm quality; Polyploidy determination; Acipenseridae
n3:klicoveSlovo
n5:Acipenseridae n5:Autopolyploidization n5:Polyploidy%20determination n5:Triploidization n5:Sperm%20quality
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[8B3EFBDFA902]
n3:nazevZdroje
BMC GENETICS
n3:obor
n18:EB
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
11
n3:projekt
n15:ED2.1.00%2F01.0024 n15:GA523%2F08%2F0824 n15:EE2.3.30.0049 n15:LO1205
n3:rokUplatneniVysledku
n11:2014
n3:svazekPeriodika
15
n3:tvurceVysledku
Ráb, Petr Hulák, Martin Pšenička, Martin Flajšhans, Martin Gela, David Ludwig, Arne Lieckfeldt, Dietmar Bytyutskyy, Dmytro Havelka, Miloš Rabova, Marie Rodina, Marek
n3:wos
000329970700001
s:issn
1471-2156
s:numberOfPages
10
n17:doi
10.1186/1471-2156-15-5
n20:organizacniJednotka
12520