About: High Penetrance of a Pan-Canina Type rDNA Family in Intersection Rosa Hybrids Suggests Strong Selection of Bivalent Chromosomes in the Section Caninae

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About: High Penetrance of a Pan-Canina Type rDNA Family in Intersection Rosa Hybrids Suggests Strong Selection of Bivalent Chromosomes in the Section Caninae Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	All dogroses (Rosa sect. Caninae) are characterized by the peculiar canina meiosis in which genetic material is unevenly distributed between female and male gametes. The pan-canina rDNA family (termed beta) appears to be conserved in all dogroses analyzed so far. Here, we have studied rDNAs in experimental hybrids obtained from open pollination of F1 plants derived from 2 independent intersectional crosses between the pentaploid dogrose species (2n = 5x = 35) Rosa rubiginosa as female parent (producing 4x egg cells due to the unique asymmetrical canina meiosis) and the tetraploid (2n = 4x = 28) garden rose R. hybrida 'Andre Brichet' as male parent (producing 2x pollen after normal meiosis). We analyzed the structure of rDNA units by molecular methods [CAPS and extensive sequencing of internal transcribed spacers (ITS)] and determined the number of loci on chromosomes by FISH. FISH showed that R. rubiginosa and 'Andre Brichet' harbored 5 and 4 highly heteromorphic rDNA loci, respectively. In the second generation of hybrid lines, we observed a reduced number of loci (4 and 5 instead of the expected 6). All dogroses (Rosa sect. Caninae) are characterized by the peculiar canina meiosis in which genetic material is unevenly distributed between female and male gametes. The pan-canina rDNA family (termed beta) appears to be conserved in all dogroses analyzed so far. Here, we have studied rDNAs in experimental hybrids obtained from open pollination of F1 plants derived from 2 independent intersectional crosses between the pentaploid dogrose species (2n = 5x = 35) Rosa rubiginosa as female parent (producing 4x egg cells due to the unique asymmetrical canina meiosis) and the tetraploid (2n = 4x = 28) garden rose R. hybrida 'Andre Brichet' as male parent (producing 2x pollen after normal meiosis). We analyzed the structure of rDNA units by molecular methods [CAPS and extensive sequencing of internal transcribed spacers (ITS)] and determined the number of loci on chromosomes by FISH. FISH showed that R. rubiginosa and 'Andre Brichet' harbored 5 and 4 highly heteromorphic rDNA loci, respectively. In the second generation of hybrid lines, we observed a reduced number of loci (4 and 5 instead of the expected 6). (en)
Title	High Penetrance of a Pan-Canina Type rDNA Family in Intersection Rosa Hybrids Suggests Strong Selection of Bivalent Chromosomes in the Section Caninae High Penetrance of a Pan-Canina Type rDNA Family in Intersection Rosa Hybrids Suggests Strong Selection of Bivalent Chromosomes in the Section Caninae (en)
skos:prefLabel	High Penetrance of a Pan-Canina Type rDNA Family in Intersection Rosa Hybrids Suggests Strong Selection of Bivalent Chromosomes in the Section Caninae High Penetrance of a Pan-Canina Type rDNA Family in Intersection Rosa Hybrids Suggests Strong Selection of Bivalent Chromosomes in the Section Caninae (en)
skos:notation	RIV/68081707:_____/14:00435401!RIV15-GA0-68081707
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-10057S)
http://linked.open...iv/cisloPeriodika	1-3
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Kovaříková, Alena Kovařík, Aleš Khaitová, Lucie
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biofyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	19072
http://linked.open...ai/riv/idVysledku	RIV/68081707:_____/14:00435401
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Asymmetrical meiosis; Dogrose; Interspecies hybrid (en)
http://linked.open.../riv/klicoveSlovo	Asymmetrical meiosis Dogrose Interspecies hybrid
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[E836CEE77623]
http://linked.open...i/riv/nazevZdroje	Cytogenetics and Genome Research
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Struktura, exprese a evoluce genů pro ribosomální RNA u rostlin: novými přistupy k řešení starých otázek
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	143
http://linked.open...iv/tvurceVysledku	Kovařík, Aleš Crhák Khaitová, Lucie Kovaříková, Alena Nybom, H. Werlemark, G.
http://linked.open...ain/vavai/riv/wos	000342614100011
issn	1424-8581
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1159/000360437

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