About: Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae)

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About: Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae) Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Sequence variation and genomic organization of 45S and 5S rDNA families in the allohexaploid grass Thinopyrum intermedium showed that both families have undergone different patterns of evolution. ITS sequences residing within the arrays of two subgenomes out of three got homogenized towards one major ribotype, while the third subgenome contained a minor proportion of distinct unhomogenized copies. Homogenization mechanisms such as unequal crossover and/or gene conversion were coupled with the loss of certain 45S rDNA loci. Unlike in the 45S family, the data suggest that neither interlocus homogenization among homeologous chromosomes nor locus loss occurred in 5S rDNA. 5S sequences suggested the contributions from Aegilops to the intermediate wheatgrass’ genome, which is a new finding with implications in wheat improvement. Sequence variation and genomic organization of 45S and 5S rDNA families in the allohexaploid grass Thinopyrum intermedium showed that both families have undergone different patterns of evolution. ITS sequences residing within the arrays of two subgenomes out of three got homogenized towards one major ribotype, while the third subgenome contained a minor proportion of distinct unhomogenized copies. Homogenization mechanisms such as unequal crossover and/or gene conversion were coupled with the loss of certain 45S rDNA loci. Unlike in the 45S family, the data suggest that neither interlocus homogenization among homeologous chromosomes nor locus loss occurred in 5S rDNA. 5S sequences suggested the contributions from Aegilops to the intermediate wheatgrass’ genome, which is a new finding with implications in wheat improvement. (en)
Title	Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae) Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae) (en)
skos:prefLabel	Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae) Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae) (en)
skos:notation	RIV/67985939:_____/13:00395682!RIV14-AV0-67985939
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-04454S)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Mahelka, Václav
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	Botanický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	66912
http://linked.open...ai/riv/idVysledku	RIV/67985939:_____/13:00395682
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Triticeae; polyploidy; roibosomal DNA (en)
http://linked.open.../riv/klicoveSlovo	roibosomal DNA Triticeae polyploidy
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[9C6DC223D41A]
http://linked.open...i/riv/nazevZdroje	Molecular Biology and Evolution
http://linked.open...in/vavai/riv/obor	EF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Cizorodý genetický materiál v genomu Elymus repens a ostatních Triticeae: jeho charakteristika, původ a evoluční význam.
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	30
http://linked.open...iv/tvurceVysledku	Kopecký, David Mahelka, Václav Baum, B. R.
http://linked.open...ain/vavai/riv/wos	000323616600007
issn	0737-4038
number of pages	22 (xsd:int)
http://bibframe.org/vocab/doi	10.1093/molbev/mst106

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