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Statements

Subject Item
n2:RIV%2F67985904%3A_____%2F13%3A00397499%21RIV14-GA0-67985904
rdf:type
skos:Concept n10:Vysledek
dcterms:description
Iberian Leuciscinae have been used in many studies as models to explore topics such as hybridization, allopolyploidy, modes of reproduction, and evolution. This article focuses on the contribution of cytogenomics to foster research in this group of cyprinid fish. Conventional and molecular banding results were reviewed, facilitating comparative analysis between nase and chub taxa inhabiting Portuguese freshwaters. Hybridization is known to occur within both Chondrostoma s.l. and Squalius genera although polyploidy has only been reported in the latter; the reasons behind such differential genome flexibility remain unidentified. FISH tools allowed recognizing additional chromosome markers, confirming NOR polymorphism and distinguishing species and their hybrids. Recombination and genome instability were detected in homoploid and polyploid hybrid genomes supporting active NOR transposition. However, the multiplication of rDNAs in these species does not seem to be associated with Rex3 retroelement, though hybrids were not surveyed. CGH and GISH allowed reaffirming the hybrid origin of S. alburnoides and confirming that the conservative karyotype patterns within Iberian leuciscines are restricted to the macrostructure. Current data also support the usefulness of mapping repetitive DNAs, especially for nonmodel compact genomes with less variable karyotypes and sequence data resources unavailable, like in many cyprinid lineages Iberian Leuciscinae have been used in many studies as models to explore topics such as hybridization, allopolyploidy, modes of reproduction, and evolution. This article focuses on the contribution of cytogenomics to foster research in this group of cyprinid fish. Conventional and molecular banding results were reviewed, facilitating comparative analysis between nase and chub taxa inhabiting Portuguese freshwaters. Hybridization is known to occur within both Chondrostoma s.l. and Squalius genera although polyploidy has only been reported in the latter; the reasons behind such differential genome flexibility remain unidentified. FISH tools allowed recognizing additional chromosome markers, confirming NOR polymorphism and distinguishing species and their hybrids. Recombination and genome instability were detected in homoploid and polyploid hybrid genomes supporting active NOR transposition. However, the multiplication of rDNAs in these species does not seem to be associated with Rex3 retroelement, though hybrids were not surveyed. CGH and GISH allowed reaffirming the hybrid origin of S. alburnoides and confirming that the conservative karyotype patterns within Iberian leuciscines are restricted to the macrostructure. Current data also support the usefulness of mapping repetitive DNAs, especially for nonmodel compact genomes with less variable karyotypes and sequence data resources unavailable, like in many cyprinid lineages
dcterms:title
Chromosomes of Iberian Leuciscinae (Cyprinidae) Revisited: Evidence of Genome Restructuring in Homoploid Hybrids Using Dual-Color FISH and CGH Chromosomes of Iberian Leuciscinae (Cyprinidae) Revisited: Evidence of Genome Restructuring in Homoploid Hybrids Using Dual-Color FISH and CGH
skos:prefLabel
Chromosomes of Iberian Leuciscinae (Cyprinidae) Revisited: Evidence of Genome Restructuring in Homoploid Hybrids Using Dual-Color FISH and CGH Chromosomes of Iberian Leuciscinae (Cyprinidae) Revisited: Evidence of Genome Restructuring in Homoploid Hybrids Using Dual-Color FISH and CGH
skos:notation
RIV/67985904:_____/13:00397499!RIV14-GA0-67985904
n10:predkladatel
n12:ico%3A67985904
n5:aktivita
n13:I n13:P
n5:aktivity
I, P(GA13-37277S)
n5:cisloPeriodika
2/3
n5:dodaniDat
n7:2014
n5:domaciTvurceVysledku
n11:9818863
n5:druhVysledku
n14:J
n5:duvernostUdaju
n16:S
n5:entitaPredkladatele
n15:predkladatel
n5:idSjednocenehoVysledku
65411
n5:idVysledku
RIV/67985904:_____/13:00397499
n5:jazykVysledku
n6:eng
n5:klicovaSlova
CGH/GISH; Chondrostoma s.I.; genome reshuffling hybridization
n5:klicoveSlovo
n18:genome%20reshuffling%20hybridization n18:CGH%2FGISH n18:Chondrostoma%20s.I.
n5:kodStatuVydavatele
CH - Švýcarská konfederace
n5:kontrolniKodProRIV
[2FA146C7EE4B]
n5:nazevZdroje
Cytogenetics and Genome Research
n5:obor
n9:EB
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
3
n5:projekt
n19:GA13-37277S
n5:rokUplatneniVysledku
n7:2013
n5:svazekPeriodika
141
n5:tvurceVysledku
Collares-Pereira, M. J. Pereira, C. S. Ráb, Petr
n5:wos
000326436200008
s:issn
1424-8581
s:numberOfPages
10
n17:doi
10.1159/000354582