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Statements

Subject Item
n2:RIV%2F00027162%3A_____%2F13%3A%230001006%21RIV14-GA0-00027162
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The karyotypic evolution in the family Bovidae is based on centric fusions of ancestral acrocentric chromosomes. Here, the frequency and distribution of meiotic recombination was analyzed in pachytene spermatocytes from Bos taurus (2n = 60) and 3 wildebeest species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus) (2n = 58) using immunofluorescence and fluorescence in situ hybridization. Significant differences in mean numbers of recombination events per cell were observed between B. taurus and members of the genus Connochaetes (47.2 vs. 43.7, p < 0.001). The number of MLH1 foci was significantly correlated with the length of the autosomal synaptonemal complexes. The average interfocus distance was influenced by interference. The male recombination maps of bovine chromosomes 2 and 25 and of their fused homologues in wildebeests were constructed. A significant reduction of recombination in the fused chromosome BTA25 was observed in wildebeests (p = 0.005). This was probably caused by interference acting across the centromere, which was significantly stronger than the intra-arm interference. This comparative meiotic study showed significant differences among the species from the family Bovidae with the same fundamental number of autosomal arms (FNa = 29) which differ by a single centric fusion. The karyotypic evolution in the family Bovidae is based on centric fusions of ancestral acrocentric chromosomes. Here, the frequency and distribution of meiotic recombination was analyzed in pachytene spermatocytes from Bos taurus (2n = 60) and 3 wildebeest species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus) (2n = 58) using immunofluorescence and fluorescence in situ hybridization. Significant differences in mean numbers of recombination events per cell were observed between B. taurus and members of the genus Connochaetes (47.2 vs. 43.7, p < 0.001). The number of MLH1 foci was significantly correlated with the length of the autosomal synaptonemal complexes. The average interfocus distance was influenced by interference. The male recombination maps of bovine chromosomes 2 and 25 and of their fused homologues in wildebeests were constructed. A significant reduction of recombination in the fused chromosome BTA25 was observed in wildebeests (p = 0.005). This was probably caused by interference acting across the centromere, which was significantly stronger than the intra-arm interference. This comparative meiotic study showed significant differences among the species from the family Bovidae with the same fundamental number of autosomal arms (FNa = 29) which differ by a single centric fusion.
dcterms:title
A Comparative Study of Meiotic Recombination in Cattle (Bos taurus) and Three Wildebeest Species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus) A Comparative Study of Meiotic Recombination in Cattle (Bos taurus) and Three Wildebeest Species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus)
skos:prefLabel
A Comparative Study of Meiotic Recombination in Cattle (Bos taurus) and Three Wildebeest Species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus) A Comparative Study of Meiotic Recombination in Cattle (Bos taurus) and Three Wildebeest Species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus)
skos:notation
RIV/00027162:_____/13:#0001006!RIV14-GA0-00027162
n15:predkladatel
n16:ico%3A00027162
n3:aktivita
n18:P
n3:aktivity
P(ED1.1.00/02.0068), P(GAP502/11/0719)
n3:cisloPeriodika
1
n3:dodaniDat
n5:2014
n3:domaciTvurceVysledku
n7:4702077 n7:9189939 n7:8408033 n7:8164703 n7:8767246
n3:druhVysledku
n17:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
58489
n3:idVysledku
RIV/00027162:_____/13:#0001006
n3:jazykVysledku
n14:eng
n3:klicovaSlova
Immunofluorescence; Meiosis; Recombination; Spermatocyte; Synaptonemal complex
n3:klicoveSlovo
n8:Spermatocyte n8:Meiosis n8:Synaptonemal%20complex n8:Immunofluorescence n8:Recombination
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[D7050F5B2DC9]
n3:nazevZdroje
CYTOGENETIC AND GENOME RESEARCH
n3:obor
n19:EB
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
6
n3:projekt
n4:ED1.1.00%2F02.0068 n4:GAP502%2F11%2F0719
n3:rokUplatneniVysledku
n5:2013
n3:svazekPeriodika
140
n3:tvurceVysledku
Vahala, J. Šebestová, Hana Kubíčková, Svatava Rubeš, Jiří Vozdová, Miluše Černohorská, Halina
n3:wos
000320306500005
s:issn
1424-8581
s:numberOfPages
10
n13:doi
10.1159/000350444