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A comparative study of meiotic recombination in cattle (Bos taurus) and three wildebeest species (Connochaetes gnou, C. taurinus taurinus and C. t. albojubatus)
M. Vozdova, H. Sebestova, S. Kubickova, H. Cernohorska, J. Vahala, J. Rubes,
Jazyk angličtina Země Švýcarsko
Typ dokumentu srovnávací studie, časopisecké články, práce podpořená grantem
NLK
ProQuest Central
od 2001 do 2015-11-30
Medline Complete (EBSCOhost)
od 2002-01-01 do Před 1 rokem
Health & Medicine (ProQuest)
od 2001 do 2015-11-30
PubMed
23594414
DOI
10.1159/000350444
Knihovny.cz E-zdroje
- MeSH
- centromera genetika MeSH
- hybridizace in situ fluorescenční MeSH
- meióza * MeSH
- pachytenní stadium MeSH
- pohlavní chromozomy genetika MeSH
- přežvýkavci genetika MeSH
- proteiny buněčného cyklu genetika MeSH
- rekombinace genetická * MeSH
- savčí chromozomy genetika MeSH
- skot genetika MeSH
- spermatocyty cytologie MeSH
- synaptonemální komplex genetika MeSH
- testis cytologie MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- skot genetika MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- srovnávací studie MeSH
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.
Citace poskytuje Crossref.org
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