When fathers are instant losers: homogenization of rDNA loci in recently formed Cardamine X schulzii trigenomic allopolyploid

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F14%3A00074135" target="_blank" >RIV/00216224:14740/14:00074135 - isvavai.cz</a>
Alternative codes found
RIV/68081707:_____/14:00431583
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1111/nph.12873/epdf" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/nph.12873/epdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/nph.12873" target="_blank" >10.1111/nph.12873</a>

Result language
angličtina
Original language name
When fathers are instant losers: homogenization of rDNA loci in recently formed Cardamine X schulzii trigenomic allopolyploid
Original language description
Recently formed allopolyploids represent an excellent system to study the impacts of hybridization and genomic duplication on genome structure and evolution. Here we explored the 35S rRNA genes (rDNA) in the Cardamine x schulzii allohexaploid that was formed by two subsequent hybridization events within the past c. 150 yr. The rDNA loci were analyzed by cloning, next generation sequencing (NGS), RT-PCR and FISH methods. The primary C. x insueta triploid hybrid derived from C. rivularis (female) and C. amara (male) had gene ratios highly skewed towards maternal sequences. Similarly, C. x schulzii, originating from the secondary hybridization event involving C. x insueta (female) and C. pratensis (male), showed a reduction in paternal rDNA homeologs despite an excess of chromosomes inherited from C. pratensis. We also identified novel rDNA loci in C. x schulzii, suggesting that lost loci might be slowly reinstalled by translocation (but not recombination) of genes from partner genomes.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EB - Genetics and molecular biology
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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