2014
When fathers are instant losers: homogenization of rDNA loci in recently formed Cardamine X schulzii trigenomic allopolyploid
ZOZOMOVÁ-LIHOVÁ, Judita, Terezie MANDÁKOVÁ, Alena KOVAŘÍKOVÁ, Andreas MÜHLHAUSEN, Klaus MUMMENHOFF et. al.Základní údaje
Originální název
When fathers are instant losers: homogenization of rDNA loci in recently formed Cardamine X schulzii trigenomic allopolyploid
Autoři
ZOZOMOVÁ-LIHOVÁ, Judita (703 Slovensko), Terezie MANDÁKOVÁ (203 Česká republika, domácí), Alena KOVAŘÍKOVÁ (203 Česká republika), Andreas MÜHLHAUSEN (276 Německo), Klaus MUMMENHOFF (276 Německo), Martin LYSÁK (203 Česká republika, garant, domácí) a Aleš KOVAŘÍK (203 Česká republika)
Vydání
New Phytologist, Hoboken, WILEY-BLACKWELL, 2014, 0028-646X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 7.672
Kód RIV
RIV/00216224:14740/14:00074135
Organizační jednotka
Středoevropský technologický institut
UT WoS
000340286000010
Klíčová slova anglicky
NUCLEAR RIBOSOMAL DNA; RNA GENE SITES; CONCERTED EVOLUTION; TRAGOPOGON ASTERACEAE; NATURAL-POPULATIONS; SENECIO-CAMBRENSIS; MOLECULAR EVIDENCE; BRASSICA-NAPUS; PARENTAL RDNA; GENOME
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 11. 3. 2015 13:49, Martina Prášilová
Anotace
V originále
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. Prevalent clonal propagation of allopolyploids, C. x insueta and C. x schulzii, indicates that concerted evolution of rDNA may occur in the absence of extensive meiotic cycles. Adoption of NGS in rDNA variant analysis is highly informative for deciphering the evolutionary histories of allopolyploid species with ongoing homogenization processes.
Návaznosti
EE2.3.20.0189, projekt VaV |
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EE2.3.30.0037, projekt VaV |
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GBP501/12/G090, projekt VaV |
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