Allopolyploidy, the joining of two parental genomes in a polyploid organism with diploid meiosis, is an important mechanism of reticulate evolution. While many successful long–established allopolyploids are known, those formed recently undergo an instability phase whose basis is now being characterized. We describe observations made with the Arabidopsis system that include phenotypic instability, gene silencing and activation, and methylation changes. We present a model based on the epigenetic destabilization of genomic repeats, which in the parents are heterochromatinized and suppressed. We hypothesize that loss of epigenetic suppression of these sequences, here defined as the heterome, results in genomic instability including silencing of...
The joining of different genomes in allotetraploids played a major role in plant evolution, but the ...
SummaryEpigenetic variation is currently being investigated with the aim of deciphering its importan...
Transgenerational epigenetic inheritance has been defined by the study of relatively few loci. We ex...
Allopolyploidy, the joining of two parental genomes in a polyploid organism with diploid meiosis, is...
Allopolyploidy, the joining of two parental genomes in a polyploid organism with diploid meiosis, is...
Polyploids are common and arise frequently by genome duplication (autopolyploids) or interspecific h...
Abstract Background Distant hybridization can result genome duplication and allopolyploid formation ...
Abstract: Perhaps all flowering plants have experienced one or more episodes of polyploidization at ...
The genomic shock hypothesis suggests that allopolyploidy is associated with genome changes driven b...
Polyploidization is an abrupt speciation mechanism for eukaryotes and is especially common in plants...
The merger of two or more divergent genomes within an allopolyploid nucleus can facilitate speciatio...
Polyploidy, the condition of possessing more than 2 complete chromosome sets in the same nucleus, is...
Epigenetic changes of gene expression can potentially be reversed by developmental programs, genetic...
International audienceThe genomic shock hypothesis suggests that allopolyploidy is associated with g...
Transposable elements (TEs) represent an important fraction of plant genomes and are likely to play ...
The joining of different genomes in allotetraploids played a major role in plant evolution, but the ...
SummaryEpigenetic variation is currently being investigated with the aim of deciphering its importan...
Transgenerational epigenetic inheritance has been defined by the study of relatively few loci. We ex...
Allopolyploidy, the joining of two parental genomes in a polyploid organism with diploid meiosis, is...
Allopolyploidy, the joining of two parental genomes in a polyploid organism with diploid meiosis, is...
Polyploids are common and arise frequently by genome duplication (autopolyploids) or interspecific h...
Abstract Background Distant hybridization can result genome duplication and allopolyploid formation ...
Abstract: Perhaps all flowering plants have experienced one or more episodes of polyploidization at ...
The genomic shock hypothesis suggests that allopolyploidy is associated with genome changes driven b...
Polyploidization is an abrupt speciation mechanism for eukaryotes and is especially common in plants...
The merger of two or more divergent genomes within an allopolyploid nucleus can facilitate speciatio...
Polyploidy, the condition of possessing more than 2 complete chromosome sets in the same nucleus, is...
Epigenetic changes of gene expression can potentially be reversed by developmental programs, genetic...
International audienceThe genomic shock hypothesis suggests that allopolyploidy is associated with g...
Transposable elements (TEs) represent an important fraction of plant genomes and are likely to play ...
The joining of different genomes in allotetraploids played a major role in plant evolution, but the ...
SummaryEpigenetic variation is currently being investigated with the aim of deciphering its importan...
Transgenerational epigenetic inheritance has been defined by the study of relatively few loci. We ex...