It has long been recognized that hybridization and polyploidy are prominent processes in
plant evolution. Although classically recognized as significant in speciation and adaptation …

Plant genomes are littered with transposable elements (TEs). Because TEs are potentially
highly mutagenic, host organisms have evolved a set of defense mechanisms to recognize …

Coffea arabica, an allotetraploid hybrid of Coffea eugenioides and Coffea canephora, is the
source of approximately 60% of coffee products worldwide, and its cultivated accessions …

Most diploid organisms have polyploid ancestors. The evolutionary process of
polyploidization is poorly understood but has frequently been conjectured to involve some …

Polyploidization plays a key role in plant evolution, but the forces driving the fate of
homoeologs in polyploid genomes, ie, paralogs resulting from a whole-genome duplication …

Hybridization, or interbreeding between different taxa, was traditionally considered to be
rare and to have a largely detrimental impact on biodiversity, sometimes leading to the …

Transposable elements (TEs) are major components of plant genomes with the ability to
change their position in the genome or to create new copies of themselves in other positions …

Transposable elements (TEs) are mobile genetic elements that can profoundly impact the
evolution of genomes and species. A long-standing hypothesis suggests that hybridization …

Gene expression has a key role in reproductive isolation, and studies of hybrid gene
expression have identified mechanisms causing hybrid sterility. Here, we review the …

Barbara McClintock first hypothesized that interspecific hybridization could provide a
“genomic shock” that leads to the mobilization of transposable elements (TEs). This …