Christian Parisod

TL;DR: A perspective on the context and evolutionary significance of hybridization during speciation is offered, highlighting issues of current interest and debate and suggesting that the Dobzhansky–Muller model of hybrid incompatibilities requires a broader interpretation.

TL;DR: It is hypothesized that polysomic inheritance may provide a short-term evolutionary advantage for autopolyploids compared to diploid relatives when environmental change enforces range shifts, and should possess increased genome flexibility, allowing them to adapt and persist across heterogeneous landscapes in the long run.

TL;DR: Co-Inertia analysis, exploring jointly the genetic and epigenetic data, showed that individuals with similar genetic profiles presented divergent epigenetic profiles that were characteristic of the population in a particular environment, suggesting that CpG-methylation changes may be associated with environmental heterogeneity.

TL;DR: Transposable elements (TEs) represent an important fraction of plant genomes and are likely to play a pivotal role in fuelling genome reorganization and functional changes following allopolyploidization, but available evidence indicates that TE proliferation in the short or the long term after allopolyPloidization may be restricted to a few TEs.

TL;DR: Nuclear and chloroplast DNA data indicate a reticulate origin (alloheptaploid) of the invasive Spartina densiflora, and Transcriptomic changes suggest possible gene silencing in both hybrids and allopolyploid.