Genome reorganization in F1 hybrids uncovers the role of retrotransposons in reproductive isolation.

ABSTRACT: Interspecific hybridization leads to new interactions among divergent genomes, revealing the nature of genetic incompatibilities having accumulated during and after the origin of species. Conflicts associated with misregulation of transposable elements (TEs) in hybrids expectedly result in their activation and genome-wide changes that may be key to species boundaries. Repetitive genomes of wild wheats have diverged under differential dynamics of specific long terminal repeat retrotransposons (LTR-RTs), offering unparalleled opportunities to address the underpinnings of plant genome reorganization by selfish sequences. Using reciprocal F1 hybrids between three Aegilops species, restructuring and epigenetic repatterning was assessed at random and LTR-RT sequences with amplified fragment leng

SUBMITTER: Senerchia N 

PROVIDER: S-EPMC4375867 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature