Perturbation of parent-specific gene expression during interspecific hybridization

ABSTRACT: Interspecific hybridization often induces epigenetic remodeling that leads to transposon activation, gene expression changes, and loss of imprinting. These genomic changes can be deleterious and lead to postzygotic hybrid incompatibility. In Arabidopsis, loss of genomic imprinting of PHERES1 and presumed failure of Polycomb Repressive Complex is partially responsible for seed inviability observed in A. thaliana X A. arenosa interspecific hybrids. We used this species pair to further analyze the relationship between parent-specific gene expression and postzygotic hybrid incompatibility using two A. thaliana ecotypes, Col-0 and C24, with differential seed survival. We found that maternal imprinting was perturbed for PHERES1, HDG3, and six other genes in both A. thaliana hybrids and paternal

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Luca Comai 

PROVIDER: E-GEOD-56675 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress