@article{PAR00007635, title = {{M}aternal epigenetic pathways control parental contributions to {A}rabidopsis early embryogenesis}, author = {{A}utran, {D}aphn{\'e} and {B}aroux, {C}. and {R}aissig, {M}.{T}. and {L}enormand, {T}. and {W}ittig, {M}. and {G}rob, {S}. and {S}teimer, {A}. and {B}arann, {M}. and {K}lostermeier, {U}.{C}. and {L}eblanc, {O}livier and {V}ielle-{C}alzada, {J}.{P}. and {R}osenstiel, {P}. and {G}rimanelli, {D}aniel and {G}rossniklaus, {U}.}, editor = {}, language = {{ENG}}, abstract = {{D}efining the contributions and interactions of paternal and maternal genomes during embryo development is critical to understand the fundamental processes involved in hybrid vigor, hybrid sterility, and reproductive isolation. {T}o determine the parental contributions and their regulation during {A}rabidopsis embryogenesis, we combined deep-sequencing-based {RNA} profiling and genetic analyses. {A}t the 2-4 cell stage there is a strong, genome-wide dominance of maternal transcripts, although transcripts are contributed by both parental genomes. {A}t the globular stage the relative paternal contribution is higher, largely due to a gradual activation of the paternal genome. {W}e identified two antagonistic maternal pathways that control these parental contributions. {P}aternal alleles are initially downregulated by the chromatin si{RNA} pathway, linked to {DNA} and histone methylation, whereas transcriptional activation requires maternal activity of the histone chaperone complex {CAF}1. {O}ur results define maternal epigenetic pathways controlling the parental contributions in plant embryos, which are distinct from those regulating genomic imprinting.}, keywords = {}, booktitle = {}, journal = {{C}ell}, volume = {145}, numero = {5}, pages = {707--719}, ISSN = {0092-8674}, year = {2011}, DOI = {10.1016/j.cell.2011.04.014}, URL = {https://www.documentation.ird.fr/hor/{PAR}00007635}, }