Early paternal gene activity in Arabidopsis

Jean-Philippe Vielle-Calzada, Ramamurthy Baskar and Ueli Grossniklaus ()
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Jean-Philippe Vielle-Calzada: Cinvestav-Plant Biotechnology Unit
Ramamurthy Baskar: Institute of Plant Biology, University of Zürich
Ueli Grossniklaus: Institute of Plant Biology, University of Zürich

Nature, 2001, vol. 414, issue 6865, 710-710

Abstract: Abstract Our results, based on a study of 20 loci, indicate that the contributions by the maternal and paternal genome to early seed development in Arabidopsis are not equivalent, as evidenced by a lack of detectable paternal gene activity during the first few divisions after fertilization. As these loci are distributed throughout the genome, we inferred that early embryo and endosperm development are mainly under maternal control, but this may not be true for every locus and, as in X-chromosome inactivation1, we would expect some loci to escape this silencing mechanism. We did not claim that maternal control is complete, but suggested that the activity of many genes during early embryo and endosperm formation could depend solely on transcription of the maternally inherited allele before and/or after fertilization.

Date: 2001
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DOI: 10.1038/414710a

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