Abstract
During plant embryogenesis, a simple body plan consisting of shoot and root meristem that are connected by the embryo axis is set up by the first few rounds of cell divisions after fertilization. Postembryonically, the elaborate architecture of plants is created from stem cell populations of both meristems. Here, we address how the main axis (apical-basal) of the plant embryo is established from the single-celled zygote and the role that the asymmetric division of the zygote plays in this process. We will mainly draw on examples from the model plant Arabidopsis, for which several key regulators have been identified during the last years.
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Acknowledgments
We thank Julien Bellis, Chulmin Park, and Leron Katsir for helpful comments on the manuscript. We would like to apologize to those colleagues whose valuable work was not discussed due to space constraints. We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft (Arabidopsis Functional Genomic Network) and the EU (SIREN) to T.L., and from the GRK1305 fellowship to Z.Z.
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Communicated by Thomas Dresselhaus.
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Zhang, Z., Laux, T. The asymmetric division of the Arabidopsis zygote: from cell polarity to an embryo axis. Sex Plant Reprod 24, 161–169 (2011). https://doi.org/10.1007/s00497-010-0160-x
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DOI: https://doi.org/10.1007/s00497-010-0160-x