Research article - Peer-reviewed, 2016
Auxin production in the endosperm drives seed coat development in Arabidopsis
Figueiredo, Duarte D.; Batista, Rita A.; Roszakt, Pawel J.; Hennig, Lars; Kohler, ClaudiaAbstract
In flowering plants, seed development is initiated by the fusion of the maternal egg and central cells with two paternal sperm cells, leading to the formation of embryo and endosperm, respectively. The fertilization products are surrounded by the maternally derived seed coat, whose development prior to fertilization is blocked by epigenetic regulators belonging to the Polycomb Group (PcG) protein family. Here we show that fertilization of the central cell results in the production of auxin and most likely its export to the maternal tissues, which drives seed coat development by removing PcG function. We furthermore show that mutants for the MADS-box transcription factor AGL62 have an impaired transport of auxin from the endosperm to the integuments, which results in seed abortion. We propose that AGL62 regulates auxin transport from the endosperm to the integuments, leading to the removal of the PcG block on seed coat development.Published in
eLife2016, volume: 5, article number: e20542
Authors' information
Figueiredo, Duarte
Swedish University of Agricultural Sciences, Department of Plant Biology
Swedish University of Agricultural Sciences, Department of Plant Biology
Roszak, Pawel
Swedish University of Agricultural Sciences, Department of Plant Biology
Hennig, Lars (Hennig, Lars)
Swedish University of Agricultural Sciences, Department of Plant Biology
Swedish University of Agricultural Sciences, Department of Plant Biology
UKÄ Subject classification
Cell Biology
Developmental Biology
Publication Identifiers
DOI: https://doi.org/10.7554/eLife.20542
URI (permanent link to this page)
https://res.slu.se/id/publ/80998