Transcriptional repression specifies the central cell for double fertilization

Proceedings of the National Academy of Sciences of the United States of America
Meng-Xia ZhangHong-Ju Li

Abstract

Double fertilization is a key innovation for the evolutionary success of angiosperms by which the two fertilized female gametes, the egg cell and central cell, generate the embryo and endosperm, respectively. The female gametophyte (embryo sac) enclosed in the sporophyte is derived from a one-celled haploid cell lineage. It undergoes successive events of mitotic divisions, cellularization, and cell specification to give rise to the mature embryo sac, which contains the two female gametes accompanied by two types of accessory cells, namely synergids and antipodals. How the cell fate of the central cell is specified has long been equivocal and is further complicated by the structural diversity of female gametophyte across plant taxa. Here, MADS-box protein AGL80 was verified as a transcriptional repressor that directly suppresses the expression of accessory cell-specific genes to specify the central cell. Further genetic rescue and phylogenetic assay of the AGL80 orthologs revealed a possible conserved mechanism in the Brassicaceae family. Results from this study provide insight into the molecular determination of the second female gamete cell in Brassicaceae.

References

Sep 13, 2002·Genome Biology·Célia BarouxUeli Grossniklaus
May 30, 2003·Molecular Genetics and Genomics : MGG·J HejátkoB Brzobohatý
Apr 13, 2004·The Plant Cell·Ramin Yadegari, Gary N Drews
Apr 16, 2004·The Plant Cell·William E Friedman, Joseph H Williams
Oct 11, 2005·The Plant Cell·Ryushiro D KasaharaGary N Drews
Jun 27, 2006·The Plant Cell·Michael F PortereikoGary N Drews
Mar 1, 2007·PLoS Biology·Rita Gross-HardtUeli Grossniklaus
Jun 9, 2007·Current Biology : CB·Mathieu IngouffFrédéric Berger
Dec 7, 2007·The Plant Cell·Yan-Hong ChenWei-Cai Yang
Apr 16, 2008·The Plant Journal : for Cell and Molecular Biology·Jayson A PunwaniGary N Drews
Jul 5, 2008·Plant Physiology·Joshua G SteffenGary N Drews
Aug 16, 2008·The Plant Journal : for Cell and Molecular Biology·Cordula MollRita Gross-Hardt
Mar 3, 2010·Annual Review of Plant Biology·Wei-Cai YangYan-Hong Chen
Oct 5, 2010·Current Opinion in Plant Biology·Dong-Qiao Shi, Wei-Cai Yang
Nov 9, 2011·Plant Physiology·Barry CausierBrendan Davies
Nov 19, 2015·Frontiers in Plant Science·Marc W SchmidUeli Grossniklaus
Apr 6, 2016·Developmental Cell·Li YuanVenkatesan Sundaresan

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Citations

Nov 17, 2020·Frontiers in Plant Science·Hong-Ju Li, Wei-Cai Yang
Jun 29, 2021·Journal of Experimental Botany·Pichang GongChaoying He

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