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      An efficient screen for reproductive pathways using mature seeds of monocots and dicots

      , ,

      The Plant Journal

      Wiley-Blackwell

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          Most cited references 44

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          Apomixis: Embryo Sacs and Embryos Formed without Meiosis or Fertilization in Ovules.

           A Koltunow (1993)
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            Mutations in FIE, a WD polycomb group gene, allow endosperm development without fertilization.

            A fundamental problem in biology is to understand how fertilization initiates reproductive development. Higher plant reproduction is unique because two fertilization events are required for sexual reproduction. First, a sperm must fuse with the egg to form an embryo. A second sperm must then fuse with the adjacent central cell nucleus that replicates to form an endosperm, which is the support tissue required for embryo and/or seedling development. Here, we report cloning of the Arabidopsis FERTILIZATION-INDEPENDENT ENDOSPERM (FIE) gene. The FIE protein is a homolog of the WD motif-containing Polycomb proteins from Drosophila and mammals. These proteins function as repressors of homeotic genes. A female gametophyte with a loss-of-function allele of fie undergoes replication of the central cell nucleus and initiates endosperm development without fertilization. These results suggest that the FIE Polycomb protein functions to suppress a critical aspect of early plant reproduction, namely, endosperm development, until fertilization occurs.
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              Regulation of gene expression during plant embryogenesis.

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                Author and article information

                Journal
                The Plant Journal
                Plant J
                Wiley-Blackwell
                0960-7412
                1365-313X
                January 2000
                January 2000
                : 21
                : 1
                : 97-108
                Article
                10.1046/j.1365-313x.2000.00647.x
                © 2000

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