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Nuclear behavior, cell polarity, and cell specification in the female gametophyte

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Abstract

In flowering plants, the haploid gamete-forming generation comprises only a few cells and develops within the reproductive organs of the flower. The female gametophyte has become an attractive model system to study the genetic and molecular mechanisms involved in pattern formation and gamete specification. It originates from a single haploid spore through three free nuclear division cycles, giving rise to four different cell types. Research over recent years has allowed to catch a glimpse of the mechanisms that establish the distinct cell identities and suggests dynamic cell–cell communication to orchestrate not only development among the cells of the female gametophyte but also the interaction between male and female gametophytes. Additionally, cytological observations and mutant studies have highlighted the importance of nuclei migration- and positioning for patterning the female gametophyte. Here we review current knowledge on the mechanisms of cell specification in the female gametophyte, emphasizing the importance of positional cues for the establishment of distinct molecular profiles.

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Authors and Affiliations

  1. Cell Biology and Plant Biochemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany

    Stefanie Sprunck

  2. ZMBP Developmental Genetics, University of Tübingen, Auf der Morgenstelle 1, 72076, Tübingen, Germany

    Rita Groß-Hardt

Authors
  1. Stefanie Sprunck
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  2. Rita Groß-Hardt
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Correspondence to Stefanie Sprunck.

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Communicated by Scott Russell.

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Sprunck, S., Groß-Hardt, R. Nuclear behavior, cell polarity, and cell specification in the female gametophyte. Sex Plant Reprod 24, 123–136 (2011). https://doi.org/10.1007/s00497-011-0161-4

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  • DOI: https://doi.org/10.1007/s00497-011-0161-4

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