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Chromatin organization and cell fate switch respond to positional information in Arabidopsis

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Listed:
  • Silvia Costa

    (John Innes Centre)

  • Peter Shaw

    (John Innes Centre)

Abstract

Many types of plant cell retain their developmental plasticity and have the capacity to switch fate when exposed to a new source of positional information. In the root epidermis of Arabidopsis, cells differentiate in alternating files of hair cells and non-hair cells1,2, in response to positional information and the activity of the homoeodomain transcription factor GLABRA2 (GL2) in future non-hair cells3,4,5,6. Here we show by three-dimensional fluorescence in situ hybridization on intact root epidermal tissue that alternative states of chromatin organization around the GL2 locus are required to control position-dependent cell-type specification. When, as a result of an atypical cell division, a cell is displaced from a hair file into a non-hair file, it switches fate6. We show that during this event the chromatin state around the GL2 locus is not inherited, but is reorganized in the G1 phase of the cell cycle in response to local positional information. This ability to remodel chromatin organization may provide the basis for the plasticity in plant cell fate changes.

Suggested Citation

  • Silvia Costa & Peter Shaw, 2006. "Chromatin organization and cell fate switch respond to positional information in Arabidopsis," Nature, Nature, vol. 439(7075), pages 493-496, January.
    • Handle: RePEc:nat:nature:v:439:y:2006:i:7075:d:10.1038_nature04269
    DOI: 10.1038/nature04269
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    Cited by:

    1. Natasha Saint Savage & Tom Walker & Yana Wieckowski & John Schiefelbein & Liam Dolan & Nicholas A M Monk, 2008. "A Mutual Support Mechanism through Intercellular Movement of CAPRICE and GLABRA3 Can Pattern the Arabidopsis Root Epidermis," PLOS Biology, Public Library of Science, vol. 6(9), pages 1-11, September.
    2. Linhua Sun & Jingru Zhou & Xiao Xu & Yi Liu & Ni Ma & Yutong Liu & Wenchao Nie & Ling Zou & Xing Wang Deng & Hang He, 2024. "Mapping nucleosome-resolution chromatin organization and enhancer-promoter loops in plants using Micro-C-XL," Nature Communications, Nature, vol. 15(1), pages 1-18, December.

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