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Vernalization and epigenetics: how plants remember winter.

Author information

Affiliations

  • 1. Department of Biochemistry, University of Wisconsin-Madison, 53706, USA.
      Authors
    • Sung S 1
    (1 author)

Current Opinion in Plant Biology, 01 Feb 2004, 7(1):4-10
https://doi.org/10.1016/j.pbi.2003.11.010 PMID: 14732435 

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Abstract 

One of the remarkable aspects of the promotion of flowering by vernalization is that plants have evolved the ability to measure a complete winter season of cold and to 'remember' this prior cold exposure in the spring. Recent work in Arabidopsis demonstrates the molecular basis of this memory of winter: vernalization causes changes in the chromatin structure of a flowering repressor gene, FLOWERING LOCUS C (FLC), that switch this gene into a repressed state that is mitotically stable. A key component of the vernalization pathway, VERNALIZATION INSENSITIVE3 (VIN3), which is a PHD-domain-containing protein, is induced only after a prolonged period of cold. VIN3 is involved in initiating the modification of FLC chromatin structure. The stable silencing of FLC also requires the DNA-binding protein VERNALIZATION1 (VRN1) and the polycomb-group protein VRN2.

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Read article at publisher's site: https://doi.org/10.1016/j.pbi.2003.11.010

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