Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 63, Issue 12, Pages 4343-4348Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/ers157
Keywords
Chromatin; cold response; epigenetic; flowering; LHP1; PRC2; vernalization
Categories
Funding
- Dorothea Bennett Fellowship
- NSF
- USDA
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0950785] Funding Source: National Science Foundation
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Proper flowering time is vital for reproductive fitness in flowering plants. In Arabidopsis, vernalization is mediated primarily through the repression of a MADS box transcription factor, FLOWERING LOCUS C (FLC). The induction of a plant homeodomain-containing protein, VERNALIZATION INSENSITIVE 3 (VIN3), by vernalizing cold is required for proper repression of FLC. One of a myriad of changes that occurs after VIN3 is induced is the establishment of FLC chromatin at a mitotically repressed state due to the enrichment of repressive histone modifications. VIN3 induction by cold is the earliest known event during the vernalization response and includes changes in histone modifications at its chromatin. Here, the current understanding of the vernalization-mediated chromatin changes in Arabidopsis is discussed, with a focus on the roles of shared chromatin-modifying machineries in regulating VIN3 and FLC gene family expression during the course of vernalization.
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