Cold-induced silencing by long antisense transcripts of an Arabidopsis Polycomb target

Szymon Swiezewski, Fuquan Liu, Andreas Magusin and Caroline Dean ()
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Szymon Swiezewski: John Innes Centre, Colney, Norwich, NR4 7UH, UK
Fuquan Liu: John Innes Centre, Colney, Norwich, NR4 7UH, UK
Andreas Magusin: John Innes Centre, Colney, Norwich, NR4 7UH, UK
Caroline Dean: John Innes Centre, Colney, Norwich, NR4 7UH, UK

Nature, 2009, vol. 462, issue 7274, 799-802

Abstract: Regulatory RNAs go to seed Vernalization, the process by which plants acquire the ability to flower on cue in the spring following exposure to winter cold, is a key adaptive trait in plants that has a significant impact on agricultural practices. The Arabidopsis floral repressor FLC is silenced by vernalization in a process mediated by Polycomb regulatory proteins. Now non-coding antisense RNA transcripts of FLC are shown to be present in cold-treated seeds and responsive to temperature changes, suggesting a possible role in cold sensing and FLC silencing. Antisense transcription events of this type, originating from 3′ ends of genes, might be a general mechanism of regulating the corresponding sense transcription.

Date: 2009
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DOI: 10.1038/nature08618

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