Cited by 377Plant Molecular Biology ResearchFlowering Plant Growth and CultivationLight effects on plants

PEP1 regulates perennial flowering in Arabis alpina

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Wang, Renhou, Farrona, Sara, Vincent, Coral, Joecker, Anika, Schoof, Heiko, Turck, Franziska, Alonso-Blanco, Carlos, Coupland, George +1 more·2009·Nature

Abstract

Annual plants complete their life cycle in one year and initiate flowering only once, whereas perennials live for many years and flower repeatedly. How perennials undergo repeated cycles of vegetative growth and flowering that are synchronized to the changing seasons has not been extensively studied. Flowering is best understood in annual Arabidopsis thaliana, but many closely related species, such as Arabis alpina, are perennials. We identified the A. alpina mutant perpetual flowering 1 (pep1), and showed that PEP1 contributes to three perennial traits. It limits the duration of flowering, facilitating a return to vegetative development, prevents some branches from undergoing the floral transition allowing polycarpic growth habit, and confers a flowering response to winter temperatures that restricts flowering to spring. Here we show that PEP1 is the orthologue of the A. thaliana gene FLOWERING LOCUS C (FLC). The FLC transcription factor inhibits flowering until A. thaliana is exposed to winter temperatures, which trigger chromatin modifications that stably repress FLC transcription. In contrast, PEP1 is only transiently repressed by low temperatures, causing repeated seasonal cycles of repression and activation of PEP1 transcription that allow it to carry out functions characteristic of the cyclical life history of perennials. The patterns of chromatin modifications at FLC and PEP1 differ correlating with their distinct expression patterns. Thus we describe a critical mechanism by which flowering regulation differs between related perennial and annual species, and propose that differences in chromatin regulation contribute to this variation.

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Crossref · 10.1038/nature07988

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  • Some flowering time genes that contribute to perenniality seem to be conserved between monocots and dicots, in a way that root architecture is not.

    “though at least some flowering time genes that contribute to perenniality seem to be conserved between monocots and dicots (Wang et al., 2009;Higgins et al., 2010), in a way that root architecture is not (see above).”

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Authors
Wang, R., Farrona, S., Vincent, C., Joecker, A., Schoof, H., Turck, F., Alonso-Blanco, C., Coupland, G., & Albani, M. C.
Affiliations
Max Planck Institute for Plant Breeding Research (DE)
Corresponding author
  • Coupland, George
  • Albani, Maria C.
Venue
Nature
Published
2009-04-15
Volume
459
Issue
7245
Pages
423-427
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2158386692
Cited by
376
References
41
Citations by year
2026: 18 · 2025: 15 · 2024: 14 · 2023: 14 · 2022: 16 · 2021: 22 · 2020: 28 · 2019: 29 · 2018: 24 · 2017: 21 · 2016: 21 · 2015: 20 · 2014: 20 · 2013: 31 · 2012: 23
FWCI
33.12
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
Funders
Max-Planck-Gesellschaft
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Flowering Plant Growth and Cultivation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
Keywords
Pep-1, Arabis alpina, FLOWERING LOCUS C, floral repressor, flowering duration, floral induction, polycarpy, vernalization, histone modifications, chromatin modification, spring flowering, Arabidopsis thaliana
MeSH terms
Chromatin, Histones, Methylation, Molecular Sequence Data, Mutation, Periodicity, Plant Proteins, Genes, Plant, Arabidopsis, Gene Expression Regulation, Plant, MADS Domain Proteins, Arabidopsis Proteins, Arabis, Flowers

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