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dc.contributor.authorWang, Renhou-
dc.contributor.authorFarrona, Sara-
dc.contributor.authorVincent, Coral-
dc.contributor.authorJoecker, Anika-
dc.contributor.authorSchoof, Heiko-
dc.contributor.authorTurck, Franziska-
dc.contributor.authorAlonso-Blanco, Carlos-
dc.contributor.authorCoupland, George-
dc.contributor.authorAlbani, Maria C-
dc.date.accessioned2009-04-16T17:46:32Z-
dc.date.available2009-04-16T17:46:32Z-
dc.date.issued2009-04-15-
dc.identifier.citationNature (2009), doi: 10.1038/nature07988en_US
dc.identifier.issn0028-0836-
dc.identifier.urihttp://hdl.handle.net/10261/12362-
dc.description6 pages, 4 figures.-- Supporting information (Suppl. figures S1-S8, tables S1-S2) available at: http://www.nature.com/nature/journal/vaop/ncurrent/suppinfo/nature07988.htmlen_US
dc.descriptionThe GenBank accession number for the PEP1 BAC sequence is FJ543377, and for the PEP1 cDNA sequence is FJ755930.-
dc.description.abstractAnnual 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.en_US
dc.description.sponsorshipThe laboratories of H.S. and G.C. are partly funded by a core grant from the Max Planck Society.en_US
dc.format.extent737506 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.rightsclosedAccessen_US
dc.titlePEP1 regulates perennial flowering in Arabis alpinaen_US
dc.typeartículoen_US
dc.identifier.doi10.1038/nature07988-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1038/nature07988en_US
dc.identifier.e-issn1476-4687-
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