title: Heat can erase epigenetic marks of vernalization in Arabidopsis.
abstract: Vernalization establishes a memory of winter that must be maintained for weeks or months in order to promote flowering the following spring. The stability of the vernalized state varies among plant species and depends on the duration of cold exposure. In Arabidopsis thaliana, winter leads to epigenetic silencing of the floral repressor gene FLOWERING LOCUS C (FLC) and the duration of cold is measured through the dynamics of chromatin modifications during and after cold. The growing conditions encountered post-vernalization are thus critical for the maintenance of the vernalized state. We reported that high temperature leads to devernalization and, consistently, to FLC reactivation in Arabidopsis seedlings. Here we show that the repressive epigenetic mark H3K27me3 decreases at the FLC locus when vernalized seedlings are grown at 30°C, unless they were first exposed to a stabilizing period at 20°C. Ambient temperature thus controls the epigenetic memory of winter.
authors: a University of Liège; Laboratory of Plant Physiology; PhytoSYSTEMS ; Liège , Belgium.
authors: Frédéric
authors: F
authors: Bouché
authors: Nathalie
authors: N
authors: Detry
authors: Claire
authors: C
authors: Périlleux
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism; D003080:Cold Temperature; D044127:Epigenesis, Genetic; D035264:Flowers / Q000254:growth & development*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D006358:Hot Temperature; D026161:MADS Domain Proteins / Q000235:genetics* / Q000378:metabolism; D012621:Seasons
chemical_list: D029681:Arabidopsis Proteins; C418902:At5g10140 protein, Arabidopsis; D026161:MADS Domain Proteins
keywords: Arabidopsis; FLOWERING LOCUS C; Flowering; H3K27me3; H3K4me3; devernalization; epigenetic modifications; vernalization
references: Science. 2000 Oct 13;290(5490):344-7
references: 11030654
references: Genetics. 2005 Jul;170(3):1197-207
references: 15911588
references: Plant Cell. 1999 Mar;11(3):445-58
references: 10072403
references: EMBO J. 2002 Aug 15;21(16):4327-37
references: 12169635
references: Plant Physiol. 2005 Jan;137(1):149-56
references: 15618421
references: Curr Biol. 2013 Sep 9;23(17):R807-11
references: 24028964
references: Nature. 2011 Aug 4;476(7358):105-8
references: 21785438
references: Plant J. 2006 Apr;46(2):183-92
references: 16623882
references: PLoS Genet. 2008;4(8):e1000077
references: 18725930
references: Mol Cell Biol. 2008 Feb;28(4):1348-60
references: 18070919
references: J Theor Biol. 2012 Jun 7;302:6-17
references: 22381539
references: Nat Rev Genet. 2012 Sep;13(9):627-39
references: 22898651
references: Plant Physiol. 1995 May;108(1):157-162
references: 12228459
references: PLoS Genet. 2005 Jul;1(1):109-18
references: 16103920
references: Proc Natl Acad Sci U S A. 2008 Nov 4;105(44):16831-6
references: 18854416
references: Arabidopsis Book. 2014 Feb 12;12:e0171
references: 24653667
references: Genes Dev. 2004 Nov 15;18(22):2774-84
references: 15520273
references: Proc Natl Acad Sci U S A. 2000 Mar 28;97(7):3753-8
references: 10716723
references: Plant J. 2010 Mar;61(6):1001-13
references: 20409274
references: Plant J. 2013 Aug;75(3):390-402
references: 23581257
references: Nature. 2004 Jan 8;427(6970):159-64
references: 14712276
references: Plant Physiol. 2003 Jun;132(2):1107-14
references: 12805638
references: Plant Cell. 1999 May;11(5):949-56
references: 10330478
references: Genes Dev. 2006 Apr 1;20(7):898-912
references: 16600915
references: Proc Natl Acad Sci U S A. 2003 Aug 19;100(17):10102-7
references: 12904584
references: Trends Genet. 2012 Sep;28(9):445-53
references: 22785023
references: Plant Cell. 2008 Oct;20(10):2586-602
references: 18849490
references: Curr Biol. 2007 Nov 20;17(22):1978-83
references: 17980595
references: Nature. 2004 Jan 8;427(6970):164-7
references: 14712277
references: Nat Cell Biol. 2005 Dec;7(12):1256-60
references: 16299497
references: J Exp Bot. 2012 Jul;63(12):4343-8
references: 22685309