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Natural variation in autumn expression is the major adaptive determinant distinguishing arabidopsis flc haplotypes

Hepworth, Jo ; Antoniou-Kourounioti, Rea L. ; Berggren, Kristina ; Selga, Catja ; Tudor, Eleri H. ; Yates, Bryony ; Cox, Deborah ; Harris, Barley Rose Collier ; Irwin, Judith A. and Howard, Martin , et al. (2020) In eLife 9.
Abstract

In Arabidopsis thaliana, winter is registered during vernalization through the temperature-dependent repression and epigenetic silencing of floral repressor FLOWERING LOCUS C (FLC). Natural Arabidopsis accessions show considerable variation in vernalization. However, which aspect of the FLC repression mechanism is most important for adaptation to different environments is unclear. By analysing FLC dynamics in natural variants and mutants throughout winter in three field sites, we find that autumnal FLC expression, rather than epigenetic silencing, is the major variable conferred by the distinct Arabidopsis FLChaplotypes. This variation influences flowering responses of Arabidopsis accessions resulting in an interplay between promotion... (More)

In Arabidopsis thaliana, winter is registered during vernalization through the temperature-dependent repression and epigenetic silencing of floral repressor FLOWERING LOCUS C (FLC). Natural Arabidopsis accessions show considerable variation in vernalization. However, which aspect of the FLC repression mechanism is most important for adaptation to different environments is unclear. By analysing FLC dynamics in natural variants and mutants throughout winter in three field sites, we find that autumnal FLC expression, rather than epigenetic silencing, is the major variable conferred by the distinct Arabidopsis FLChaplotypes. This variation influences flowering responses of Arabidopsis accessions resulting in an interplay between promotion and delay of flowering in different climates to balance survival and, through a post-vernalization effect, reproductive output. These data reveal how expression variation through non-coding cis variation at FLC has enabled Arabidopsis accessions to adapt to different climatic conditions and year-on-year fluctuations.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
eLife
volume
9
article number
e57671
pages
30 pages
publisher
eLife Sciences Publications
external identifiers
  • scopus:85091808004
  • pmid:32902380
ISSN
2050-084X
DOI
10.7554/ELIFE.57671
language
English
LU publication?
yes
id
bab228e6-a23e-4540-969b-72f1249fd33d
date added to LUP
2020-11-03 11:24:12
date last changed
2024-06-28 02:45:11
@article{bab228e6-a23e-4540-969b-72f1249fd33d,
  abstract     = {{<p>In Arabidopsis thaliana, winter is registered during vernalization through the temperature-dependent repression and epigenetic silencing of floral repressor FLOWERING LOCUS C (FLC). Natural Arabidopsis accessions show considerable variation in vernalization. However, which aspect of the FLC repression mechanism is most important for adaptation to different environments is unclear. By analysing FLC dynamics in natural variants and mutants throughout winter in three field sites, we find that autumnal FLC expression, rather than epigenetic silencing, is the major variable conferred by the distinct Arabidopsis FLChaplotypes. This variation influences flowering responses of Arabidopsis accessions resulting in an interplay between promotion and delay of flowering in different climates to balance survival and, through a post-vernalization effect, reproductive output. These data reveal how expression variation through non-coding cis variation at FLC has enabled Arabidopsis accessions to adapt to different climatic conditions and year-on-year fluctuations.</p>}},
  author       = {{Hepworth, Jo and Antoniou-Kourounioti, Rea L. and Berggren, Kristina and Selga, Catja and Tudor, Eleri H. and Yates, Bryony and Cox, Deborah and Harris, Barley Rose Collier and Irwin, Judith A. and Howard, Martin and Säll, Torbjörn and Holm, Svante and Dean, Caroline}},
  issn         = {{2050-084X}},
  language     = {{eng}},
  publisher    = {{eLife Sciences Publications}},
  series       = {{eLife}},
  title        = {{Natural variation in autumn expression is the major adaptive determinant distinguishing arabidopsis flc haplotypes}},
  url          = {{http://dx.doi.org/10.7554/ELIFE.57671}},
  doi          = {{10.7554/ELIFE.57671}},
  volume       = {{9}},
  year         = {{2020}},
}