2020
DOI: 10.1101/2020.06.05.135681
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Abstract: 12Genetically identical plants growing in the same conditions can display heterogeneous phenotypes. 13Whether this phenotypic variability is functional and the mechanisms behind it are unclear. Here we 14use Arabidopsis seed germination time as a model system to examine phenotypic variability. We 15show extensive variation in seed germination time variability between Arabidopsis accessions, and 16 use a multi-parent recombinant inbred population to identify two loci involved in this trait. Both loci 17include … Show more

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Cited by 3 publications
(6 citation statements)
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“…These differences can act as a mechanism to ensure species survival under possible variable, stressful conditions ( Bradford, 2002 ; Mitchell et al, 2017 ; Cortijo and Locke, 2020 ). GA and ABA can act as a bistable switch to control germination, and this switch can amplify variability in germination ( Abley et al, 2020 ). Perhaps briz individuals with altered ABA responses have amplified differences in ABA-GA antagonism during germination, with individuals “flipping” either one way or the other.…”
Section: Discussionmentioning
confidence: 99%
“…These differences can act as a mechanism to ensure species survival under possible variable, stressful conditions ( Bradford, 2002 ; Mitchell et al, 2017 ; Cortijo and Locke, 2020 ). GA and ABA can act as a bistable switch to control germination, and this switch can amplify variability in germination ( Abley et al, 2020 ). Perhaps briz individuals with altered ABA responses have amplified differences in ABA-GA antagonism during germination, with individuals “flipping” either one way or the other.…”
Section: Discussionmentioning
confidence: 99%
“…This regulation, of ABA levels in particular, in turn generates downstream transcriptional variation possibly involved in phenotypic plasticity. Moreover, the authors ruled out a previously hypothesized positional regulatory gradient in the ovary, thus uncoupling a possible developmental influence on dormancy as a confirmation of the effective presence of bet-hedging (Abley et al 2020).…”
Section: Impact On Seed Physiologymentioning
confidence: 96%
“…Seeds subjected to short strong stresses, e.g. heat shock at 49 °C for 30 min, showed differential germination timing that allows part of the seed cohort to survive an unpredictable period of unfavourable environmental conditions (Abley et al 2020). Also, two proteins encoded by FLOWERING LOCUS C (FLC) and FLOWERING LOCUS T (FT) enable A. thaliana mother plants to modulate seed dormancy in the progeny depending on the external temperature, sensed through the epigenetic state of these genes.…”
Section: Genetic Bases Of Bet-hedgingmentioning
confidence: 99%
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