Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.

Genes do not act in isolation, and the effects of a specific variant at one locus can often be greatly modified by polymorphic variants at other loci. A good example is FLOWERING LOCUS C (FLC), which has been inferred to explain much of the flowering time variation in Arabidopsis thaliana. We use a...

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Main Authors: Ulrich Lutz, Ilja Bezrukov, Rebecca Schwab, Wei Yuan, Marius Kollmar, Detlef Weigel
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-06-01
Series:PLoS Biology
Online Access:https://doi.org/10.1371/journal.pbio.3003226
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author Ulrich Lutz
Ilja Bezrukov
Rebecca Schwab
Wei Yuan
Marius Kollmar
Detlef Weigel
author_facet Ulrich Lutz
Ilja Bezrukov
Rebecca Schwab
Wei Yuan
Marius Kollmar
Detlef Weigel
author_sort Ulrich Lutz
collection DOAJ
description Genes do not act in isolation, and the effects of a specific variant at one locus can often be greatly modified by polymorphic variants at other loci. A good example is FLOWERING LOCUS C (FLC), which has been inferred to explain much of the flowering time variation in Arabidopsis thaliana. We use a set of 62 flc species-wide mutants to document pleiotropic, genotype-dependent effects for FLC on flowering as well as several other traits. Time to flowering was greatly reduced in all mutants, with the remaining variation explained mainly by allelic variation at the FLC target FT. Analysis of FT sequence variation suggested that extremely early combinations of FLC and FT alleles should exist in the wild, which we confirmed by targeted collections. Our study provides a proof of concept on how pan-genetic analysis of hub genes can reveal the true extent of genetic networks in a species.
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publishDate 2025-06-01
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spelling doaj-art-da6a0a8f64c343fcb624289664caa4da2025-08-20T03:13:21ZengPublic Library of Science (PLoS)PLoS Biology1544-91731545-78852025-06-01236e300322610.1371/journal.pbio.3003226Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.Ulrich LutzIlja BezrukovRebecca SchwabWei YuanMarius KollmarDetlef WeigelGenes do not act in isolation, and the effects of a specific variant at one locus can often be greatly modified by polymorphic variants at other loci. A good example is FLOWERING LOCUS C (FLC), which has been inferred to explain much of the flowering time variation in Arabidopsis thaliana. We use a set of 62 flc species-wide mutants to document pleiotropic, genotype-dependent effects for FLC on flowering as well as several other traits. Time to flowering was greatly reduced in all mutants, with the remaining variation explained mainly by allelic variation at the FLC target FT. Analysis of FT sequence variation suggested that extremely early combinations of FLC and FT alleles should exist in the wild, which we confirmed by targeted collections. Our study provides a proof of concept on how pan-genetic analysis of hub genes can reveal the true extent of genetic networks in a species.https://doi.org/10.1371/journal.pbio.3003226
spellingShingle Ulrich Lutz
Ilja Bezrukov
Rebecca Schwab
Wei Yuan
Marius Kollmar
Detlef Weigel
Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.
PLoS Biology
title Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.
title_full Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.
title_fullStr Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.
title_full_unstemmed Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.
title_short Species-wide gene editing of a flowering regulator reveals hidden phenotypic variation.
title_sort species wide gene editing of a flowering regulator reveals hidden phenotypic variation
url https://doi.org/10.1371/journal.pbio.3003226
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