Identification of a Devernalization Inducer by Chemical Screening Approaches in Arabidopsis thaliana

Vernalization is the promotion of flowering after prolonged exposure to cold. In , vernalization induces epigenetic silencing of the floral repressor gene ( ). The repressive epigenetic mark trimethylation of lysine 27 on histone H3 proteins (H3K27me3) is a critical contributor to the epigenetic sil...

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Published inFrontiers in plant science Vol. 12; p. 634068
Main Authors Shirakawa, Makoto, Morisaki, Yukaho, Gan, Eng-Seng, Sato, Ayato, Ito, Toshiro
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 04.02.2021
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Abstract Vernalization is the promotion of flowering after prolonged exposure to cold. In , vernalization induces epigenetic silencing of the floral repressor gene ( ). The repressive epigenetic mark trimethylation of lysine 27 on histone H3 proteins (H3K27me3) is a critical contributor to the epigenetic silencing of . Interestingly, the deposited H3K27me3 in the locus can be erased by short-term high-temperature treatment. This is referred to as devernalization. In this study, we identified a novel chemical compound, 4-Isoxazolecarboxylic acid, 3,5-dimethyl-2-(4-fluorophenyl)-4-isoxazole carboxylic acid 1-methyl-2-oxoethyl ester named as DEVERNALIZER01 (DVR01), which induces devernalization in seedlings, by an -luciferase reporter-based high-throughput screening assay. DVR01 decreased the amount of H3K27me3 in the locus in vernalized plants, resulting in the upregulation of in the whole plant, including the vasculature and meristem, where FLC represses floral induction genes. We also showed that a 2-week treatment with DVR01 reverted plants with a vernalized status back to a fully non-vernalized status. Collectively, this study provides a novel structure of DVR01, which modulates devernalization via demethylation of H3K27me3 in the locus.
AbstractList Vernalization is the promotion of flowering after prolonged exposure to cold. In , vernalization induces epigenetic silencing of the floral repressor gene ( ). The repressive epigenetic mark trimethylation of lysine 27 on histone H3 proteins (H3K27me3) is a critical contributor to the epigenetic silencing of . Interestingly, the deposited H3K27me3 in the locus can be erased by short-term high-temperature treatment. This is referred to as devernalization. In this study, we identified a novel chemical compound, 4-Isoxazolecarboxylic acid, 3,5-dimethyl-2-(4-fluorophenyl)-4-isoxazole carboxylic acid 1-methyl-2-oxoethyl ester named as DEVERNALIZER01 (DVR01), which induces devernalization in seedlings, by an -luciferase reporter-based high-throughput screening assay. DVR01 decreased the amount of H3K27me3 in the locus in vernalized plants, resulting in the upregulation of in the whole plant, including the vasculature and meristem, where FLC represses floral induction genes. We also showed that a 2-week treatment with DVR01 reverted plants with a vernalized status back to a fully non-vernalized status. Collectively, this study provides a novel structure of DVR01, which modulates devernalization via demethylation of H3K27me3 in the locus.
Vernalization is the promotion of flowering after prolonged exposure to cold. In Arabidopsis thaliana, vernalization induces epigenetic silencing of the floral repressor gene FLOWERING LOCUS C (FLC). The repressive epigenetic mark trimethylation of lysine 27 on histone H3 proteins (H3K27me3) is a critical contributor to the epigenetic silencing of FLC. Interestingly, the deposited H3K27me3 in the FLC locus can be erased by short-term high-temperature treatment. This is referred to as devernalization. In this study, we identified a novel chemical compound, 4-Isoxazolecarboxylic acid, 3,5-dimethyl-2-(4-fluorophenyl)-4-isoxazole carboxylic acid 1-methyl-2-oxoethyl ester named as DEVERNALIZER01 (DVR01), which induces devernalization in Arabidopsis seedlings, by an FLC-luciferase reporter-based high-throughput screening assay. DVR01 decreased the amount of H3K27me3 in the FLC locus in vernalized plants, resulting in the upregulation of FLC in the whole plant, including the vasculature and meristem, where FLC represses floral induction genes. We also showed that a 2-week treatment with DVR01 reverted plants with a vernalized status back to a fully non-vernalized status. Collectively, this study provides a novel structure of DVR01, which modulates devernalization via demethylation of H3K27me3 in the FLC locus.
Vernalization is the promotion of flowering after prolonged exposure to cold. In Arabidopsis thaliana , vernalization induces epigenetic silencing of the floral repressor gene FLOWERING LOCUS C ( FLC ). The repressive epigenetic mark trimethylation of lysine 27 on histone H3 proteins (H3K27me3) is a critical contributor to the epigenetic silencing of FLC . Interestingly, the deposited H3K27me3 in the FLC locus can be erased by short-term high-temperature treatment. This is referred to as devernalization. In this study, we identified a novel chemical compound, 4-Isoxazolecarboxylic acid, 3,5-dimethyl-2-(4-fluorophenyl)-4-isoxazole carboxylic acid 1-methyl-2-oxoethyl ester named as DEVERNALIZER01 (DVR01), which induces devernalization in Arabidopsis seedlings, by an FLC -luciferase reporter-based high-throughput screening assay. DVR01 decreased the amount of H3K27me3 in the FLC locus in vernalized plants, resulting in the upregulation of FLC in the whole plant, including the vasculature and meristem, where FLC represses floral induction genes. We also showed that a 2-week treatment with DVR01 reverted plants with a vernalized status back to a fully non-vernalized status. Collectively, this study provides a novel structure of DVR01, which modulates devernalization via demethylation of H3K27me3 in the FLC locus.
Author Morisaki, Yukaho
Gan, Eng-Seng
Ito, Toshiro
Shirakawa, Makoto
Sato, Ayato
AuthorAffiliation 1 Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology , Ikoma , Japan
2 Temasek Life Sciences Laboratory, National University of Singapore , Singapore , Singapore
3 Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University , Nagoya , Japan
AuthorAffiliation_xml – name: 1 Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology , Ikoma , Japan
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/33613612$$D View this record in MEDLINE/PubMed
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Copyright Copyright © 2021 Shirakawa, Morisaki, Gan, Sato and Ito.
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Keywords devernalization
Arabidopsis
high-throughput screening
vernalization
FLC
chemical screening
epigenetics
H3K27me3
Language English
License Copyright © 2021 Shirakawa, Morisaki, Gan, Sato and Ito.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
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Edited by: Maria Helena S. Goldman, University of São Paulo, Brazil
Reviewed by: Ryo Fujimoto, Kobe University, Japan; Chris Helliwell, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia
ORCID: Eng-Seng Gan, orcid.org/0000-0001-9753-4524
This article was submitted to Plant Development and EvoDevo, a section of the journal Frontiers in Plant Science
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Snippet Vernalization is the promotion of flowering after prolonged exposure to cold. In , vernalization induces epigenetic silencing of the floral repressor gene ( )....
Vernalization is the promotion of flowering after prolonged exposure to cold. In Arabidopsis thaliana , vernalization induces epigenetic silencing of the...
Vernalization is the promotion of flowering after prolonged exposure to cold. In Arabidopsis thaliana, vernalization induces epigenetic silencing of the floral...
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StartPage 634068
SubjectTerms chemical screening
devernalization
epigenetics
FLC
H3K27me3
Plant Science
vernalization
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Title Identification of a Devernalization Inducer by Chemical Screening Approaches in Arabidopsis thaliana
URI https://www.ncbi.nlm.nih.gov/pubmed/33613612
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https://pubmed.ncbi.nlm.nih.gov/PMC7890032
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