Evolutionarily conserved histone methylation dynamics during seed life-cycle transitions

Plants have a remarkable ability to react to seasonal changes by synchronizing life-cycle transitions with environmental conditions. We addressed the question of how transcriptional re-programming occurs in response to an environmental cue that triggers the major life cycle transition from seed dorm...

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Published in:PloS one 2012-12, Vol.7 (12), p.e51532-e51532
Main Authors: Müller, Kerstin, Bouyer, Daniel, Schnittger, Arp, Kermode, Allison R
Format: Article
Language:English
Subjects:
Angiosperms
Annual variations
Arabidopsis
Arabidopsis - genetics
Arabidopsis - growth & development
Arabidopsis - physiology
Arabidopsis Proteins - genetics
Arabidopsis Proteins - metabolism
Arabidopsis thaliana
Biochemistry, Molecular Biology
Biology
Cellular Biology
Chromatin
Chromatin - genetics
Chromatin - physiology
Dormancy
Environmental changes
Environmental conditions
Epigenetics
Evolution, Molecular
Gene expression
Gene Expression Regulation, Plant
Gene silencing
Gene-Environment Interaction
Genomes
Germination
Gymnosperms
Histone-Lysine N-Methyltransferase - genetics
Histone-Lysine N-Methyltransferase - metabolism
Histones - genetics
Histones - metabolism
Life cycle engineering
Life cycles
Life Sciences
Methylation
Molecular biology
Phase transitions
Physcomitrella patens
Plant Dormancy - genetics
Plant Dormancy - physiology
Regulators
Repressor Proteins - genetics
Repressor Proteins - metabolism
Seasonal variations
Seasons
Seedlings
Seedlings - genetics
Seedlings - metabolism
Seedlings - physiology
Seeds
Seeds - growth & development
Seeds - physiology
Synchronism
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description Plants have a remarkable ability to react to seasonal changes by synchronizing life-cycle transitions with environmental conditions. We addressed the question of how transcriptional re-programming occurs in response to an environmental cue that triggers the major life cycle transition from seed dormancy to germination and seedling growth. We elucidated an important mechanistic aspect of this process by following the chromatin dynamics of key regulatory genes with a focus on the two antagonistic marks, H3K4me3 and H3K27me3. Histone methylation patterns of major dormancy regulators changed during the transition to germination and seedling growth. We observed a switch from H3K4me3 and high transcription levels to silencing by the repressive H3K27me3 mark when dormancy was broken through exposure to moist chilling, underscoring that a functional PRC2 complex is necessary for this transition. Moreover, this reciprocal regulation by H3K4me3 and H3K27me3 is evolutionarily conserved from gymnosperms to angiosperms.
doi_str_mv 10.1371/journal.pone.0051532
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subjects Angiosperms
Annual variations
Arabidopsis
Arabidopsis - genetics
Arabidopsis - growth & development
Arabidopsis - physiology
Arabidopsis Proteins - genetics
Arabidopsis Proteins - metabolism
Arabidopsis thaliana
Biochemistry, Molecular Biology
Biology
Cellular Biology
Chromatin
Chromatin - genetics
Chromatin - physiology
Dormancy
Environmental changes
Environmental conditions
Epigenetics
Evolution, Molecular
Gene expression
Gene Expression Regulation, Plant
Gene silencing
Gene-Environment Interaction
Genomes
Germination
Gymnosperms
Histone-Lysine N-Methyltransferase - genetics
Histone-Lysine N-Methyltransferase - metabolism
Histones - genetics
Histones - metabolism
Life cycle engineering
Life cycles
Life Sciences
Methylation
Molecular biology
Phase transitions
Physcomitrella patens
Plant Dormancy - genetics
Plant Dormancy - physiology
Regulators
Repressor Proteins - genetics
Repressor Proteins - metabolism
Seasonal variations
Seasons
Seedlings
Seedlings - genetics
Seedlings - metabolism
Seedlings - physiology
Seeds
Seeds - growth & development
Seeds - physiology
Synchronism
title Evolutionarily conserved histone methylation dynamics during seed life-cycle transitions
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