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Title

Dormancy-specific imprinting underlies maternal inheritance of seed dormancy in Arabidopsis thaliana

Authors
Susaki, Daichi
Kinoshita, Tetsu
Published in eLife. 2016, vol. 5, no. 3, p. 538-546
Abstract Mature seed dormancy is a vital plant trait that prevents germination out of season. In Arabidopsis, the trait can be maternally regulated but the underlying mechanisms sustaining this regulation, its general occurrence and its biological significance among accessions are poorly understood. Upon seed imbibition, the endosperm is essential to repress the germination of dormant seeds. Investigation of genomic imprinting in the mature seed endosperm led us to identify a novel set of imprinted genes that are expressed upon seed imbibition. Remarkably, programs of imprinted gene expression are adapted according to the dormancy status of the seed. We provide direct evidence that imprinted genes play a role in regulating germination processes and that preferential maternal allelic expression can implement maternal inheritance of seed dormancy levels.
Keywords Arabidopsis/physiologyGenomic ImprintingMaternal InheritancePlant Dormancy
Identifiers
PMID: 28005006
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Article (Published version) (4.2 MB) - public document Free access
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Research group Groupe Lopez-Molina
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PISKUREWICZ, Urszula et al. Dormancy-specific imprinting underlies maternal inheritance of seed dormancy in Arabidopsis thaliana. In: eLife, 2016, vol. 5, n° 3, p. 538-546. doi: 10.7554/eLife.19573 https://archive-ouverte.unige.ch/unige:136245

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Deposited on : 2020-05-27

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