Plant, Cell and Environment 35: 1769-1786 (2012)

Molecular mechanisms of seed dormancy

Kai Graeber*, Kazumi Nakabayashi*, Emma Miatton, Gerhard Leubner-Metzger, Wim J. J. Soppe

University of Freiburg, Faculty of Biology, Institute for Biology II, Botany / Plant Physiology, Schänzlestr. 1, D-79104 Freiburg, Germany (KG, GLM)
Department of Plant Breeding & Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Cologne, Germany (KN, EM, WM)
School of Biological Sciences, Plant Molecular Science, Royal Holloway, University of London, Egham, Surrey TW20 0EX, Uk (GLM); Web: 'The Seed Biology Place' -
*Equal contribution

Received 2012; Revised 2012; Accepted 2012
Article first published online: 19 June 2012
DOI 10.1111/j.1365-3040.2012.02542.x

Table 1.  Genes involved in dormancy regulation.

Gene Encoded protein Biological function Species
Maturation regulators   
 ABI3/VP1 B3 TF Maturation regulation Arabidopsis, rice
 FUS3 B3 TF Maturation regulation Arabidopsis
 LEC1 HAP3 subunit of NF-Y TF Maturation regulation Arabidopsis
 LEC2 B3 TF Maturation regulation Arabidopsis
 VP8/PLA3/GO/AMP1 Glutamate carboxypeptidase Arabidopsis, rice, maize
 SUA Splicing factor Regulation of alternative splicing of ABI3 Arabidopsis
Hormone regulators   
 PYR, PYL/RCAR ABA receptors ABA perception Arabidopsis
 ABI1, ABI2, HAB1, AHG3 Protein phosphatase 2C Negative regulators of ABA signalling Arabidopsis
 SnRK2.2, 2.3, 2.6 Protein kinase Positive ABA signalling Arabidopsis
 KAI1/MAX2 F-Box protein Strigolactone/karrikin signalling Arabidopsis
Other dormancy genes   
 DOG1 Unknown protein Arabidopsis
 Sdr4 Unknown protein Rice
 qSD7-1/qPC7/Rc/TT8 bHLH TF Flavonoid synthesis Arabidopsis, rice
 DEP C3HC4 RING finger Arabidopsis
 AtHB20 Homeobox TF Arabidopsis
 CBF AP2 TF Cold response Arabidopsis
 MFT Phosphatidylethanolamine-binding protein Arabidopsis, wheat
 FLC MADS-box TF Repressor of floral transition Arabidopsis
Epigenetic regulators   
 HUB1, HUB2 C3HC4 RING finger Histone H2B monoubiquitination Arabidopsis
 RDO2 Transcription elongation factor SII Transcription elongation Arabidopsis
VIP4, VIP5, ELF7, ELF8, ATXR7 PAF1 components Transcription Arabidopsis
 EFS Histone H3 methyltransferase H3K9 methylation Arabidopsis
 FIE Component of PRC2 H3K27 trimethylation Arabidopsis
 KYP/SUVH4, SUVH5 Histone methyltransferase H3K9 methylation Arabidopsis
Release from dormancy   
 SPT bHLH TF Integration of cold signal into GA signalling Arabidopsis
 PIL5 bHLH TF Integration of light signal into GA signalling Arabidopsis
 AtrbohB NADPH-oxidase ROS production Arabidopsis
 PRT6, ATE Targeted proteolysis Inactivating components of ABA signalling Arabidopsis
TF, transcription factor; ROS, reactive oxygen species.

Article in PDF format (1.2 MB)

Fig. 1         Fig. 2         Fig. 3         Table 1  
© 2012 Blackwell Publishing Ltd
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