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SPS - Saclay Plant Sciences

Bertrand Dubreucq

Research director

Bertrand Dubreucq
Seed reserves accumulation: yield and quality

Main research interests

My main topic is the transcriptional network controlling the switch between embryogenesis and accumulation of reserves. We aim at better understanding the quantity and quality of reserves accumulated in the seed.  I am focusing on LEC2, a master regulator of seed maturation belonging to the B3 family. My work aims to determine (i) how this factor binds, or interact, with its DNA targets, in a possible complex with ABI3 and FUS3, (ii) how is this protein complex is regulated, and (iii) how LEC2 is transcriptionally and post-transcriptionally tuned.

Selection of 3 major recent publications

Miquel M., Trigui G. , d’Andréa S.  Kelemen Z. , Baud S. , Berger A. ,  Deruyffelaere C. , Trubuil A. , Lepiniec L.  and Dubreucq B. (2014). Specialization of oleosins in OB dynamics during seed development in Arabidopsis thaliana seeds. Plant Physiology, Volume: 164   Issue: 4   Pages: 1866-1878.

Berger N., Dubreucq B., Roudier F., Dubos C., and Lepiniec L. (2011). Transcriptional regulation of Arabidopsis LEAFY COTYLEDON2 involves RLE, a cis-element that regulates trimethylation of histone H3 at Lys-27.Plant Cell. , 23, 11 4065-4078.

Guillon F., Larré F, Petipas F., Berger A., Moussawi J., Rogniaux H, Santoni A. , Jamme F., Miquel M. , Lepiniec L. and Dubreucq B. (2011). An integrated overview of grain development in Brachypodium dystachion variety Bd21. J Ex Bot. doi:10.1093/jxb/err298

Institut Jean-Pierre Bourgin
Pôle Reproduction et Graines
UMR 1318 INRA-AgroParisTech
Route de Saint Cyr
78026 Versailles cedex
France

bertrand.dubreucq[at]versailles.inra.fr

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See also

Embryogenesis, epigenetic control and seed size

Lucia Colombo (University of Milan), Jean-Denis Faure (Labex SPS), Loïc Lepiniec (Labex SPS)

Seed coat differentiation and secondary metabolites of commercial interest

George Haughn (University of British Columbia), Isabelle Debeaujon (LabEx SPS), Helen North (LabEx SPS)

Seed reserve accumulation : yield and quality

John Harada (University of California), Sébastien Baud (LabEx SPS), Bertrand Dubreucq (LabEx SPS)

Desiccation and stress responses

Julia Buitink (INRA Angers), Christophe Bailly (UPMC Paris), Emmanuelle Issakidis-Bourguet (LabEx SPS)

Dormancy, germination and dispersal

Kathleen Donohue (Duke University),  Annie Marion-Poll (LabEx SPS), Loïc Rajjou (LabEx SPS)