Use of translational genomics to identify genes important for legume seed filling

Autor: Mélanie Noguero, Erfurth, Isabelle D., Christine Le Signor, Vanessa Vernoud, Jérôme Verdier, Gregoire Aubert, Julia Buitink, Jerome Gouzy, Jean-Marie Prosperi, Thierry Huguet, Judith Burstin, Karine Gallardo, Richard Thompson
Přispěvatelé: Agroécologie [Dijon], Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Plant Biology Division, The Samuel Roberts Noble Foundation, Institut de Recherche en Horticulture et Semences (IRHS), Université d'Angers (UA)-Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité mixte de recherche interactions plantes-microorganismes, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), École nationale supérieure agronomique de Toulouse [ENSAT], ProdInra, Migration
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: First Legume Society Conference 2013: A Legume Odyssey
First Legume Society Conference 2013: A Legume Odyssey, May 2013, Novi Sad, Serbia
HAL
Popis: International audience; Translational genomics, i.e., the transfer of genetic information from model species to cultivated crops, is on the brink of revolutionizing plant breeding. The recent publication of genomic sequences for several cultivated legumes is also accelerating this process. For pea, recent highthroughput RNA sequencing, and the prospect of a genome sequencing project, will further accelerate the transfer of information from the Medicago truncatula model to the cultivated crop. We have been using genomics approaches with Medicago as a tool to identify key genes determining seed yield and composition in closely related legumes. Analyses of the proteome and transcriptome of the component tissues of the developing seed revealed extensive compartmentalization of gene expression and metabolic activities. Using a TF (Transcription Factor) qRT-PCR platform and the Affymetrix Gene Chip, TFs specific for each seed tissue were identified, along with putative target genes. These TFs have been located on the M. truncatula genetic map and correlations between map positions of TF loci and QTLs for protein quantities and other seed phenotypes were detected. These correlations can be recently confirmed in numerous cases by the existence of similar QTLs at syntenic positions in pea. Two genes, both specifically expressed in the developing endosperm, have received particular attention. One of the genes encodes a DOF class transcription factor, whose mutant phenotype severely affects endosperm development. The second gene encodes an endosperm-specific subtilase (SBT1.1), which affects final seed weight. MiRNAs constitute another level of gene regulation whose importance in the developing seed is beginning to become apparent. We have recently started to compare the sRNA profiles of developing M. truncatula and pea seeds and preliminary results will be presented.
Databáze: OpenAIRE
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