Seven new ANR projects at the IJPB

IMOGEN project
Inter-organ modulation of gene regulatory networks in plants: the example of the CUP-SHAPED COTYLEDON genes
Coordinator: Patrick Laufs, "Transcription Factors and Architecture" FTA team 
Collaboration: Jean-Christophe Palauqui and Liudmila Chelysheva, "Transcription Factors and Architecture" FTA team 
Collaboration IPS2: Thomas Blein, Olivier Martin, Olivier Christ, Céline Sorin, Marion Verdenaud, Martin Crespi and Céline Charon 
Abstract
The CUP-SHAPED COTYLEDON (CUC) transcription factors are evolutionarily conserved key players directing growth and patterning during aerial plant organ development, but uncharacterized roles in roots. The first objective of this project is to characterize the roles of the CUC genes during Arabidopsis root development. The second objective is to establish the CUC gene regulatory network (GRN) and determine its possible modulation by the developmental conte

Projet LIPSTIQ
Transcriptional regulation of suberin biosynthesis and its role in seed quality under heat stress
Coordinator: Sébastien Baud, "Seed Development and Quality" SEEDEV team
Collaboration: Frédéric Domergue and Jérôme Joubès, "Laboratoire de Biogenèse Membranaire" LBM, Université de Bordeaux
Abstract
In Brassicaceae oilseeds, the integument is involved in the nutrition of the embryo and forms a protective barrier separating the embryo from the external environment. The integument produces a lipid polyester, called suberin, whose biophysical properties are particularly well suited to these different functions. The LIPSTIQ project aims to elucidate the pathways of suberin biosynthesis and the transcriptional regulation of this metabolism, particularly in the context of heat stress, in order to generate orignal knowledge that will be useful for improving seeds in an agro-ecological context that is undergoing radical change.

Projet LOVE ME
Nicolas Arnaud
Leverage OVulE primordia 3D Multi-signal intEgration to study the function of boundary domains
Coordinator: Nicolas Arnaud, "Transcription Factors and Architecture" FTA team 
Collaboration IJPB: Jasmine Burguet, "Modeling and Digital Imaging" MiN team
Other collaborations: Daphné Autran, "Diversité, Adaptation, "'Développement des plantes" DIADE, IRD, Célia Baroux, UZH, Zürich, Suisse, Gabriella Mosca, ZMBP, Université de Tübingen, Allemagne
Abstract
In plants, ovule primordia arise from placental tissue, from which they are physically separated by a boundary domain (BD). Our research project aims to understand how the anisotropic growth and mechanical properties of BD cells control the shape and patterning of ovule primordia.

Projet MOROSCO
Molecular structure and Role of the Synaptonemal Complex in Arabidopsis thaliana
Coordinator: Mathilde Grelon, "Meiosis Mechanisms" MeioMe team
Collaborations: Raphaël Guérois, I2BC, CEA et Owen Davies, University of Edinburgh, UK
Abstract
Successful meiosis depends on the formation of crossovers within a highly conserved protein complex, the synaptonemal complex. The MOROSCO project aims to decipher the structure and role of this complex in plants by identifying its components and analyzing their functions using complementary approaches of molecular genetics, modeling, protein biochemistry and high-resolution microscopy.

Projet ORPhagy
ORPhagy: Dissect the role of lipid trafficking in autophagy throughout plant development and plant response to stress
Coordinator: Céline Masclaux-Daubresse, "Senescence, Autophagy, Nutrient Recycling and Nitrogen Use Efficiency" SATURNE team
IJPB collaborations: Fabien Chardon and Anne Marmagne, "Senescence, Autophagy, Nutrient Recycling and Nitrogen Use Efficiency" SATURNE team
Collaborations: Daphné Autran, "Diversité, Adaptation, "'Développement des plantes" DIADE, IRD, Célia Baroux, UZH, Zürich, Suisse, Gabriella Mosca, ZMBP, Université de Tübingen, Allemagne
Abstract
By studying the specificity, activity and functions of lipid transfer proteins across scales, we aim at resolving their role in the autophagy pathway and plant physiology thus addressing how lipids are mobilized towards autophagosome formation throughout plant development and plant stress response.  

Projet PlantCPM
A new modelling formalism for the morphogenesis of plant tissues
Cordinator: Philippe Andrey, "Modeling and Digital Imaging" MiN team
Abstract
The morphogenetic development of plant organs is a complex process that results from the combinatorial integration of cellular, mechanical and signalling processes operating at different scales, from tissues down to the subcellular level. Today, a major challenge is to develop multi-scale and three-dimensional computational models that are at the same time congruent with experimental imaging data. The PlantCPM project will address this challenge by introducing a new formalism derived from the Potts' Cellular model and adapted to the modelling of plant tissue morphogenesis.
A single-team project

Wallscape
Shaping plant cell wall architecture through protein-pectin interactions
Coordinator: Heman Höfte
Collaboration IJPB: Kalina Haas
Other collaborations: David Ropartz, Bernard Cathala, Estelle Bonnin, Hélène Rogniaux, Céline Moreau, BIA, INRAE, Nantes et  Julia Santiago, Université de Lausane, Suisse
Abstract
The project studies how protéine-pectine interaction contribute to the assembly of the plant cell wall. This includes the study of the structural determinants and the biological function of these interactions.


Update 05/12/42


Research developed at the Institute Jean-Pierre Bourgin for Plant Sciences.