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Symposium IJPB 2018

19-20 mars 2018, INRA, Versailles, France

L’Institut Jean-Pierre Bourgin (IJPB) couvre un champ d'activité qui s'étend de travaux fondamentaux sur le développement, la génétique et la physiologie des plantes jusqu'à la recherche finalisée pour l’utilisation alimentaire et non-alimentaire des produits végétaux, dans le cadre d’une agriculture durable. contacts

Les 19 et 20 Mars 2018, se tiendra le premier symposium de l'IJPB à l'amphithéatre de l'INRA de Versailles, couvrant une partie des champs de recherche de l'unité, accompagné de séminaires de 6 invités prestigieux :
Thomas Greb (Heidelberg University, Germany)
Claudia Köhler (Swedish University of Agricultural Sciences, Uppsala, Sweden)
Pyung Ok Lim (DGIST, South-Korea)
Gwyneth Ingram (ENS Lyon, France)
Nathalie Verbruggen (Bruxelles University, Belgium)
Jonathan Jones (Sainsbury Laboratory, Norwich, United Kingdom)


Anne Krapp et Olivier Loudet


Programme et affiche

Comité scientifique : Nicolas Bouché, Jasmine Burguet, Sylvie Dinant, Jean-Denis Faure, Martine Gonneau, Herman Höfte, Anne Krapp, Patrick Laufs, Loïc Lepiniec, Olivier Loudet, Céline Masclaux-Daubresse, Raphaël Mercier, Christian Meyer, Helen North et Jean-Christophe Palauqui

Comité local d’organisation : Corine Enard (Institut Jean-Pierre Bourgin (IJPB), Versailles), Maria-Jesus Lacruz (IJPB, Versailles), Philippe Poré (INRA, Versailles) et Stéphane Raude (IJPB, Versailles)

Contact et plus d'info : site Symposium IJPB 2018



21 novembre 2017


Séminaires
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Lundi 29 janvier 2018
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14h00

Séminaire invité
Pr. Oren OSTERSETZER-BIRAN
(Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Israël)

Plant mitochondria group II introns splicing: A window into the evolution of the nuclear spliceosomal machineries

Mitochondria serve as principal sites for cellular energy metabolism and play pivotal roles in the biosynthesis of many essential metabolites for the (plant) cell. As dependences of a free-living organism, mitochondria contain their own genome, the mtDNA. Plant mitochondria are remarkable with respect to the presence of numerous group II introns. The removal of the introns from the coding sequences is essential for respiratory functions.While the splicing of group II introns in vivo is facilitated by maturase factors, canonical group II introns are catalytic RNAs that are able to excise themselves from their pre-RNA hosts in vitro, in the absence of the protein cofactors, using a mechanism identical to that utilized by the spliceosome. Structural analyses and phylogenetic data may indicate that the spliceosomal RNAs have evolved from group II intron-related ancestors. Yet, it remains unclear how could such general players in spliceosomal splicing evolve from the monospecific bacterial systems (i.e. a group II intron RNAs and their highly specific intron-encoded maturase factors). Analysis of the organellar splicing machinery in plants may provide us with important clues into the evolution of the nuclear splicing machineries. The ability of the mitochondrial maturases in plants to act on different intron targets further support the notion that the early organellar self-splicing and mobile group II RNAs spread in the eukaryotic genomes and later ‘degenerated’ into the universal splicing system, known as the spliceosome. The similarities between maturases and the core spliceosomal factor, Prp8, may support this intriguing hypothesis.

Oren Ostersetzer-Biran webpage

Invité par : Hakim Mireau 

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Jeudi 22 mars 2018
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11h00
Grande salle Bât. 7
Séminaire visiteur
Dr. Sichul LEE
Center of Plant Aging Research, Institute of basic science & Daegu Gyeongbuk Institute of Science and Technology,
Corée du Sud
OsASN1 overexpression in rice increases grain protein and yield
grown under nitrogen limitation

Invité par : céline Masclaux-Daubresse

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Vendredi 23 mars 2018
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11h00
Bibliothèque physio-phyto Bât. 2
Séminaire visiteur
Pr. Kris VISSENBERG
Université d'Anvers, Belgique

Control of root hair elongation
by auxin and the ERULUS kinase in Arabidopsis thaliana

Invité par : Herman Höfte
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Lundi 14 mai 2018
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14h00

Séminaire invité
Pr. Henrik JÖNSSON
The Sainsbury Laboratory, Cambridge, GB
How many cells can you fit in a stem cell niche?

Plant shoots harbor stem cells throughout the life of the plant maintained via a gene regulatory feedback network. Perturbations to these regulatory genes lead to changes in the size and shape of the stem cell niche. Similar effects can be achieved by perturbing the cell walls and heterogeneous and anisotropic mechanical wall properties need to be regulated to generate correct form. We use a Computational Morphodynamics approach, combining live imaging and models of cell wall mechanics and gene networks, to understand how growth and differentiation is coordinated. In this talk I will discuss how mechanical patterning can overlap with gene expression patterns, and how cell size and tissue size can influence the maintenance of the stem cell niche.

Hendrik Jönsson webpage
Invité par : et

Date limite d'inscription obligatoire jusqu'au 10/05/18
pour les extérieurs au site INRA de Versailles

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Lieu des séminaires sauf indication contraire
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Amphithéâtre de Versailles, Bât. 10
INRA Centre de Versailles-Grignon
Route de St Cyr (RD10)
78026 Versailles Cedex

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