SEB Marseille 2008
Ubiquitination
Sponsored by Agrisera
Organised by Ari Sadanandom, University of Glasgow, UK
The control of protein degradation though the ubiquitin-dependent pathway is a central modifier of cellular signalling in eukaryotes. The Arabidopsis genome project identified more than a thousand genes encoding components of the Ubiquitin proteasome pathway representing approximately 5% of the entire plant proteome, far more than any other eukaryote. Mutations in components of ubiquitin proteasome pathway can block embryogenesis, circadian rhythms, photomorphogenesis, floral homeosis, hormone responses, senescence and defence. This illustrates the extent to which plants have evolved to rely on ubiquitin dependant posttranslational modification as a central signalling mechanism. The SEB one day symposium on ubiquitination in plants aims to capture a flavour of how this crucial conserved signalling machinery can have diverse effects on plant development and response to environment.
Session Programme - Sunday 6th July
10:00 Refreshment Break (in main exhibition area)
Chair: Dr Ari Sadanandom
10:30 Prof. Richard Vierstra (University of Wisconsin)
The role of the ubiquitin proteasome system in plant cellular signalling [P1.1]
11:10 Dr Pascal Genschik (Institut de Biologie Moléculaire des Plantes du CNRS – Strasbourg)
Regulation and role of Arabidopsis CUL4-DDB1A-DDB2 in maintaining genome integrity upon UV stress [P1.2]
11:35 Dr Paul R J Birch (University of Dundee)
Translocated oomycete effectors that target the plant immune system [P1.3]
12:00 Lunch
Chair: Professor Daphne Goring
13:30 Dr Stefan Kepinski (University of Leeds)
Auxin signalling – complex behaviour from a simple molecule [P1.4]
13:55 Prof. Andreas Bachmair (Max Planck Institute for Plant Breeding Research/University of Vienna)
Ubiquitin Lysine 63 chain formation in plants [P1.5]
14:20 Prof. Angus Murphy (Purdue University)
The Arabidopsis X-prolyl protease / cis trans isomerase APP1 regulates auxin signal transduction via interactions with AUX/IAA proteins [P1.6]
14:45 Refreshment Break
Chair: Dr Stefan Kepinski
15:15 Prof. Daphne Goring (University of Toronto)
The Plant U-box/ARM E3 ligases as potential intracellular signalling proteins for the S-Domain Receptor Kinases [P1.7]
15:40 Dr Sandrine Bonhomme (Institut Jean-Pierre Bourgin)
Role of the UPS pathway in sexual reproduction : Screening for Arabidopsis gametophytic mutations affecting F-box protein genes [P1.8]
16:05 Mr Jean-Luc Gallois (INRAAvignon)
The Arabidopsis proteasome RPT5 subunits are essential for gametophyte development [P1.9]
16:30 Dr Ari Sadanandom (University of Glasgow)
The cell death regulator AtPUB17 directly interacts with the BTB/POZ domain transcriptional repressor, AtBTB1 to control disease resistance in plants [P1.10]
