4ème Colloque sur les Endosymbioses Racinaires Fixatrices d'Azote

Les 29 et 30 octobre sur le campus de Valrose. Le but de ce colloque est de favoriser les échanges d'idées et de matériel au sein de la communauté française de biologistes spécialisés dans les symbioses fixatrices d'azote.
4ème Colloque sur les Endosymbioses Racinaires Fixatrices d'Azote

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Quand ? Du 29-10-2015 à 12:00
au 30-10-2015 à 16:30
Où ? campus Valrose
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Thursday 29th October

12h00 : Welcome lunch in Parc Valrose (salle des actes - salle à manger)
13h45 : Meeting introduction Pierre Frendo and Renaud Brouquisse(théatre)
Session 1. Early signalling and infection

Chairperson: Catherine Masson and Julie Cullimore

Talks of 20 minutes (15 minute presentation + 5 minutes questions)
14:00 – 14:20 : Jean-Jacques Bono (LIPM, Toulouse). "Structure-function studies of Medicago truncatula LysM-RLKs in symbiotic signal perception".
14:20 – 14:40 : Hassen Gherbi (LSTM, Montpellier). "Signalling and crosstalk in the actinorhizal root nodule symbiosis".
14:40 – 15:00 : Anouck Diet (IPS2, Gif sur Yvette). "DELLA-mediated gibberellin signaling directly interferes with the Nod factor signaling pathway controlling symbiotic nodulation".
15:00 – 15:20 : David Barker (LIPM, Toulouse). "How rhizobia enter the root hair infection thread without localized plant cell wall degradation".
15:20-16:00 : Coffee break (salle des actes)

Session1. Early signalling and infection

Chairperson: To be determined

16 :00 – 16 :20 : Sandra Bensmihen (LIPM, Toulouse). "Towards understanding how symbiotic molecules stimulate lateral root formation in Medicago truncatula".
16:20 – 16:40 : Jean- François Arrighi (LSTM, Montpellier). "Genetics of Aeschynomene evenia to shed light on the molecular mechanisms of the Nod-independent process".
16:40 – 17:00 : Fernando Sorroche (LIPM, Toulouse). "Autoregulation of infection in the S. meliloti-Medicago symbiosis".
17:00-18:20 : Poster session (salle à manger)
20:00 : Dinner in « Le Saint Paul Hôtel »

Friday 30th October

Session2. Regulation of nodulation

Chairperson: Eric Giraud

09 :00 – 09 :20 : Farid Regad (LIPM, Toulouse). "NF-YA TFs as key regulators of nodule development"
09:20 – 09:40 : Pascal Ratet (IPS2, Gif sur Yvette). "Symbiosis and immunity in Medicago truncatula".
9:40 – 10:00 : Philippe Normand (Lyon 1). "Physiological effects of Alnus cysteine rich peptides on Frankia physiology".
10:00 – 10:20 : Carine Satgé (LIPM, Toulouse). "Epigenetic regulation of indeterminate nodule development".
10:20-10:50: Coffee break (salle des actes)

Session 3. New insights from Omics studies

Chairperson: Pierre Frendo

10:50 – 11:10 : Isabelle Damiani (Sophia Antipolis). "Deep sequencing of the Medicago truncatula root hair transcriptome after nodulation factor treatment".
11:10 – 11:30 : Benoit Alunni (I2BC, Gif sur Yvette). "Bacteroid differentiation in bradyrhizobia, insights from an "omics" perspective" 13:30 – 13:50
11:30 – 11:50 : Martin Crespi (IPS2, Gif sur Yvette). "Small RNA diversity in nitrogen fixing endosymbiosis".
11:50-13:30: Lunch.

Session 4. Adaptation and evolution

Chairperson: To be determined

13:30 – 13:50: Pierre Frendo (Sophia Antipolis). "Thioredoxins S are involved in the reduction of NCR peptides and the regulation of nitrogen-fixing symbiosis in Medicago truncatula".
13:50 – 14:10 Nicolas Busset (LSTM, Montpellier). "Role of hopanoids in Bradyrhizobium strains during their free living and symbiotic states".
14:10 – 14:30 Antoine Le Quéré (LSTM, Montpellier). "Adaptation of rhizobium-legume symbiosis to environmental contraints".
14:30 – 14:50 Dorian Guetta (LIPM, Toulouse). "From pathogeny to mutualism: Molecular mechanisms driving endosymbiosis adaptation in Ralstonia solanacearum".
14:50-15:15: Concluding remark

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