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The joint SymbiFix meeting and 4th meeting on Molecular Mechanisms in Nitrogen-Fixing Root Endosymbioses, 29-30 October 2015

The joint SymbiFix meeting and 4th meeting on Molecular Mechanisms in Nitrogen-Fixing Root Endosymbioses will be held in Nice, 29-30 October 2015

Program - 4th Meeting on Molecular Mechanism in Nitrogen Fixing Root Endosymbioses

See Situation map >>>

Talks of 20 minutes (15 min. presentation + 5 min. questions)

Thursday 29th October


Welcome lunch in Parc Valrose (salle des actes - salle à manger)


Meeting introduction: Pierre Frendo and Renaud Brouquisse (théâtre)

Session 1. Early signalling and infection

Chairperson: Catherine Masson and Julie Cullimore


Jean-Jacques Bono (LIPM, Toulouse). "Structure-function studies of Medicago truncatula LysM-RLKs in symbiotic signal perception”


Hassen Gherbi (LSTM, Montpellier). "Signalling and crosstalk in the actinorhizal root nodule symbiosis"


Anouck Diet (IPS2, Gif sur Yvette). "DELLA-mediated gibberellin signaling directly interferes with the Nod factor signaling pathway controlling symbiotic nodulation"


David Barker (LIPM, Toulouse). "How rhizobia enter the root hair infection thread without localized plant cell wall degradation"


Coffee break (salle des actes)

Session 1. Early signalling and infection

Chairperson: Martin Crespi and Pascal Ratet


Sandra Bensmihen (LIPM, Toulouse). "Towards understanding how symbiotic molecules stimulate lateral root formation in Medicago truncatula"


Jean-François Arrighi (LSTM, Montpellier). "Genetics of Aeschynomene evenia to shed light on the molecular mechanisms of the Nod-independent process"


Fernando Sorroche (LIPM, Toulouse). "Autoregulation of infection in the S. meliloti-Medicago symbiosis"


Poster session (salle à manger)


Dinner in « Le Saint Paul Hôtel »

Friday 30th October

Session 2. Regulation of nodulation

Chairperson: Eric Giraud


Farid Regad (LIPM, Toulouse). "NF-YA TFs as key regulators of nodule development"


Pascal Ratet (IPS2, Gif sur Yvette). "Symbiosis and immunity in Medicago truncatula"


Philippe Normand (Lyon 1). "Physiological effects of Alnus cysteine rich peptides on Frankia physiology"


Carine Satgé (LIPM, Toulouse). "Epigenetic regulation of indeterminate nodule development"


Coffee break (salle des actes)

Session 3. New insights from Omics studies

Chairperson: Pierre Frendo


Isabelle Damiani (Sophia Antipolis). "Deep sequencing of the Medicago truncatula root hair transcriptome after nodulation factor treatment"


Benoit Alunni (I2BC, Gif sur Yvette). "Bacteroid differentiation in bradyrhizobia, insights from an "omics" perspective"


Martin Crespi (IPS2, Gif sur Yvette). "Small RNA diversity in nitrogen fixing endosymbiosis"



Session 4. Adaptation and evolution

Chairperson: Philippe Normand


Pierre Frendo (Sophia Antipolis). "Thioredoxins S are involved in the reduction of NCR peptides and the regulation of nitrogen-fixing symbiosis in Medicago truncatula"


Nicolas Busset (LSTM, Montpellier). "Role of hopanoids in Bradyrhizobium strains during their free living and symbiotic states"


Antoine Le Quéré (LSTM, Montpellier). "Adaptation of rhizobium-legume symbiosis to environmental contraints"


Dorian Guetta (LIPM, Toulouse). "From pathogeny to mutualism: Molecular mechanisms driving endosymbiosis adaptation in Ralstonia solanacearum"


Concluding remarks

See Program in pdf version >>>

NodC26 5x 07IP - Copie

The organizing committee

  • Pierre Frendo
  • Renaud Brouquisse

The scientific committee

  • Julie Cullimore
  • Catherine Masson-Boivin
  • Eric Giraud
  • Peter Mergaert
  • Philippe Normand
  • Pascal Gamas
  • Renaud Brouquisse
  • Pierre Frendo
  • Florian Frugier
  • Marc Lepetit