The seminars take place on the Montpellier Institut Agro/INRAE Campus of La Gaillarde (2, place P. Viala Montpellier)

March 14, 2024

at 2 pm – Amphi 208 Cœur d’Ecole

François Barbier

( HoNuDe team )

Nutrient and metabolite signalling control shoot branching

Plants have the ability to control their shoot architecture to adapt to their environment. Part of this phenotypic plasticity is due to the control of shoot branching by nutrients and metabolites, such as sugars. During the control of shoot branching, sugars act through different signalling pathways mediated by HEXOKINASE1, the sugar signal trehalose 6-Phosphate or the transcription factor bZIP11. Sugars also interact with the hormonal network controlling shoot branching to modulate this process. Notably, sugars inhibit strigolactone signalling, a class of hormone that repress shoot branching. Nitrate availability is also critical for shoot branching, and regulate this process via controlling strigolactone synthesis. However, the molecular mechanisms through which nitrate control strigolactone synthesis remain largely unknown. My project at IPSiM will be to identify and study the molecular components that enable nitrate to control strigolactone synthesis and shoot branching.

Contact: François Barbier

Contacts IBIP :

Sabine Zimmermann (sabine.zimmermann@cnrs.fr)

Justine Drouault (justine.drouault@inrae.fr)

Jessica Bertheloot (jessica.bertheloot@inrae.fr)

Chantal Baracco (chantal.baracco@inrae.fr)