Les séminaires ont lieu sur le Campus Montpellier SupAgro/INRA de La Gaillarde (2, place P. Viala Montpellier)
Jeudi 11 mars 2010
Salle 106 (Cœur d’Ecole) à 14h
High-affinity K+ uptake in tomato plants
BPMP, équipe Canaux ioniques
Plants are able to take up K+ from a wide range of external concentrations (from micromolar to milimolar concentrations). High affinity K+ uptake, the one that takes place at low external concentrations (below 0,2-1mM K+ ), is mediated by both transporters and channels. Members of the Shaker channel family and transporters belonging to the HAK/KUP/KT family are involved in this uptake in many plant species. A study in tomato plants was carried out to gain insight into this topic by using different approaches (K+uptake in plants, electrophysiology, heterologue expression, etc.). As a result, it has been shown that a member of the HAK/KUP/KT, LeHAK5, greatly contributes to this uptake and exhibits interesting features regarding gene expression regulation.
Contact : Manuel Nieves-Cordones