Root-derived GA$_{12}$ contributes to temperature-induced shoot growth in $Arabidopsis$

Lucie Camut (1) , Thomas Regnault (1) , Mathilde Sirlin-Josserand (1) , Lali Sakvarelidze-Achard (1) , Esther Carrera (2) , Julie Zumsteg (1) , Dimitri Heintz (1) , Nathalie Leonhardt (3) , Maria João Pimenta Lange (4) , Theo Lange (4) , Jean-Michel Daviere (1) , Patrick Achard (1)

1 IBMP - Institut de Biologie Moléculaire des Plantes
2 CSIC-UPV
3 PEPSS - Plant Environmental Physiology and Stress Signaling
4 Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]

Plants are able to sense a rise in temperature of several degrees, and appropriately adapt their metabolic and growth processes. To this end, plants produce various signalling molecules that act throughout the plant body. Here, we report that root-derived GA$_{12}$, a precursor of the bioactive gibberellins, mediates thermo-responsive shoot growth in $Arabidopsis$. Our data suggest that root-to-shoot translocation of GA$_{12}$ enables a flexible growth response to ambient temperature changes.

Domaines: Sciences du Vivant [q-bio]

Lucie Camut, Thomas Regnault, Mathilde Sirlin-Josserand, Lali Sakvarelidze-Achard, Esther Carrera, et al.. Root-derived GA$_{12}$ contributes to temperature-induced shoot growth in $Arabidopsis$. Nature Plants, 2019, 5 (12), pp.1216-1221. ⟨10.1038/s41477-019-0568-8⟩. ⟨cea-02440850⟩