Guanosine tetraphosphate (ppGpp) promotes tolerance to 2 excess light in Arabidopsis thaliana.
Shanna Romand, Chen Hu, Aurélie Crepin, Wojciech J. Nawrocki, Cécile Lecampion, Brigitte Ksas, Sylvie Citerne, Michel Térèse, Matteo Sugliani, Stefano Caffarri, Roberta Croce, Michel Havaux, Ben Field
This study shows that ppGpp over-accumulation in Arabidopsis thaliana increases tolerance to excess light through physiological changes, not NPQ.
bioRxiv · Nov 6, 2025 · PreprintPlant Biology