Main conclusion SUMOylation of SLR1 at K2 protects productivity under salt stress, possibly by modulation of SLR1 interactome. Abstract DELLA proteins modulate GA signaling and are major regulators of plant plasticity to endure stress. DELLAs are mostly regulated at the post-translational level, and their activity relies on the interaction with upstream regulators and transcription factors (TFs). SUMOylation is a post-translat...