Root endophyte sulfur metabolites enhance redox balance and drought tolerance in Arabidopsis

ABSTRACT: Drought is a major consequence of climate change and significantly limits crop productivity. Plant growth-promoting bacteria offer a promising solution to mitigate drought stress. The root endophyte Pseudomonas argentinensis SA190 has been shown to enhance plant performance under drought stress conditions, but the mechanistic basis of SA190's beneficial effects remained unclear. Given the pivotal role of sulfur-containing compounds in abiotic stress responses, we investigated multiple sulfur-related Arabidopsis mutants under PEG-induced drought stress. We found that SA190 enhances sulfate uptake and promotes glutathione (GSH) accumulation in shoots under stress conditions. SA190 treatment increased the GSH/GSSG ratio, providing a enhanced redox resilience under PEG stress. Inhibition of GS

SUBMITTER: Buesra Elkatmis 

PROVIDER: S-SCDT-10_1038-S44318-026-00952-4 | biostudies-other |

REPOSITORIES: biostudies-other