A redox switch in stomatal fate decision.

A recent study by Wang et al. demonstrates that nitric oxide (NO) influences plant development and stress tolerance in arabidopsis (Arabidopsis thaliana). By modulating mitogen-activated protein kinase 6 (MPK6) phosphorylation through NO-driven S-nitrosylation, NO promotes stomatal formation and enhances stress resilience, offering insights into the role of redox regulation in plant adaptation and potential crop improvements.