The ubiquitous signaling molecule melatonin (N-acetyl-5-methoxytryptamine) (MT) plays vital roles in plant development and stress tolerance. Selenium (Se) may be phytotoxic at high concentrations. Interactions between MT and Se (IV) stress in higher plants are poorly understood. | Protective mechanisms of melatonin against selenium toxicity in Brassica napus: Insights into physiological traits, thiol biosynthesis and antioxidant machinery