Abstract
Abiotic stress poses a serious threat to plant development and crop productivity. This reduces the photosynthetic efficiency and nutrient uptake capacity. Sulfur (S) is a crucial macronutrient that plays a vital role in plant metabolic processes under both normal and stressful conditions. Various amino acids like cysteine, methionine, and other metabolites such as glutathione (GSH) and glucosinolates consist of sulfur as a major constituent, which plays a pivotal role in the mitigation of the abiotic stress by directly modulating the plant's antioxidant defense mechanism. Also exogenous application of S stimulates various cascades to enhance the plant's tolerance to various abiotic stressful conditions. In this review, we focus on the S uptake, translocation, regulation, and interaction of S with various phytohormones and other signaling molecules and their tolerance under abiotic stress conditions.
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