Abstract
Heavy metal (HM) toxicity is one of the leading abiotic stresses, which is very unsafe and risky for plants. With a fleeting enhancement in industrialization and urbanization due to population explosion, heavy metals inclusion into the environment has become a major concern for the environmentalists. These are most deleterious pollutants and cause phytotoxicity in plants. Heavy metal accumulation in plants results in generation of oxidative stress. Salicylic acid (SA) is an imperative endogenous plant hormone. It has a crucial role in regulation of various physiological and metabolic processes in plants. It is considered as one of the most important signaling molecule involved in both abiotic and biotic stress tolerance. Application of optimal concentrations of SA enhances plants’ tolerance to heavy metal stress by modulating levels of several metabolites including components of antioxidative defense cascade, osmolytes, secondary metabolites, and metal-chelating compounds.
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Kohli, S.K. et al. (2017). Role of Salicylic Acid in Heavy Metal Stress Tolerance: Insight into Underlying Mechanism. In: Nazar, R., Iqbal, N., Khan, N. (eds) Salicylic Acid: A Multifaceted Hormone. Springer, Singapore. https://doi.org/10.1007/978-981-10-6068-7_7
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