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Plant Performance Under Environmental Stress
Springer
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Due to the sessile nature of green plants, abiotic stresses have been established potentially as a menace to agriculture productivity worldwide. The reason lies in their negative influence on the plant’s physiological, morphological, biochemical, and molecular mechanisms from the juvenile stage to maturity. Eventually, the harrowing effects of these stresses cause up to 70% yield loss in staple food crops. In response to tackle these adversities, the phytohormones have been projected strongly as a potential tool for sustainable mitigation of toxic effects of abiotic stresses. Next to jasmonic acid, salicylic acid (SA) is one such another immunity providing phenolic hormone that contributes to the modulation of growth of plants and also in the amelioration of different stresses. Under stress conditions, it has been identified as crucial for various physiological processes such as photosynthesis, synthesis of osmolyte glycine betaine (GB), N-metabolism, antioxidant defense system reinforcement, and offsetting plant-water relations. Apart from imparting resistance to the plants under biotic-stress, SA is employed to boost tolerance in plants for major abiotic stresses like cold, metal, metalloids, hyper-ionic, osmotic, drought, and heat by regulating transcriptional reprogramming of various stress-responsive genes. Therefore, this chapter is an attempt to significantly highlight the SA regulating growth and developmental aspects of stressed plants.
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