Crop Plants Develop Extracellular Signaling Products Against Salt Stress

Abstract

Plant signaling is a usual phenomenon that facilitates the transduction of external and internal signals into physiological reactions such as modification of activity of various enzymes, cytoskeleton structure, and gene expression. This chapter aims to gather all the information about extracellular products secreted by crop plants as well as cyanobacteria with their working mechanisms under salt stress conditions and their role in economic values in agriculture and medicine. The biosynthesis of bioactive extracellular compounds in plants aimed to enhance crop tolerance to abiotic and biotic stresses and overcome stressful conditions. The level of antioxidants, enzymes, and proteins has fluctuated under salt stress. Salt stress often generates both ionic and osmotic stress in plants, resulting in a greater disturbance in signaling and accumulation or decrease of specific metabolites in plants. In agriculture, cyanobacterial and plant's secondary metabolites are key tools for enhancing crop production. © 2022 John Wiley & Sons Ltd. All rights reserved.