Targeting Redox Regulatory Mechanisms for Salinity Stress Tolerance in Crops

  • Mohsin Tanveer
  • Sergey ShabalaEmail author


Salinity stress is one of the major abiotic stresses that result in significant losses in agricultural crop production across the globe. Salinity stress results in osmotic stress, ionic stress, and oxidative stress; among these, oxidative stress is considered to be the most detrimental. Oxidative stress induces the production of different reactive oxygen species (ROS) at both intracellular and extracellular locations. Plants possess redox regulatory mechanisms by employing different enzymatic and nonenzymatic antioxidants to scavenge ROS. Different antioxidants have different tissue- and organelle-specific ROS-scavenging effects. However, the causal link between the amount of antioxidants and plant salinity stress tolerance is not as straightforward as one may assume, with controversial reports available in the literature. This chapter addresses those controversies and argues that there is a need for better understanding and development of tools for targeted regulation of plant redox systems in specific cellular compartments and tissues.


Antioxidant defense system QTL Redox regulation ROS production Salt stress Tissue specific antioxidant activity 



Singlet oxygen


NADPH-dependent aldo-ketoreductase


Ascorbate peroxidase


Ascorbic acid


Betaine aldehyde dehydrogenase




Choline dehydrogenase gene


Dehydroascorbic acid


Dehydroascorbate reductase


Glutathione peroxidase


Glutathione reductase




Glutathione S-transferase


L-Ascorbic acid


Mitogen-activated protein kinase phosphatase




Monodehydroascorbic acid


Monodehydroascorbate reductase


Methyl hydrogen peroxide


Nicotinamide adenine dinucleotide phosphate


Reduced NADP


Superoxide radical


Hydroxyl radical




Pyrroline-5-carboxylate reductase


Pyrroline-5-carboxylate synthase




Photosystem I


Photosystem II


Polyunsaturated fatty acid


Quantitative trait locus


Reactive oxygen species


Superoxide dismutase



This work was supported by the Australian Research Council and Qatar National Science Foundation (NPRP-8-126-1-024) grants to Sergey Shabala.


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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Land and Food, University of TasmaniaHobartAustralia

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