Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

By M. Hasanuzzaman, M. Bhuyan, Faisal Zulfiqar, A. Raza, S. Mohsin, J. Mahmud, M. Fujita, V. Fotopoulos. Antioxidants, 2020

2,401 citations recorded by the source corpus.

Global climate change and associated adverse abiotic stress conditions, such as drought, salinity, heavy metals, waterlogging, extreme temperatures, oxygen deprivation, etc., greatly influence plant growth and development, ultimately affecting crop yield and quality, as well as agricultural sustainability in general. Plant cells produce oxygen radicals and their derivatives, so-called reactive oxygen species (ROS), during various processes associated with abiotic stress. Moreover, the generation of ROS is a fundamental process in higher plants and employs to transmit cellular signaling information in response to the changing environmental conditions. One of the most crucial consequences of abiotic stress is the disturbance of the equilibrium between the generation of ROS and antioxidant defense systems triggering the excessive accumulation of ROS and inducing oxidative stress in plants. Notably, the equilibrium between the detoxification and generation of ROS is maintained by both enzymatic and nonenzymatic antioxidant defense systems under harsh environmental stresses. Although this field of research has attracted massive interest, it largely remains unexplored, and our understanding of ROS signaling remains poorly understood. In this review, we have documented the recent advancement illustrating the harmful effects of ROS, antioxidant defense system involved in ROS detoxification under different abiotic stresses, and molecular cross-talk with other important signal molecules such as reactive nitrogen, sulfur, and carbonyl species. In addition, state-of-the-art molecular approaches of ROS-mediated improvement in plant antioxidant defense during the acclimation process against abiotic stresses have also been discussed.

Subfields: Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/1c51458cd2c76c1657c9523c38e391db025a5891

How researchers see this paper

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In Molecular Biology

1. Honghong Wu
2. A. Raza

In Plant Science

1. Honghong Wu
2. A. Raza
3. P. Woodrow

Citations in the corpus

• Effect of Salinity Stress on Physiological Changes in Winter and Spring Wheat (2021, background): “ROS are highly cytotoxic and can seriously react with vital biomolecules such as lipids, proteins, nucleic acid, and disturb normal metabolic pathways [52,53].”
• ROS Homeostasis and Plant Salt Tolerance: Plant Nanobiotechnology Updates (2021, background): “Glutathione transferase in the peroxisomes can not only remove H2O2, but also relieve the toxicity of reactive oxygen species [67].”
• Nanoparticles as Novel Elicitors to Improve Bioactive Compounds in Plants (2021, background): “The activation or inactivation of oxidative stress depends on several factors including plant species [56], age and type of tissues [57], tolerance or sensible in plants and the type of stressor [58].”
• Microalgae-cyanobacteria–based biostimulant effect on salinity tolerance mechanisms, nutrient uptake, and tomato plant growth under salt stress (2021, background): “H2O2, produced by SOD activity, is then decomposed into H2O and O2 by CAT in the cytoplasm or scavenged by ascorbate peroxidase in the chloroplast and the cytosol (Ahanger et al. 2018; Hasanuzzaman et al. 2020).”