Reactive Oxygen Species, Oxidative Damage, and Antioxidative Defense Mechanism in Plants under Stressful Conditions

By Pallavi Sharma, A. Jha, R. Dubey, M. Pessarakli. 2012

5,250 citations recorded by the source corpus.

Reactive oxygen species (ROS) are produced as a normal product of plant cellular metabolism. Various environmental stresses lead to excessive production of ROS causing progressive oxidative damage and ultimately cell death. Despite their destructive activity, they are well-described second messengers in a variety of cellular processes, including conferment of tolerance to various environmental stresses. Whether ROS would serve as signaling molecules or could cause oxidative damage to the tissues depends on the delicate equilibrium between ROS production, and their scavenging. Efficient scavenging of ROS produced during various environmental stresses requires the action of several nonenzymatic as well as enzymatic antioxidants present in the tissues. In this paper, we describe the generation, sites of production and role of ROS as messenger molecules as well as inducers of oxidative damage. Further, the antioxidative defense mechanisms operating in the cells for scavenging of ROS overproduced under various stressful conditions of the environment have been discussed in detail.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/c3e3ab685522522ac3c01185108e1f5f334b0546

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In Plant Science

1. M. Fujita
2. M. Hasanuzzaman
3. M. A. Hossain
4. M. Mostofa
5. Kalpna Bhandari
6. J. Mahmud
7. M. Bhuyan
8. H. Nayyar

Citations in the corpus

• Tomato (Solanum lycopersicum L.) in the service of biotechnology (2015, background): “Malondialdehyde accumulation takes place in plants due to membrane lipid peroxidation (Sharma et al. 2012).”
• Arsenic-induced metabolic disturbances and their mitigation mechanisms in crop plants: A review (2016, background): “The genes responsible for phosphate absorption are Pht1 (engaged in root transportation) and Pht2, the products of which are expressed in phosphate starved conditions only (Shin et al. 2004).”
• An overview on manufactured nanoparticles in plants: Uptake, translocation, accumulation and phytotoxicity. (2017, background): “For example, 251 O2˙¯ reacts with only those compounds that possess hydrogen bonds in their structure like Fe-S 252 cluster of proteins, nitric acid, etc (Gill and Tuteja, 2010; Sharma et al., 2012).”
• Heavy Metal Stress and Some Mechanisms of Plant Defense Response (2015, background): “To mitigate the harmful effects of free radicals, plant cells have developed antioxidant defense mechanism which is composed of enzymatic antioxidants like superoxide dismutase (SOD), catalase, (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX), and glutathione reductase (GR) and nonenzyma”
• Microbial and Plant-Assisted Bioremediation of Heavy Metal Polluted Environments: A Review (2017, neutral): “[142,145], that remove the free radicals [146].”
• Growth enhancement and drought tolerance of hybrid poplar upon inoculation with endophyte consortia (2016, background): “OH [76],[77] and [78] resulting in plant death.”
• The Effect of Blue-light-emitting Diodes on Antioxidant Properties and Resistance to Botrytis cinerea in Tomato (2013, background): “In the leaves of tall fescue, Xu et al. [35] found that the activities of catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) are increased by light treatment.”
• Interactions between nanoparticles and plants: phytotoxicity and defense mechanisms (2017, background): “Likewise, according to Mirzajani et al. (2014), exposure of Oryza sativa L. to Ag NPs led to the identification of 28 responsive proteins, for example, decrement/increment in abundance, which were involved in various important physiological and biochemical processes, for example, Ca2+ regulation and”
• Recent Developments in Enzymatic Antioxidant Defence Mechanism in Plants with Special Reference to Abiotic Stress (2021, background): “Evolution has equipped plants with a wide range of defence measures, which include various enzymatic strategies to scavenge free ROS in plant cells [9,10].”