Reactive Oxygen Species Generation, Scavenging and Signaling in Plant Defense Responses

Zaid, Abbu; Wani, Shabir Hussain

doi:10.1007/978-3-030-27165-7_7

Cited by 47 publications

(26 citation statements)

References 134 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plants grown in salinity-affected areas accumulate higher levels of toxic ions responsible for different physiological abnormalities, including ionic imbalance, impaired gas exchange performance, loss of water homeostasis, alterations in the levels of metabolites, and reactive oxygen species (ROS)-mediated oxidative damage to the cellular compartments [ 10 , 11 ]. To counteract the detrimental effects of salt stress, plants adopt some fundamental mechanisms, including (i) toxic ion (Na + and Cl − ) exclusions or their compartmentation into vacuoles or old tissues; (ii) compatible solute accumulations; (iii) synthesis of numerous stress adaptation-related endogenous metabolites; and (iv) synthesis and activation of antioxidant enzymes [e.g., catalase, (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione peroxidase (GPX), peroxidase (POD), and glutathione S -transferase (GST)], and non-enzymatic antioxidants [e.g., carotenoids, phenolic compounds, flavonoids, ascorbate (AsA), and glutathione (GSH)] [ 10 , 12 , 13 , 14 ]. Unfortunately, the traditional crops cannot deploy salt tolerance potential to survive in salinity-affected soils, and a wide range of genetic diversity for salt tolerance in conventional crops, even local landraces, remains elusive.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Rahman

Mostofa

Keya

et al. 2021

IJMS

View full text Add to dashboard Cite

Soil salinization, which is aggravated by climate change and inappropriate anthropogenic activities, has emerged as a serious environmental problem, threatening sustainable agriculture and future food security. Although there has been considerable progress in developing crop varieties by introducing salt tolerance-associated traits, most crop cultivars grown in saline soils still exhibit a decline in yield, necessitating the search for alternatives. Halophytes, with their intrinsic salt tolerance characteristics, are known to have great potential in rehabilitating salt-contaminated soils to support plant growth in saline soils by employing various strategies, including phytoremediation. In addition, the recent identification and characterization of salt tolerance-related genes encoding signaling components from halophytes, which are naturally grown under high salinity, have paved the way for the development of transgenic crops with improved salt tolerance. In this review, we aim to provide a comprehensive update on salinity-induced negative effects on soils and plants, including alterations of physicochemical properties in soils, and changes in physiological and biochemical processes and ion disparities in plants. We also review the physiological and biochemical adaptation strategies that help halophytes grow and survive in salinity-affected areas. Furthermore, we illustrate the halophyte-mediated phytoremediation process in salinity-affected areas, as well as their potential impacts on soil properties. Importantly, based on the recent findings on salt tolerance mechanisms in halophytes, we also comprehensively discuss the potential of improving salt tolerance in crop plants by introducing candidate genes related to antiporters, ion transporters, antioxidants, and defense proteins from halophytes for conserving sustainable agriculture in salinity-prone areas.

show abstract

Section: Introductionmentioning

confidence: 99%

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Rahman

Mostofa

Keya

et al. 2021

IJMS

View full text Add to dashboard Cite

show abstract

“…The most dangerous disorder, resulted from the effect of pollutants, including crude oil and petroleum hydrocarbons, on plants, is oxidative stress, which leads to the formation of many reactive oxygen species (ROSs) with high oxidizing capacity in cells (superoxide radical (O 2 •− ), H 2 O 2 , hydroxyl radical ( • OH), etc.). In one respect, the ROSs destroy cell-membrane complexes, disrupt transport processes and intracellular reactions, and thereby inhibit growth activity [ 13 , 14 , 15 ]. Contrastingly, plants use ROS as a second messenger in many signal transduction cascades, and therefore ROS accumulation is essential to plant development and defense [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Crude Oil on Growth, Oxidative Stress and Response of Antioxidative System of Two Rye (Secale cereale L.) Varieties

Skrypnik

Maslennikov

Novikova

et al. 2021

Plants

View full text Add to dashboard Cite

Rye (Secale cereale L.) is one of the most important cereal crops in Eastern and Northern Europe, showing better tolerance to environmental stress factors compared to wheat and triticale. Plant response to the crude oil-polluted soil depends on plant species, oil concentration, time of exposure, etc. The current study is aimed at investigating the growth, oxidative stress and the response of antioxidative system of two rye varieties (Krona and Valdai) cultivated on crude oil-contaminated soils at different concentrations (1.5, 3.0, 6.0, and 12.0%). Inhibition of rye growth was observed at crude oil concentrations of above 3% for above-ground plant parts and of above 1.5% for roots. A decrease in content of chlorophyll a and total chlorophylls in Krona variety was detected at 1.5% oil concentration in soil and in Valdai variety at 3% oil concentration. Compared with the control, the content of malondialdehyde was significantly increased in the Krona variety at 3% oil concentration and in Valdai variety at 6% oil concentration. The crude oil-induced oxidative stress was minimized in rye plants by the enhanced contents of low-molecular antioxidants (proline, non-protein thiols, ascorbic acid, phenolic compounds) and activities of superoxide dismutase, catalase, ascorbate peroxidase, and glutathione peroxidase. The strongest positive correlation was detected between the content of malondialdehyde and contents of proline (r = 0.89–0.95, p ≤ 0.05) and phenolic compounds (r = 0.90–0.94, p ≤ 0.05) as well as superoxide dismutase activity (r = 0.81–0.90, p ≤ 0.05). Based on the results of a comprehensive analysis of growth and biochemical parameters and of the cluster analysis, Valdai variety proved to be more resistant to oil pollution. Due to this, Valdai variety is considered to be a promising rye variety for cultivation on moderately oil-polluted soils in order to decontaminate them. At the same time, it is necessary to conduct further studies aimed at investigating oil transformation processes in the soil-rye system, which would make it possible to determine the efficiency of using this cereal for soil remediation.

show abstract

“…All environmental stresses (biotic and a biotic) generate oxidative stress which can easily harm cell components and cause their dysfunction pursued by the uptake and over production of ROS at high rates. Enzyme complexes of nicotinamide adenine dinucleotide phosphaten (NADPH) oxidases generally involved in the generation of ROS, which then usually accumulate in different organelles of cell especially cytoplasm, mitochondria and nucleus [ 47 , 48 ]. Uncontrolled production of ROS results in protein denaturation, carbohydrates oxidation, oxidation of RNA and DNA, lipid peroxidation in cellular compartments, and it severely affects enzymatic activity in plants [ 49 ].…”

Section: Signaling Response In Plants Against Heavy Metal Stressmentioning

confidence: 99%

Glycine Betaine Accumulation, Significance and Interests for Heavy Metal Tolerance in Plants

Ali

Abbas

Seleiman

et al. 2020

Plants

View full text Add to dashboard Cite

Unexpected biomagnifications and bioaccumulation of heavy metals (HMs) in the surrounding environment has become a predicament for all living organisms together with plants. Excessive release of HMs from industrial discharge and other anthropogenic activities has threatened sustainable agricultural practices and limited the overall profitable yield of different plants species. Heavy metals at toxic levels interact with cellular molecules, leading towards the unnecessary generation of reactive oxygen species (ROS), restricting productivity and growth of the plants. The application of various osmoprotectants is a renowned approach to mitigate the harmful effects of HMs on plants. In this review, the effective role of glycine betaine (GB) in alleviation of HM stress is summarized. Glycine betaine is very important osmoregulator, and its level varies considerably among different plants. Application of GB on plants under HMs stress successfully improves growth, photosynthesis, antioxidant enzymes activities, nutrients uptake, and minimizes excessive heavy metal uptake and oxidative stress. Moreover, GB activates the adjustment of glutathione reductase (GR), ascorbic acid (AsA) and glutathione (GSH) contents in plants under HM stress. Excessive accumulation of GB through the utilization of a genetic engineering approach can successfully enhance tolerance against stress, which is considered an important feature that needs to be investigated in depth.

show abstract

Reactive Oxygen Species Generation, Scavenging and Signaling in Plant Defense Responses

Cited by 47 publications

References 134 publications

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Effect of Crude Oil on Growth, Oxidative Stress and Response of Antioxidative System of Two Rye (Secale cereale L.) Varieties

Glycine Betaine Accumulation, Significance and Interests for Heavy Metal Tolerance in Plants

Contact Info

Product

Resources

About