Silicon in mitigation of abiotic stress-induced oxidative damage in plants

Mostofa, Mohammad Golam; Rahman, Md. Mezanur; Ansary, Mesbah Uddin; Keya, Sanjida Sultana; Abdelrahman, Mostafa; Miah, Giashuddin; Tran, Lam-Son Phan

doi:10.1080/07388551.2021.1892582

Cited by 114 publications

(59 citation statements)

References 122 publications

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“…Salt stress also suppresses the activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO), a key enzyme involved in carbon dioxide (CO 2 ) assimilation during the dark phase of photosynthesis [ 38 ]. In addition, salinity also induces the production of ROS, including hydroxyl radical (OH • ), superoxide (O 2 •− ), hydrogen peroxide (H 2 O 2 ) and singlet oxygen ( 1 O 2 ), in cellular organelles like chloroplasts, mitochondria, peroxisomes, and endoplasmic reticulum [ 12 , 13 ]. The elevated levels of ROS can negatively affect plant growth and developmental processes by causing protein synthesis reduction, cell membrane destruction, genomic instability, and damage to photosynthetic apparatus [ 13 , 39 ].…”

Section: Mechanisms Of Salinity-mediated Adverse Effects On Plantsmentioning

confidence: 99%

“…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%

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

Rahman

Mostofa

Keya

et al. 2021

IJMS

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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.

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Section: Mechanisms Of Salinity-mediated Adverse Effects On Plantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Rahman

Mostofa

Keya

et al. 2021

IJMS

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“…Silicon (Si) is the second most abundant element on Earth crust, being considered as a beneficial element for plant growth [ 14 ]. Although there is no consensus about its role as an essential nutrient, the involvement of Si in several metabolic pathways and physiological events is well described in the literature [ 15 , 16 , 17 ], especially regarding its ability to improve plant stress tolerance [ 18 ]. Si, applied either by soil amendment, foliar spray or seed priming, is highly recognized for its potential to reduce the negative effects of different stressful conditions on plants, acting at different levels of plant physiology, reducing the overproduction of reactive oxygen species (ROS) and boosting the plant antioxidant system [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…Although there is no consensus about its role as an essential nutrient, the involvement of Si in several metabolic pathways and physiological events is well described in the literature [ 15 , 16 , 17 ], especially regarding its ability to improve plant stress tolerance [ 18 ]. Si, applied either by soil amendment, foliar spray or seed priming, is highly recognized for its potential to reduce the negative effects of different stressful conditions on plants, acting at different levels of plant physiology, reducing the overproduction of reactive oxygen species (ROS) and boosting the plant antioxidant system [ 17 ]. Nowadays, not only bulk forms of Si are considered as promising tools to increase plant resilience, but also their nano-sized counterparts, namely silicon dioxide nanomaterials (nano-SiO 2 ), are being pointed as a more efficient way to provide Si [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Silicon Improves the Redox Homeostasis to Alleviate Glyphosate Toxicity in Tomato Plants—Are Nanomaterials Relevant?

et al. 2021

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Given the widespread use of glyphosate (GLY), this agrochemical is becoming a source of contamination in agricultural soils, affecting non-target plants. Therefore, sustainable strategies to increase crop tolerance to GLY are needed. From this perspective and recalling silicon (Si)’s role in alleviating different abiotic stresses, the main goal of this study was to assess if the foliar application of Si, either as bulk or nano forms, is capable of enhancing Solanum lycopersicum L. tolerance to GLY (10 mg kg−1). After 28 d, GLY-treated plants exhibited growth-related disorders in both shoots and roots, accompanied by an overproduction of superoxide anion (O2•−) and malondialdehyde (MDA) in shoots. Although plants solely exposed to GLY have activated non-enzymatic antioxidant mechanisms (proline, ascorbate and glutathione), a generalized inhibition of the antioxidant enzymes was found, suggesting the occurrence of great redox disturbances. In response to Si or nano-SiO2 co-application, most of GLY phytotoxic effects on growth were prevented, accompanied with a better ROS removal, especially by an upregulation of the main antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Overall, results pointed towards the potential of both sources of Si to reduce GLY-induced oxidative stress, without major differences between their efficacy.

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“…Si exhibits strong positive response towards resistance against biotic and abiotic stress, toxicity of metals as copper, zinc, iron etc. (Mostofa et al, 2021). Previously, no attention was provided to Si treatment for plants because of the high Si content in soil.…”

Section: Introductionmentioning

confidence: 99%

Agro-Waste Mediated Silica Nanoparticles and Their Application to Sustainable Agriculture

Goswami¹,

Mathur²

2021

Preprint

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Sustainable managing of environment implies the utilization of green approaches in agronomy for growth and crop protection. Since crop production is determined by extensive application of pesticide to resist plant infection and fertilizers to increase fertility of soil, these processes result in ecological unit deterioration as well economic cost. The current research aims at assessment of the potential of nanofertilizers and fungicidal activity of Silica nanoparticles (SiNPs) which have synthesized from agro-waste (sugarcane bagasse and corn cob).SiNPs Nanoparticles display exceptional biological functions and might behave as novel antifungal agents. SiNPs were characterized via scanning electron microscopy (SEM), Fourier transmission infrared spectroscopy (FTIR), X-ray diffraction (XRD) and energy dispersive X-ray (EDX).The plant reaction to SiNPs treatments were observed in relation to germination, growth characteristics, protein, chlorophyll, antioxidant and antifungal activities. Germination rate was enhanced upto 95.5% with SiNPsconcentration and growth parameters were increased upto1000ugL-1. The physiological changes showed the increment in protein and chlorophyll content upto 14.8mg g-1 and 4.08 mg g-1, respectively. Other than this, maximum mycelia growth inhibition was reported for Fusarium oxysporum and Aspergillus niger as73.42% and 58.92%, respectively. SiNPs positive response on Eruca sativa plant might improve its productivity and act as a potential antifungal agent against pathogenic fungi.

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Silicon in mitigation of abiotic stress-induced oxidative damage in plants

Cited by 114 publications

References 122 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

Silicon Improves the Redox Homeostasis to Alleviate Glyphosate Toxicity in Tomato Plants—Are Nanomaterials Relevant?

Agro-Waste Mediated Silica Nanoparticles and Their Application to Sustainable Agriculture

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