Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress

Vega, Isis; Nikolić, Miroslav; Pontigo, Sofía; Godoy, Karina; Mora, Marı́a de la Luz; Cartes, Paula

doi:10.3390/agronomy9070388

Cited by 60 publications

(48 citation statements)

References 70 publications

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“…The remarkable increases in NPK was recorded in the current research due to Si+ proline application, this increase might be due to the role of Si in improving membrane H ± ATPase activity which enhances element uptake, mainly K + and Ca + and improve photosynthesis and water relations [ 83 ]. The helpful impact of Si on nutrient content was observed in some plants [ 8 , 42 ] and that could be explained by the regulation of key enzyme activity in the phenylpropanoid pathway [ 84 ] and the improvement of total phenol formation [ 85 ]. The role of proline in increasing NPK content under drought could be due to that proline is an amino acid and involved in increase plant tolerance to stresses by enhancement plant metabolism as well as increase nutrients uptake [ 86 ] as well as increase energy production in the electron transport chain and ATP synthesis [ 87 ].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet

et al. 2021

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Drought stress deleteriously affects growth, development and productivity in plants. So, we examined the silicon effect (2 mmol) and proline (10 mmol) individually or the combination (Si + proline) in alleviating the harmful effect of drought on total phenolic compounds, reactive oxygen species (ROS), chlorophyll concentration and antioxidant enzymes as well as yield parameters of drought-stressed sugar beet plants during 2018/2019 and 2019/2020 seasons. Our findings indicated that the root diameter and length (cm), root and shoot fresh weights (g plant−1) as well as root and sugar yield significantly decreased in sugar beet plants under drought. Relative water content (RWC), nitrogen (N), phosphorus (P) and potassium (K) contents and chlorophyll (Chl) concentration considerably reduced in stressed sugar beet plants that compared with control in both seasons. Nonetheless, lipid peroxidation (MDA), electrolyte leakage (EL), hydrogen peroxide (H2O2) and superoxide (O2●−) considerably elevated as signals of drought. Drought-stressed sugar beet plants showed an increase in proline accumulation, total phenolic compounds and up-regulation of antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) activity to mitigate drought effects. Si and proline individually or the combination Si + proline considerably increased root and sugar yield, sucrose%, Chl concentration and RWC, MDA and EL were remarkably reduced. The treatments led to adjust proline and total phenolic compounds as well as CAT and SOD activity in stressed sugar beet plants. We concluded that application of Si + proline under drought stress led to improve the resistance of sugar beet by regulating of proline, antioxidant enzymes, phenolic compounds and improving RWC, Chl concentration and Nitrogen, Phosphorus and Potassium (NPK) contents as well as yield parameters.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet

et al. 2021

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“…It is known that silicon promotes the production of phenolic compounds that have an antioxidant or structural role. In addition, it can improve toxicity to heavy metals such as aluminum [77].…”

Section: Discussionmentioning

confidence: 99%

Impact of Silicon Nanoparticles on the Antioxidant Compounds of Tomato Fruits Stressed by Arsenic

González-Moscoso

Martínez-Villegas

Cadenas‐Pliego³

et al. 2019

Foods

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Tomato fruit is rich in antioxidant compounds such as lycopene and β-carotene. The beneficial effects of the bioactive compounds of tomato fruit have been documented as anticancer activities. The objective of this research was to determine whether arsenic (As) causes changes in the content of antioxidant compounds in tomato fruits and whether Silicon nanoparticles (SiO2 NPs) positively influence them. The effects on fruit quality and non-enzymatic antioxidant compounds were determined. The results showed that As decreased the oxide-reduction potential (ORP), while lycopene and β-carotene were increased by exposure to As at a low dose (0.2 mg L−1), and proteins and vitamin C decreased due to high doses of As in the interaction with SiO2 NPs. A dose of 250 mg L−1 of SiO2 NPs increased glutathione and hydrogen peroxide (H2O2), and phenols decreased with low doses of As and when they interacted with the NPs. As for the flavonoids, they increased with exposure to As and SiO2 NPs. The total antioxidant capacity, determined by the ABTS (2,2´-azino-bis[3-ethylbenzthiazolin-6-sulfonic acid]) test, showed an increase with the highest dose of As in the interaction with SiO2 NPs. The application of As at low doses induced a greater accumulation of bioactive compounds in tomato fruit; however, these compounds decreased in high doses as well as via interaction with SiO2 NPs, indicating that there was an oxidative burst.

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“…However, in acid soils, barley growth is limited due to its high sensitivity to Al 3+ , which reduces both the yield and quality of the grains. In this context, some reports have demonstrated an improvement in the Al tolerance of barley following Si addition [17,29,30].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, it has been suggested that Si can alter the secondary metabolism of plants [2,[11][12][13][14]. In this regard, Si appears to stimulate the production of phenols in plants subjected to salinity, drought, temperature stress, UV radiation, cadmium, chromium [2], manganese [15], aluminum [16,17], nickel [11], soil acidity [18] and biotic [12,19,20] stresses. There is some evidence showing that the positive effects of Si on phenol metabolism in plants growing in stressful environments is due to (i) the regulation of the gene expression or activity of key enzymes in the phenylpropanoid pathway [21,22], (ii) the enhancement of total phenol production [17,23], and/or (iii) the formation of complexes involving lignin and carbohydrates [24,25] or Si-polyphenol in the cell wall [15].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, to the best of our knowledge only a few reports have described the effects of Si on the phenolic metabolism of barley subjected to Al stress. Moreover, the influence of Si on the phenolic metabolism of barley cultivars with contrasting Al tolerance has rarely been studied [17]. Therefore, the general objective of this research was to evaluate the effect of Si on phenol production and composition in tolerant and sensitive barley cultivars under Al stress.…”

Section: Introductionmentioning

confidence: 99%

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Silicon Modulates the Production and Composition of Phenols in Barley under Aluminum Stress

et al. 2020

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Silicon (Si) exerts beneficial effects in mitigating aluminum (Al) toxicity in different plant species. These include attenuating oxidative damage and improving structural strengthening as a result of the increased production of secondary metabolites such as phenols. The aim of this research was to evaluate the effect of Si on phenol production and composition in two barley cultivars under Al stress. Our conceptual approach included a hydroponic experiment with an Al-tolerant (Sebastian) and an Al-sensitive (Scarlett) barley cultivar treated with two Al doses (0 or 0.2 mM of Al) and two Si doses (0 or 2 mM) for 21 days. Chemical, biochemical and growth parameters were assayed after harvest. Our results indicated that the Al and Si concentration decreased in both cultivars when Al and Si were added in combination. Silicon increased the antioxidant activity and soluble phenol concentration, but reduced lipid peroxidation irrespective of the Al dose. Both barley cultivars showed changes in culm creep rate, flavonoids and flavones concentration, lignin accumulation and altered lignin composition in Si and Al treatments. We concluded that Si fertilization could increase the resistance of barley to Al toxicity by regulating the metabolism of phenolic compounds with antioxidant and structural functions.

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Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress

Cited by 60 publications

References 70 publications

Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet

Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet

Impact of Silicon Nanoparticles on the Antioxidant Compounds of Tomato Fruits Stressed by Arsenic

Silicon Modulates the Production and Composition of Phenols in Barley under Aluminum Stress

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