Effect of exogenous catechin on alleviating O3 stress: The role of catechin-quinone in lipid peroxidation, salicylic acid, chlorophyll content, and antioxidant enzymes of Zamioculcas zamiifolia

Exogenous application of salicylic acid (SA) has been known for delaying ripening in many fruit and vegetables. But the function of endogenous SA in relation to postharvest fruit performance is still unexplored. To understand the role of endogenous SA in postharvest fruit ripening of tomato, 33 tomato lines were examined for their endogenous SA content, membrane stability index (MSI), and shelf life (SL) at turning and red stages of tomato fruit ripening. Six tomato lines having contrasting shelf lives from these categories were subjected further for ethylene (ET) evolution, 1-aminocyclopropane-1-carboxylic acid synthase (ACS), 1-aminocyclopropane-1-carboxylic acid oxidase (ACO), polygalacturonase (PG), pectin methyl esterase (PME), antioxidant assays and lipid peroxidation. It was found that high endogenous SA has a direct association with low ET evolution, which leads to the high SL of fruit. High lycopene content was also found to be correlated with high SA. Total antioxidants, PG, and PME decreased and lipid peroxidation increased from turning to red stage of tomato fruit development. Furthermore, these lines were subjected to expression analysis for SA biosynthesis enzymes viz. Solanum lycopersicum Isochorismate Synthase (SlICS) and SlPAL. Real-time PCR data revealed that high SL lines have high SlPAL4 expression and low SL lines have high SlPAL6 expression. Based on the results obtained in this study, it was concluded that endogenous SA regulates ET evolution and SL with the aid of the antioxidative defense system, and SlPAL4 and SlPAL6 genes play significant but opposite roles during fruit ripening.

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Application of super absorbent polymer and ascorbic acid to mitigate deleterious effects of cadmium in wheat

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632016v4638946 ◽

2016 ◽

Vol 46 (1) ◽

pp. 9-18 ◽

Cited By ~ 3

Author(s):

Hamid Reza Tohidi Moghadam

Keyword(s):

Heavy Metals ◽

Lipid Peroxidation ◽

Ascorbic Acid ◽

Antioxidant Enzymes ◽

Chlorophyll Content ◽

Seed Yield ◽

Seed Weight ◽

Super Absorbent Polymer ◽

Cd Contamination ◽

Absorbent Polymer

ABSTRACT The growing use of chemical fertilizers, insecticides and pesticides can cause potential contamination with heavy metals to soil and groundwater, posing environmental and health threats. Heavy metals can also affect crop yield. A greenhouse experiment was conducted to explore the role of ascorbic acid foliar application and soil-applied super absorbent to mitigate adverse effects of cadmium (Cd), in terms of biochemical parameters in wheat. The experiment was installed in a completely randomized design, with treatments arranged in a factorial scheme with three levels of super absorbent polymer (0 g kg-1, 4 g kg-1 and 8 g kg-1 of soil) by three levels of ascorbic acid (0 mM, 50 mM and 100 mM), with four replicates. The Cd contamination caused a significant increase in the accumulation of Cd in leaves and seeds, as well as in antioxidant enzymes activity and lipid peroxidation. It also decreased seed weight and chlorophyll content in wheat plants. The super absorbent increased seed yield (22.68 %), seed weight (19.31 %), chlorophyll (27.97 %) and ascorbic acid content (65.51 %), while it reduced the Cd accumulation in leaves (34.27 %) and seeds (32.97 %), as well as antioxidant enzymes activity and lipid peroxidation (43.77 %). Similar results were found when ascorbic acid was applied. Ascorbic acid increased seed yield, seed weight and chlorophyll content by 12.62 %, 17.66 % and 13.17 %, respectively. As a result, the super absorbent polymer and ascorbic acid could improve the survival capacity and yield of wheat plants in response to Cd contamination in the soil.

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The dynamics of indicators of peroxide metabolism in patients with cicatricial skin deformations in combination with metabolic syndrome in complex use of physiotherapeutic treatment methods and drinking mineral waters

Fizioterapevt (Physiotherapist) ◽

10.33920/med-14-2104-06 ◽

2021 ◽

pp. 45-55

Author(s):

K.V. Kazatseva ◽

S.N. Nagornev ◽

V.K. Frolkov ◽

E.V. Gusakova

Keyword(s):

Metabolic Syndrome ◽

Lipid Peroxidation ◽

Antioxidant Enzymes ◽

Mineral Water ◽

Effective Means ◽

Mineral Waters ◽

Combined Use ◽

Pathogenetic Therapy ◽

Peroxidation Processes

The article analyzes the role of lipid peroxidation processes in the pathogenesis of cicatricial skin changes, including in patients with metabolic syndrome. Baseline indices of LPO processes and antioxidant enzymes in patients with metabolic syndrome indicate the development of oxidative stress and accumulation of cytotoxic carbonyl products. The course use of a combination of fermenkol phonophoresis, fractional photothermolysis and mineral water «Essentuki №17» in patients with cicatricial changes in the skin and metabolic syndrome is accompanied by a decrease in the severity of insulin resistance and lipid peroxidation processes. The use of a complex of physiotherapeutic factors and drinking mineral water contributes to an increase in the coefficient of antioxidant protection by 54%. The revealed dynamics of the assessed parameters is realized due to the elimination of molecular inhibitors of antioxidant enzymes in conditions of an increase in the receptor sensitivity of tissues to insulin and a decrease in the level of glycemia. The manifestation of antioxidant activity in the combined use of physiotherapeutic methods and mineral waters for drinking purposes allows this technology to be considered as an effective means of pathogenetic therapy of cicatricial deformities of the skin in combination with metabolic syndrome.

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Effect of Salicylic Acid on Plant Physiological and Yield Traits of Soybean

Legume Research - An International Journal ◽

10.18805/lr-4527 ◽

2021 ◽

Author(s):

P. Kuchlan ◽

M.K. Kuchlan

Keyword(s):

Lipid Peroxidation ◽

Superoxide Dismutase ◽

Salicylic Acid ◽

Plant Growth ◽

Chlorophyll Content ◽

Seed Yield ◽

Foliar Spray ◽

Soybean Seed ◽

Plant Seed ◽

Filling Stage

Background: Salicylic acid (SA) is an endogenous plant growth regulator plays a vital role in plant growth, ion uptake, transport, interaction with other organisms and in the responses to environmental stress. The aim of the study was to find the effect of salicylic acid on chlorophyll content, superoxide dismutase and malondialdehyde level of leaves and seed yield parameters of soybean.Methods: Field trials were conducted during kharif 2018 and 2019 at ICAR-Indian Institute of Soybean Research, Indore farm (22.78oN, 75.88oE), India. Salicylic acid applied as foliar spray with (50,100 and 200 ppm) concentrations at vegetative stage (22-25 days after sowing) and at pod filling stage (57-60 days after sowing). Chlorophyll content, lipid peroxidation activity and superoxide dismutase enzyme, plant height, number of pod per plant, seed yield and seed index were determined.Result: Chlorophyll content, antioxidant enzyme were enhanced and the level of lipid peroxidation of leaves was reduced as compared to untreated plant when salicylic acid applied at critical stage of crop growth. Significant increase in soybean seed yield was observed both with concentration of 100 and 200 ppm salicylic acid. Foliar spray with salicylic acid @ 100 ppm at vegetative and at pod filling stage was very effective for better seed production programme to improve quantity as well as quality of soybean seeds.

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