Comparative responses to silicon and selenium in relation to antioxidant enzyme system and the glutathione-ascorbate cycle in flowering Chinese cabbage ( Brassica campestris L. ssp. chinensis var. utilis ) under cadmium stress

Wu, Zhichao; Лю, Шуай; Zhao, Jie; Wang, Fuhua; Du, Yifeng; Sumin, Zou; Li, Hanmin; Wen, Desheng; Huang, Yongdong

doi:10.1016/j.envexpbot.2016.09.005

Cited by 150 publications

(44 citation statements)

References 43 publications

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“…Thus, plants can maintain homeostasis by two different detoxification mechanisms involving non-enzymatic and enzymatic antioxidants (Mittler, 2002; Arbona et al, 2003; Apel and Hirt, 2004; Sytar et al, 2013; Wu et al, 2017). In plants, superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) are the main enzymatic antioxidants, whereas carotenoids, tocopherols, ascorbate, and glutathione are classified as the non-enzymatic antioxidants (Asada, 1999; Racchi, 2013; Kim et al, 2014b,c).…”

Section: Defense Mechanism Against Ros Generationmentioning

confidence: 99%

“…Carotenoids are synthesized in plastids and consist of 40-carbon isoprenoids. According to Lu and Li (2008), carotenoids are classified as carotenes, which include the carbon and hydrogen atoms, and xanthophylls that contain the oxygenated form of carotenes (Wu et al, 2017). The most important role of α-tocopherol is that it can eliminate 1 O 2 ,

O_{2}^{-}

, and OH free radicals, which are generated in the thylakoid membranes; thus, it can prevent lipid peroxidation (Fryer, 1992; Kataria, 2017).…”

Section: Defense Mechanism Against Ros Generationmentioning

confidence: 99%

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Silicon Regulates Antioxidant Activities of Crop Plants under Abiotic-Induced Oxidative Stress: A Review

et al. 2017

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Silicon (Si) is the second most abundant element in soil, where its availability to plants can exhilarate to 10% of total dry weight of the plant. Si accumulation/transport occurs in the upward direction, and has been identified in several crop plants. Si application has been known to ameliorate plant growth and development during normal and stressful conditions over past two-decades. During abiotic (salinity, drought, thermal, and heavy metal etc) stress, one of the immediate responses by plant is the generation of reactive oxygen species (ROS), such as singlet oxygen (1O2), superoxide (O2−), hydrogen peroxide (H2O2), and hydroxyl radicals (OH), which cause severe damage to the cell structure, organelles, and functions. To alleviate and repair this damage, plants have developed a complex antioxidant system to maintain homeostasis through non-enzymatic (carotenoids, tocopherols, ascorbate, and glutathione) and enzymatic antioxidants [superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX)]. To this end, the exogenous application of Si has been found to induce stress tolerance by regulating the generation of ROS, reducing electrolytic leakage, and malondialdehyde (MDA) contents, and immobilizing and reducing the uptake of toxic ions like Na, under stressful conditions. However, the interaction of Si and plant antioxidant enzyme system remains poorly understood, and further in-depth analyses at the transcriptomic level are needed to understand the mechanisms responsible for the Si-mediated regulation of stress responses.

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Section: Defense Mechanism Against Ros Generationmentioning

confidence: 99%

O_{2}^{-}

, and OH free radicals, which are generated in the thylakoid membranes; thus, it can prevent lipid peroxidation (Fryer, 1992; Kataria, 2017).…”

Section: Defense Mechanism Against Ros Generationmentioning

confidence: 99%

Silicon Regulates Antioxidant Activities of Crop Plants under Abiotic-Induced Oxidative Stress: A Review

et al. 2017

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“…Since all the treatments applied in the present work induced an increase in the GPX activity, it is suggested that both the Se and the Cs-PAA complex induce this increase by themselves, and when applied as a whole the effect is enhanced. GSH content was not affected by the treatments, in the same way as in an experiment with Chinese cabbage subjected to stress, due to the high concentration of heavy metal Cd, where GSH increase when Se was applied in combination with Si; however, there was no difference when applying Se alone [24]. In contrast, in an experiment performed on wheat [25], GSH increased by 18% when Se was applied in conjunction with S.…”

Section: Biochemical Variablesmentioning

confidence: 60%

Lettuce Biofortification with Selenium in Chitosan-Polyacrylic Acid Complexes

et al. 2018

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Selenium (Se) is an essential element of the human diet. Therefore, it is necessary to implement Se in selenium-deficient soils and in the nutrient solution of soilless system culture. Although it is not considered as an essential element for plants, Se provides benefits at the level of redox metabolism, increasing the resistance of plants to various stress factors. The increase of the availability of Se, with the use of biopolymer complexes, was sought in Lactuca sativa var. Great Lakes, grown in substrate pots treated with SeO2 (5 mg Se/plant), chitosan-polyacrylic acid complex + Se (Cs-PAA + Se) (5 mg Se/plant), and chitosan-polyacrylic acid complex (Cs-PAA). The redox metabolism was modified by increasing the enzymatic activity of catalase and glutathione peroxidase. The use of Cs-PAA + Se biopolymer complexes increased Se up to 24 mg/Kg dry weight (DW) in plant tissues.

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“…Regarding the synthesis of antioxidants, Kim and collaborators in 2017 [66] made an extensive compendium of the effects of Si on antioxidant metabolism, evidencing that there is more information related to the increase of enzymatic antioxidants such as SOD, CAT, and APX in plants subjected to a variety of abiotic stresses such as heavy metal toxicity [44,67], salinity [68,69], and UV radiation [70], among others.…”

Section: Proposed Mechanisms Of Action Of Iodine Selenium and Silicmentioning

confidence: 99%

The Use of Iodine, Selenium, and Silicon in Plant Nutrition for the Increase of Antioxidants in Fruits and Vegetables

Medrano-Macías¹,

Mendoza-Villarreal²,

ValentínRobledo-Torres³

et al. 2018

Antioxidants in Foods and Its Applications

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Iodine, silicon, and selenium are considered elements not essential for the metabolism of plants. However, these elements are vital for humans, and their presence as traces in food is beneficial. The use of I, Si, and Se in the fertilization programs of the plants allows, on the one hand, the mineral biofortification of the crops and, on the other hand, through mechanisms not yet fully understood, the production and accumulation of more antioxidants in the edible organs. This chapter provides an overview about the use of I, Si, and Se both for mineral biofortification and for the increase in the concentration of antioxidants in plants, with an emphasis on redox metabolism adjustments and antioxidant chemical species studied. The scope of the chapter is on horticultural species in the open field and under greenhouse or tunnels.

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Comparative responses to silicon and selenium in relation to antioxidant enzyme system and the glutathione-ascorbate cycle in flowering Chinese cabbage ( Brassica campestris L. ssp. chinensis var. utilis ) under cadmium stress

Cited by 150 publications

References 43 publications

Silicon Regulates Antioxidant Activities of Crop Plants under Abiotic-Induced Oxidative Stress: A Review

Silicon Regulates Antioxidant Activities of Crop Plants under Abiotic-Induced Oxidative Stress: A Review

Lettuce Biofortification with Selenium in Chitosan-Polyacrylic Acid Complexes

The Use of Iodine, Selenium, and Silicon in Plant Nutrition for the Increase of Antioxidants in Fruits and Vegetables

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