Exogenously applied selenium reduces oxidative stress and induces heat tolerance in spring wheat

Iqbal, Muhammad; Hussain, İqbal; Liaqat, Hena; Ashraf, Muhammad Arslan; Rasheed, Rizwan; Rehman, Aziz Ur

doi:10.1016/j.plaphy.2015.05.012

Cited by 109 publications

(56 citation statements)

References 69 publications

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“…The application of macro-and micro-nutrients is one of the management approaches for coping with environmental stresses such as soil salinity [21]. Selenium (Se) has been considered as a beneficial element for crop production which plays an important role in physio-biochemical processes [22,23]. Although higher plants do not require Se for their growth and development [24,25], supplementation of Se at lower dosages not only protects plants from ROS induced oxidative damage by activating the antioxidative mechanisms [22], but also improves the Se content in the edible parts of the crop plants [26].…”

Section: Of 27mentioning

confidence: 99%

“…To situate the scientific context compiled in this review article, it should be taken into account that Se at low concentrations helped plants to alleviate exposed stress from its exterior environment, especially regarding soil salinity. Therefore, an exogenous application of Se has gained considerable interest in the scientific community around the world [22,24,94]. For instance, exogenously applied Se played a significant role in appraising the physiological and biochemical mechanisms ( Table 1) involved in salinity tolerance in cucumber [124], canola [24], and parsley [133], which as a result helped plants to survive better in salt-stressed environments.…”

Section: Se-mediated Improvement In Physiological Attributesmentioning

confidence: 99%

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An Overview of Hazardous Impacts of Soil Salinity in Crops, Tolerance Mechanisms, and Amelioration through Selenium Supplementation

Kamran

Parveen

Ahmar

et al. 2019

IJMS

311

167

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Soil salinization is one of the major environmental stressors hampering the growth and yield of crops all over the world. A wide spectrum of physiological and biochemical alterations of plants are induced by salinity, which causes lowered water potential in the soil solution, ionic disequilibrium, specific ion effects, and a higher accumulation of reactive oxygen species (ROS). For many years, numerous investigations have been made into salinity stresses and attempts to minimize the losses of plant productivity, including the effects of phytohormones, osmoprotectants, antioxidants, polyamines, and trace elements. One of the protectants, selenium (Se), has been found to be effective in improving growth and inducing tolerance against excessive soil salinity. However, the in-depth mechanisms of Se-induced salinity tolerance are still unclear. This review refines the knowledge involved in Se-mediated improvements of plant growth when subjected to salinity and suggests future perspectives as well as several research limitations in this field.

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Section: Of 27mentioning

confidence: 99%

Section: Se-mediated Improvement In Physiological Attributesmentioning

confidence: 99%

An Overview of Hazardous Impacts of Soil Salinity in Crops, Tolerance Mechanisms, and Amelioration through Selenium Supplementation

Kamran

Parveen

Ahmar

et al. 2019

IJMS

311

167

View full text Add to dashboard Cite

show abstract

“…A). Namely, this enzyme is an efficient scavenger of H 2 O 2 and hydroperoxides of unsaturated fatty acids using reduced GSH and, thus, plays an important role in protecting membrane lipids from oxidative disintegration ( Iqbal et al, ). Even though the existence of essential Se‐dependent proteins has not been demonstrated in higher plants yet, a number of studies ( Hartikainen et al, , 2000; Cartes et al, ) revealed a positive correlation between the Se concentration and GPX activity.…”

Section: Discussionmentioning

confidence: 99%

Effect of different forms of selenium on the plant–soil–earthworm system

Štolfa

Velki

Vuković

et al. 2017

J. Plant Nutr. Soil Sci.

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Selenium (Se) is an essential micronutrient for humans, animals, and certain lower plants, but at higher concentrations Se becomes toxic to organisms. The boundary between the Se beneficial effect and its toxicity is narrow and depends on its chemical form, applied concentration, and other environmentally regulating factors. Due to the potential risk of toxicity in higher concentration, the aim of this study was to estimate the impact of increased concentrations of different forms of Se on the response of the wheat–soil–earthworm system. Soil, earthworms, and wheat grains were exposed to the Se in form of selenite and selenate in concentrations of 0.01, 0.1, and 1 mg kg−1. As an indicator of oxidative stress in wheat, lipid peroxidation levels (LPO) and total H2O2 content were determined, while antioxidative response was determined by catalase (CAT), glutathione peroxidase (GPX), and glutathione reductase (GR) activities. The biomarker responses in earthworms were determined by acetylcholinesterase (AChE), carboxylesterase (CES), and antioxidative enzymes (CAT and glutathione S‐transferase) activities. Selenite and selenate increased Se content in the wheat and earthworms, while selenate application was more efficient, indicating higher bioaccumulation of this Se form. Both Se forms did not cause significant changes in the LPO level and H2O2 content, while GPX activities were elevated in all treatments, suggesting that oxidative stress was not induced in wheat. In earthworms, Se significantly reduced activities of AChE and CAT at some concentrations, while CES activity was increased at all concentrations applied. This study showed significant impact of Se on measured biochemical responses in wheat and earthworms, indicating the disruption of homeostasis. Obtained results can serve as basis for further studies on Se effects and will help in including different aspects necessary for understanding of Se impact on different components of soil ecosystems.

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“…For several reasons, researchers chose Se because of its application in ecological, ecotoxicological, and radio ecological sciences. Se may exert diverse beneficial effects at low concentrations including growth promoting activities of higher plants [58][59][60][61], tolerance of plants by enhancing their antioxidative capacity [62][63][64] and increasing plant resistance against oxidative stress [65][66][67][68].…”

Section: Applications Of Selenium Nanoparticlesmentioning

confidence: 99%

Green Synthesis of Selenium Nanoparticles from Broccoli, Characterization, Application and Toxicity

Kapur¹,

Soni²,

Kohli³

2017

Adv Tech Biol Med

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Selenium in broccoliBroccoli belongs to the Brassicaceae family, originated in the Mediterranean regions and distributed in Europe and in the United States. Broccoli is rich in micronutrients such as carotene, vitamin C and folic acid-fibers, phytochemicals such as glucosinolates (GLs) and *Corresponding author: Kanchan Kohli, PhD, Associate Professor, Department of Pharmaceutics, Jamia Hamdard, Hamdard University, New Delhi 110062, India, Tel: +911126059688; E-mail: drkanchankohli@gmail.com AbstractPlant-based diets and phytochemicals present in plants can be used to decrease the risk of cancer. This article deals with Brassica species and broccoli in particular which are associated with reduced risk of several important cancers. These plants mainly contain selenium (Se) covalently bound in a number of different chemical forms which is mainly responsible for its biological activity. Further, several enzymes contain selenium in the form of the unusual selenocysteine amino acid which act on free radicals. Broccoli has the ability to accumulate Se many-fold beyond the concentration of Se present in the soil. Reflecting on the above it can be suggested that development of methods to increase the natural accumulation of Se in broccoli may greatly enhance its health-promoting properties. The present article details about green synthesis of selenium nanoparticles and their methods of characterizations. Green synthesis is a biological procedure which can be achieved can be achieved by using plant extracts. This method is capable of producing SeNPs in a size range of about 50-150 nm, under ambient conditions. It was found that SeNPs are able to inhibit the cell growth by dose-dependent manner. In addition, combination of SeNPs and doxorubicin shows better anticancer effect than individual treatments. The present review also brings to light about the causes and implications of toxic effects posed by Se nanoparticles as well as applications of Se nanoparticles in medicine.Green Synthesis of Selenium Nanoparticles from Broccoli, Characterization, Application and Toxicity Citation: Kapur M, Soni K, Kohli K (2017) Green Synthesis of Selenium Nanoparticles from Broccoli, Characterization, Application and Toxicity. Adv Tech Biol Med 5: 198. doi: 10.4172/2379-1764.1000198 Page 2 of 7 ManaviVolume Se Nanoparticles Characterization [42]An initial characterization of the test substance is imperative before any toxicity screening is commenced. A more extensive and complete characterization, including size distribution, shape, surface area, surface chemistry, crystallinity, porosity, agglomeration state, surface charge, solubility, etc., is recommended for nanomaterials in order to determine the correct correlation between their physicochemical properties and the biological effects they elicit [43][44][45][46].

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Exogenously applied selenium reduces oxidative stress and induces heat tolerance in spring wheat

Cited by 109 publications

References 69 publications

An Overview of Hazardous Impacts of Soil Salinity in Crops, Tolerance Mechanisms, and Amelioration through Selenium Supplementation

An Overview of Hazardous Impacts of Soil Salinity in Crops, Tolerance Mechanisms, and Amelioration through Selenium Supplementation

Effect of different forms of selenium on the plant–soil–earthworm system

Green Synthesis of Selenium Nanoparticles from Broccoli, Characterization, Application and Toxicity

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