· Since plants are a major source of selenium for humans and animals, understanding selenium transport, toxicity, and metabolism in plants is an important topic of research. Selenium and sulfur are similar both physically and chemically, and they share the same transport machinery and participate in the same metabolic processes in plants.
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:Selenium in PlantsSelenium AccumulationSelenium in Soil · In general, plants are organized into three groups with respect to selenium accumulation: selenium non-accumulators (<100 mg Se kg −1 DW),
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· Major conclusions. Selenium and sulfur share the same primary metabolism. When grown in the same environment, most plant species have similar tissue Se/S quotients. However, Se-hyperaccumulator species, which can have tissue Se concentrations >1 mg g −1 dry matter, have larger Se/S quotients than other species.
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· Selenium accumulation in plant foods. J. Finley. Published in Nutrition reviews 1 June 2005. Agricultural and Food Sciences, Environmental Science. Selenium (Se) is an essential nutrient, and Se deficiency is associated with disease conditions and general impairment of the immune system. Supplementation of Se to humans already
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· The Se concentration in edible plants is determined by the Se phytoavailability in soils. Selenium is not an essential element for plants, but excessive Se can be toxic. Thus, soil Se
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Selenium (Se) is an essential micronutrient for many organisms, including plants, animals and humans. As plants are the main source of dietary Se, plant Se metabolism is therefore important for Se nutrition of humans and other animals. However, the concentration of Se in plant foods varies between areas, and too much Se can lead to toxicity. As we discuss
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· Plants accumulate and tolerate Se to varying degrees, up to 15,000 mg Se/kg dry weight for Se hyperaccumulators. Plant Se accumulation may exert positive or negative effects on other species in the community. The movement of plant Se into ecological partners may benefit them at low concentrations, but cause toxicity at high
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Plant Se accumulation is very relevant for environmental and human health. Selenium is both essential at low levels and toxic at high levels, and both Se deficiency and toxicity are problems worldwide. Selenium can positively affect crop productivity and nutritional value. Plants may also be used to clean up excess environmental Se.
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· On the mechanism of selenium tolerance in selenium-accumulating plants: purification and characterization of a specific selenocysteine methyltransferase from cultured cells of Astragalus bisculatus Eur. J. Biochem. , 239 ( 1996 ) , pp. 235-238 , 10.1111/j.1432-1033.1996.0235u.x
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Abstract. Selenium (Se) is an essential nutrient, and Se deficiency is associated with disease conditions and general impairment of the immune system. Supplementation of Se to humans already consuming the RDA may help to prevent certain cancers. A convincing argument can be made for augmenting the food supply with Se, and Se-enhanced
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· Selenium at lower concentrations promotes plant biotic and abiotic stress tolerance; this function is modulated by enhancing antioxidant activity (Ulhassan et al., 2019a; Hasanuzzaman et al., 2020a). Under stress conditions, the disturbance in redox balance causes a higher accumulation of ROS molecules, which are catalyzed by
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· Selenium is a micronutrient with a wide range of functions in animals, including humans, and in microorganisms such as microalgae. However, its role in plant metabolism remains ambiguous. Recent
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· Selenium hyperaccumulator plants can accumulate Se to at least 0.1% of dry weight while growing on naturally seleniferous soil. Selenium hyperaccumulation has been reported for 45 taxa from six dicot families; they are perennials native to seleniferous areas, predominantly in western North America. Compared to other plants,
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:Selenium in PlantsSelenium Accumulation By Plants · Combining Kohala soil speciation data with concentrations in parent rock and plants further suggests that selenium association with organic matter limits its
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· This Special Issue of Plants will focus on plant Se biochemistry, uptake and metabolism, molecular mechanisms of Se responses and resistance in plants, interactions of Se with other
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· Neuhierl B, Böck A (1996) On the mechanism of selenium tolerance in selenium accumulating plants. Purification and characterization of a specific selenocysteine methyltransferase from cultured cells of Astragalus bisulcatus. Eur J Biochem 239:235–238 Article
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:Selenium in PlantsSelenium AccumulationSelenium is not an essential element for plants, but excessive Se can be toxic. Thus, soil Se phytoavailability determines the ecology of plants. Most plants cannot grow on
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· Selenium resembles sulfur (S) chemically and shares a similar pathway for uptake and translocation in plants. For example, SeO 3 2− and SeO 4 2− are analogs of SO 3 2− and SO 4 2−, respectively.Therefore, they can compete with each other in acidic conditions (Golob et al., 2016; González-Morales et al., 2017).).
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:Selenium in PlantsSelenium in SoilPlant Sources of Selenium · Selenium (Se) hyperaccumulators are a unique group of plants that can accumulate this element in their aerial parts at concentrations exceeding 100 mg kgDW
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· Abstract Samples of different grass types, white clover, red clover, dandelion, English plantain, different sorts of vegetables, such as garlic, radish and carrot, with the associated soil samples were collected at sites located 300 to 600 meters away from the coal-fired thermal power plant Šoštanj in the Šalek valley in Slovenia. In the soil
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· Therefore, Se-enriched plants could be applied as human food to reduce deficiency problems and deliver health benefits. This review describes the recent studies on the enrichment of Se-containing plants in particular Se accumulation and speciation, their functional properties related to human health, and future perspectives for developing Se
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:Selenium in PlantsSelenium AccumulationAccumulation in PlantsOn the mechanism of selenium tolerance in selenium-accumulating plants – purification and characterization of a specific selenocysteine methyltransferase from cultured cells of Astragalus bisculatus.
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· Organoselenides can promote plant growth, improve nutritional quality, and play an important regulatory function in plant ecosystems. The release of selenium-containing compounds into the soil by Se hyperaccumulators can promote the growth of Se accumulators but inhibit the growth and distribution of non-Se accumulators.
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:Selenium in PlantsPublish Year:2009 · Hyperaccumulation. 1 Introduction: An Ecological Perspective on Selenium Accumulation by Plants. Selenium (Se) is not an essential element for
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· Abstract. Essential selenium (Se) metabolism, as found in some photosynthetic cyanobacteria and algae, appears to have been lost in plants. Although not essential, Se is readily taken up by plants due to its similarity to sulfur (S), and typically plant accumulation of Se parallels that of S. In contrast, some plant species appear to
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Contents 1582 I. 1582 II. 1583 III. 1588 IV. 1590 V. 1592 1592 References 1592 SUMMARY: The importance of selenium (Se) for medicine, industry and the environment is increasingly apparent. Se is essential for many species, including humans, but toxic at elevated concentrations. Plant Se accumulation
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· In non-selenium-accumulating species, most of the selenium is found in the proteinbound SeMet form, whereas in selenium-accumulating plants, Se is mostly found in non-protein forms such as Se
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· The yield trends were similar with and without AMF addition, increasing with higher selenium concentrations. The maximum yield was observed at 8 mg L −1 selenium, with values of 316.12 g and 371.72 g, respectively. Under 4 and 8 mg L −1 selenium treatments, AMF addition significantly increased the yield per plant by 17.59%
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:Selenium in PlantsPlants That Accumulate SeleniumSe Hyperaccumulators · All plants readily take up and accumulate Se in all their tissues, quite similar to their utilization of the analogous element S [ 4 ]. Selenate is the dominant bioavailable form of Se in soils, and thus the
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· Generation of the salt-tolerant wheat mutant lines with high selenium In accordance with previous findings (Ma et al. 2021), a significant number of salt-tolerant wheat mutant plants were generated through EMS (ethylmethanesulfonate)-mediated mutagenesis, utilizing the bread wheat cultivar ‘Jimai 22’ (J22) as the wild type.. These
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