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selenium in higher plants

Selenium in higher plants: physiological role, antioxidant ...

It is now well established that virtually all abiotic and biotic stresses induce or involve oxidative stress to some degree and the ability of plants to control oxidant levels is highly correlated with stress tolerance. Recently, the role of Selenium (Se) as an antioxidant has generated a wide interest in it. In trace amounts, Se is an essential micronutrient and has important benefits for ...Selenium in Plants - SpringerLink2014-8-6 · Abstract. Selenium (Se) and sulfur (S) are chemically similar. Most plants cannot discriminate between the two, with the exception of Se hyperaccumulator species, which preferentially accumulate Se over S. Genetic engineering of various genes from the S/Se assimilation pathway has successfully enhanced plant Se tolerance, accumulation, and …

Aspects of Selenium Metabolism in Higher Plants, Annual ...

Aspects of Selenium Metabolism in Higher Plants Aspects of Selenium Metabolism in Higher Plants Shrift, A 1969-06-01 00:00:00 By Biology ALEX SHRIFT Department, State University of New York, Binghamton Selenium in soils is available to a limited number of unique plants which accumulate this comparatively rare element to levels highly toxic for livestock.Selenium in Plants - BiocyclopediaSelenium in Plants The question of whether or not selenium is a micronutrient for plants is still considered unresolved .Selenium has not been classified as an essential element for plants, but its role as a beneficial element in plants that are able to accumulate large amounts of it has been considered .Uptake and accumulation of selenium by plants is determined by the form and …

Selenium in higher plants: understanding mechanisms for ...

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 here, plant Se …SELENIUM: TOXICITY AND TOLERANCE IN HIGHER …Selenium‐tolerant accumulator plants differ in at least two respects from sensitive species. Large quantities of Se‐methylselenocysteine and selenocystathionine, two non‐protein selenoamino acids rarely detected in non‐accumulators, have been isolated from the tissues of …

Selenium in higher plants: understanding mechanisms for ...

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 a …SELENIUM IN HIGHER PLANTS - PubMedPlants vary considerably in their physiological response to selenium (Se). Some plant species growing on seleniferous soils are Se tolerant and accumulate very high concentrations of Se (Se accumulators), but most plants are Se nonaccumulators and are Se-sensitive. This review summarizes knowledge o …

VOLATILE SELENIUM IN HIGHER PLANTS

higher plants 1 10 15. Within the first two groups, the compound has been widely identified as dimethyl selenide. Identification of volatile selenium from higher plants, however, has been limited to one of several compounds produced by a selenium accumulator (Astragalus racemosus 22 25), namely, dimethyl diselenide 10. Dimethyl selenideSELENIUM: TOXICITY AND TOLERANCE IN HIGHER …1. Different plant species show considerable variation in their selenium content. Primary indicators, also termed selenium accumulators, many of which are members of the genus Astragalus, are highly tolerant of selenium; they are known to contain tissue levels of several thousand µg selenium/g.Secondary indicators, tolerant to low concentrations of the element, …

[PDF] Selenium Metabolism in Plants | Semantic Scholar

Selenium Metabolism in Plants. Selenium (Se) is an essential nutrient for many organisms, but also toxic at higher levels. While certain algae require Se to make selenoproteins, no such requirement has been shown for higher plants. Still, plants readily take up and assimilate Se using sulfur (S) transporters and biochemical pathways, and can ...Selenium and selenoproteins: it''s role in regulation of ...2019-7-6 · Selenium uptake and accumulation by plants. Selenium is one of the important elements needed for plant growth and development. The major physiological role of selenium in plant is to prevent oxidative stress, phytoremediation, biofortification, etc. Plants are classified into two major types based on the level of selenium accumulation.

Selenium in the Soil-Plant Environment: A Review ...

2017-1-12 · Selenium (Se) exhibits a "double-edged" behavior in animal and human nutrition. It is a micronutrient required in low concentrations by animals and humans, but toxic at high concentrations. Selenium deficiency has been associated with cancer and other health problems. Selenium requirements are commonly met through soils and plants such as wheat, rice, …Quick selenium accumulation in the ... - BMC Plant Biology2019-12-17 · The element selenium (Se) deficiency is thought to be a global human health problem, which could disperse by daily-supplement from Se-rich food. Increasing the accumulation of Se in rice grain is an approach matched to these nutrient demands. Nonetheless, Se is shown to be essential but also toxic to plants, with a narrow margin between deficiency …

Selenium in higher plants: understanding mechanisms for ...

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.(PDF) SELENIUM IN HIGHER PLANTS | Alice tarun - …Selenium shares many similar chemical properties with sulfur (S), although the P1: FJS/FGD P2: FLW April 7, 2000 13:56 Annual Reviews AR099-15 SELENIUM IN HIGHER PLANTS 403 Se atom is slightly larger; the radius of Se2+ is 0.5 A˚ whereas the radius of the ˚ Like S, Se can exist in five valence states, selenide (2−), elemental S2+ is 0.37 A ...

The Promotive Effect of Selenium on Plant Growth as ...

1999-7-1 · Selenium is known to be important in antioxidation in human and animals, but little attention has been paid to its role in higher plants. Chemically it is a photovoltaic element, and in order to study its effects on plants, ryegrass (Lolium perenne L.) and lettuce (Lactuca sativa L.) were cultivated in a pot experiment without or with H 2 SeO 4 (0.1 and 1.0 mg Se kg −1) under …Selenium and plants - uni-lj.si2009-9-8 · The essentiality of selenium to higher plants is still under debate (Terry et al., 2000). Selenium can increase the tolerance of plants to UV-induced oxidative stress, delay senescence, and promote the growth of ageing seedlings (Xue et al., 2001; Pennanen et al., 2002). Recently it has been shown that selenium has the ability to regulate the

Selenium Metabolism in Plants: Molecular Approaches

2018-9-25 · 9 Selenium Metabolism in Plants: Molecular Approaches Özgür Çak õr1, Neslihan Turgut-Kara 1* and û ule Ar õ1,2 1Department of Molecular Biology and Genetics, Faculty of Science Istanbul University, Istanbul 2Research and Application Center for Biotechnology and Genetic Engineering, Istanbul Turkey 1.Distribution of soil selenium in China is potentially ...2016-2-17 · Selenium (Se) is an essential micronutrient for humans 1,2, and most Se is primarily derived from cereals, including through secondary consumption as meat 1,2,3 general, the accumulation of Se ...

Plants | Special Issue : Selenium Metabolism and ...

2020-2-29 · Selenium can repel pests, reduce their growth, or cause toxic effects while having a positive effect on the growth of plants. In conclusion, accumulated selenium protects plants against aphids, weevils, cabbage loopers, cabbage …10 Nutritious Plant Foods Rich in Selenium - DietingWell2021-5-6 · Selenium is a trace mineral that the human body needs in tiny amounts. It is also an important antioxidant and an essential part of a healthy immune system. Fish and meat are great sources of the mineral, but there are many …

Effects of selenium hyperaccumulation on plant–plant ...

2011-3-4 · Plants can also volatilize Se, in the forms of dimethylselenide or dimethyldiselenide, which have a pungent odor that helps to identify Se-rich plants (Terry et al., 2000). Some plants even actively accumulate Se to concentrations between 0.1% and 1.5% of DW, typically 100-fold higher than other species growing on the same site (Beath et al ...Selenium and agricultural cropsHigher plants have different capacities to accumulate and tolerate selenium, referred to as accumulative and non-accumulative plants. Selenium-accumulators plants may contain hundreds of times more selenium than non-accumulators even when grown in the same soil, or can also grow in soils with low

SELENIUM IN HIGHER PLANTS

Plants vary considerably in their physiological response to selenium (Se). Some plant species growing on seleniferous soils are Se tolerant and accumulate very high concentrations of Se (Se accumulators), but most plants are Se nonaccumulators and are Se-sensitive.Selenium in higher plants: understanding mechanisms for ...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 here, plant Se …

SELENIUM IN HIGHER PLANTS | Annual Review of Plant …

2019-5-8 · Abstract Plants vary considerably in their physiological response to selenium (Se). Some plant species growing on seleniferous soils are Se tolerant and accumulate very high concentrations of Se (Se accumulators), but most plants are Se nonaccumulators and are Se-sensitive. This review summarizes knowledge of the physiology and biochemistry of both types …Selenium in higher plants: understanding mechanisms for ...2009-8-1 · Selenium in the environment. The metalloid selenium (Se) is ubiquitous in the environment, and its concentration in most soils ranges from 0.01 to 2.0 mg kg –1, with a mean of ∼0.4 mg kg –1; however, higher concentrations (>10 mg kg –1) can occur in seleniferous areas .Soil Se concentration and bioavailability vary with parent material and environmental …

VOLATILE SELENIUM IN HIGHER PLANTS

higher plants 1 10 15. Within the first two groups, the compound has been widely identified as dimethyl selenide. Identification of volatile selenium from higher plants, however, has been limited to one of several compounds produced by a selenium accumulator (Astragalus racemosus 22 25), namely, dimethyl diselenide 10. Dimethyl selenideSELENIUM: TOXICITY AND TOLERANCE IN HIGHER PLANTS ...Higher plants have different capacities to accumulate and tolerate selenium, referred to as accumulative and non-accumulative plants, and studies provide evidence on a beneficial role of Se in plants and for environmental phytoremediation, however more research is needed to consolidate the beneficial effects of Se.

Selenium in higher plants: understanding mechanisms for ...

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 here, plant Se …The Promotive Effect of Selenium on Plant Growth as ...1999-7-1 · Selenium is known to be important in antioxidation in human and animals, but little attention has been paid to its role in higher plants. Chemically it is a photovoltaic element, and in order to study its effects on plants, ryegrass (Lolium perenne L.) and lettuce (Lactuca sativa L.) were cultivated in a pot experiment without or with H 2 SeO 4 (0.1 and 1.0 mg Se kg −1) under …

SELENIUM IN HIGHER PLANTS | Annual Review of Plant …

2019-5-8 · Plants vary considerably in their physiological response to selenium (Se). Some plant species growing on seleniferous soils are Se tolerant and accumulate very high concentrations of Se (Se accumulators), but most plants are Se nonaccumulators and are Se-sensitive. This review summarizes knowledge of the physiology and biochemistry of both types of plants, particularly …Selenium in Higher Plants: Physiological Role, Antioxidant ...Selenium in Higher Plants: Physiological Role, Antioxidant Metabolism and Abiotic Stress Tolerance. Journal of Plant Sciences, 5: 354-375. Selenium (Se) is a non-metal, whose Greek name ( Selene) means moon. Selenium was first discovered by J.J. Berzelius in 1817.

Selenium and its Role in Higher Plants

Hartikainen H, Xue T, Piironen V (2000) Selenium as an anti-oxidant and pro-oxidant in ryegrass. Plant Soil 225:193–200 CrossRef Google Scholar. Hasanuzzaman M, Hossain MA, Fujita M (2010) Selenium in higher plants: physiological role, …Selenium in Higher Plants: Physiological Role, Antioxidant ...Selenium in Higher Plants: Physiological Role, Antioxidant Metabolism and Abiotic Stress Tolerance: Mirza Hasanuzzaman, M. Anwar Hossain and Masayuki Fujita: Abstract: It is now well established that virtually all abiotic and biotic stresses induce or involve oxidative stress to some degree and the ability of plants to control oxidant levels is highly correlated with stress tolerance.

SELENIUM IN HIGHER PLANTS | Annual Review of Plant …

2019-5-8 · Plants vary considerably in their physiological response to selenium (Se). Some plant species growing on seleniferous soils are Se tolerant and accumulate very high concentrations of Se (Se accumulators), but most plants are Se nonaccumulators and are Se-sensitive. This review summarizes knowledge of the physiology and biochemistry of both types of plants, particularly …Selenium in higher plants: understanding mechanisms for ...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.

Selenium in Soils and Plants

1985-2-18 · low-selenium concentrations in the plants)!n contrast, aerated, neutral-to-alkaline soils are unlikely to produce selenium-deficient plants. Selenium in Water Selenium occurs as a minor constituent in drinking water in a concentration range of 0.1 to 100 pig/L.'' Samples rarely exceed the 10 pig/L upper limit established by the UnitedUptake, Metabolism and Toxicity of Selenium in Tropical …2019-8-14 · Selenium is a mineral element that is essential for both animal and humans and can also serve as an environmental toxicant. A narrow margin exists between an ideal and toxic intake of selenium. It is a useful microelement …

The fascinating facets of plant selenium accumulation ...

2016-12-19 · Selenium partitioning across different plant organs is also different for hyperaccumulators: they have higher shoot : root Se ratios and higher source : sink Se ratios, suggesting enhanced Se translocation in xylem and phloem as …Effect of exogenous selenium supply on photosynthesis, …2017-2-7 · Cell membrane damage and antioxidant enzymes activity in response to selenium and NaCl. Salt-treated plants had significantly higher electrolyte leakage (1.9-fold) and lipid peroxidation (LPO ...

Selenium in Plants

2014-8-6 · Abstract. Selenium (Se) and sulfur (S) are chemically similar. Most plants cannot discriminate between the two, with the exception of Se hyperaccumulator species, which preferentially accumulate Se over S. Genetic engineering of various genes from the S/Se assimilation pathway has successfully enhanced plant Se tolerance, accumulation, and …10 Nutritious Plant Foods Rich in Selenium - DietingWell2021-5-6 · Selenium is a trace mineral that the human body needs in tiny amounts. It is also an important antioxidant and an essential part of a healthy immune system. Fish and meat are great sources of the mineral, but there are many …

(PDF) Selenium in Higher Plants

SELENIUM IN HIGHER PLANTS 411. Figure 3 Incorporation of selenide into SeCys, SeMet, and proteins. SeCys lyase is a. Se-specific enzyme, whereas …Selenium and its Role in Higher Plants - SpringerLinkHartikainen H, Xue T, Piironen V (2000) Selenium as an anti-oxidant and pro-oxidant in ryegrass. Plant Soil 225:193–200 CrossRef Google Scholar. Hasanuzzaman M, Hossain MA, Fujita M (2010) Selenium in higher plants: physiological role, …

Effects of selenium hyperaccumulation on plant–plant ...

2011-3-4 · Plants can also volatilize Se, in the forms of dimethylselenide or dimethyldiselenide, which have a pungent odor that helps to identify Se-rich plants (Terry et al., 2000). Some plants even actively accumulate Se to concentrations between 0.1% and 1.5% of DW, typically 100-fold higher than other species growing on the same site (Beath et al ...Selenium in Plants - BiocyclopediaSelenium in Plants The question of whether or not selenium is a micronutrient for plants is still considered unresolved .Selenium has not been classified as an essential element for plants, but its role as a beneficial element in plants that are able to accumulate large amounts of it has been considered .Uptake and accumulation of selenium by plants is determined by the form and …

Selenium in Plants – Homestead on the Range

2021-4-26 · In locations where the soil selenium levels are too high naturally, there is less that you can do. You may simply need to grow crops with a higher tolerance for selenium. Just be aware of the potential harmful effects that consuming plants grown on high-selenium soils may have on the health of the people and animals who consume the plants.[PDF] Selenium Metabolism in Plants | Semantic ScholarSelenium Metabolism in Plants. Selenium (Se) is an essential nutrient for many organisms, but also toxic at higher levels. While certain algae require Se to make selenoproteins, no such requirement has been shown for higher plants. Still, plants readily take up and assimilate Se using sulfur (S) transporters and biochemical pathways, and can ...