Metabolism Plants Selenium

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Selenium metabolism in plants - ScienceDirect

01-11-2018· Primary metabolism of selenium in plants – The biosynthesis of SeCys and SeMet. Current understanding of Se metabolism in angiosperms is largely founded on knowledge of the analogous S metabolism [13,14,22,39,40,45,84].

Selenium metabolism in plants - ScienceDirect

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.

Selenium Metabolism in Plants - Biology

Selenium Metabolism in Plants Elizabeth A.H. Pilon-Smits and Colin F. Quinn Abstract 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 …

Selenium Metabolism in Plants: Molecular Approaches

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.

Selenium Metabolism in Plants - Biology

Selenium Metabolism in Plants Elizabeth A.H. Pilon-Smits and Colin F. Quinn Abstract 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 …

Selenium metabolism in plants - ScienceDirect

01-11-2018· Primary metabolism of selenium in plants – The biosynthesis of SeCys and SeMet. Current understanding of Se metabolism in angiosperms is largely founded on knowledge of the analogous S metabolism [13,14,22,39,40,45,84].

Understanding selenium metabolism in plants and its role ...

Understanding selenium metabolism in plants and its role as a beneficial element Reshu Chauhana†, Surabhi Awasthia†, Sudhakar Srivastavab, Sanjay Dwivedia, Elizabeth A. H. Pilon-Smitsc, Om P. Dhankherd, and Rudra D. Tripathia aCSIR-National Botanical Research Institute, Council of Scientific and Industrial Research, Lucknow, India; bInstitute of Environment and Sustainable Development ...

Selenium in Plants - Biocyclopedia

Selenium 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 concentration ...

Plants | Special Issue : Selenium Metabolism and ...

Selenium (Se) is an essential micronutrient for human health, entering the diet mainly through the consumption of plant material. Members of the Brassicaceae are Se-accumulators that can accumulate up to 1g Se kg −1 dry weight (DW) from the environment without apparent ill effect. The Brassicaceae also produce glucosinolates (GSLs), sulfur (S)-rich compounds that benefit human health.

An Overview of Selenium Uptake, Metabolism, and Toxicity ...

metabolism inside the plants is necessary for designing effective Se phytoremediation and biofortification strategies. Keywords: selenium, toxicity, sulfate transporters, phytoremediation, biofortification, oxidative stress. INTRODUCTION. The breakthrough in selenium (Se) research came into existence in 1957, when Schwartz and

Biochemistry of Plant Selenium Uptake and Metabolism ...

Anderson JW, Mcmahon PJ (2001) The role of glutathione in the uptake and metabolism of sulfur and selenium. In: Grill D, Tausz MM, de Kok LJ (eds) Significance of glutathione to plant adaptation to the environment, Plant ecophysiology, vol 2.

Selenium accumulation by plants | Annals of Botany ...

SELENIUM UPTAKE, TRANSLOCATION AND METABOLISM IN PLANTS. Plant roots can take up Se as selenate (SeO 4 2–), selenite (SeO 3 2–; HSeO 3 –; H 2 SeO 3) or organoselenium compounds, such as selenocysteine (SeCys) and selenomethionine (SeMet), but are unable to take up colloidal elemental Se or metal selenides (White and Broadley, 2009).

Plants, selenium and human health.

Selenium-accumulating plants provide unique tools to help us understand selenium metabolism. They are also a source of genetic material that can be used to alter selenium metabolism and tolerance to help develop food crops that have enhanced levels of anticarcinogenic selenium compounds, as well as plants that are ideally suited for the phytoremediation of selenium-contaminated soils.

Selenium metabolism, selenoproteins and mechanisms of ...

Overview of selenium metabolism. The metabolism of selenium is dynamic and can be likened to in vivo combinatorial chemistry, in the sense that a wide array of products are formed (7, 8). Animals synthesize many different intermediary metabolites in the course of converting inorganic Se to organic forms and vice versa.

Plants, selenium and human health.

Selenium-accumulating plants provide unique tools to help us understand selenium metabolism. They are also a source of genetic material that can be used to alter selenium metabolism and tolerance to help develop food crops that have enhanced levels of anticarcinogenic selenium compounds, as well as plants that are ideally suited for the phytoremediation of selenium-contaminated soils.

Selenium Metabolism in Plants | Semantic Scholar

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 also volatilize methylated 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 uptake and metabolism ...

Uptake, Metabolism and Toxicity of Selenium in Tropical …

Selenium toxicity or Selenosis can occur when the optimal concentration of selenium is exceeded. Two major mechanism of selenium toxicity exists; either by induction of oxidative stress or malformation of selenoproteins. Selenium uptake, metabolism and toxicity in tropical plants …

[PDF] Selenium Metabolism in Plants: Molecular …

Selenium (Se) is placed in Group VIA of the Periodic Table. Its chemistry is similar to sulfur (S). Practically all small organic selenium compounds are isologues of corresponding sulfur compounds. With a few exceptions, they are also isologues of sulfur amino acids or derivatives thereof. Selenium plays an indispensable role for humans, animals and microorganisms.

METABOLISM OF SELENIUM AND SULFUR IN PLANTS. …

OSTI.GOV Technical Report: METABOLISM OF SELENIUM AND SULFUR IN PLANTS. Final Report, July 1, 1950- October 31, 1960

Uptake, Metabolism, and Volatilization of Selenium by ...

Selenium is biologically important because (i) it is essential in animal and possi- bly plant metabolism, (ii) in many areas diets do not contain sufficient Se to meet, animals' needs, and (iii ...

SELENIUM IN HIGHER PLANTS | Annual Review of Plant …

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 with regard to Se uptake ...

Selenium metabolism, selenoproteins and mechanisms of ...

Overview of selenium metabolism. The metabolism of selenium is dynamic and can be likened to in vivo combinatorial chemistry, in the sense that a wide array of products are formed (7, 8). Animals synthesize many different intermediary metabolites in the course of converting inorganic Se to organic forms and vice versa.

Phenotypical, physiological and biochemical analyses ...

The present study investigated the phenotypical, physiological and biochemical changes of rice plants exposed to high selenium (Se) concentrations to gain an insight into Se-induced phytotoxicity. Results showed that exposure of rice plants to excessive Se resulted in growth retardation and biomass reduction in connection with the decreased levels of chlorophyll, carotenoids and soluble proteins.