The aim of this review is to synthesize current knowledge of selenium (Se) transport and metabolism in plants, with a focus on implications for biofortification and phytoremediation. Research in the past decades has provided a wealth of knowledge regarding the mechanisms by which plants take up, metabolize, accumulate, and volatilize Se and the role plant-associated microbes play in these processes. Phytoremediation with different plant species, i.e., Brassica spp, is an alternative strategy for reducing soil Se concentrations to non-toxic levels. Karaj Dhillon. AU - Meharg, Andrew Alexander. The technology involves the use of plants in conjunction with microbial activity associated with the plants to extract, accumulate, and volatilize Se. Selenium Phytoremediation. A phytoremediation project may take several years to show results (Cunningham and Ow 1996). and El Mehdawi et al . Phytoremediation: Insuring Safe Selenium Levels Selenium is a naturally occurring element found in soil. A recent article in Rolling Stone magazine featured research by graduate student Gavin Stonehouse and Professor Lianne Pilon-Smits, and their work on phytoremediation of selenium by hemp (yes, we mean Cannabis sativa …)! To meet the current global food demand, particularly in depleted ecosystems under adverse climate conditions, the development of novel agronomical practices, which ensure crop productivity while safeguarding . It is one of the most (DMdSe), which are easily volatilized from both roots and used plants as a trace element bioaccumulator, especially aboveground plant parts as well as from bacteria and fungi via phytoremediation processes, due to its capacity of (Kabata-Pendias and Mukherjee 2007). (), Wu et al. Selenium phytoremediation is a green biotechnology to clean up Se-contaminated environments, primarily through phytoextraction and phytovolatilization. (2003) Selenium phytoremediation potential of Stanleya pinnata. Selenium is a necessary human micronutrient, and around a billion people worldwide may be Se deficient. Phytoremediation is a plant‐based technology that is being considered for managing Se in . cost effective methods phytoremediation has been selected as a remediation option. Selenium is a necessary human micronutrient, and around a billion people worldwide may be Se deficient. (2011a, b, 2012), El Mehdawi and Pilon-Smits (), Lindblom et al. A short summary of this paper. Selenium phytoremediation research featured in Rolling Stone magazine! Selenium phytoremediation potential of Stanleya pinnata David R. Parker1, Laura J. Feist, Tracey W. Varvel, David N. Thomason & Yiqiang Zhang . field phytoremediation of selenium (Se) may be harvested and utilized as Se-enriched forage for marginally Se-deficient lambs and cows. International Journal of Phytoremediation: Vol. It becomes a problem when irrigation practices cause it to leach out of the soils in the western states. in this regard, unique plants known as selenium hyperaccumulators, are of interest for the phytoremediation of se because they can hyper-accumulate se from soils with a se content ranging from 2 to. Selenium accumulated in plant tissues can . The efficiency of Se phytoremediation and biofortification may be further optimized. Phytoremediation, a plant based technology, is perceived as a novel, low-cost, eco-friendly technology for in-situ management of Se-contaminated soil and water resources. Overview and Prospects of Selenium Phytoremediation Approaches. and Trumble, J.T. Selenium biofortification is an agricultural process that increases the accumulation of Se in crops, through plant breeding, genetic engineering, or use of Se fertilizers. Phytoremediation by plants able to take up large amounts of Se is an important tool to combat pollution issues. Several transgenic approaches have been used successfully to further enhance plant selenium accumulation, tolerance, and volatilization: upregulation of genes involved in sulfur/selenium assimilation and volatilization . The selenium is deposited in the rivers, then accumulates until it reaches toxic levels. Selenium biofortification is an agricultural process that increases the accumulation of Se in crops, through plant breeding, genetic engineering, or use of Se fertilizers. Download Full PDF Package. PHYTOREMEDIATION AND BIOFORTIFICATION POTENTIAL OF CANNABIS SATIVA L. Selenium (Se) is a micronutrient, but toxic at high levels. Link/Page Citation Selenium (Se) occurs naturally in many agricultural soils on the west side of the San Joaquin Valley in central California as the result of weathering of Cretaceous shales and soils (McNeal and Balistrieri 1989). In this review, we discuss specific . After the discoveries at Kesterson were made, research into clean up procedures became a priority. Selenium biofortification is an agricultural process that increases the accumulation of Se in crops, through plant breeding, genetic engineering, or use of Se fertilizers. Once present in soils and waters at high concentrations, Se is very complicated and highly expensive to remove with conventional physical and chemical techniques. This paper. Citation in PubAg 29; Phytoremediation is a biological process where contaminants (such as excess selenium) are removed from soil and water by plants. Selenium in plant shoots and depletion of soil Se removal by selected plant species were evaluated over a 1-yr period under greenhouse conditions. Selenium is also a potential toxin at higher concentrations, and multiple environmental disasters over the past 50 years have been caused by Se pollution from agricultural and industrial sources. Dunn, J.W. Selenium is also a potential toxin at higher concentrations, and multiple environmental disasters over the past 50 years have been caused by Se pollution from agricultural and industrial sources. Canola (Brassica napus) grown as a selected plant species for field phytoremediation of selenium (Se) may be harvested and utilized as Se-enriched forage for marginally Se-deficient lambs and cows.Two field studies were conducted under controlled conditions to evaluate the accumulation of Se into different animal tissues, including blood, excreta, and milk. Vegetation management (phytoremediation) may be a strategy to reduce these soil Se concentrations to nontoxic levels. . Selenium accumulating or volatilizing plants may be used for phytoremediation of selenium pollution and as fortified foods. 2, pp. and Shannon, M.C. and Vickerman, D.B. The search been proposed as a solution wherein plants remove Se, for superior germplasm is ongoing, and the ideal plant However, the concentration of Se in plant foods varies between areas, and too much Se can lead to toxicity. In Study 1, Selenium toxicity is encountered in arid and semi‐arid regions of the world with alkaline, seleniferous soils derived from marine sediments. X-ray absorption spectroscopy study shows that the rapid selenium volatilizer, pickleweed (Salicornia bigelovii Torr.) For the foreseeable future, the innovation of this technology, combined with Edenspace Systems' existing intellectual prop-erty protection, should provide the company with an excellent competitive position. When this enzyme was overexpressed in the chlor- Selenium (Se) is an essential micronutrient for humans, animals and some lower plants at very low concentrations, whereas it is extremely toxic at higher doses. Hence, broccoli grown for phytoremediation of Se may be considered a source of supple- mental Se for animals or humans. Canola (Brassica napus) grown as a selected plant species for field phytoremediation of selenium (Se) may be harvested and utilized as Se-enriched forage for marginally Se-deficient lambs and cows. . Introduction The element selenium (Se), which is a necessary micronu-trient for humans and other vertebrates, is known to be toxic Plant Soil 249: 157-165 [Google Scholar] Pennanen A, Xue . Selenium phytoremediation is a green biotechnology to clean up Se-contaminated environments, primarily through phytoextraction and phytovolatilization. Phytoremediation and Selenium . Phytoremediation is a biological process where contaminants (such as excess selenium) are removed from soil and water by plants. To prevent Se toxicity due to excess environmental Se, plants may be used to phytoremediate Se from soil or water. Owing to the similarity of selenium to sulfur, plants readily take up and assimilate selenate via sulfur transporters and enzymes and can even volatilize selenium. Berken A, Mulholland MM, LeDuc DL, Terry N (2002) Genetic engineering of plants to enhance selenium phytoremediation. Phytoremediation of selenium laden soils: a new technology. Using a 60-day pot culture experiment, we investigated the effect of selenium on phytoremediation of soil containing high-level diesel by Alternanthera philoxeroides (alligator weed). Furthermore, living organisms become. A locked padlock) or https:// means you've safely connected to the .gov website. Edenspace Systems is marketing the arsenic extract-ing fern under the trade name edenfern™. The key research and practical challenges that remain in improving biofortification and phytoremediation of Se have been highlighted, and the future development and uses of Se-biofortified agricultural products in China has also been discussed. Two field studies were conducted under controlled conditions to evaluate the accumulation of Se into different animal tissues, including blood . Share sensitive information only on official, secure websites. Phytoremediation has (Terry et al., 1992; Zayed & Terry, 1994). Phytoremediation is a plant based technology, in which toxic metals are removed from the soil by the roots of the plant. Two field studies were conducted under controlled conditions to evaluate the accumulation of Se into different animal tissues, including blood, excreta, and milk. Selenium phytoremediation is a green biotechnology to clean up Se-contaminated environments, primarily through phytoextraction and phytovolatilization. Phytoremediation is a plant-based technology that is being considered for managing Se in central California soils. Progress 01/01/05 to 12/31/05 Outputs The Terry lab uses a multi-disciplinary approach to develop more efficient bioremediation technology for the clean up of selenium (Se) and other trace elements from agricultural and industrial wastewater. phytoremediation likely have less need for pesticides. Phytotechnologies using plants and their associated microbes can address both of these problems. Phytoremediation, the use of plants for environmental cleanup, has been proposed as a cost-effective and environmentally friendly approach for managing Se-contaminated soil and agricultural drainage water (Salt et al., 1995; Zhu et al., 2009). Plants remove Se by uptake and accumulation in their tissues and by volatilization into the atmosphere. The potential of two plant species, Phragmites australis (common reed) and Typha latifolia (cattail), in the phytoremediation process of selenium (Se) was studied in subsurface-flow constructed wetland (SSF). 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