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Al Mamun A, Rahman MM, Huq MA, Rahman MM, Rana MR, Rahman ST, Khatun ML, Alam MK. Phytoremediation: a transgenic perspective in omics era. Transgenic Res 2024; 33:175-194. [PMID: 38922381 DOI: 10.1007/s11248-024-00393-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 06/17/2024] [Indexed: 06/27/2024]
Abstract
Phytoremediation is an environmental safety strategy that might serve as a viable preventative approach to reduce soil contamination in a cost-effective manner. Using plants to remediate pollution from the environment is referred to as phytoremediation. In the past few decades, plants have undergone genetic manipulation to overcome inherent limitations by using genetically modified plants. This review illustrates the eco-friendly process of cleaning the environment using transgenic strategies combined with omics technologies. Herbicides tolerance and phytoremediation abilities have been established in genetically modified plants. Transgenic plants have eliminated the pesticides atrazine and metolachlor from the soil. To expand the application of genetically engineered plants for phytoremediation process, it is essential to test strategies in the field and have contingency planning. Omics techniques were used for understanding various genetic, hormonal, and metabolic pathways responsible for phytoremediation in soil. Transcriptomics and metabolomics provide useful information as resources to understand the mechanisms behind phytoremediation. This review aims to highlight the integration of transgenic strategies and omics technologies to enhance phytoremediation efficiency, emphasizing the need for field testing and comprehensive planning for successful implementation.
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Affiliation(s)
- Abdullah Al Mamun
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - M Mizanur Rahman
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh.
| | - Md Amdadul Huq
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea
| | - Md Mashiar Rahman
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Md Rasel Rana
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Shabiha Tasbir Rahman
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Mst Lata Khatun
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Md Khasrul Alam
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
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Liu Y, Ma J, Li F, Zeng X, Wu Z, Huang Y, Xue Y, Wang Y. High Concentrations of Se Inhibited the Growth of Rice Seedlings. PLANTS (BASEL, SWITZERLAND) 2024; 13:1580. [PMID: 38891388 PMCID: PMC11174541 DOI: 10.3390/plants13111580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 06/21/2024]
Abstract
Selenium (Se) is crucial for both plants and humans, with plants acting as the main source for human Se intake. In plants, moderate Se enhances growth and increases stress resistance, whereas excessive Se leads to toxicity. The physiological mechanisms by which Se influences rice seedlings' growth are poorly understood and require additional research. In order to study the effects of selenium stress on rice seedlings, plant phenotype analysis, root scanning, metal ion content determination, physiological response index determination, hormone level determination, quantitative PCR (qPCR), and other methods were used. Our findings indicated that sodium selenite had dual effects on rice seedling growth under hydroponic conditions. At low concentrations, Se treatment promotes rice seedling growth by enhancing biomass, root length, and antioxidant capacity. Conversely, high concentrations of sodium selenite impair and damage rice, as evidenced by leaf yellowing, reduced chlorophyll content, decreased biomass, and stunted growth. Elevated Se levels also significantly affect antioxidase activities and the levels of proline, malondialdehyde, metal ions, and various phytohormones and selenium metabolism, ion transport, and antioxidant genes in rice. The adverse effects of high Se concentrations may directly disrupt protein synthesis or indirectly induce oxidative stress by altering the absorption and synthesis of other compounds. This study aims to elucidate the physiological responses of rice to Se toxicity stress and lay the groundwork for the development of Se-enriched rice varieties.
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Affiliation(s)
| | | | | | | | | | | | | | - Yanyan Wang
- Department of Agronomy, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (Y.L.)
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Kong W, Huo R, Lu Y, Fan Z, Yue R, Ren A, Li L, Ding P, Ren Y, Gao Z, Sun M. Nitrogen Application Can Optimize Form of Selenium in Soil in Selenium-Rich Areas to Affect Selenium Absorption and Accumulation in Black Wheat. PLANTS (BASEL, SWITZERLAND) 2023; 12:4160. [PMID: 38140488 PMCID: PMC10747177 DOI: 10.3390/plants12244160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/09/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
The composition and form of selenium in the soil have significant effects on the selenium content of crops. In this study, we investigated the selenium absorption pathway in plants by studying the interaction between nitrogen fertilizer and soil selenium. Our results showed that the selenium concentration enrichment factors (CEF) varied within the same region due to nitrogen fertilizer application, where they ranged from 1.33 to 5.02. The soil selenium flow coefficient (mobility factor, MF) increased with higher nitrogen application rates. The sum of the MF values for each soil layer treated with nitrogen application rates of 192 kg hm-2 and 240 kg hm-2 was 0.70, which was 64% higher than that for the control group with no nitrogen application. In the 0-20 cm soil layer, the highest summed water-soluble and exchangeable selenium and relative percentage of total selenium (12.45%) was observed at a nitrogen application rate of 240 kg hm-2. In the 20-40 cm soil layer, the highest relative percentage content of water-soluble and exchangeable selenium and total selenium (12.66%) was observed at a nitrogen application rate of 192 kg hm-2. Experimental treatment of black wheat with various concentrations of sodium selenite showed that selenium treatment at 50 μmol L-1 significantly increased the reduced glutathione (GSH) levels in the leaves and roots of seedlings, where the GSH contents increased by 155.4% in the leaves and by 91.5% in the roots. Further analysis of the soil-black wheat system showed that nitrogen application in selenium-rich areas affected the soil selenium flow coefficient and morphological composition, thereby changing the enrichment coefficient for leaves (0.823), transport capacity from leaves to grains (-0.530), and enrichment coefficient for roots (0.38). These changes ultimately affected the selenium concentration in the grains of black wheat.
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Affiliation(s)
- Weilin Kong
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Ruiwen Huo
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Yu Lu
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Zhenjie Fan
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Runqing Yue
- Yangquan Agricultural Technical Service Center, Yangquan 045000, China
| | - Aixia Ren
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Linghong Li
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Pengcheng Ding
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Yongkang Ren
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Zhiqiang Gao
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
| | - Min Sun
- College of Agriculture, Shanxi Agriculture University, Taigu, Jinzhong 030801, China
- Collaborative Innovation Center for High-Quality and Efficient Production of Characteristic Crops on the Loess Plateau Jointly Built by Provinces and Ministries, Taigu, Jinzhong 030801, China
- Key Laboratory of Functional Agriculture of Ministry of Agriculture and Rural Affairs, Taigu, Jinzhong 030801, China
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van der Ent A, Salinitro M, Brueckner D, Spiers KM, Montanari S, Tassoni A, Schiavon M. Differences and similarities in selenium biopathways in Astragalus, Neptunia (Fabaceae) and Stanleya (Brassicaceae) hyperaccumulators. ANNALS OF BOTANY 2023; 132:349-361. [PMID: 37602676 PMCID: PMC10583200 DOI: 10.1093/aob/mcad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
BACKGROUND AND AIMS Selenium hyperaccumulator species are of primary interest for studying the evolution of hyperaccumulation and for use in biofortification because selenium is an essential element in human nutrition. In this study, we aimed to determine whether the distributions of selenium in the three most studied hyperaccumulating taxa (Astragalus bisulcatus, Stanleya pinnata and Neptunia amplexicaulis) are similar or contrasting, in order to infer the underlying physiological mechanisms. METHODS This study used synchrotron-based micro-X-ray fluorescence (µXRF) techniques to visualize the distribution of selenium and other elements in fresh hydrated plant tissues of A. racemosus, S. pinnata and N. amplexicaulis. KEY RESULTS Selenium distribution differed widely in the three species: in the leaves of A. racemosus and N. amplexicaulis selenium was mainly concentrated in the pulvini, whereas in S. pinnata it was primarilylocalized in the leaf margins. In the roots and stems of all three species, selenium was absent in xylem cells, whereas it was particularly concentrated in the pith rays of S. pinnata and in the phloem cells of A. racemosus and N. amplexicaulis. CONCLUSIONS This study shows that Astragalus, Stanleya and Neptunia have different selenium-handling physiologies, with different mechanisms for translocation and storage of excess selenium. Important dissimilarities among the three analysed species suggest that selenium hyperaccumulation has probably evolved multiple times over under similar environmental pressures in the US and Australia.
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Affiliation(s)
- Antony van der Ent
- Laboratory of Genetics, Wageningen University and Research, Wageningen, The Netherlands
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland, Australia
- Université de Lorraine, INRAE, LSE, F-54000 Nancy, France
| | - Mirko Salinitro
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | | | | | - Sofia Montanari
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Annalisa Tassoni
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Michela Schiavon
- Department of Agricultural, Forest and Food Sciences (DISAFA), University of Turin, Turin, Italy
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Montanari S, Salinitro M, Simoni A, Ciavatta C, Tassoni A. Foraging for selenium: a comparison between hyperaccumulator and non-accumulator plant species. Sci Rep 2023; 13:10661. [PMID: 37391494 PMCID: PMC10313833 DOI: 10.1038/s41598-023-37249-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/19/2023] [Indexed: 07/02/2023] Open
Abstract
Selenium (Se) hyperaccumulators are a unique group of plants that can accumulate this element in their aerial parts at concentrations exceeding 100 mg kgDW-1. These plants actively search for Se in the soil, a phenomenon known as root foraging, reported to date only by few studies. In this study, the effect of localized Se enrichment, in the form of selenite and selenate, was investigated on the root architecture of two Se-hyperaccumulators (Stanleya pinnata and Astragalus bisulcatus) and two non-accumulators (Brassica juncea and Medicago sativa). Rhizoboxes were divided into two halves: one half was filled with control soil while the other with selenate or selenite (30 mg kgDW-1) spiked soil. Seedling were transferred into the interface of the two soils and allowed to grow for three weeks under controlled light and temperature conditions. Staneya pinnata exhibited equal root density in both halves of the rhizobox when grown in control/control and selenite/control soil treatments. However, in the presence of selenate, S. pinnata developed 76% of the roots towards the selenate-enriched half, indicating an active root foraging. In contrast, A. bisulcatus and the non-accumulators B. juncea and M. sativa did not show any preferential distribution of roots. This study revealed that only S. pinnata showed the ability to detect and forage for Se when provided as selenate. Non-accumulators did not show any morphological or Se-accumulation difference associated with the presence of Se in soil in either form.
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Affiliation(s)
- Sofia Montanari
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126, Bologna, Italy
| | - Mirko Salinitro
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126, Bologna, Italy.
| | - Andrea Simoni
- Department of Agricultural and Food Sciences, University of Bologna, Viale Giuseppe Fanin 40, 40127, Bologna, Italy
| | - Claudio Ciavatta
- Department of Agricultural and Food Sciences, University of Bologna, Viale Giuseppe Fanin 40, 40127, Bologna, Italy
- Centro Interdipartimentale di Ricerca Industriale sull'Agroalimentare, University of Bologna, Via Quinto Bucci 336, 47521, Cesena, Italy
| | - Annalisa Tassoni
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126, Bologna, Italy
- Centro Interdipartimentale di Ricerca Industriale sull'Agroalimentare, University of Bologna, Via Quinto Bucci 336, 47521, Cesena, Italy
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Gui JY, Rao S, Huang X, Liu X, Cheng S, Xu F. Interaction between selenium and essential micronutrient elements in plants: A systematic review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 853:158673. [PMID: 36096215 DOI: 10.1016/j.scitotenv.2022.158673] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
Nutrient imbalance (i.e., deficiency and toxicity) of microelements is an outstanding environmental issue that influences each aspect of ecosystems. Although the crucial roles of microelements in entire lifecycle of plants have been widely acknowledged, the effective control of microelements is still neglected due to the narrow safe margins. Selenium (Se) is an essential element for humans and animals. Although it is not believed to be indispensable for plants, many literatures have reported the significance of Se in terms of the uptake, accumulation, and detoxification of essential microelements in plants. However, most papers only concerned on the antagonistic effect of Se on metal elements in plants and ignored the underlying mechanisms. There is still a lack of systematic review articles to summarize the comprehensive knowledge on the connections between Se and microelements in plants. In this review, we conclude the bidirectional effects of Se on micronutrients in plants, including iron, zinc, copper, manganese, nickel, molybdenum, sodium, chlorine, and boron. The regulatory mechanisms of Se on these micronutrients are also analyzed. Moreover, we further emphasize the role of Se in alleviating element toxicity and adjusting the concentration of micronutrients in plants by altering the soil conditions (e.g., adsorption, pH, and organic matter), promoting microbial activity, participating in vital physiological and metabolic processes, generating element competition, stimulating metal chelation, organelle compartmentalization, and sequestration, improving the antioxidant defense system, and controlling related genes involved in transportation and tolerance. Based on the current understanding of the interaction between Se and these essential elements, future directions for research are suggested.
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Affiliation(s)
- Jia-Ying Gui
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Shen Rao
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Xinru Huang
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
| | - Xiaomeng Liu
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Shuiyuan Cheng
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Feng Xu
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
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Chen Q, Yu L, Chao W, Xiang J, Yang X, Ye J, Liao X, Zhou X, Rao S, Cheng S, Cong X, Xiao B, Xu F. Comparative physiological and transcriptome analysis reveals the potential mechanism of selenium accumulation and tolerance to selenate toxicity of Broussonetia papyrifera. TREE PHYSIOLOGY 2022; 42:2578-2595. [PMID: 35899437 DOI: 10.1093/treephys/tpac095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Broussonetia papyrifera is an important fodder tree that is widely distributed in China. Enhancing the selenium (Se) content in B. papyrifera may help to improve the nutritional value of the feed. In this study, sodium selenite and selenate were foliar applied to investigate the mechanisms of Se tolerance and accumulation in B. papyrifera. The results showed that both Se forms significantly increased the total Se content, and the proportion of organic Se was significantly higher in the sodium selenite treatment than in the control. In addition, the soluble sugar, phenolic acid and flavonoid contents and antioxidant enzyme activities were increased by exogenous Se. The de novo RNA sequencing results showed that 644 and 1804 differentially expressed genes were identified in the selenite and selenate comparison groups, respectively. Pathway enrichment analysis demonstrated that 24 of the 108 pathways were significantly enriched, of which sulfur assimilation genes in the sodium selenite-treated groups were upregulated, whereas Se conjugation and transporter genes, such as SBP1, PCS, GSTs, ABCs and GPX, were significantly induced under selenate treatment. The hub genes identified by weighted-gene co-expression network analysis further confirmed that sulfur assimilation, conjugation and transporter genes might play a vital role in Se assimilation and tolerance. From this, a model of Se metabolism in B. papyrifera was proposed based on the above physiological and RNA sequencing data. This study is the first study to report that B. papyrifera has a strong ability to accumulate and tolerate exogenous Se, thereby providing a foundation for further characterization of the accumulation and tolerance mechanism of B. papyrifera. Our findings can provide technical support for producing Se-enriched fodder.
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Affiliation(s)
- Qiangwen Chen
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Li Yu
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Wei Chao
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Juan Xiang
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Xiaoyan Yang
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Jiabao Ye
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Xiaoli Liao
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Xian Zhou
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Shen Rao
- National R&D Center for Se-rich Agricultural Products Processing, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
- School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
| | - Shuiyuan Cheng
- National R&D Center for Se-rich Agricultural Products Processing, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
- National Selenium Rich Product Quality Supervision and Inspection Center, Enshi 445000, Hubei, China
| | - Xin Cong
- National R&D Center for Se-rich Agricultural Products Processing, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
- Enshi Se-Run Material Engineering Technology Co., Ltd, Enshi, 445000, China
| | - Bo Xiao
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
| | - Feng Xu
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, China
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Chen H, Cheng Q, Chen Q, Ye X, Qu Y, Song W, Fahad S, Gao J, Saud S, Xu Y, Shen Y. Effects of Selenium on Growth and Selenium Content Distribution of Virus-Free Sweet Potato Seedlings in Water Culture. FRONTIERS IN PLANT SCIENCE 2022; 13:965649. [PMID: 35874011 PMCID: PMC9298572 DOI: 10.3389/fpls.2022.965649] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Understanding the selenium tolerance of different sweet potato [Dioscorea esculenta (Lour.) Burkill] is essential for simultaneously for breeding of new selenium-tolerant varieties and improving the selenium content in sweet potato. Therefore, a greenhouse experiment was conducted from February to April 2022 to evaluate the effect of sweet potato cultivars and selenium (Na2SeO3) concentrations (0-40 mg/L) on plant growth, physiological activities and plant selenium content distribution. The results showed that when the selenium concentration was more than 3 mg/L, the plant growth was significantly affected and the plant height and root length were significantly different compared to the control. While the selenium concentration was 20 and 40 mg/L had the greatest effect on plant growth when the number of internodes and leaves of the plant decreased, the root system stopped growing and the number of internodes of the plant, the number of leaves and the dry-to-fresh weight ratio of the plant a very significant level compared to reached control. The relative amount of chlorophyll in leaves under treatment with a selenium concentration of 1 mg/L was increased, and the relative amount of chlorophyll in 3 mg/L leaves gradually increased with the increase in the selenium concentration. The values of the maximum photochemical efficiency PSII (fv/fm) and the potential activity of PSII (fv/fo) compared to the control under treatment with 40 mg/L selenium concentration and photosynthesis of plants was inhibited. The selenium content in root, stem and leaf increased with the increase in selenium concentration, and the distribution of selenium content in the plant was leaf <stem <root, and the selenium content in root was significantly higher than that in stem and leaf. In summary, the appropriate concentration of selenium tolerance has been determined to be 3 mg/L. The aquatic culture identification method of selenium tolerance of sweet potatoes and growth indices of various selenium tolerant varieties (lines) established in this study will provide a technical basis for selenium tolerant cultivation and mechanism research.
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Affiliation(s)
- Huoyun Chen
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
- Enshi Comprehensive Test Station of Sweet Potato Industry Technology System, Enshi, China
| | - Qun Cheng
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
- Enshi Comprehensive Test Station of Sweet Potato Industry Technology System, Enshi, China
| | - Qiaoling Chen
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
- Enshi Comprehensive Test Station of Sweet Potato Industry Technology System, Enshi, China
| | - Xingzhi Ye
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
- Enshi Comprehensive Test Station of Sweet Potato Industry Technology System, Enshi, China
| | - Yong Qu
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Enshi Comprehensive Test Station of Sweet Potato Industry Technology System, Enshi, China
| | - Weiwu Song
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
| | - Shah Fahad
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops, Hainan University, Haikou, China
- Department of Agronomy, Faculty of Agricultural Sciences, The University of Haripur, Haripur, Pakistan
| | - Jianhua Gao
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
| | - Shah Saud
- College of Life Science, Linyi University, Linyi, China
| | - Yi Xu
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
- Enshi Comprehensive Test Station of Sweet Potato Industry Technology System, Enshi, China
| | - Yanfen Shen
- Academy of Agricultural Sciences, Enshi Tujia and Miao Autonomous Prefecture, Enshi, China
- Hubei Enshi South China Potato Research Center, Enshi, China
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Rao S, Gou Y, Yu T, Cong X, Gui J, Zhu Z, Zhang W, Liao Y, Ye J, Cheng S, Xu F. Effects of selenate on Se, flavonoid, and glucosinolate in broccoli florets by combined transcriptome and metabolome analyses. Food Res Int 2021; 146:110463. [PMID: 34119247 DOI: 10.1016/j.foodres.2021.110463] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/13/2021] [Accepted: 05/27/2021] [Indexed: 11/17/2022]
Abstract
Broccoli is a nutritious vegetable popular all over the world. This study investigated the effects of different concentrations of selenate (0, 0.1, 0.2, 0.4, 0.8, and 1.6 mmol/L) on the selenium (Se), glucosinolate, and flavonoid contents of broccoli florets. Results showed that the total Se, selenomethionine, and methyl selenocysteine contents increased following selenate dosage. Interestingly, selenate treatment of 0.4 mmol/L decreased the flavonoid but increased the glucosinolate content. Metabolome analysis revealed changes in the individual contents of glucosinolates and flavonoids. Conjoint analysis of transcriptome and metabolome showed that the glucosinolate and flavonoid compounds were potentially regulated by two sulfate transporter genes (Sultr3;1 and Sultr4;2) and several cytochrome P450 genes (e.g., CYP71B21, CYP72C1, and CYP81F1). These new findings indicated that Se treatment may influence glucosinolate and flavonoid accumulation by regulating the expression of these genes. The results of this study provide some novel insights into the effects of Se on glucosinolates and flavonoids in broccoli florets and deepen our understanding of the regulatory network between some specific genes and these compounds.
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Affiliation(s)
- Shen Rao
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Yuanyuan Gou
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Tian Yu
- National R&D for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China; Enshi Se-Run Health Tech Development Co. Ltd., Enshi 445000, China.
| | - Xin Cong
- National R&D for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China; Enshi Se-Run Health Tech Development Co. Ltd., Enshi 445000, China.
| | - Jiaying Gui
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Zhenzhou Zhu
- National R&D for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Weiwei Zhang
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Yongling Liao
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Jiabao Ye
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
| | - Shuiyuan Cheng
- National R&D for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan 430023, China; National Selenium Rich Product Quality Supervision and Inspection Center, Enshi 445000, Hubei, China.
| | - Feng Xu
- College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China.
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10
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Raina M, Sharma A, Nazir M, Kumari P, Rustagi A, Hami A, Bhau BS, Zargar SM, Kumar D. Exploring the new dimensions of selenium research to understand the underlying mechanism of its uptake, translocation, and accumulation. PHYSIOLOGIA PLANTARUM 2021; 171:882-895. [PMID: 33179766 DOI: 10.1111/ppl.13275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
Selenium (Se) is a vital mineral for both plants and animals. It is widely distributed on the earth's crust and is taken up by the plants as selenite or selenate. Plants substantially vary in their physiological response to Se. The amount of Se in edible plants is genetically controlled. Its availability can be determined by measuring its phytoavailability in soil. The low concentration of Se in plants can help them in combating stress, whereas higher concentrations can be detrimental to plant health and in most cases it is toxic. Thus, solving the double-edged sword problem of nutritional Se deficiency and its elevated concentrations in environment requires a better understanding of Se uptake and metabolism in plants. The studies on Se uptake and metabolism can help in genetic biofortification of Se in plants and also assist in phytoremediation. Moreover, Se uptake and transport, especially biochemical pathways of assimilation and incorporation into proteins, offers striking mechanisms of toxicity and tolerance. These developments have led to a revival of Se research in higher plants with significant break throughs being made in the previous years. This review explores the new dimensions of Se research with major emphasis on key research events related to Se undertaken in last few years. Further, we also discussed future possibilities in Se research for crop improvement.
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Affiliation(s)
- Meenakshi Raina
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Jammu and Kashmir, India
| | - Akanksha Sharma
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Jammu and Kashmir, India
| | - Muslima Nazir
- Center of Research for Development (CORD), University of Kashmir, Srinagar, Jammu & Kashmir, India
| | - Punam Kumari
- Department of Biosciences and Biotechnology, Fakir Mohan University, Balasore, Odisha, India
| | - Anjana Rustagi
- Department of Botany, Gargi College, University of Delhi, New Delhi, India
| | - Ammarah Hami
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Jammu and Kashmir, India
| | - Brijmohan Singh Bhau
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Jammu and Kashmir, India
| | - Sajad Majeed Zargar
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Jammu and Kashmir, India
| | - Deepak Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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11
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Yang C, Yao H, Wu Y, Sun G, Yang W, Li Z, Shang L. Status and risks of selenium deficiency in a traditional selenium-deficient area in Northeast China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 762:144103. [PMID: 33360462 DOI: 10.1016/j.scitotenv.2020.144103] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/20/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
In agricultural lands with selenium (Se) deficiency, bioavailability of Se in plants is low. Residents from large-scale agricultural production areas with Se deficiency often suffer from endemic diseases because of consumption of agricultural products lacking in Se. One such area in Northeast China where Keshan disease and Kashin-Beck disease originated, was selected for investigating the geochemistry, influencing factors, and risks of Se in the agroecosystems. Analysis of field samples indicates that the Se deficiency in soil is significantly reduced compared with that of several decades ago, and 62.6% of soils are now Se-sufficient in the southern Songnen Plain. However, Se in crop products remains low due to weak soil-plant transfer, resulting in high risks of Se deficiency related diseases in the rural population of this area. Structural equation modeling, principal component analysis, and other statistical analyses revealed that climate conditions and soil physical and chemical properties are the key factors influencing the spatial distribution of soil Se. Extensive use of agricultural fertilizers may indirectly inhibit the migration of Se from soil to plants. Ensuring sufficient Se contents in agricultural products to meet the minimum daily requirements of residents remains a challenge in Se-deficient areas, especially in the increased agricultural production environment in China.
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Affiliation(s)
- Chenmeng Yang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Heng Yao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Yunjie Wu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
| | - Guangyi Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; Heilongjiang Institute of Geological Survey, Harbin 150036, China.
| | - Wen Yang
- Heilongjiang Institute of Geological Survey, Harbin 150036, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Zhonggen Li
- College of Resources and Environment, Zunyi Normal University, Zunyi 563006, China
| | - Lihai Shang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
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12
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Favorito JE, Grossl PR, Davis TZ, Eick MJ, Hankes N. Soil-plant-animal relationships and geochemistry of selenium in the Western Phosphate Resource Area (United States): A review. CHEMOSPHERE 2021; 266:128959. [PMID: 33279237 DOI: 10.1016/j.chemosphere.2020.128959] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 11/06/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
While naturally found in trace quantities, several regions throughout the world have been designated as "seleniferous" or containing an overabundance of the trace element, selenium (Se), in soil. In particular, portions of the Western Phosphate Resource Area (WPRA) of the United States are considered seleniferous, notably due to past phosphate mining reclamation practices that have promoted Se release and accumulation in soil from weathering overburden waste rock. Concern over Se soil contamination in this region has been attributed to its high levels (ranging from 2.7 to 435 mg Se kg-1 soil), bioavailability, and subsequent hyperaccumulation in vegetation at toxic concentrations (exceeding 10,000 mg Se kg-1 plant tissue). The Se hyperaccumulator, western aster (Symphyotrichum ascendens (Lindl.)), is responsible for the vast majority of acute selenium livestock poisonings and fatalities throughout the region. This inherent bioavailability is largely controlled by soil redox chemistry and sorptive processes. The purpose of this review is to integrate information related to the unique site history of the WPRA from onset mining to current Se problems. This review will provide current details and connection of WPRA mining geology, soil Se geochemistry, plant hyperaccumulation, and related livestock fatalities. Soil remediation strategies will also be discussed along with their applicability and viability in this particular anthropogenically-influenced seleniferous region.
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Affiliation(s)
- Jessica E Favorito
- Environmental Science Program, 101 Vera King Farris Dr., Stockton University, Galloway, NJ, 08205, USA.
| | - Paul R Grossl
- Department of Plants, Soils, and Climate, 4820 Old Main Hill, Utah State University, Logan, UT, 84322, USA.
| | - Thomas Zane Davis
- USDA-ARS Poisonous Plant Research, 1150 East 1400 North, Logan, UT, 84341, USA.
| | - Matthew J Eick
- Department of Crop and Soil Environmental Sciences, 185 Ag Quad Ln, 237 Smyth Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA.
| | - Nathan Hankes
- Department of Plants, Soils, and Climate, 4820 Old Main Hill, Utah State University, Logan, UT, 84322, USA.
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13
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Trippe RC, Pilon-Smits EAH. Selenium transport and metabolism in plants: Phytoremediation and biofortification implications. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124178. [PMID: 33068997 PMCID: PMC7538129 DOI: 10.1016/j.jhazmat.2020.124178] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/06/2020] [Accepted: 10/02/2020] [Indexed: 05/07/2023]
Abstract
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. Selenium is a necessary human micronutrient, and around a billion people worldwide may be Se deficient. This can be ameliorated by Se biofortification of staple crops. 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. Phytoremediation by plants able to take up large amounts of Se is an important tool to combat pollution issues. Both biofortification and phytoremediation applications require a thorough understanding of how Se is taken up and metabolized by plants. Selenium uptake and translocation in plants are largely accomplished via sulfur (S) transport proteins. Current understanding of these transporters is reviewed here, and transporters that may be manipulated to improve Se uptake are discussed. Plant Se metabolism also largely follows the S metabolic pathway. This pathway is reviewed here, with special focus on genes that have been, or may be manipulated to reduce the accumulation of toxic metabolites or enhance the accumulation of nontoxic metabolites. Finally, unique aspects of Se transport and metabolism in Se hyperaccumulators are reviewed. Hyperaccumulators, which can accumulate Se at up to 1000 times higher concentrations than normal plants, present interesting specialized systems of Se transport and metabolism. Selenium hyperaccumulation mechanisms and potential applications of these mechanisms to biofortification and phytoremediation are presented.
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Affiliation(s)
- Richard C Trippe
- Colorado State University, Biology Department, Fort Collins, CO 80523, USA.
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14
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Selenium Biofortification: Roles, Mechanisms, Responses and Prospects. Molecules 2021; 26:molecules26040881. [PMID: 33562416 PMCID: PMC7914768 DOI: 10.3390/molecules26040881] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/28/2021] [Accepted: 02/05/2021] [Indexed: 12/16/2022] Open
Abstract
The trace element selenium (Se) is a crucial element for many living organisms, including soil microorganisms, plants and animals, including humans. Generally, in Nature Se is taken up in the living cells of microorganisms, plants, animals and humans in several inorganic forms such as selenate, selenite, elemental Se and selenide. These forms are converted to organic forms by biological process, mostly as the two selenoamino acids selenocysteine (SeCys) and selenomethionine (SeMet). The biological systems of plants, animals and humans can fix these amino acids into Se-containing proteins by a modest replacement of methionine with SeMet. While the form SeCys is usually present in the active site of enzymes, which is essential for catalytic activity. Within human cells, organic forms of Se are significant for the accurate functioning of the immune and reproductive systems, the thyroid and the brain, and to enzyme activity within cells. Humans ingest Se through plant and animal foods rich in the element. The concentration of Se in foodstuffs depends on the presence of available forms of Se in soils and its uptake and accumulation by plants and herbivorous animals. Therefore, improving the availability of Se to plants is, therefore, a potential pathway to overcoming human Se deficiencies. Among these prospective pathways, the Se-biofortification of plants has already been established as a pioneering approach for producing Se-enriched agricultural products. To achieve this desirable aim of Se-biofortification, molecular breeding and genetic engineering in combination with novel agronomic and edaphic management approaches should be combined. This current review summarizes the roles, responses, prospects and mechanisms of Se in human nutrition. It also elaborates how biofortification is a plausible approach to resolving Se-deficiency in humans and other animals.
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15
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Zhou X, Yang J, Kronzucker HJ, Shi W. Selenium Biofortification and Interaction With Other Elements in Plants: A Review. FRONTIERS IN PLANT SCIENCE 2020; 11:586421. [PMID: 33224171 PMCID: PMC7674621 DOI: 10.3389/fpls.2020.586421] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/16/2020] [Indexed: 05/16/2023]
Abstract
Selenium (Se) is an essential element for humans and animals and its deficiency in the diet is a global problem. Crop plants are the main source of Se for consumers. Therefore, there is much interest in understanding the factors that govern the accumulation and distribution of Se in the tissues of crop plants and the mechanisms of interaction of Se absorption and accumulation with other elements, especially with a view toward optimizing Se biofortification. An ideal crop for human consumption is rich in essential nutrient elements such as Se, while showing reduced accumulation of toxic elements in its edible parts. This review focuses on (a) summarizing the nutritional functions of Se and the current understanding of Se uptake by plant roots, translocation of Se from roots to shoots, and accumulation of Se in grains; and (b) discussing the influence of nitrogen (N), phosphorus (P), and sulfur (S) on the biofortification of Se. In addition, we discuss interactions of Se with major toxicant metals (Hg, As, and Cd) frequently present in soil. We highlight key challenges in the quest to improve Se biofortification, with a focus on both agronomic practice and human health.
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Affiliation(s)
- Xinbin Zhou
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Jing Yang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Herbert J. Kronzucker
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada
| | - Weiming Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
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16
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Sharma S, Uttam KN. Non-Destructive Assessment of the Impact of Selenium Treatment on the Biochemical Profile of the Leaves of Wheat Seedlings by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1719127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sweta Sharma
- Shah’s Spectroscopy Laboratory, Department of Physics, University of Allahabad, Prayagraj, India
| | - K. N. Uttam
- Shah’s Spectroscopy Laboratory, Department of Physics, University of Allahabad, Prayagraj, India
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17
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Zhang Y, Li C, Ji X, Yun C, Wang M, Luo X. The knowledge domain and emerging trends in phytoremediation: a scientometric analysis with CiteSpace. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:15515-15536. [PMID: 32078132 DOI: 10.1007/s11356-020-07646-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 01/07/2020] [Indexed: 05/24/2023]
Abstract
As a cost-effective, environmentally friendly remediation technology, phytoremediation is defined as the use of green plants to remove pollutants from the environment or render them harmless and has been applied to a variety of contaminated sites throughout the world. There is a prominent phenomenon in which publications about phytoremediation increase each year and involve an increasing number of subject categories. This paper adopts the scientometric analysis method to assess the current state and explore the trends of phytoremediation research based on the bibliographic records retrieved from the Web of Science Core Collection (WoSCC). The results of this paper clearly answer the following questions. (1) What are the publishing characteristics of research on the topic of phytoremediation? What are the characteristics of academic collaboration in phytoremediation research? (2) What are the characteristics and development trends of phytoremediation research? (3) What are the hotspots and frontiers of phytoremediation research? Overall, the research method provides a new approach for the assessment of the performance of phytoremediation research. These results may help new researchers quickly integrate into the field of phytoremediation, as they can easily grasp the frontiers of phytoremediation research and obtain more valuable scientific information. This study also provides references for the follow-up research of relevant researchers.
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Affiliation(s)
- Yu Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
| | - Chen Li
- School of Chemistry and Environmental Science, Shaanxi University of Technology, Hanzhong, 723001, Shaanxi, People's Republic of China.
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China.
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang, 621010, Sichuan, People's Republic of China.
- Shaanxi Key Laboratory of Catalysis, Hanzhong, 723001, Shaanxi, People's Republic of China.
| | - Xiaohui Ji
- School of Chemistry and Environmental Science, Shaanxi University of Technology, Hanzhong, 723001, Shaanxi, People's Republic of China
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang, 621010, Sichuan, People's Republic of China
- Shaanxi Key Laboratory of Catalysis, Hanzhong, 723001, Shaanxi, People's Republic of China
| | - Chaole Yun
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
| | - Maolin Wang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, People's Republic of China
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang, 621010, Sichuan, People's Republic of China
| | - Xuegang Luo
- Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang, 621010, Sichuan, People's Republic of China
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18
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Stonehouse GC, McCarron BJ, Guignardi ZS, El Mehdawi AF, Lima LW, Fakra SC, Pilon-Smits EAH. Selenium Metabolism in Hemp ( Cannabis sativa L.)-Potential for Phytoremediation and Biofortification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4221-4230. [PMID: 32182043 DOI: 10.1021/acs.est.9b07747] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Selenium (Se) deficiency and toxicity affect over a billion people worldwide. Plants can mitigate both problems, via Se biofortification and phytoremediation. Here we explore the potential of hemp (Cannabis sativa L.) for these phytotechnologies. Field surveys in naturally seleniferous agricultural areas in Colorado, United States, found 15-25 μg of Se/g in seed and 5-10 μg of Se/g dry weight (DW) in flowers and leaves. Thus, 4 g of this hemp seed provides the U.S. recommended daily allowance of 55-75 μg of Se. In controlled greenhouse experiments, hemp seedlings grown in Turface supplied with 40-320 μM selenate showed complete tolerance up to 160 μM and accumulated up to 1300 mg of Se/kg shoot dry weight. Mature hemp grown in Turface supplied with 5-80 μM selenate was completely tolerant up to 40 μM selenate and accumulated up to 200 mg of Se/kg DW in leaves, flowers, and seeds. Synchrotron X-ray fluorescence and X-ray absorption spectroscopies of selenate-supplied hemp showed Se to accumulate mainly in the leaf vasculature and in the seed embryos, with predominant Se speciation in C-Se-C forms (57-75% in leaf and more than 86% in seeds). Aqueous seed extracts were found by liquid chromatography mass spectrometry to contain selenomethionine and methyl-selenocysteine (1:1-3 ratio), both excellent dietary Se sources. Floral concentrations of medicinal cannabidiol (CBD) and terpenoids were not affected by Se. We conclude that hemp has good potential for Se phytoremediation while producing Se-biofortified dietary products.
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Affiliation(s)
- Gavin C Stonehouse
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Brandon Jude McCarron
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Zack S Guignardi
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Ali F El Mehdawi
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Leonardo W Lima
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Sirine C Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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19
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Kök AB, Mungan MD, Doğanlar S, Frary A. Transcriptomic analysis of selenium accumulation in Puccinellia distans (Jacq.) Parl., a boron hyperaccumulator. CHEMOSPHERE 2020; 245:125665. [PMID: 31877459 DOI: 10.1016/j.chemosphere.2019.125665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 11/13/2019] [Accepted: 12/12/2019] [Indexed: 05/21/2023]
Abstract
Selenium (Se) is present in a wide variety of natural and man-made materials on Earth. Plants are able to tolerate and (hyper)accumulate Se to different extents. In fact, some species can tolerate and accumulate multiple elements. Puccinellia distans (P. distans), weeping alkali grass, is known to hyperaccumulate extreme concentrations of boron and tolerate high levels of salinity, therefore, we investigated the Se accumulation and tolerance capacities of this species. In addition, P. distans' Se tolerance mechanism was studied using a transcriptomic approach. The results of this study indicated that, when grown in a hydroponic system containing 80 or 120 μM Se, P. distans shoots accumulated from 1500 to 2500-fold more Se than plants grown without the element. Thus, P. distans was discovered to be a novel Se accumulator plant. RNA sequencing results and biochemical analyses helped to shed light on the Se tolerance and accumulation mechanism of P. distans. Here, we suggest that upregulation of Se assimilation and stress response genes may be due to induction of jasmonic acid signaling. In addition, we propose that the cell wall may play an important role in restriction of Se movement to the cytoplasm. Also, we hypothesize that Se accumulates in cells by sequestration of selenate in the vacuole.
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Affiliation(s)
- Aysu Başak Kök
- Department of Molecular Biology and Genetics, Science Faculty, Izmir Institute of Technology, Izmir, 35430, Turkey
| | - Mehmet Direnç Mungan
- Department of Molecular Biology and Genetics, Science Faculty, Izmir Institute of Technology, Izmir, 35430, Turkey
| | - Sami Doğanlar
- Department of Molecular Biology and Genetics, Science Faculty, Izmir Institute of Technology, Izmir, 35430, Turkey
| | - Anne Frary
- Department of Molecular Biology and Genetics, Science Faculty, Izmir Institute of Technology, Izmir, 35430, Turkey.
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20
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Both EB, Stonehouse GC, Lima LW, Fakra SC, Aguirre B, Wangeline AL, Xiang J, Yin H, Jókai Z, Soós Á, Dernovics M, Pilon-Smits EAH. Selenium tolerance, accumulation, localization and speciation in a Cardamine hyperaccumulator and a non-hyperaccumulator. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135041. [PMID: 31767332 PMCID: PMC7060786 DOI: 10.1016/j.scitotenv.2019.135041] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/16/2019] [Accepted: 10/16/2019] [Indexed: 05/23/2023]
Abstract
Cardamine violifolia (family Brassicaceae) is the first discovered selenium hyperaccumulator from the genus Cardamine with unique properties in terms of selenium accumulation, i.e., high abundance of selenolanthionine. In our study, a fully comprehensive experiment was conducted with the comparison of a non-hyperaccumulator Cardamine species, Cardamine pratensis, covering growth characteristics, chlorophyll fluorescence, spatial selenium/sulfur distribution patterns through elemental analyses (synchrotron-based X-Ray Fluorescence and ICP-OES) and speciation data through selenium K-edge micro X-ray absorption near-edge structure analysis (μXANES) and strong cation exchange (SCX)-ICP-MS. The results revealed remarkable differences in contrast to other selenium hyperaccumulators as neither Cardamine species showed evidence of growth stimulation by selenium. Also, selenite uptake was not inhibited by phosphate for either of the Cardamine species. Sulfate inhibited selenate uptake, but the two Cardamine species did not show any difference in this respect. However, μXRF derived speciation maps and selenium/sulfur uptake characteristics provided results that are similar to other formerly reported hyperaccumulator and non-hyperaccumulator Brassicaceae species. μXANES showed organic selenium, "C-Se-C", in seedlings of both species and also in mature C. violifolia plants. In contrast, selenate-supplied mature C. pratensis contained approximately half "C-Se-C" and half selenate. SCX-ICP-MS data showed evidence of the lack of selenocystine in any of the Cardamine plant extracts. Thus, C. violifolia shows clear selenium-related physiological and biochemical differences compared to C. pratensis and other selenium hyperaccumulators.
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Affiliation(s)
- Eszter Borbála Both
- Department of Applied Chemistry, Szent István University, Villányi út 29-43., 1118 Budapest, Hungary; Department of Biology, Colorado State University, 251 West Pitkin Street, Fort Collins, CO 80523, USA
| | - Gavin C Stonehouse
- Department of Biology, Colorado State University, 251 West Pitkin Street, Fort Collins, CO 80523, USA
| | - Leonardo Warzea Lima
- Department of Biology, Colorado State University, 251 West Pitkin Street, Fort Collins, CO 80523, USA
| | - Sirine C Fakra
- Advanced Light Source, Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Bernadette Aguirre
- Biology Department, Laramie County Community College, 1400 E. College Drive, Cheyenne, WY 82007, USA
| | - Ami L Wangeline
- Biology Department, Laramie County Community College, 1400 E. College Drive, Cheyenne, WY 82007, USA
| | - Jiqian Xiang
- Enshi Autonomous Prefecture Academy of Agriculture Sciences, 517 Shizhou Road, Enshi, Hubei Province 445002, China
| | - Hongqing Yin
- Enshi Autonomous Prefecture Academy of Agriculture Sciences, 517 Shizhou Road, Enshi, Hubei Province 445002, China
| | - Zsuzsa Jókai
- Department of Applied Chemistry, Szent István University, Villányi út 29-43., 1118 Budapest, Hungary
| | - Áron Soós
- Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi út 138., 4032 Debrecen, Hungary
| | - Mihály Dernovics
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2., 2462 Martonvásár, Hungary.
| | - Elizabeth A H Pilon-Smits
- Department of Biology, Colorado State University, 251 West Pitkin Street, Fort Collins, CO 80523, USA
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Filek M, Sieprawska A, Telk A, Łabanowska M, Kurdziel M, Walas S, Hartikainen H. Translocation of elements and sugars in wheat genotypes at vegetative and generative stages under continuous selenium exposure. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:6364-6371. [PMID: 31273805 DOI: 10.1002/jsfa.9914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Biofortification with selenium (Se) elevates its concentration in feed and fodder plants and helps to prevent health problems in animals and humans. The aim of this study was to describe Se-induced modifications in the accumulation of elements important for the proper functioning of wheat, one of the most popular cereals. The presence of Se correlated with carbohydrate synthesis and electron paramagnetic resonance (EPR). This explained the mechanisms of Se's antioxidant activity. RESULTS Selenium accumulation in vegetative and generative leaves, and in the grains of three wheat genotypes (cv. Parabola, cv. Raweta and cv. Manu), differing in their stress tolerance and grown hydroponically in the presence of 10 or 20 μM Na2 SeO4, , was proportional to its content in the medium. Stronger Se accumulation was typical of a stress-sensitive genotype. Selenium generally promoted the uptake of macronutrients and micronutrients but their distribution depended on tissue and genotype. Changes in the Se-induced EPR signals of paramagnetic metals and organic radicals corresponded with stress tolerance of the tested genotypes. CONCLUSIONS Se application increased the accumulation of nutrients and carbohydrates that are vital for proper plant growth and development. Accelerated uptake of molybdenum (Mo), an element improving dietary properties of grains, may be an additional advantage of Se fertilization. The mechanisms of Se-induced changes in removing Mn and iron (Fe) ions from macromolecules may be one of the factors that differentiate plant tolerance to oxidative stress. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Maria Filek
- Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Kraków, Poland
- Institute of Biology, Pedagogical University, Kraków, Poland
| | | | - Anna Telk
- Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | | | | | - Stanisław Walas
- Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | - Helinä Hartikainen
- Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland
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Pilon-Smits EAH. On the Ecology of Selenium Accumulation in Plants. PLANTS (BASEL, SWITZERLAND) 2019; 8:E197. [PMID: 31262007 PMCID: PMC6681216 DOI: 10.3390/plants8070197] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/17/2019] [Accepted: 06/27/2019] [Indexed: 11/17/2022]
Abstract
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 concentrations. Thus, Se accumulation can protect plants against Se-sensitive herbivores and pathogens (elemental defense) and reduce surrounding vegetation cover via high-Se litter deposition (elemental allelopathy). While hyperaccumulators negatively impact Se-sensitive ecological partners, they offer a niche for Se-tolerant partners, including beneficial microbial and pollinator symbionts as well as detrimental herbivores, pathogens, and competing plant species. These ecological effects of plant Se accumulation may facilitate the evolution of Se resistance in symbionts. Conversely, Se hyperaccumulation may evolve driven by increasing Se resistance in herbivores, pathogens, or plant neighbors; Se resistance also evolves in mutualist symbionts, minimizing the plant's ecological cost. Interesting topics to address in future research are whether the ecological impacts of plant Se accumulation may affect species composition across trophic levels (favoring Se resistant taxa), and to what extent Se hyperaccumulators form a portal for Se into the local food chain and are important for Se cycling in the local ecosystem.
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White PJ. Selenium metabolism in plants. Biochim Biophys Acta Gen Subj 2018; 1862:2333-2342. [DOI: 10.1016/j.bbagen.2018.05.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 05/01/2018] [Accepted: 05/04/2018] [Indexed: 10/16/2022]
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Plant selenium hyperaccumulation- Ecological effects and potential implications for selenium cycling and community structure. Biochim Biophys Acta Gen Subj 2018; 1862:2372-2382. [DOI: 10.1016/j.bbagen.2018.04.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/06/2018] [Accepted: 04/23/2018] [Indexed: 11/23/2022]
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El Mehdawi AF, Jiang Y, Guignardi ZS, Esmat A, Pilon M, Pilon-Smits EAH, Schiavon M. Influence of sulfate supply on selenium uptake dynamics and expression of sulfate/selenate transporters in selenium hyperaccumulator and nonhyperaccumulator Brassicaceae. THE NEW PHYTOLOGIST 2018; 217:194-205. [PMID: 29034966 DOI: 10.1111/nph.14838] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/08/2017] [Indexed: 05/21/2023]
Abstract
Stanleya pinnata not only hyperaccumulates selenium (Se) to 0.5% of its dry weight, but also exhibits higher tissue Se-to-sulfur (S) ratios than other species and its surroundings. To investigate the mechanisms underlying this Se enrichment, we compared S. pinnata with the nonhyperaccumulators S. elata and Brassica juncea for selenate uptake in long- (9 d) and short-term (1 h) assays, using different concentrations of selenate and competitor sulfate. Different sulfate pre-treatments (0, 0.5, 5 mM, 3 d) were also tested for effects on selenate uptake and sulfate transporters' expression. Relative to nonhyperaccumulators, S. pinnata showed higher rates of root and shoot Se accumulation and less competitive inhibition by sulfate or by high-S pretreatment. The selenate uptake rate for S. pinnata (1 h) was three- to four-fold higher than for nonhyperaccumulators, and not significantly affected by 100-fold excess sulfate, which reduced selenate uptake by 100% in S. elata and 40% in B. juncea. Real-time reverse transcription PCR indicated constitutive upregulation in S. pinnata of sulfate transporters SULTR1;2 (root influx) and SULTR2;1 (translocation), but reduced SULTR1;1 expression (root influx). In S. pinnata, selenate uptake and translocation rates are constitutively elevated and relatively sulfate-independent. Underlying mechanisms likely include overexpression of SULTR1;2 and SULTR2;1, which may additionally have evolved enhanced specificity for selenate over sulfate.
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Affiliation(s)
- Ali F El Mehdawi
- Biology Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - Ying Jiang
- Biology Department, Colorado State University, Fort Collins, CO, 80523, USA
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Zack S Guignardi
- Biology Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - Ahmad Esmat
- Biology Department, Colorado State University, Fort Collins, CO, 80523, USA
| | - Marinus Pilon
- Biology Department, Colorado State University, Fort Collins, CO, 80523, USA
| | | | - Michela Schiavon
- Biology Department, Colorado State University, Fort Collins, CO, 80523, USA
- DAFNAE, University of Padova, Agripolis, 35020, Legnaro, Padua, Italy
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Rathore SS, Shekhawat K, Dass A, Kandpal BK, Singh VK. Phytoremediation Mechanism in Indian Mustard (Brassica juncea) and Its Enhancement Through Agronomic Interventions. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40011-017-0885-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Liu L, Xiao W, Li L, Li DM, Gao DS, Zhu CY, Fu XL. Effect of exogenously applied molybdenum on its absorption and nitrate metabolism in strawberry seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 115:200-211. [PMID: 28376412 DOI: 10.1016/j.plaphy.2017.03.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/22/2017] [Accepted: 03/22/2017] [Indexed: 05/10/2023]
Abstract
Molybdenum (Mo)-an essential element of plants-is involved in nitrogen (N) metabolism. Plants tend to accumulate more nitrate and show lower nitrogen use efficiency (NUE) under Mo-deficient conditions. Improving NUE in fruits reduces the negative effect of large applications of chemical fertilizer, but the mechanisms underlying how Mo enhances NUE remain unclear. We cultivated strawberry seedlings sprayed with 0, 67.5, 135, 168.75, or 202.5 g Mo·ha-1 in a non-soil culture system. The Mo concentration in every plant tissue analyzed increased gradually as Mo application level rose. Mo application affected iron, copper, and selenium adsorption in roots. Seedlings sprayed with 135 g Mo·ha-1 had a higher [15N] shoot:root (S:R) ratio, and 15NUE, and produced higher molybdate transporter type 1 (MOT1) expression levels in the roots and leaves. Seedlings sprayed with 135 g Mo·ha-1 also had relatively high nitrogen metabolic enzyme activities and up-regulated transcript levels of nitrate uptake genes (NRT1.1; NRT2.1) and nitrate-responsive genes. Furthermore, there was a significantly lower NO3- concentration in the leaves and roots, a higher NH4+ concentration in leaves, and a higher glutamine/glutamate (Gln/Glu) concentration at 135 g Mo·ha-1. Seedlings sprayed with 202.5 g Mo·ha-1 showed the opposite trend. Taken together, these results suggest that a 135 g Mo·ha-1 application was optimal because it enhanced NO3- transport from the roots to the shoots and increased NUE by mediating nitrogen metabolic enzyme activities, nitrate transport, and nitrate assimilation gene activities.
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Affiliation(s)
- Li Liu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
| | - Wei Xiao
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
| | - Ling Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
| | - Dong-Mei Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
| | - Dong-Sheng Gao
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
| | - Cui-Ying Zhu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China.
| | - Xi-Ling Fu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China.
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Schiavon M, Pilon-Smits EAH. The fascinating facets of plant selenium accumulation - biochemistry, physiology, evolution and ecology. THE NEW PHYTOLOGIST 2017; 213:1582-1596. [PMID: 27991670 DOI: 10.1111/nph.14378] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 10/31/2016] [Indexed: 05/20/2023]
Abstract
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 and volatilization may be applied in crop biofortification and phytoremediation. Topics covered here include beneficial and toxic effects of Se on plants, mechanisms of Se accumulation and tolerance in plants and algae, Se hyperaccumulation, and ecological and evolutionary aspects of these processes. Plant species differ in the concentration and forms of Se accumulated, Se partitioning at the whole-plant and tissue levels, and the capacity to distinguish Se from sulfur. Mechanisms of Se hyperaccumulation and its adaptive significance appear to involve constitutive up-regulation of sulfate/selenate uptake and assimilation, associated with elevated concentrations of defense-related hormones. Hyperaccumulation has evolved independently in at least three plant families, probably as an elemental defense mechanism and perhaps mediating elemental allelopathy. Elevated plant Se protects plants from generalist herbivores and pathogens, but also gives rise to the evolution of Se-resistant specialists. Plant Se accumulation affects ecological interactions with herbivores, pollinators, neighboring plants, and microbes. Hyperaccumulation tends to negatively affect Se-sensitive ecological partners while facilitating Se-resistant partners, potentially affecting species composition and Se cycling in seleniferous ecosystems.
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Affiliation(s)
- Michela Schiavon
- Biology Department, Colorado State University, Fort Collins, CO, 80523-1878, USA
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Gupta M, Gupta S. An Overview of Selenium Uptake, Metabolism, and Toxicity in Plants. FRONTIERS IN PLANT SCIENCE 2017; 7:2074. [PMID: 28123395 PMCID: PMC5225104 DOI: 10.3389/fpls.2016.02074] [Citation(s) in RCA: 272] [Impact Index Per Article: 38.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/29/2016] [Indexed: 05/18/2023]
Abstract
Selenium (Se) is an essential micronutrient for humans and animals, but lead to toxicity when taken in excessive amounts. Plants are the main source of dietary Se, but essentiality of Se for plants is still controversial. However, Se at low doses protects the plants from variety of abiotic stresses such as cold, drought, desiccation, and metal stress. In animals, Se acts as an antioxidant and helps in reproduction, immune responses, thyroid hormone metabolism. Selenium is chemically similar to sulfur, hence taken up inside the plants via sulfur transporters present inside root plasma membrane, metabolized via sulfur assimilatory pathway, and volatilized into atmosphere. Selenium induced oxidative stress, distorted protein structure and function, are the main causes of Se toxicity in plants at high doses. Plants can play vital role in overcoming Se deficiency and Se toxicity in different regions of the world, hence, detailed mechanism of Se metabolism inside the plants is necessary for designing effective Se phytoremediation and biofortification strategies.
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Affiliation(s)
- Meetu Gupta
- Ecotoxicogenomics Lab, Department of Biotechnology, Jamia Millia IslamiaNew Delhi, India
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31
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Schiavon M, Pilon-Smits EAH. Selenium Biofortification and Phytoremediation Phytotechnologies: A Review. JOURNAL OF ENVIRONMENTAL QUALITY 2017; 46:10-19. [PMID: 28177413 DOI: 10.2134/jeq2016.09.0342] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The element selenium (Se) is both essential and toxic for most life forms, with a narrow margin between deficiency and toxicity. Phytotechnologies using plants and their associated microbes can address both of these problems. To prevent Se toxicity due to excess environmental Se, plants may be used to phytoremediate Se from soil or water. To alleviate Se deficiency in humans or livestock, crops may be biofortified with Se. These two technologies may also be combined: Se-enriched plant material from phytoremediation could be used as green fertilizer or as fortified food. Plants may also be used to "mine" Se from seleniferous soils. The efficiency of Se phytoremediation and biofortification may be further optimized. 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. Furthermore, ecological studies have revealed important effects of plant Se on interactions with herbivores, detrivores, pollinators, neighboring vegetation, and the plant microbiome. All this knowledge can be exploited in phytotechnology programs to optimize plant Se accumulation, transformation, volatilization, and/or tolerance via plant breeding, genetic engineering, and tailored agronomic practices.
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dos Reis AR, El-Ramady H, Santos EF, Gratão PL, Schomburg L. Overview of Selenium Deficiency and Toxicity Worldwide: Affected Areas, Selenium-Related Health Issues, and Case Studies. PLANT ECOPHYSIOLOGY 2017. [DOI: 10.1007/978-3-319-56249-0_13] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Comparative Study on Trace Element Excretions between Nonanuric and Anuric Patients Undergoing Continuous Ambulatory Peritoneal Dialysis. Nutrients 2016; 8:nu8120826. [PMID: 27999390 PMCID: PMC5188479 DOI: 10.3390/nu8120826] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 11/26/2016] [Accepted: 12/15/2016] [Indexed: 01/08/2023] Open
Abstract
Few studies have been reported on alterations of trace elements (TE) in peritoneal dialysis patients. Our objective was to investigate and assess the characteristics of daily TE excretions in continuous ambulatory peritoneal dialysis (CAPD) patients. This cross-sectional study included 61 CAPD patients (nonanuric/anuric: 45/16) and 11 healthy subjects in Wuhan, China between 2013 and 2014. The dialysate and urine of patients and urine of healthy subjects were collected. The concentrations of copper (Cu), zinc (Zn), selenium (Se), molybdenum (Mo), and arsenic (As) in dialysate and urine were determined using inductively coupled plasma mass spectrometer (ICP-MS). Various clinical variables were obtained from automatic biochemical analyzer. Daily Cu, Zn, Se, and Mo excretions in nonanuric patients were higher than healthy subjects, while arsenic excretion in anuric patients was lower. A strong and positive correlation was observed between Se and Mo excretion in both dialysate (β = 0.869, p < 0.010) and urine (β = 0.968, p < 0.010). Furthermore, the clinical variables associated with Se excretion were found to be correlated with Mo excretion. Our findings indicated that nonanuric CAPD patients may suffer from deficiency of some essential TEs, while anuric patients are at risk of arsenic accumulation. A close association between Se and Mo excretion was also found.
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Maillard A, Sorin E, Etienne P, Diquélou S, Koprivova A, Kopriva S, Arkoun M, Gallardo K, Turner M, Cruz F, Yvin JC, Ourry A. Non-Specific Root Transport of Nutrient Gives Access to an Early Nutritional Indicator: The Case of Sulfate and Molybdate. PLoS One 2016; 11:e0166910. [PMID: 27870884 PMCID: PMC5117742 DOI: 10.1371/journal.pone.0166910] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 11/04/2016] [Indexed: 01/08/2023] Open
Abstract
Under sulfur (S) deficiency, crosstalk between nutrients induced accumulation of other nutrients, particularly molybdenum (Mo). This disturbed balanced between S and Mo could provide a way to detect S deficiency and therefore avoid losses in yield and seed quality in cultivated species. Under hydroponic conditions, S deprivation was applied to Brassica napus to determine the precise kinetics of S and Mo uptake and whether sulfate transporters were involved in Mo uptake. Leaf contents of S and Mo were also quantified in a field-grown S deficient oilseed rape crop with different S and N fertilization applications to evaluate the [Mo]:[S] ratio, as an indicator of S nutrition. To test genericity of this indicator, the [Mo]:[S] ratio was also assessed with other cultivated species under different controlled conditions. During S deprivation, Mo uptake was strongly increased in B. napus. This accumulation was not a result of the induction of the molybdate transporters, Mot1 and Asy, but could be a direct consequence of Sultr1.1 and Sultr1.2 inductions. However, analysis of single mutants of these transporters in Arabidopsis thaliana suggested that other sulfate deficiency responsive transporters may be involved. Under field conditions, Mo content was also increased in leaves by a reduction in S fertilization. The [Mo]:[S] ratio significantly discriminated between the plots with different rates of S fertilization. Threshold values were estimated for the hierarchical clustering of commercial crops according to S status. The use of the [Mo]:[S] ratio was also reliable to detect S deficiency for other cultivated species under controlled conditions. The analysis of the leaf [Mo]:[S] ratio seems to be a practical indicator to detect early S deficiency under field conditions and thus improve S fertilization management.
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Affiliation(s)
- Anne Maillard
- Normandie Université, Caen, France
- UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
| | - Elise Sorin
- Normandie Université, Caen, France
- UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- University of Cologne, Botanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Cologne, Germany
| | - Philippe Etienne
- Normandie Université, Caen, France
- UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
| | - Sylvain Diquélou
- Normandie Université, Caen, France
- UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
| | - Anna Koprivova
- University of Cologne, Botanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Cologne, Germany
| | - Stanislav Kopriva
- University of Cologne, Botanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Cologne, Germany
| | - Mustapha Arkoun
- Centre Mondial d’Innovation, CMI, Groupe Roullier, Saint-Malo, France
| | | | | | - Florence Cruz
- Centre Mondial d’Innovation, CMI, Groupe Roullier, Saint-Malo, France
| | - Jean-Claude Yvin
- Centre Mondial d’Innovation, CMI, Groupe Roullier, Saint-Malo, France
| | - Alain Ourry
- Normandie Université, Caen, France
- UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, Caen, France
- * E-mail:
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Golob A, Gadžo D, Stibilj V, Djikić M, Gavrić T, Kreft I, Germ M. Sulphur interferes with selenium accumulation in Tartary buckwheat plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:32-36. [PMID: 27404132 DOI: 10.1016/j.plaphy.2016.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/27/2016] [Accepted: 07/01/2016] [Indexed: 06/06/2023]
Abstract
Tartary buckwheat (Fagopyrum tataricum Gaertn.) and common buckwheat (Fagopyrum esculentum Moench.) plants grown in the field were treated foliarly with 126 μM solutions of selenate and/or sulphate in order to study the effect of sulphur (S) on selenium (Se) concentration in plants. In both species, the concentration of Se in all plant parts was similar in control and S treated plants. In Tartary buckwheat the concentration of Se was higher in S and Se treated plants than in plants treated with Se alone. S was shown to enhance Se accumulation in Tartary buckwheat. It was also shown that it is possible to produce grain and herb of Tartary and common buckwheat containing appropriate amounts of Se for food without affecting the yield of the plants.
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Affiliation(s)
- Aleksandra Golob
- University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
| | - Drena Gadžo
- Faculty of Agriculture and Food Science, University of Sarajevo, Zmaja od Bosne 8, BiH 7000, Sarajevo, Bosnia and Herzegovina.
| | | | - Mirha Djikić
- Faculty of Agriculture and Food Science, University of Sarajevo, Zmaja od Bosne 8, BiH 7000, Sarajevo, Bosnia and Herzegovina.
| | - Teofil Gavrić
- Faculty of Agriculture and Food Science, University of Sarajevo, Zmaja od Bosne 8, BiH 7000, Sarajevo, Bosnia and Herzegovina.
| | - Ivan Kreft
- Slovenian Forestry Institute, Večna pot 2, SI-1000, Ljubljana, Slovenia.
| | - Mateja Germ
- University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
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Schiavon M, Berto C, Malagoli M, Trentin A, Sambo P, Dall'Acqua S, Pilon-Smits EAH. Selenium Biofortification in Radish Enhances Nutritional Quality via Accumulation of Methyl-Selenocysteine and Promotion of Transcripts and Metabolites Related to Glucosinolates, Phenolics, and Amino Acids. FRONTIERS IN PLANT SCIENCE 2016; 7:1371. [PMID: 27683583 PMCID: PMC5021693 DOI: 10.3389/fpls.2016.01371] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/29/2016] [Indexed: 05/21/2023]
Abstract
Two selenium (Se) fertilization methods were tested for their effects on levels of anticarcinogenic selenocompounds in radish (Raphanus sativus), as well as other nutraceuticals. First, radish was grown on soil and foliar selenate applied 7 days before harvest at 0, 5, 10, and 20 mg Se per plant. Selenium levels were up to 1200 mg Se/kg DW in leaves and 120 mg Se/kg DW in roots. The thiols cysteine and glutathione were present at 2-3-fold higher levels in roots of Se treated plants, and total glucosinolate levels were 35% higher, due to increases in glucoraphanin. The only seleno-aminoacid detected in Se treated plants was Se-methyl-SeCys (100 mg/kg FW in leaves, 33 mg/kg FW in roots). The levels of phenolic aminoacids increased with selenate treatment, as did root total nitrogen and protein content, while the level of several polyphenols decreased. Second, radish was grown in hydroponics and supplied with 0, 5, 10, 20, or 40 μM selenate for 1 week. Selenate treatment led to a 20-30% increase in biomass. Selenium concentration was 242 mg Se/kg DW in leaves and 85 mg Se/kg DW in roots. Cysteine levels decreased with Se in leaves but increased in roots; glutatione levels decreased in both. Total glucosinolate levels in leaves decreased with Se treatment due to repression of genes involved in glucosinolates metabolism. Se-methyl-SeCys concentration ranged from 7-15 mg/kg FW. Aminoacid concentration increased with Se treatment in leaves but decreased in roots. Roots of Se treated plants contained elevated transcript levels of sulfate transporters (Sultr) and ATP sulfurylase, a key enzyme of S/Se assimilation. No effects on polyphenols were observed. In conclusion, Se biofortification of radish roots may be achieved via foliar spray or hydroponic supply. One to ten radishes could fulfill the daily human requirement (70 μg) after a single foliar spray of 5 mg selenate per plant or 1 week of 5-10 μM selenate supply in hydroponics. The radishes metabolized selenate to the anticarcinogenic compound Se-methyl-selenocysteine. Selenate treatment enhanced levels of other nutraceuticals in radish roots, including glucoraphanin. Therefore, Se biofortification can produce plants with superior health benefits.
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Affiliation(s)
- Michela Schiavon
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of PadovaLegnaro, Italy
- Biology Department, Colorado State UniversityFort Collins, MS, USA
| | - Chiara Berto
- Department of Pharmaceutical and Pharmacological Sciences, University of PadovaPadova, Italy
| | - Mario Malagoli
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of PadovaLegnaro, Italy
| | - Annarita Trentin
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of PadovaLegnaro, Italy
| | - Paolo Sambo
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of PadovaLegnaro, Italy
| | - Stefano Dall'Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of PadovaPadova, Italy
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Marchand L, Pelosi C, González-Centeno MR, Maillard A, Ourry A, Galland W, Teissedre PL, Bessoule JJ, Mongrand S, Morvan-Bertrand A, Zhang Q, Grosbellet C, Bert V, Oustrière N, Mench M, Brunel-Muguet S. Trace element bioavailability, yield and seed quality of rapeseed (Brassica napus L.) modulated by biochar incorporation into a contaminated technosol. CHEMOSPHERE 2016; 156:150-162. [PMID: 27174828 DOI: 10.1016/j.chemosphere.2016.04.129] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 04/26/2016] [Accepted: 04/30/2016] [Indexed: 05/15/2023]
Abstract
BACKGROUND AND AIMS Rapeseed (Brassica napus L.) is a Cd/Zn-accumulator whereas soil conditioners such as biochars may immobilize trace elements. These potentially complementary soil remediation options were trialed, singly and in combination, in a pot experiment with a metal(loid)-contaminated technosol. METHODS The technosol [total content in mg kg(-1) Zn 6089, Cd 9.4, Cu 110, and Pb 956] was either amended (2% w/w) or not with a poultry manure-derived biochar. Rapeseed was cultivated for both soil treatments during 24 weeks up to harvest under controlled conditions. RESULTS Biochar incorporation into the technosol promoted the As, Cd, Cu, Mo, Ni, Pb and Zn solubility. It decreased foliar B, Cu and Mo concentrations, and Mo concentration in stems, pericarps and seeds. But, it did not impact neither the biomass of aerial rapeseed parts (except a decrease for seeds), nor their C (except a decrease for stems), seed fatty acid, seed starch and soluble sugar contents, and antioxidant capacity in both leaves and seeds. Biochar amendment increased the phytoextraction by aerial plant parts for K, P, and S, reduced it for N, Ca, B, Mo, Ni and Se, whereas it remained steady for Mg, Zn, Fe, Mn, Cu, Cd and Co. CONCLUSIONS The biochar incorporation into this technosol did not promote Cd, Cu and Zn phytoextraction by rapeseed and its potential oilseed production, but increased the solubility of several metal(loid)s. Here Zn and Cd concentrations in the soil pore water were decreased by rapeseed, showing the feasibility to strip available soil Zn and Cd in combination with seed production.
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Affiliation(s)
- Lilian Marchand
- INRA, UMR 1202 BIOGECO, 69 Route d'Arcachon, FR-33612, Cestas cedex, France; Université de Bordeaux, UMR 1202 BIOGECO, Bât B2, Allée G. St-Hilaire, CS50023, FR-33615, Pessac cedex, France
| | - Céline Pelosi
- INRA, UMR 1402 ECOSYS, F-78026, Versailles cedex, France; AgroParisTech, UMR 1402 ECOSYS, F-78850, Thiverval-Grignon, France
| | - María Reyes González-Centeno
- Université de Bordeaux, Institut des Sciences de la Vigne et du Vin, Unité de recherche Oenologie, EA 4577, USC 1366 INRA, IPB, 210, chemin de Leysotte, CS 50008, 33882, Villenave d'Ornon cedex, France
| | - Anne Maillard
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France; Normandie Université, 14032, Caen, France; UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France
| | - Alain Ourry
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France; Normandie Université, 14032, Caen, France; UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France
| | - William Galland
- Université de Bordeaux, UMR 1202 BIOGECO, Bât B2, Allée G. St-Hilaire, CS50023, FR-33615, Pessac cedex, France
| | - Pierre-Louis Teissedre
- Université de Bordeaux, Institut des Sciences de la Vigne et du Vin, Unité de recherche Oenologie, EA 4577, USC 1366 INRA, IPB, 210, chemin de Leysotte, CS 50008, 33882, Villenave d'Ornon cedex, France
| | - Jean-Jacques Bessoule
- INRA, UMR 5200 CNRS-Université Bordeaux, Laboratoire de Biogenèse Membranaire, 71, avenue Edouard Bourlaux, 33883, Villenave-d'Ornon Cedex, France
| | - Sébastien Mongrand
- INRA, UMR 5200 CNRS-Université Bordeaux, Laboratoire de Biogenèse Membranaire, 71, avenue Edouard Bourlaux, 33883, Villenave-d'Ornon Cedex, France
| | - Annette Morvan-Bertrand
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France; Normandie Université, 14032, Caen, France; UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France
| | - Qinzhong Zhang
- Key Laboratory of Agricultural Environment, Ministry of Agriculture, Sino-Australian Joint Laboratory for Sustainable Agro-Ecosystems, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Claire Grosbellet
- Florentaise, La grande Gâcherie, 44850, Saint Mars du Désert, France
| | - Valérie Bert
- INERIS, Technologies and Sustainable and Clean Processes, Parc Technologique Alata, BP2, 60550, Verneuil en Halatte, France
| | - Nadège Oustrière
- INRA, UMR 1202 BIOGECO, 69 Route d'Arcachon, FR-33612, Cestas cedex, France; Université de Bordeaux, UMR 1202 BIOGECO, Bât B2, Allée G. St-Hilaire, CS50023, FR-33615, Pessac cedex, France
| | - Michel Mench
- INRA, UMR 1202 BIOGECO, 69 Route d'Arcachon, FR-33612, Cestas cedex, France; Université de Bordeaux, UMR 1202 BIOGECO, Bât B2, Allée G. St-Hilaire, CS50023, FR-33615, Pessac cedex, France
| | - Sophie Brunel-Muguet
- INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France; Normandie Université, 14032, Caen, France; UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Esplanade de la Paix, CS14032, 14032, Caen Cedex 5, France
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White PJ. Selenium accumulation by plants. ANNALS OF BOTANY 2016; 117:217-35. [PMID: 26718221 PMCID: PMC4724052 DOI: 10.1093/aob/mcv180] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/09/2015] [Accepted: 10/19/2015] [Indexed: 05/19/2023]
Abstract
BACKGROUND Selenium (Se) is an essential mineral element for animals and humans, which they acquire largely from plants. 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 phytoavailability determines the ecology of plants. Most plants cannot grow on seleniferous soils. Most plants that grow on seleniferous soils accumulate <100 mg Se kg(-1) dry matter and cannot tolerate greater tissue Se concentrations. However, some plant species have evolved tolerance to Se, and commonly accumulate tissue Se concentrations >100 mg Se kg(-1) dry matter. These plants are considered to be Se accumulators. Some species can even accumulate Se concentrations of 1000-15 000 mg Se kg(-1 )dry matter and are called Se hyperaccumulators. SCOPE This article provides an overview of Se uptake, translocation and metabolism in plants and highlights the possible genetic basis of differences in these between and within plant species. The review focuses initially on adaptations allowing plants to tolerate large Se concentrations in their tissues and the evolutionary origin of species that hyperaccumulate Se. It then describes the variation in tissue Se concentrations between and within angiosperm species and identifies genes encoding enzymes limiting the rates of incorporation of Se into organic compounds and chromosomal loci that might enable the development of crops with greater Se concentrations in their edible portions. Finally, it discusses transgenic approaches enabling plants to tolerate greater Se concentrations in the rhizosphere and in their tissues. CONCLUSIONS The trait of Se hyperaccumulation has evolved several times in separate angiosperm clades. The ability to tolerate large tissue Se concentrations is primarily related to the ability to divert Se away from the accumulation of selenocysteine and selenomethionine, which might be incorporated into non-functional proteins, through the synthesis of less toxic Se metabilites. There is potential to breed or select crops with greater Se concentrations in their edible tissues, which might be used to increase dietary Se intakes of animals and humans.
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Affiliation(s)
- Philip J White
- Ecological Sciences Group, The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK and Distinguished Scientist Fellowship Program, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
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DeTar RA, Alford ÉR, Pilon-Smits EAH. Molybdenum accumulation, tolerance and molybdenum-selenium-sulfur interactions in Astragalus selenium hyperaccumulator and nonaccumulator species. JOURNAL OF PLANT PHYSIOLOGY 2015; 183:32-40. [PMID: 26074355 DOI: 10.1016/j.jplph.2015.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 05/02/2023]
Abstract
Some species hyperaccumulate selenium (Se) upwards of 0.1% of dry weight. This study addressed whether Se hyperaccumulators also accumulate and tolerate more molybdenum (Mo). A field survey revealed on average 2-fold higher Mo levels in three hyperaccumulator Astragali compared to three nonaccumulator Astragali, which were not significantly different. Next, a controlled study was performed where hyperaccumulators Astragalus racemosus and Astragalus bisulcatus were compared with nonaccumulators Astragalus drummondii and Astragalus convallarius for Mo accumulation and tolerance, alone or in the presence of Se. When grown on agar media with 0, 12, 24 or 48 mg L(-1) molybdate and/or 0, 1.6 or 3.2 mg L(-1) selenate, all species decreased in biomass with increasing Mo supply. Selenium did not impact biomass at the supplied levels. All Astragali accumulated Mo upwards of 0.1% of dry weight. Selenium levels were up to 0.08% in Astragalus racemosus and 0.04% Se in the other species. Overall, there was no correlation between Se hyperaccumulation and Mo accumulation capacity. However, the hyperaccumulators and nonaccumulators differed in some respects. While none of the species had a higher tissue Mo to sulfur (S) ratio than the growth medium, nonaccumulators had a higher Mo/S ratio than hyperaccumulators. Also, while molybdate and selenate reduced S accumulation in nonaccumulators, it did not in hyperaccumulators. Furthermore, A. racemosus had a higher Se/S ratio than its medium, while the other species did not. Additionally, Mo and Se treatment affected S levels in nonaccumulators, but not in hyperaccumulators. In conclusion, there is no evidence of a link between Se and Mo accumulation and tolerance in Astragalus. Sulfate transporters in hyperaccumulating Astragali appear to have higher sulfate specificity over other oxyanions, compared to nonaccumulators, and A. racemosus may have a transporter with enhanced selenate specificity relative to sulfate or molybdate.
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Affiliation(s)
- Rachael Ann DeTar
- Biology Department, Colorado State University, Fort Collins, CO 80523, USA
| | - Élan R Alford
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO 80523, USA; Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, CO 80523, USA
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Winkel LHE, Vriens B, Jones GD, Schneider LS, Pilon-Smits E, Bañuelos GS. Selenium cycling across soil-plant-atmosphere interfaces: a critical review. Nutrients 2015; 7:4199-239. [PMID: 26035246 PMCID: PMC4488781 DOI: 10.3390/nu7064199] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/18/2015] [Indexed: 12/16/2022] Open
Abstract
Selenium (Se) is an essential element for humans and animals, which occurs ubiquitously in the environment. It is present in trace amounts in both organic and inorganic forms in marine and freshwater systems, soils, biomass and in the atmosphere. Low Se levels in certain terrestrial environments have resulted in Se deficiency in humans, while elevated Se levels in waters and soils can be toxic and result in the death of aquatic wildlife and other animals. Human dietary Se intake is largely governed by Se concentrations in plants, which are controlled by root uptake of Se as a function of soil Se concentrations, speciation and bioavailability. In addition, plants and microorganisms can biomethylate Se, which can result in a loss of Se to the atmosphere. The mobilization of Se across soil-plant-atmosphere interfaces is thus of crucial importance for human Se status. This review gives an overview of current knowledge on Se cycling with a specific focus on soil-plant-atmosphere interfaces. Sources, speciation and mobility of Se in soils and plants will be discussed as well as Se hyperaccumulation by plants, biofortification and biomethylation. Future research on Se cycling in the environment is essential to minimize the adverse health effects associated with unsafe environmental Se levels.
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Affiliation(s)
- Lenny H E Winkel
- Swiss Federal Institute of Technology (ETH), Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, CH-8092 Zurich, Switzerland.
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, P.O. Box 611, CH-8600 Duebendorf, Switzerland.
| | - Bas Vriens
- Swiss Federal Institute of Technology (ETH), Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, CH-8092 Zurich, Switzerland.
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, P.O. Box 611, CH-8600 Duebendorf, Switzerland.
| | - Gerrad D Jones
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, P.O. Box 611, CH-8600 Duebendorf, Switzerland.
| | - Leila S Schneider
- Swiss Federal Institute of Technology (ETH), Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, CH-8092 Zurich, Switzerland.
| | | | - Gary S Bañuelos
- USDA, Agricultural Research Service, San Joaquin Valley Agricultural Center, 9611 South Riverbend Avenue, Parlier, CA 93648, USA.
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Wu Z, Bañuelos GS, Lin ZQ, Liu Y, Yuan L, Yin X, Li M. Biofortification and phytoremediation of selenium in China. FRONTIERS IN PLANT SCIENCE 2015; 6:136. [PMID: 25852703 PMCID: PMC4367174 DOI: 10.3389/fpls.2015.00136] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 02/20/2015] [Indexed: 05/07/2023]
Abstract
Selenium (Se) is an essential trace element for humans and animals but at high concentrations, Se becomes toxic to organisms due to Se replacing sulfur in proteins. Selenium biofortification is an agricultural process that increases the accumulation of Se in crops, through plant breeding, genetic engineering, or use of Se fertilizers. Selenium phytoremediation is a green biotechnology to clean up Se-contaminated environments, primarily through phytoextraction and phytovolatilization. By integrating Se phytoremediation and biofortification technologies, Se-enriched plant materials harvested from Se phytoremediation can be used as Se-enriched green manures or other supplementary sources of Se for producing Se-biofortified agricultural products. Earlier studies primarily aimed at enhancing efficacy of phytoremediation and biofortification of Se based on natural variation in progenitor or identification of unique plant species. In this review, we discuss promising approaches to improve biofortification and phytoremediation of Se using knowledge acquired from model crops. We also explored the feasibility of applying biotechnologies such as inoculation of microbial strains for improving the efficiency of biofortification and phytoremediation of Se. 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.
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Affiliation(s)
- Zhilin Wu
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment–School of Plant Protection, Anhui Agriculture University, Hefei, China
- Advanced Lab for Selenium and Human Health-Jiangsu, Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, China
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
| | - Gary S. Bañuelos
- United States Department of Agriculture—Agricultural Research Service, Parlier, CA, USA
| | - Zhi-Qing Lin
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, USA
- Environmental Sciences Program, Southern Illinois University Edwardsville, Edwardsville, IL, USA
| | - Ying Liu
- Advanced Lab for Selenium and Human Health-Jiangsu, Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, China
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
| | - Linxi Yuan
- Advanced Lab for Selenium and Human Health-Jiangsu, Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, China
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
| | - Xuebin Yin
- Advanced Lab for Selenium and Human Health-Jiangsu, Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, China
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
| | - Miao Li
- Key Laboratory of Agri-Food Safety of Anhui Province, School of Resources and Environment–School of Plant Protection, Anhui Agriculture University, Hefei, China
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Sura-de Jong M, Reynolds RJB, Richterova K, Musilova L, Staicu LC, Chocholata I, Cappa JJ, Taghavi S, van der Lelie D, Frantik T, Dolinova I, Strejcek M, Cochran AT, Lovecka P, Pilon-Smits EAH. Selenium hyperaccumulators harbor a diverse endophytic bacterial community characterized by high selenium resistance and plant growth promoting properties. FRONTIERS IN PLANT SCIENCE 2015; 6:113. [PMID: 25784919 PMCID: PMC4345804 DOI: 10.3389/fpls.2015.00113] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 02/11/2015] [Indexed: 05/07/2023]
Abstract
Selenium (Se)-rich plants may be used to provide dietary Se to humans and livestock, and also to clean up Se-polluted soils or waters. This study focused on endophytic bacteria of plants that hyperaccumulate selenium (Se) to 0.5-1% of dry weight. Terminal restriction fragment length polymorphism (T-RFLP) analysis was used to compare the diversity of endophytic bacteria of hyperaccumulators Stanleya pinnata (Brassicaceae) and Astragalus bisulcatus (Fabaceae) with those from related non-accumulators Physaria bellii (Brassicaceae) and Medicago sativa (Fabaceae) collected on the same, seleniferous site. Hyperaccumulators and non-accumulators showed equal T-RF diversity. Parsimony analysis showed that T-RFs from individuals of the same species were more similar to each other than to those from other species, regardless of plant Se content or spatial proximity. Cultivable endophytes from hyperaccumulators S. pinnata and A. bisulcatus were further identified and characterized. The 66 bacterial morphotypes were shown by MS MALDI-TOF Biotyper analysis and 16S rRNA gene sequencing to include strains of Bacillus, Pseudomonas, Pantoea, Staphylococcus, Paenibacillus, Advenella, Arthrobacter, and Variovorax. Most isolates were highly resistant to selenate and selenite (up to 200 mM) and all could reduce selenite to red elemental Se, reduce nitrite and produce siderophores. Seven isolates were selected for plant inoculation and found to have plant growth promoting properties, both in pure culture and when co-cultivated with crop species Brassica juncea (Brassicaceae) or M. sativa. There were no effects on plant Se accumulation. We conclude that Se hyperaccumulators harbor an endophytic bacterial community in their natural seleniferous habitat that is equally diverse to that of comparable non-accumulators. The hyperaccumulator endophytes are characterized by high Se resistance, capacity to produce elemental Se and plant growth promoting properties.
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Affiliation(s)
- Martina Sura-de Jong
- Department of Biochemistry and Microbiology, University of Chemistry and Technology in PraguePrague, Czech Republic
- Life Sciences and Technology, Van Hall Larenstein University of Applied SciencesLeeuwarden, Netherlands
| | | | - Klara Richterova
- Department of Biochemistry and Microbiology, University of Chemistry and Technology in PraguePrague, Czech Republic
| | - Lucie Musilova
- Department of Biochemistry and Microbiology, University of Chemistry and Technology in PraguePrague, Czech Republic
| | - Lucian C. Staicu
- Biology Department, Colorado State UniversityFort Collins, CO, USA
| | - Iva Chocholata
- Department of Biochemistry and Microbiology, University of Chemistry and Technology in PraguePrague, Czech Republic
| | | | - Safiyh Taghavi
- FMC Corporation, Center of Excellence for Agricultural Biosolutions, Research Triangle ParkNC, USA
| | - Daniel van der Lelie
- FMC Corporation, Center of Excellence for Agricultural Biosolutions, Research Triangle ParkNC, USA
| | - Tomas Frantik
- Institute of Botany, Academy of Sciences of the Czech RepublicPruhonice, Czech Republic
| | - Iva Dolinova
- The Institute for Nanomaterials, Advanced Technology and Innovation, Technical University of LiberecLiberec, Czech Republic
| | - Michal Strejcek
- Department of Biochemistry and Microbiology, University of Chemistry and Technology in PraguePrague, Czech Republic
| | | | - Petra Lovecka
- Department of Biochemistry and Microbiology, University of Chemistry and Technology in PraguePrague, Czech Republic
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Cappa JJ, Yetter C, Fakra S, Cappa PJ, DeTar R, Landes C, Pilon-Smits EAH, Simmons MP. Evolution of selenium hyperaccumulation in Stanleya (Brassicaceae) as inferred from phylogeny, physiology and X-ray microprobe analysis. THE NEW PHYTOLOGIST 2015; 205:583-95. [PMID: 25262627 DOI: 10.1111/nph.13071] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 08/07/2014] [Indexed: 05/20/2023]
Abstract
Past studies have identified herbivory as a likely selection pressure for the evolution of hyperaccumulation, but few have tested the origin(s) of hyperaccumulation in a phylogenetic context. We focused on the evolutionary history of selenium (Se) hyperaccumulation in Stanleya (Brassicaceae). Multiple accessions were collected for all Stanleya taxa and two outgroup species. We sequenced four nuclear gene regions and performed a phylogenetic analysis. Ancestral reconstruction was used to predict the states for Se-related traits in a parsimony framework. Furthermore, we tested the taxa for Se localization and speciation using X-ray microprobe analyses. True hyperaccumulation was found in three taxa within the S. pinnata/bipinnata clade. Tolerance to hyperaccumulator Se concentrations was found in several taxa across the phylogeny, including the hyperaccumulators. X-ray analysis revealed two distinct patterns of leaf Se localization across the genus: marginal and vascular. All taxa accumulated predominantly (65-96%) organic Se with the C-Se-C configuration. These results give insight into the evolution of Se hyperaccumulation in Stanleya and suggest that Se tolerance and the capacity to produce organic Se are likely prerequisites for Se hyperaccumulation in Stanleya.
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Affiliation(s)
- Jennifer J Cappa
- Department of Biology, Colorado State University, Fort Collins, CO, 80523-1878, USA
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Malagoli M, Schiavon M, dall’Acqua S, Pilon-Smits EAH. Effects of selenium biofortification on crop nutritional quality. FRONTIERS IN PLANT SCIENCE 2015; 6:280. [PMID: 25954299 PMCID: PMC4404738 DOI: 10.3389/fpls.2015.00280] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 04/08/2015] [Indexed: 05/02/2023]
Abstract
Selenium (Se) at very low doses has crucial functions in humans and animals. Since plants represent the main dietary source of this element, Se-containing crops may be used as a means to deliver Se to consumers (biofortification). Several strategies have been exploited to increase plant Se content. Selenium assimilation in plants affects both sulfur (S) and nitrogen (N) metabolic pathways, which is why recent research has also focused on the effect of Se fertilization on the production of S- and N- secondary metabolites with putative health benefits. In this review we discuss the function of Se in plant and human nutrition and the progress in the genetic engineering of Se metabolism to increase the levels and bioavailability of this element in food crops. Particular attention is paid to Se biofortification and the synthesis of compounds with beneficial effects on health.
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Affiliation(s)
- Mario Malagoli
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of Padova, Padova, Italy
- *Correspondence: Mario Malagoli, Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of Padova, Agripolis, 35020 Legnaro Padova, Italy
| | - Michela Schiavon
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of Padova, Padova, Italy
| | - Stefano dall’Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
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Schiavon M, Pilon M, Malagoli M, Pilon-Smits EAH. Exploring the importance of sulfate transporters and ATP sulphurylases for selenium hyperaccumulation-a comparison of Stanleya pinnata and Brassica juncea (Brassicaceae). FRONTIERS IN PLANT SCIENCE 2015; 6:2. [PMID: 25688247 PMCID: PMC4304243 DOI: 10.3389/fpls.2015.00002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 01/05/2015] [Indexed: 05/07/2023]
Abstract
Selenium (Se) hyperaccumulation, the capacity of some species to concentrate Se to levels upwards of 0.1% of dry weight, is an intriguing phenomenon that is only partially understood. Questions that remain to be answered are: do hyperaccumulators have one or more Se-specific transporters? How are these regulated by Se and sulfur (S)? In this study, hyperaccumulator Stanleya pinnata was compared with related non-hyperaccumulator Brassica juncea with respect to S-dependent selenate uptake and translocation, as well as for the expression levels of three sulfate/selenate transporters (Sultr) and three ATP sulphurylases (APS). Selenium accumulation went down ~10-fold with increasing sulfate supply in B. juncea, while S. pinnata only had a 2-3-fold difference in Se uptake between the highest (5 mM) and lowest sulfate (0 mM) treatments. The Se/S ratio was generally higher in the hyperaccumulator than the non-hyperaccumulator, and while tissue Se/S ratio in B. juncea largely reflected the ratio in the growth medium, S. pinnata enriched itself up to 5-fold with Se relative to S. The transcript levels of Sultr1;2 and 2;1 and APS1, 2, and 4 were generally much higher in S. pinnata than B. juncea, and the species showed differential transcript responses to S and Se supply. These results indicate that S. pinnata has at least one transporter with significant selenate specificity over sulfate. Also, the hyperaccumulator has elevated expression levels of several sulfate/selenate transporters and APS enzymes, which likely contribute to the Se hyperaccumulation and hypertolerance phenotype.
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Affiliation(s)
- Michela Schiavon
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of PadovaLegnaro, Padova, Italy
| | - Marinus Pilon
- Department of Biology, Colorado State UniversityFort Collins, CO, USA
| | - Mario Malagoli
- Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of PadovaLegnaro, Padova, Italy
- *Correspondence: Mario Malagoli, Department of Agronomy, Food, Natural Resources, Animals and the Environment, Agripolis, Viale dell'Università 16, Legnaro, Padova 35020, Italy e-mail:
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