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Wu K, Wang L, Wu Z, Liu Z, Li Z, Shen J, Shi S, Liu H, Rensing C, Feng R. Selenite reduced cadmium uptake, interfered signal transduction of endogenous phytohormones, and stimulated secretion of tartaric acid based on a combined analysis of non-invasive micro-test technique, transcriptome and metabolome. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108107. [PMID: 38029613 DOI: 10.1016/j.plaphy.2023.108107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/09/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023]
Abstract
Selenium (Se) can reduce uptake and translocation of cadmium (Cd) in plants via plenty of ways, including regulation of root morphology. However, the underlying mechanisms on how Se will regulate root morphology under metal(loid) stresses are not fully illustrated. To fill up this knowledge gap, we investigated the effects of 0.5 mg L-1 selenite (Se(IV)) on root exudates, root morphology, root endogenous hormones, and Cd uptake efficiency of rice under the 1 mg L-1 Cd stress condition. The results showed that Se(IV) significantly reduced shoot and root Cd concentrations, and decreased Cd uptake efficiency via root hairs determined by a non-invasive micro-test (NMT) technology. When compared to the 1 mg L-1 Cd (Cd1) treatment, addition of 0.5 mg L-1 Se(IV) (1) significantly reduced root surface area and tip numbers, and non-significantly reduced root length, but significantly enhanced root diameter and root volume; (2) significantly enhanced concentrations of tartaric acid in the root exudate solution, root auxin (IAA) and root jasmonic acid (JA) via a UHPLC or a HPLC analysis; (3) significantly up-regulated metabolites correlated with synthesis of IAA, JA, gibberellin (GA), and salicylic acid, such as GA53, M-SA, (+/-)7-epi-JA, and derivatives of tryptophan and indole in the metabolome analysis. However, results of transcriptome analysis showed that (1) no upregulated differentially expressed genes (DEGs) were enriched in IAA synthesis; (2) some upregulated DEGs were found to be enriched in JA and GA53 synthesis pathways. In summary, although Se(IV) stimulated the synthesis of IAA, JA, and GA53, it significantly inhibited root growth mainly by 1) affecting signal transduction of IAA and GA; 2) altering IAA polar transport and homeostasis; and 3) regulating DEGs including SAUR32, SAUR36, SAUR76, OsSub33, OsEXPA8, OsEXPA18, and Os6bglu24.
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Affiliation(s)
- KongYuan Wu
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - LiZhen Wang
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - ZiHan Wu
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - ZiQing Liu
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - ZengFei Li
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - Jun Shen
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - ShengJie Shi
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - Hong Liu
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China.
| | - Christopher Rensing
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China
| | - Renwei Feng
- Institute of Environmental Microbiology, College of Resources and Environment, Fuzhou, 350002, China.
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Manivannan N, Subirana MA, Boada R, Marini C, Llugany M, Valiente M, Simonelli L. Mercury speciation in selenium enriched wheat plants hydroponically exposed to mercury pollution. Sci Rep 2023; 13:21132. [PMID: 38036518 PMCID: PMC10689832 DOI: 10.1038/s41598-023-46056-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023] Open
Abstract
Mercury (Hg) pollution in agricultural soils and its potential pathway to the human food chain can pose a serious health concern. Understanding the pathway of Hg in plants and how the speciation may change upon interaction with other elements used for biofortification can be critical to assess the real implications for the final plant-based product. In that respect, selenium (Se) biofortification of crops grown in Se-poor soil regions is becoming a common practice to overcome Se deficient diets. Therefore, it is important to assess the interplay between these two elements since Se may form complexes with Hg reducing its bioavailability and toxicity. In this work, the speciation of Hg in wheat plants grown hydroponically under the presence of Hg (HgCl2) and biofortified with Se (selenite, selenate, or a 1:1 mixture of both) has been investigated by X-ray absorption spectroscopy at the Hg L3-edge. The main Hg species found in wheat grains was the highly toxic methylmercury. It was found that the Se-biofortification of wheat did not prevent, in general, the Hg translocation to grains. Only the 1:1 mixture treatment seemed to have an effect in reducing the levels of Hg and the presence of methylmercury in grains.
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Affiliation(s)
- Nithyapriya Manivannan
- ALBA Synchrotron, Carrer de la llum 2-26, Cerdanyola del Vallès, 08290, Barcelona, Spain
- GTS-UAB Research Group, Department of Chemistry, Faculty of Science, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Maria Angels Subirana
- GTS-UAB Research Group, Department of Chemistry, Faculty of Science, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Roberto Boada
- ALBA Synchrotron, Carrer de la llum 2-26, Cerdanyola del Vallès, 08290, Barcelona, Spain
- GTS-UAB Research Group, Department of Chemistry, Faculty of Science, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Carlo Marini
- ALBA Synchrotron, Carrer de la llum 2-26, Cerdanyola del Vallès, 08290, Barcelona, Spain
| | - Mercè Llugany
- Plant Physiology Group (BABVE), Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Manuel Valiente
- GTS-UAB Research Group, Department of Chemistry, Faculty of Science, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Laura Simonelli
- ALBA Synchrotron, Carrer de la llum 2-26, Cerdanyola del Vallès, 08290, Barcelona, Spain.
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Lai X, Yang X, Rao S, Zhu Z, Cong X, Ye J, Zhang W, Liao Y, Cheng S, Xu F. Advances in physiological mechanisms of selenium to improve heavy metal stress tolerance in plants. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:913-919. [PMID: 35583793 DOI: 10.1111/plb.13435] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
Selenium (Se) is a metalloid mineral nutrient for human and animal health. Plants are the main foodstuff source of the Se intake of humans. For plants, the addition of an appropriate amount of Se could promotes growth and development, and improves the tolerance to environmental stress, especially stress from some of heavy metals (HM) stress, such as cadmium (Cd) and mercury (Hg). This paper mainly reviews and summarizes the physiological mechanism of Se in enhancing HM stress tolerance in plants. The antagonistic effect of Se on HM is a comprehensive effect that includes many physiological mechanisms. Se can promote the removal of excessive reactive oxygen species and reduce the oxidative damage of plant cells under HM elements stress. Se participates in the regulation of the transportation and distribution of HM ions in plants, and alleviates the damage caused by of HM stress. Moreover, Se combine with HM elements to form Se-HM complexes and promote the production of phytochelatins (PCs), thereby reducing the accumulation of HM ions in plants. Overall, Se plays an important role in plant response to HM stress, but current studies mainly focus on physiological mechanism, and further in-depth study on the molecular mechanism is essential to confirm the participation of Se in plant response to environmental stress. This review helps to comprehensively understand the physiological mechanism of Se in plant tolerance against to HM stress of plants, and provides important theoretical support for the practical application of Se in environmental remediation and agricultural development.
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Affiliation(s)
- X Lai
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - X Yang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - S Rao
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
| | - Z Zhu
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
| | - X Cong
- School of Modern Industry for Selenium Science and Engineering, National R&D Center for Se-rich Agricultural Products Processing Technology, Wuhan Polytechnic University, Wuhan, China
- Enshi Se-Run Health Tech Development Co., Ltd, Enshi, China
| | - J Ye
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - W Zhang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - Y Liao
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
| | - S 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, China
| | - F Xu
- College of Horticulture and Gardening, Yangtze University, Jingzhou, China
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Rizwan M, Ali S, Rehman MZU, Rinklebe J, Tsang DCW, Tack FMG, Abbasi GH, Hussain A, Igalavithana AD, Lee BC, Ok YS. Effects of selenium on the uptake of toxic trace elements by crop plants: A review. CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2021. [PMID: 0 DOI: 10.1080/10643389.2020.1796566] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Affiliation(s)
- Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan
- Department of Biological Sciences and Technology, China Medical University, Taichung, Taiwan
| | - Muhammad Zia ur Rehman
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Jörg Rinklebe
- University of Wuppertal, Soil- and Groundwater-Management, Wuppertal, Germany
- Department of Environment, Energy and Geoinformatics, University of Sejong, Seoul, South Korea
| | - Daniel C. W. Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Filip M. G. Tack
- Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium
| | - Ghulam Hasan Abbasi
- Department of Soil Science, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Afzal Hussain
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, Pakistan
| | - Avanthi Deshani Igalavithana
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
- Department of Soil Science, Faculty of Agriculture, University of Peradeniya, Peradeniya, Sri Lanka
| | - Byung Cheon Lee
- College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
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Tran TAT, Dinh QT, Zhou F, Zhai H, Xue M, Du Z, Bañuelos GS, Liang D. Mechanisms underlying mercury detoxification in soil-plant systems after selenium application: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:46852-46876. [PMID: 34254235 DOI: 10.1007/s11356-021-15048-1] [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: 01/20/2021] [Accepted: 06/17/2021] [Indexed: 05/12/2023]
Abstract
Feasible countermeasures to mitigate mercury (Hg) accumulation and its deleterious effects on crops are urgently needed worldwide. Selenium (Se) fertilizer application is a cost-effective strategy to reduce Hg concentrations, promote agro-environmental sustainability and food safety, and decrease the public health risk posed by Hg-contaminated soils and its accumulation in food crops. This holistic review focuses on the processes and detoxification mechanisms of Hg in whole soil-plant systems after Se application. The reduction of Hg bioavailability in soil, the formation of inert HgSe or/and HgSe-containing proteinaceous complexes in the rhizosphere and/or roots, and the reduction of plant root uptake and translocation of Hg in plant after Se application are systemically discussed. In addition, the positive responses in plant physiological and biochemical processes to Se application under Hg stress are presented to show the possible mechanisms for protecting the plant. However, application of high levels Se showed synergistic toxic effect with Hg and inhibited plant growth. The effectiveness of Se application methods, rates, and species on Hg detoxification is compared. This review provides a good approach for plant production in Hg-contaminated areas to meet food security demands and reduce the public health risk.
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Affiliation(s)
- Thi Anh Thu Tran
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Faculty of Natural Resources and Environmental Management, Thu Dau Mot University, Thu Dau Mot City, Binh Duong, Vietnam
| | - Quang Toan Dinh
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Department of Natural Resources and Environment of Thanh Hoa, Thanh Hoa, 400570, Vietnam
| | - Fei Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Hui Zhai
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Mingyue Xue
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zekun Du
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Gary S Bañuelos
- USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, Parlier, CA, 93648-9757, USA
| | - Dongli Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China.
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shaanxi, China.
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6
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Riaz M, Kamran M, Rizwan M, Ali S, Parveen A, Malik Z, Wang X. Cadmium uptake and translocation: selenium and silicon roles in Cd detoxification for the production of low Cd crops: a critical review. CHEMOSPHERE 2021; 273:129690. [PMID: 33524757 DOI: 10.1016/j.chemosphere.2021.129690] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/17/2021] [Accepted: 01/20/2021] [Indexed: 05/10/2023]
Abstract
Cadmium (Cd) is a primary contaminant in agricultural soils of the world. The ability of Cd uptake, transport, detoxification, and accumulation varies among different plant species and genotypes. Cd is translocated from soil to root by different transporters which are used for essential plant nutrient uptake. A number of strategies have been suggested for decreasing Cd toxicity in Cd contaminated soils. Recently, a lot of research have been carried out on minimizing Cd uptake through selenium (Se) and silicon (Si) applications. Both Se and Si have been reported to mitigate Cd toxicity in different crops. Vacuolar sequestration, formation of phytochelatins, and cell wall adsorption have been reported as effective mechanisms for Cd detoxification. The present review discussed past and current knowledge of literature to better understand Cd toxicity and its mitigation by adopting different feasible and practical approaches.
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Affiliation(s)
- Muhammad Riaz
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Muhammad Kamran
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan
| | - Aasma Parveen
- Department of Soil Science, Faculty of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Punjab, Pakistan
| | - Zaffar Malik
- Department of Soil Science, Faculty of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Punjab, Pakistan
| | - Xiurong Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China.
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7
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Feng R, Zhao P, Zhu Y, Yang J, Wei X, Yang L, Liu H, Rensing C, Ding Y. Application of inorganic selenium to reduce accumulation and toxicity of heavy metals (metalloids) in plants: The main mechanisms, concerns, and risks. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:144776. [PMID: 33545486 DOI: 10.1016/j.scitotenv.2020.144776] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/19/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Anthropogenic activities such as mining, industrialization and subsequent emission of industrial waste, and agricultural practices have led to an increase in the accumulation of metal(loid)s in agricultural soils and crops, which threatens the health of people; the risk is more pronounced for individuals whose survival depends on food sources from several contaminated regions. Selenium (Se) is an element essential for the normal functioning of the human body and is a beneficial element for plants. Se deficiency in the diet is a common issue in many countries around the world, such as China and Egypt. >40 diseases are associated with Se deficiency. In practice, Se compounds have been applied through foliar sprays or via base application of fertilizers to increase Se concentration in the edible parts of crops and to satisfy the daily Se intake. Moreover, Se at low concentrations has been used to mitigate the toxicity of many metal(loid)s. In this review, we present an overview of the latest knowledge and practices with regards to the utilization of Se to reduce the uptake/toxicity of metal(loid)s in plants. We have focused on the following issues: 1) the current status of understanding the mechanisms of detoxification and uptake restriction of metal(loid)s regulated by Se; 2) the optimal dose and speciation of Se, and stage of plant growth that is optimal for application; 3) the differences in the efficiency of different application methods of Se including seed priming, base application, and foliar spray of Se fertilizers; 4) the possibility of using Se along with other methods to reduce multiple metal(loid) accumulation in crops; and 5) potential risks when Se is used to reduce metal(loid) accumulation in crops.
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Affiliation(s)
- RenWei Feng
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China.
| | - PingPing Zhao
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - YanMing Zhu
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - JiGang Yang
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - XinQi Wei
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - Li Yang
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - Hong Liu
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - Christopher Rensing
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture & Forestry University, Fuzhou 350002, China
| | - YongZhen Ding
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
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Niu H, Zhan K, Xu W, Peng C, Hou C, Li Y, Hou R, Wan X, Cai H. Selenium treatment modulates fluoride distribution and mitigates fluoride stress in tea plant (Camellia sinensis (L.) O. Kuntze). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115603. [PMID: 33254693 DOI: 10.1016/j.envpol.2020.115603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/24/2020] [Accepted: 09/02/2020] [Indexed: 06/12/2023]
Abstract
Tea plants (Camellia sinensis (L.) O. Kuntze) can hyperaccumulate fluoride (F). The accumulation of F in tea leaves may induce serious health problems in tea consumers. It has been reported that selenium (Se) could reduce the accumulation of heavy metals in plants. Thus, the aim of this study was to investigate whether exogenous Se could reduce F accumulation in tea plant. The results showed that Se treatment could decrease F content in tea leaves, increase F accumulation in roots, decrease the proportion of water-soluble F in tea leaves and increase the Se content. Low F levels promoted the accumulation of Se in tea plants. Se treatment could modulate F-induced oxidative injury by decreasing malondialdehyde level and increasing the activities of superoxide dismutase, peroxidase and catalase. Moreover, Se inhibited F-induced increase in leaf iron, calcium, aluminum, leaf and root magnesium and lead contents. These results showed that Se application could decrease F content and increase Se content in tea leaves, which may be served as a novel strategy for production of healthy tea.
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Affiliation(s)
- Huiliang Niu
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Kui Zhan
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Wei Xu
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Chuanyi Peng
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Chaoyuan Hou
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Yeyun Li
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Ruyan Hou
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Xiaochun Wan
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Huimei Cai
- School of Tea & Food Science and Technology, Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, Anhui, China.
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Shahid M, Khalid S, Bibi I, Bundschuh J, Khan Niazi N, Dumat C. A critical review of mercury speciation, bioavailability, toxicity and detoxification in soil-plant environment: Ecotoxicology and health risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 711:134749. [PMID: 32000322 DOI: 10.1016/j.scitotenv.2019.134749] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/18/2019] [Accepted: 09/29/2019] [Indexed: 05/09/2023]
Abstract
Environmental contamination by a non-essential and non-beneficial, although potentially toxic mercury (Hg), is becoming a great threat to the living organisms at a global scale. Owing to its various uses in numerous industrial processes, high amount of Hg is released into different environmental compartments. Environmental Hg contamination can result in food chain contamination, especially due to its accumulation in edible plant parts. Consumption of Hg-rich food is a key source of Hg exposure to humans. Since Hg does not possess any identified biological role and has genotoxic and carcinogenic potential, it is critical to monitor its biogeochemical behavior in the soil-plant system and its influence in terms of possible food chain contamination and human exposure. This review traces a plausible link among Hg levels, its chemical speciation and phytoavailability in soil, accumulation in plants, phytotoxicity and detoxification of Hg inside the plant. The role of different enzymatic (peroxidase, catalase, ascorbate peroxidase, superoxide dismutase, glutathione peroxidase) and non-enzymatic (glutathione, phytochelatins, proline and ascorbic acid) antioxidants has also been elucidated with respect to enhanced generation of reactive radicles and resulting oxidative stress. The review also outlines Hg build-up in edible plant tissues and associated health risks. The biogeochemical role of Hg in the soil-plant system and associated health risks have been described with well summarized and up-to-date data in 12 tables and 4 figures. We believe that this comprehensive review article and meta-analysis of Hg data can be greatly valuable for scientists, researchers, policymakers and graduate-level students.
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Affiliation(s)
- Muhammad Shahid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari-61100, Pakistan.
| | - Sana Khalid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari-61100, Pakistan
| | - Irshad Bibi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Jochen Bundschuh
- UNESCO Chair on Groundwater Arsenic within the 2030 Agenda for Sustainable Development, University of Southern Queensland, West Street, Toowoomba, Queensland 4350, Australia
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan; School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland, Australia.
| | - Camille Dumat
- Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès - Toulouse II, 5 allée Machado A., 31058 Toulouse, cedex 9, France; Université de Toulouse, INP-ENSAT, Avenue de l'Agrobiopole, 31326 Auzeville-Tolosane, France; Association Réseau-Agriville (http://reseau-agriville.com/), France
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10
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Auobi Amirabad S, Behtash F, Vafaee Y. Selenium mitigates cadmium toxicity by preventing oxidative stress and enhancing photosynthesis and micronutrient availability on radish (Raphanus sativus L.) cv. Cherry Belle. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:12476-12490. [PMID: 31997246 DOI: 10.1007/s11356-020-07751-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/14/2020] [Indexed: 05/08/2023]
Abstract
We aimed to examine the effects of selenium on the tolerance of radish plants CV. Cherri Belle under cadmium phytotoxicity. The biomass accumulation was drastically decreased under Cd toxicity and the supplementary Se maintained the biomass acquisition under Cd pressure. The chlorophyll index (SPAD), PSII efficiency (Fv/Fm), and PSII quantum yield (ΦPSII) were declined in response to Cd treatment, while Se nutrition improved these variables in a dose-dependent manner. The highest H2O2 and MDA contents were observed in the plants fed with 10 mg-1 L Cd. The Cd stress resulted in a considerable decline in the activities of GPX, CAT, and APX antioxidant enzymes, while Se supplementation increased their activities in the Cd-treated plants. Based on the mineral analyses, no Cd was traced in the control plants, while the Cd concentration in both roots and leaves of the Cd-stressed radish plants increased with increasing the supplemented Cd levels. Compared with plants solely treated with 10 mg L-1 Cd, Se nutrition declined the Cd absorption in roots and in leaves. The concentration of evaluated micronutrients including Fe, Mn, Cu, and Zn tended to decrease in the Cd-imposed plants in comparison with control plants. Se nutrition of both stressed and non-stressed radish plants increased the concentrations of the studied microelements, except for Zn in which the individual use of Se led to a decrease in the Zn content. Significant positive and negative correlation values were found among the studied traits and the principle component analysis (PCA) biplot and Ward dendrogram confirmed the results of the correlation analysis. Se proved to be efficient in the alleviation of Cd-triggered deleterious effects by improving biomass acquisition, enhancing chlorophyll biosynthesis and fluorescence, and increasing micronutrient uptake in a dose-dependent manner. Furthermore, the Se alleviation mechanism under Cd stress was also connected with the activation of enzymatic antioxidative protection system as well as with decreasing Cd uptake, transport, and distribution in radish leaves. Altogether, our research strongly suggests the implementation of Se in the growth medium to enhance the tolerance of radish plants under Cd stress.
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Affiliation(s)
- Setareh Auobi Amirabad
- Department of Horticultural Science, Faculty of Agriculture, University of Maraghe, Maraghe, 55181-83111, Iran
| | - Farhad Behtash
- Department of Horticultural Science, Faculty of Agriculture, University of Maraghe, Maraghe, 55181-83111, Iran
| | - Yavar Vafaee
- Department of Horticultural Science, Faculty of Agriculture, University of Kurdistan, Sanandaj, 66177-15175, Iran.
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11
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Kavčič A, Mikuš K, Debeljak M, Teun van Elteren J, Arčon I, Kodre A, Kump P, Karydas AG, Migliori A, Czyzycki M, Vogel-Mikuš K. Localization, ligand environment, bioavailability and toxicity of mercury in Boletus spp. and Scutiger pes-caprae mushrooms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109623. [PMID: 31518823 DOI: 10.1016/j.ecoenv.2019.109623] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/16/2019] [Accepted: 08/28/2019] [Indexed: 05/22/2023]
Abstract
This study provides information on mercury (Hg) localization, speciation and ligand environment in edible mushrooms: Boletus edulis, B. aereus and Scutiger pes-caprae collected at non-polluted and Hg polluted sites, by LA-ICP-MS, SR-μ-XRF and Hg L3-edge XANES and EXAFS. Mushrooms (especially young ones) collected at Hg polluted sites can contain more than 100 μg Hg g-1 of dry mass. Imaging of the element distribution shows that Hg accumulates mainly in the spore-forming part (hymenium) of the cap. Removal of hymenium before consumption can eliminate more than 50% of accumulated Hg. Mercury is mainly coordinated to di-thiols (43-82%), followed by di-selenols (13-35%) and tetra-thiols (12-20%). Mercury bioavailability, as determined by feeding the mushrooms to Spanish slugs (known metal bioindicators owing to accumulation of metals in their digestive gland), ranged from 4% (S. pes-caprae) to 30% (B. aereus), and decreased with increasing selenium (Se) levels in the mushrooms. Elevated Hg levels in mushrooms fed to the slugs induced toxic effects, but these effects were counteracted with increasing Se concentrations in the mushrooms, pointing to a protective role of Se against Hg toxicity through HgSe complexation. Nevertheless, consumption of the studied mushroom species from Hg polluted sites should be avoided.
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Affiliation(s)
- Anja Kavčič
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia
| | - Klemen Mikuš
- Biotechnical Educational Centre Ljubljana, Cesta V Mestni Log 47, SI-1000, Ljubljana, Slovenia
| | - Marta Debeljak
- National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia
| | | | - Iztok Arčon
- Jozef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia; University of Nova Gorica, Vipavska 13, SI-5000, Nova Gorica, Slovenia
| | - Alojz Kodre
- Jozef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia; University of Ljubljana, Faculty for Mathematics and Physics, Jadranska 19, SI-1000, Ljubljana, Slovenia
| | - Peter Kump
- Jozef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Andreas Germanos Karydas
- Institute of Nuclear and Particle Physics, National Centre for Scientific Research 'Demokritos', Patr. Grigoriou E' & 27 Neapoleos St, 153 41, Agia Paraskevi, Greece
| | - Alessandro Migliori
- Nuclear Science and Instrumentation Laboratory, International Atomic Energy Agency (IAEA) Laboratories, A-2444, Seibersdorf, Austria
| | - Mateusz Czyzycki
- Karlsruhe Institute of Technology, Institute for Photon Science and Synchrotron Radiation, Laboratory for Applications of Synchrotron Radiation, Kaiserstrasse 12, 76131, Karlsruhe, Germany; AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Al. Mickiewicza 30, 30-059, Krakow, Poland
| | - Katarina Vogel-Mikuš
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia; Jozef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia.
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Bai X, Li Y, Liang X, Li H, Zhao J, Li YF, Gao Y. Botanic Metallomics of Mercury and Selenium: Current Understanding of Mercury-Selenium Antagonism in Plant with the Traditional and Advanced Technology. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 102:628-634. [PMID: 31053869 DOI: 10.1007/s00128-019-02628-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
The antagonistic effect between mercury (Hg) and selenium (Se) is conclusively established in animals and human beings in the past decades. However, the underlying mechanisms of the interactions between Hg and Se in plants, as well as the metabolism of Hg-Se compounds in crops are still far from being understood. The botanic metallomics of Hg and Se mainly focuses on the translocation, transformation, and metabolism of Hg and Se in the environmental and botanic systems employing metallomics methods. An adequate understanding of the biological behavior of Hg and Se in plant is beneficial for sequestration of Hg and Se in soil-plant systems with high Hg and Se contamination. It can also provide a molecular mechanistic basis for Se supplementation in Se-deficient areas. Here, the key developments in current understanding of Hg and Se interactions in plants are reviewed. The metabolism and antagonism of Hg and Se in various plants, as well as the advanced analytical methods commonly used in this field, are summarized and discussed. As suggested, plant Hg and Se uptake, metabolism, and antagonism can be taken into account for detoxification and remediation strategies for the reduction of Hg and Se in the food chain.
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Affiliation(s)
- Xu Bai
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS), Beijing, 100049, China
| | - Yunyun Li
- College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Xujun Liang
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, 510632, China
| | - Hong Li
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS), Beijing, 100049, China
| | - Jiating Zhao
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS), Beijing, 100049, China.
| | - Yu-Feng Li
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS), Beijing, 100049, China
| | - Yuxi Gao
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS), Beijing, 100049, China
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Zhou XB, Li YY. Effect of iron plaque and selenium on mercury uptake and translocation in rice seedlings grown in solution culture. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:13795-13803. [PMID: 30173387 DOI: 10.1007/s11356-018-3066-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 08/27/2018] [Indexed: 05/09/2023]
Abstract
A hydroponics experiment was conducted to investigate the effect of iron plaque on root surfaces and selenium (Se) on the uptake and transfer of mercury (Hg) in rice seedlings by adding in the EDTA-Fe (0, 10, 30, 50, 70 mg Fe l-1) into the solution to produce a different amount of iron plaque outside rice root. After 24 h, the red-brown iron plaque was formed on the root surface, and the amount of iron plaques was positively correlated with the amount of Fe in the solution. The iron plaque deposited on the root surface has a strong adsorption effect on the inorganic Hg. The addition of Se could promote the adsorption of Hg2+ on the iron plaque of rice, and the introduction of Se could increase the adsorption capacity of Hg on iron plaque on average by 1.42 times. The Hg was extracted by DCB (Dithionite-citrate-bicarbonate) up to between 66.2 and 67.8% of the total Hg when the roots with iron plaque (Fe70) were incubated with the combination of 5 μmol L-1 of HgCl2 and 5 μmol L-1 of Na2SeO3 for an hour. After 3 days, the content of Hg in the iron plaque decreased to 6.3-33.9%, indicating that part of the inorganic Hg adsorbed by the iron plaque could be reabsorbed and used. Besides that, the iron plaque allowed the Hg to stay longer in the iron plaque, which hindered the transfer of Hg to the shoot significantly. Hg adsorbed in the iron plaque can be desorbed by low-molecular-weight organic acids, which was equivalent to desorption of Hg from ferric hydroxide oxides. Hg adsorbed on the iron plaque can be moved back to the rest of the plant. These results suggest that the iron plaque and Se in the root surface might play a role as "physical buffer" in the absorption and transfer of Hg.
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Affiliation(s)
- Xin Bin Zhou
- College of Resources and Environment, Southwest University, Chongqing, 400715, People's Republic of China.
| | - Ying Ying Li
- College of Resources and Environment, Southwest University, Chongqing, 400715, People's Republic of China
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Lazareva EV, Myagkaya IN, Kirichenko IS, Gustaytis MA, Zhmodik SM. Interaction of natural organic matter with acid mine drainage: In-situ accumulation of elements. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:468-483. [PMID: 30640114 DOI: 10.1016/j.scitotenv.2018.12.467] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/30/2018] [Accepted: 12/30/2018] [Indexed: 06/09/2023]
Abstract
Natural organic matter (NOM) within the dispersion train of Novo-Ursk tailings (Salair Ridge, Kemerovo region, Russia) is composed of remnant sedge peat mounds and is located either on the surface or is buried under cyanide wastes. The organic material interacts with AMD and with the wastes, which leaves imprint on its composition. This interaction produces geochemical anomalies (g/t: 1582 Cu, 41,300 Zn, 6060 Se, 11,700 Hg, 114-155 Au, 534 Ag, 416 I). The contents of elements depend on Fe in three groups of NOM samples that contain <10 wt% Fe (group I), 10-22 wt% Fe (group II), and >22 wt% Fe (group III). NOM with higher Fe enrichment contains less Cu, Zn, Se, Hg, Ag and I, as well as Cd, Ba, Sr and Rb, Y, Zr, Nb, Mo, Sn, Sb, and Te but more As. Yet, gold may reach high concentrations in NOM with any Fe contents. Accumulation of elements by NOM during its prolonged interaction with wastes and AMD is maintained by physical, chemical, biochemical, and mineralogical processes. They are, respectively, migration of waters controlled by permeability of material in the dispersion train depending on its grain sizes and by AMD flow direction; oxidative dissolution of sulfides, complexing, and adsorption on organic matter and Fe(III) hydroxides; microbial mediation; and secondary mineralization. The chemistry of waters interacting with NOM at the time of its deposition can be reconstructed with regard to several factors, including microbial mediation. Namely, local geochemical anomalies with ultrahigh element concentrations may arise because microorganisms can immobilize Hg to make it less toxic; sulfate-reducing bacteria can maintain precipitation of Zn, Cu, and Cd sulfides; microbial activity can mediate redistribution of elements between clastic and organic materials, etc. The inferred inheritance of AMD geochemical signatures by NOM has implications for the conditions and mechanisms of element accumulation.
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Affiliation(s)
- E V Lazareva
- V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Koptyuga Ave. 3, Novosibirsk 630090, Russia
| | - I N Myagkaya
- V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Koptyuga Ave. 3, Novosibirsk 630090, Russia.
| | - I S Kirichenko
- V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Koptyuga Ave. 3, Novosibirsk 630090, Russia
| | - M A Gustaytis
- V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Koptyuga Ave. 3, Novosibirsk 630090, Russia
| | - S M Zhmodik
- V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Koptyuga Ave. 3, Novosibirsk 630090, Russia
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15
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Papadomichelakis G, Pappas AC, Zoidis E, Danezis G, Georgiou KA, Fegeros K. Blood and hair as non-invasive trace element biological indicators in growing rabbits. WORLD RABBIT SCIENCE 2019. [DOI: 10.4995/wrs.2019.10654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
<p>The suitability of blood and hair as non-invasive tools to monitor trace element contents was studied in 48 Hyla male growing rabbits. Three diets with increasing organic selenium (Se) addition (0.1, 0.5 and 2.5 mg/kg) were used to induce alterations in the concentrations of trace elements vs. an unsupplemented diet. In blood, a linear decrease in Co (P<0.001), Cu (<em>P</em><0.001), Mn (<em>P</em><0.05), Zn (<em>P</em><0.05), Sb (<em>P</em><0.001), As (<em>P</em><0.001), Cr (<em>P</em><0.001), Mo (<em>P</em><0.001), Ni (<em>P</em><0.001) and Cd (<em>P</em><0.001) concentrations with increasing dietary Se was observed. In hair, a cubic effect of dietary Se on Co (<em>P</em><0.01), Cu (<em>P</em><0.05), Mn (<em>P</em><0.001), Pb (<em>P</em><0.05), Mo (<em>P</em><0.05) and Cd (<em>P</em><0.05) concentrations was found, while As, Cr and Ni concentrations decreased linearly (<em>P</em><0.01, <em>P</em><0.01 and <em>P</em><0.001, respectively) with increasing dietary Se. Selenium was negatively correlated to Sb, As, Cr, Mo, Ni and Cd, (P<0.001) in blood, and to As (<em>P</em><0.05), Cr, Ni (<em>P</em><0.01) and Pb (P<0.05) in hair. The contents of Se, As, Cr and Ni in blood were highly correlated (<em>P</em><0.001) to those in hair. Blood appeared to be more sensitive than hair in detecting small changes in the trace element profile in rabbits, as was indicated by the discriminant analysis. In conclusion, blood and hair can be suitable biological indicators of essential, toxic and potentially toxic trace element status in rabbits, particularly when used complementarily.</p>
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Gálvez F, López-Alonso M, Herrero-Latorre C, Miranda M, Franco D, Lorenzo J. Chemometric characterization of the trace element profile of raw meat from Rubia Gallega x Holstein Friesian calves from an intensive system. Meat Sci 2019; 149:63-69. [DOI: 10.1016/j.meatsci.2018.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/28/2018] [Accepted: 11/13/2018] [Indexed: 11/30/2022]
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17
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Tran TAT, Dinh QT, Cui Z, Huang J, Wang D, Wei T, Liang D, Sun X, Ning P. Comparing the influence of selenite (Se 4+) and selenate (Se 6+) on the inhibition of the mercury (Hg) phytotoxicity to pak choi. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:897-904. [PMID: 28968942 DOI: 10.1016/j.ecoenv.2017.09.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/18/2017] [Accepted: 09/20/2017] [Indexed: 05/09/2023]
Abstract
Selenite (Se (IV)) and selenate (Se (IV)) have recently been demonstrated to be equally effective in inhibiting mercury (Hg) phytotoxicity to plants. This assertion is still unclear. In this study, we aimed to explore the potential effects of Se species (Se4+ and Se6+) on the inhibition of the mercury (Hg) bioavailability to pak choi in dry land. Pot experiments with exposure to different dosages of mercuric chloride (HgCl2) and selenite (Na2SeO3) or selenate (Na2SeO4) were treated. To compare the influence of Se (IV) and Se (VI) on the bioaccumulation and bioavailability of Hg, the levels of total Hg in different pak choi (Brassica chinensis L.) tissues (roots and shoots) and the distribution changes of Hg fractions in soil before planting and after harvest were determined as well as the Hg IR values in soils (relative binding intensity) were analyzed. Results showed that application Se (IV) reduced the concentrations of Hg in pak choi roots more than Se (VI). Hg concentrations were also decreased in pak choi shoots in Se (IV) treatments, while which notably increased in Se (VI) treatments. Thus, Se (IV) plays a more important role than Se (VI) in limiting the absorption and bioaccumulation of Hg in pak choi. Moreover, this inhibition may only significantly occur when Se (IV) is at an appropriate level (2.5mg/kg). In addition, the good correlations between the proportions of mobile Hg fractions (soluble and exchangeable fractions), IR values with the Hg concentrations in plants were observed. This affirmed the importance of the Hg fractions transformation and the IR indicator of Hg in the assessment of their bioavailability. Our findings regarding the importance of Se (IV) influence in reducing Hg bioaccumulation not only provided the correct appraisal about the effect of Se species on the inhibition of the Hg phytotoxicity to pak choi in dry land, but also be a good reference for selecting Se fertilizer forms (Se4+ or Se6+).
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Affiliation(s)
- Thi Anh Thu Tran
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Quang Toan Dinh
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zeiwei Cui
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jie Huang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Dan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tianjiao Wei
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Dongli Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China.
| | - Xin Sun
- Collaborative Innovation Center of Western Typical Industry Environmental Pollution Control, Kunming 650500, China
| | - Ping Ning
- Collaborative Innovation Center of Western Typical Industry Environmental Pollution Control, Kunming 650500, China.
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Tang W, Dang F, Evans D, Zhong H, Xiao L. Understanding reduced inorganic mercury accumulation in rice following selenium application: Selenium application routes, speciation and doses. CHEMOSPHERE 2017; 169:369-376. [PMID: 27886539 DOI: 10.1016/j.chemosphere.2016.11.087] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 11/04/2016] [Accepted: 11/15/2016] [Indexed: 05/09/2023]
Abstract
Selenium (Se) has recently been demonstrated to reduce inorganic mercury (IHg) accumulation in rice plants, while its mechanism is far from clear. Here, we aimed at exploring the potential effects of Se application routes (soil or foliar application with Se), speciation (selenite and selenate), and doses on IHg-Se antagonistic interactions in soil-rice systems. Results of our pot experiments indicated that soil application but not foliar application could evidently reduce tissue IHg concentrations (root: 0-48%, straw: 15-58%, and brown rice: 26-74%), although both application routes resulted in comparable Se accumulation in aboveground tissues. Meanwhile, IHg distribution in root generally increased with amended Se doses in soil, suggesting antagonistic interactions between IHg and Se in root. These results provided initial evidence that IHg-Se interactions in the rhizosphere (i.e., soil or rice root), instead of those in the aboveground tissues, could probably be more responsible for the reduced IHg bioaccumulation following Se application. Furthermore, Se dose rather than Se speciation was found to be more important in controlling IHg accumulation in rice. Our findings regarding the importance of IHg-Se interactions in the rhizosphere, together with the systematic investigation of key factors affecting IHg-Se antagonism and IHg bioaccumulation, advance our understanding of Hg dynamics in soil-rice systems.
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Affiliation(s)
- Wenli Tang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
| | - Fei Dang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China.
| | - Douglas Evans
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China; Environmental and Resource Studies Program (ERS), Trent University, Peterborough, Ontario, Canada.
| | - Huan Zhong
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China; Environmental and Life Sciences Program (EnLS), Trent University, Peterborough, Ontario, Canada.
| | - Lin Xiao
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
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Wu Z, Yin X, Bañuelos GS, Lin ZQ, Liu Y, Li M, Yuan L. Indications of Selenium Protection against Cadmium and Lead Toxicity in Oilseed Rape ( Brassica napus L.). FRONTIERS IN PLANT SCIENCE 2016; 7:1875. [PMID: 28018407 PMCID: PMC5156728 DOI: 10.3389/fpls.2016.01875] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 11/28/2016] [Indexed: 05/03/2023]
Abstract
The present study investigated the beneficial role of selenium (Se) in protecting oilseed rape (Brassica napus L.) plants from cadmium (Cd+2) and lead (Pb+2) toxicity. Exogenous Se markedly reduced Cd and Pb concentration in both roots and shoots. Supplementation of the medium with Se (5, 10, and 15 mg kg-1) alleviated the negative effect of Cd and Pb on growth and led to a decrease in oxidative damages caused by Cd and Pb. Furthermore, Se-enhanced superoxide free radicals ([Formula: see text]), hydrogen peroxide (H2O2), and lipid peroxidation, as indicated by malondialdehyde accumulation, but decreased superoxide dismutase and glutathione peroxidase activities. Meanwhile, the presence of Cd and Pb in the medium affected Se speciation in shoots. The results suggest that Se could alleviate Cd and Pb toxicity by preventing oxidative stress in oilseed rape plant.
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Affiliation(s)
- Zhilin Wu
- Key Laboratory of Agri-Food Safety of Anhui Province, Scientific Observing and Experimental Station of Agricultural Environment of the Ministry of Agriculture – Laboratory of Quality and Safty Risk Assessment for Agricultural Products on Storage and Preservation of the Ministry of Agriculture, School of Plant Protection – School of Resources and Environment, Anhui Agricultural UniversityHefei, China
- School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China
- Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China
| | - Xuebin Yin
- School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China
- Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China
- Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China
| | - Gary S. Bañuelos
- San Joaquin Valley Agricultural Sciences Center, United States Department of Agriculture – Agricultural Research Service, ParlierCA, USA
| | - Zhi-Qing Lin
- Environmental Sciences Program and Department of Biological Sciences, Southern Illinois University Edwardsville, EdwardsvilleIL, USA
| | - Ying Liu
- School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China
- Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China
- Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China
| | - Miao Li
- Key Laboratory of Agri-Food Safety of Anhui Province, Scientific Observing and Experimental Station of Agricultural Environment of the Ministry of Agriculture – Laboratory of Quality and Safty Risk Assessment for Agricultural Products on Storage and Preservation of the Ministry of Agriculture, School of Plant Protection – School of Resources and Environment, Anhui Agricultural UniversityHefei, China
- Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China
- The Northwest of Anhui Province Station for Integrative Agriculture, Research Institute for New Rural Development, Anhui Agricultural UniversityHefei, China
| | - Linxi Yuan
- School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China
- Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China
- Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China
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Aborode FA, Raab A, Voigt M, Costa LM, Krupp EM, Feldmann J. The importance of glutathione and phytochelatins on the selenite and arsenate detoxification in Arabidopsis thaliana. J Environ Sci (China) 2016; 49:150-161. [PMID: 28007170 DOI: 10.1016/j.jes.2016.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/08/2016] [Accepted: 08/13/2016] [Indexed: 05/24/2023]
Abstract
We investigated the role of glutathione (GSH) and phytochelatins (PCs) on the detoxification of selenite using Arabidopsis thaliana. The wild-type (WT) of Arabidopsis thaliana and its mutants (glutathione deficient Cad 2-1 and phytochelatins deficient Cad 1-3) were separately exposed to varying concentrations of selenite and arsenate and jointly to both toxicants to determine their sensitivities. The results of the study revealed that, the mutants were about 20-fold more sensitive to arsenate than the WT, an indication that the GSH and PCs affect arsenate detoxification. On the contrary, the WT and both mutants showed a similar level of sensitivity to selenite, an indication that the GSH and PCs do not significantly affect selenite detoxification. However, the WT is about 8 times more sensitive to selenite than to arsenate, and the mutants were more resistant to selenite than arsenate by a factor of 2. This could not be explained by the accumulation of both elements in roots and shoots in exposure experiments. The co-exposure of the WT indicates a synergistic effect with regards to toxicity since selenite did not induce PCs but arsenic and selenium compete in their PC binding as revealed by speciation analysis of the root extracts using HPLC-ICP-MS/ESI-MS. In the absence of PCs an antagonistic effect has been detected which might suggest indirectly that the formation of Se glutathione complex prevent the formation of detrimental selenopeptides. This study, therefore, revealed that PC and GSH have only a subordinate role in the detoxification of selenite.
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Affiliation(s)
- Fatai Adigun Aborode
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
| | - Andrea Raab
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Matthias Voigt
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Leticia Malta Costa
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK; Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG CEP: 31270-901, Brazil
| | - Eva M Krupp
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
| | - Joerg Feldmann
- Trace Element Speciation Laboratory, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK.
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Wan Y, Yu Y, Wang Q, Qiao Y, Li H. Cadmium uptake dynamics and translocation in rice seedling: Influence of different forms of selenium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 133:127-34. [PMID: 27434423 DOI: 10.1016/j.ecoenv.2016.07.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/01/2016] [Accepted: 07/04/2016] [Indexed: 05/03/2023]
Abstract
Selenium (Se) can alleviate the toxicity of cadmium (Cd), but little is known about its mechanism in Cd uptake and translocation in plants. We investigated the effects of exogenous selenite, selenate, and selenomethionine (SeMet) on Cd uptake and translocation within rice (Oryza sativa L., Zhunliangyou 608) seedlings, and the concentration-dependent uptake kinetics of Cd into rice roots (with or without Se) were determined. The effect of the endogenous Se pool on Cd uptake was also investigated. Results of uptake kinetics showed that selenite slightly promoted Cd influx during 1h of exposure, compared with no selenite addition; Vmax of Cd uptake increased by 13.8% in 10μM selenite treatment; while the presence of selenate had no effect on the influx of Cd. When exposed to Cd (5μM) over 20h (with selenite) or 30h (with selenate or SeMet), Se addition (5μM) decreased Cd uptake and root-to-shoot translocation; after 30h selenite, selenate, or SeMet addition decreased Cd uptake by roots by 28.6%, 17.7% or 12.1%, respectively. Besides, as the selenite levels in the treatment solutions (1μMCd) increased (0, 0.1, 1, and 5μM, Se), Cd uptake and translocation were both significantly reduced, while the inhibitive effect was more significant at lower levels of selenate. Pretreatment of selenite or selenate (5μM) also decreased Cd uptake by 24.9% or 15.7%, and reduced the root-to-shoot transfer factor by 41.4% or 36.2% after 144h of subjection to Cd (5μM), respectively. The presence of selenite decreased Cd content more effectively than did selenate. Our results demonstrated that Se can effectively reduce the Cd translocation from roots to shoots in rice seedlings.
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Affiliation(s)
- Yanan Wan
- Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Yao Yu
- Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Qi Wang
- Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Yuhui Qiao
- Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Huafen Li
- Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China.
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Bui MPN, Brockgreitens J, Ahmed S, Abbas A. Dual detection of nitrate and mercury in water using disposable electrochemical sensors. Biosens Bioelectron 2016; 85:280-286. [PMID: 27183277 DOI: 10.1016/j.bios.2016.05.017] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/23/2016] [Accepted: 05/05/2016] [Indexed: 12/22/2022]
Abstract
Here we report a disposable, cost effective electrochemical paper-based sensor for the detection of both nitrate and mercury ions in lake water and contaminated agricultural runoff. Disposable carbon paper electrodes were functionalized with selenium particles (SePs) and gold nanoparticles (AuNPs). The AuNPs served as a catalyst for the reduction of nitrate ions using differential pulse voltammetry techniques. The AuNPs also served as a nucleation sites for mercury ions. The SePs further reinforced this mercury ion nucleation due to their high binding affinity to mercury. Differential pulse stripping voltammetry techniques were used to further enhance mercury ion accumulation on the modified electrode. The fabricated electrode was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electrochemistry techniques. The obtained results show that the PEG-SH/SePs/AuNPs modified carbon paper electrode has a dual functionality in that it can detect both nitrate and mercury ions without any interference. The modified carbon paper electrode has improved the analytical sensitivity of nitrate and mercury ions with limits of detection of 8.6µM and 1.0ppb, respectively. Finally, the modified electrode was used to measure nitrate and mercury in lake water samples.
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Affiliation(s)
- Minh-Phuong N Bui
- Department of Bioproducts and Biosystems Engineering, University of Minnesota Twin Cities, Saint Paul, MN 55108, United States
| | - John Brockgreitens
- Department of Bioproducts and Biosystems Engineering, University of Minnesota Twin Cities, Saint Paul, MN 55108, United States
| | - Snober Ahmed
- Department of Bioproducts and Biosystems Engineering, University of Minnesota Twin Cities, Saint Paul, MN 55108, United States
| | - Abdennour Abbas
- Department of Bioproducts and Biosystems Engineering, University of Minnesota Twin Cities, Saint Paul, MN 55108, United States.
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Kroflič A, Germ M, Mechora Š, Stibilj V. Selenium and its compounds in aquatic plant Veronica anagallis-aquatica. CHEMOSPHERE 2016; 151:296-302. [PMID: 26946117 DOI: 10.1016/j.chemosphere.2015.12.103] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 11/20/2015] [Accepted: 12/23/2015] [Indexed: 06/05/2023]
Abstract
The uptake, distribution and determination of Se and its compounds in macrophyte Veronica anagallis-aquatica were investigated. V. anagallis-aquatica and sediments were sampled in years 2009-2011 and in 2013 in three Slovenian watercourses flowing through an agricultural area, where addition of Se in feedstuffs has been performed for about 25 years. Se content in sediments were up to 0.86 μg g(-1) and in whole plant varied from 0.186 to 1.535 μg g(-1), all on dry weight basis. Se content were measured also in different plant parts; highest content were found in roots and lowest in stems. Separation of extractable Se compounds was performed by ion exchange chromatography and for on-line detection inductively coupled plasma-mass spectrometry was used. The results showed that only approximately 24% of Se in the macrophyte was extracted using enzyme Protease XIV. Extractable Se in plant parts varied from 10.5% in roots to 29.6% in leaves. Identification of Se(IV) and Se(VI) was achieved but no Se-amino acids were detected even at highest Se content. According to our results, we assume that 25 years of Se addition in feedstuff shows minimal impact on Se content in the selected agricultural area.
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Affiliation(s)
- Ana Kroflič
- "Jožef Stefan" Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Mateja Germ
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Špela Mechora
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Vekoslava Stibilj
- "Jožef Stefan" Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova cesta 39, SI-1000 Ljubljana, Slovenia.
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Wang Y, Dang F, Zhong H, Wei Z, Li P. Effects of sulfate and selenite on mercury methylation in a mercury-contaminated rice paddy soil under anoxic conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:4602-4608. [PMID: 26520099 DOI: 10.1007/s11356-015-5696-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/26/2015] [Indexed: 06/05/2023]
Abstract
Biogeochemical cycling of sulfur and selenium (Se) could play an important role in methylmercury (MeHg) dynamics in soil, while their potential effects on MeHg production in rice paddy soil are less understood. The main objective of this study was to explore the effects of sulfate and selenite on net MeHg production in contaminated rice paddy soil, characterized with massive MeHg production and thus MeHg accumulation in rice. A series of microcosm incubation experiments were conducted using a contaminated paddy soil amended with sulfate and/or selenite, in which sulfate-reducing bacteria were mainly responsible for MeHg production. Our results demonstrated that sulfate addition reduced solid and dissolved MeHg levels in soils by ≤18 and ≤25 %, respectively. Compared to sulfate, selenite was more effective in inhibiting net MeHg production, and the inhibitory effect depended largely on amended selenite doses. Moreover, sulfate input played a dual role in affecting Hg-Se interactions in soil, which could be explained by the dynamics of sulfate under anoxic conditions. Therefore, the effects of sulfate and selenium input should be carefully considered when assessing risk of Hg in anoxic environments (e.g., rice paddy field and wetland).
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Affiliation(s)
- Yongjie Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Fei Dang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Huan Zhong
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China.
- Environmental and Life Sciences Program (EnLS), Trent University, Peterborough, Ontario, Canada.
| | - Zhongbo Wei
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Ping Li
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, People's Republic of China
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Wang Y, Dang F, Evans RD, Zhong H, Zhao J, Zhou D. Mechanistic understanding of MeHg-Se antagonism in soil-rice systems: the key role of antagonism in soil. Sci Rep 2016; 6:19477. [PMID: 26778218 PMCID: PMC4726087 DOI: 10.1038/srep19477] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/09/2015] [Indexed: 11/09/2022] Open
Abstract
Methylmercury (MeHg) accumulation in rice has great implications for human health. Here, effects of selenium (Se) on MeHg availability to rice are explored by growing rice under soil or foliar fertilization with Se. Results indicate that soil amendment with Se could reduce MeHg levels in soil and grain (maximally 73%). In contrast, foliar fertilization with Se enhanced plant Se levels (3–12 folds) without affecting grain MeHg concentrations. This evidence, along with the distinct distribution of MeHg and Se within the plant, demonstrate for the first time that Se-induced reduction in soil MeHg levels (i.e., MeHg-Se antagonism in soil) rather than MeHg-Se interactions within the plant might be the key process triggering the decreased grain MeHg levels under Se amendment. The reduction in soil MeHg concentrations could be mainly attributed to the formation of Hg-Se complexes (detected by TEM-EDX and XANES) and thus reduced microbial MeHg production. Moreover, selenite and selenate were equally effective in reducing soil MeHg concentrations, possibly because of rapid changes in Se speciation. The dominant role of Se-induced reduction in soil MeHg levels, which has been largely underestimated previously, together with the possible mechanisms advance our mechanistic understanding about MeHg dynamics in soil-rice systems.
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Affiliation(s)
- Yongjie Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China
| | - Fei Dang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P.R. China
| | - R Douglas Evans
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China.,Environmental and Resource Studies Program (ERS), Trent University, Peterborough, Ontario, Canada
| | - Huan Zhong
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China.,Environmental and Life Sciences Program (EnLS), Trent University, Peterborough, Ontario, Canada
| | - Jiating Zhao
- Key Lab for Biomedical Effects of Nanomaterial and Nanosafety, Laboratory of Metallomics and Metalloproteomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Dongmei Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P.R. China
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26
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Sieprawska A, Kornaś A, Filek M. Involvement of Selenium in Protective Mechanisms of Plants under Environmental Stress Conditions – Review. ACTA ACUST UNITED AC 2015. [DOI: 10.1515/abcsb-2015-0014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn recent years there has been growing interest in selenium (Se) as an important micronutrient not only for animals and humans but also for plants. In particular, its protective effect in plants exposed to stress conditions has been suggested. In spite of many studies, the mechanism of Se action is not fully understood. In this review, possible ways of interaction of Se with stress factors leading to optimal growth and development of plants are presented. As the majority of experiments have focused on the effects of Se application under stress conditions induced by heavy metals, special attention is paid to the results obtained in such studies. Changes of physiological and biochemical properties of plant cells, with particular regard to the influence of Se on the activation of enzymatic and non-enzymatic antioxidants under this stress, are summarized. Experiments in which Se was used in some other environmental stresses (drought, UV, cold and high temperature) are also cited. On the basis of the presented literature it is suggested that a positive effect of Se depends on both its doses and on chosen plant genotypes and is mainly connected with activation of antioxidative defense in plant cells.
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Zhao J, Li Y, Li Y, Gao Y, Li B, Hu Y, Zhao Y, Chai Z. Selenium modulates mercury uptake and distribution in rice (Oryza sativa L.), in correlation with mercury species and exposure level. Metallomics 2014; 6:1951-7. [DOI: 10.1039/c4mt00170b] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang X, Tam NFY, Fu S, Ametkhan A, Ouyang Y, Ye Z. Selenium addition alters mercury uptake, bioavailability in the rhizosphere and root anatomy of rice (Oryza sativa). ANNALS OF BOTANY 2014; 114:271-8. [PMID: 24948669 PMCID: PMC4111379 DOI: 10.1093/aob/mcu117] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND AND AIMS Mercury (Hg) is an extremely toxic pollutant, especially in the form of methylmercury (MeHg), whereas selenium (Se) is an essential trace element in the human diet. This study aimed to ascertain whether addition of Se can produce rice with enriched Se and lowered Hg content when growing in Hg-contaminated paddy fields and, if so, to determine the possible mechanisms behind these effects. METHODS Two cultivars of rice (Oryza sativa, japonica and indica) were grown in either hydroponic solutions or soil rhizobags with different Se and Hg treatments. Concentrations of total Hg, MeHg and Se were determined in the roots, shoots and brown rice, together with Hg uptake kinetics and Hg bioavailability in the soil. Root anatonmy was also studied. KEY RESULTS The high Se treatment (5 μg g(-1)) significantly increased brown rice yield by 48 % and total Se content by 2·8-fold, and decreased total Hg and MeHg by 47 and 55 %, respectively, compared with the control treatments. The high Se treatment also markedly reduced 'water-soluble' Hg and MeHg concentrations in the rhizosphere soil, decreased the uptake capacity of Hg by roots and enhanced the development of apoplastic barriers in the root endodermis. CONCLUSIONS Addition of Se to Hg-contaminated soil can help produce brown rice that is simultaneously enriched in Se and contains less total Hg and MeHg. The lowered accumulation of total Hg and MeHg appears to be the result of reduced bioavailability of Hg and production of MeHg in the rhizosphere, suppression of uptake of Hg into the root cells and an enhancement of the development of apoplastic barriers in the endodermis of the roots.
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Affiliation(s)
- Xun Wang
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Nora Fung-Yee Tam
- Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, PR China State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong SAR, PR China
| | - Shi Fu
- Fine Arts College, Sichuan Normal University, Chengdu 610110, PR China
| | - Aray Ametkhan
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Yun Ouyang
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Zhihong Ye
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
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30
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Saidi I, Chtourou Y, Djebali W. Selenium alleviates cadmium toxicity by preventing oxidative stress in sunflower (Helianthus annuus) seedlings. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:85-91. [PMID: 24484961 DOI: 10.1016/j.jplph.2013.09.024] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Revised: 09/17/2013] [Accepted: 09/22/2013] [Indexed: 05/20/2023]
Abstract
The present study investigated the possible mediatory role of selenium (Se) in protecting plants from cadmium (Cd) toxicity. The exposure of sunflower seedlings to 20μM Cd inhibited biomass production, decreased chlorophyll and carotenoid concentrations and strongly increased accumulation of Cd in both roots and shoots. Similarly, Cd enhanced hydrogen peroxides content and lipid peroxidation as indicated by malondialdehyde accumulation. Pre-soaking seeds with Se (5, 10 and 20μM) alleviated the negative effect of Cd on growth and led to a decrease in oxidative injuries caused by Cd. Furthermore, Se enhanced the activities of catalase, ascorbate peroxidase and glutathione reductase, but lowered that of superoxide dismutase and guaiacol peroxidase. As important antioxidants, ascorbate and glutathione contents in sunflower leaves exposed to Cd were significantly decreased by Se treatment. The data suggest that the beneficial effect of Se during an earlier growth period could be related to avoidance of cumulative damage upon exposure to Cd, thus reducing the negative consequences of oxidative stress caused by heavy metal toxicity.
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Affiliation(s)
- Issam Saidi
- Unité de recherche de Physiologie et Biochimie de la Réponse des Plantes aux Contraintes Abiotiques, Tunisia.
| | - Yacine Chtourou
- Unité de recherche de Physiologie et Biochimie de la Réponse des Plantes aux Contraintes Abiotiques, Tunisia
| | - Wahbi Djebali
- Unité de recherche de Physiologie et Biochimie de la Réponse des Plantes aux Contraintes Abiotiques, Tunisia
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31
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Zhang H. Advances in Research on the Mechanisms of Selenium–Mercury Interactions and Health Risk Assessment. SPRINGER THESES 2014. [DOI: 10.1007/978-3-642-54919-9_2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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32
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Zhao J, Gao Y, Li YF, Hu Y, Peng X, Dong Y, Li B, Chen C, Chai Z. Selenium inhibits the phytotoxicity of mercury in garlic (Allium sativum). ENVIRONMENTAL RESEARCH 2013; 125:75-81. [PMID: 23561332 DOI: 10.1016/j.envres.2013.01.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 10/29/2012] [Accepted: 01/31/2013] [Indexed: 06/02/2023]
Abstract
To investigate the influence of selenium on mercury phytotoxicity, the levels of selenium and mercury were analyzed with inductively coupled plasma-mass spectrometry (ICP-MS) in garlic tissues upon exposure to different dosages of inorganic mercury (Hg(2+)) and selenite (SeO3(2-)) or selenate (SeO4(2-)). The distributions of selenium and mercury were examined with micro-synchrotron radiation X-ray fluorescence (μ-SRXRF), and the mercury speciation was investigated with micro-X-ray absorption near edge structure (μ-XANES). The results show that Se at higher exposure levels (>1mg/L of SeO3(2-) or SeO4(2-)) would significantly inhibit the absorption and transportation of Hg when Hg(2+) levels are higher than 1mg/L in culture media. SeO3(2-) and SeO4(2-) were found to be equally effective in reducing Hg accumulation in garlic. The inhibition of Hg uptake by Se correlates well with the influence of Se on Hg phytotoxicity as indicated by the growth inhibition factor. Elemental imaging using μ-SRXRF also shows that Se could inhibit the accumulation and translocation of Hg in garlic. μ-XANES analysis shows that Hg is mainly present in the forms of Hg-S bonding as Hg(GSH)2 and Hg(Met)2. Se exposure elicited decrease of Hg-S bonding in the form of Hg(GSH)2, together with Se-mediated alteration of Hg absorption, transportation and accumulation, may account for attenuated Hg phytotoxicity by Se in garlic.
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Affiliation(s)
- Jiating Zhao
- CAS Key Laboratory of Nuclear Analytical Techniques, Key Lab for Biomedical Effects of Nanomaterial and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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Feng R, Wei C, Tu S. The roles of selenium in protecting plants against abiotic stresses. ENVIRONMENTAL AND EXPERIMENTAL BOTANY 2013. [PMID: 0 DOI: 10.1016/j.envexpbot.2012.09.002] [Citation(s) in RCA: 309] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
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34
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Zhao J, Hu Y, Gao Y, Li Y, Li B, Dong Y, Chai Z. Mercury modulates selenium activity via altering its accumulation and speciation in garlic (Allium sativum). Metallomics 2013; 5:896-903. [DOI: 10.1039/c3mt20273a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Zhang H, Feng X, Zhu J, Sapkota A, Meng B, Yao H, Qin H, Larssen T. Selenium in soil inhibits mercury uptake and translocation in rice (Oryza sativa L.). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:10040-10046. [PMID: 22916794 DOI: 10.1021/es302245r] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A great number of studies have confirmed that mercury-selenium (Hg-Se) antagonism is a widespread phenomenon in microorganisms, fish, poultry, humans, and other mammals. However, by comparison, little attention has been paid to plants. To investigate the influence of Se on the uptake and translocation of methylHg/inorganic Hg (MeHg/IHg) in the rice-soil system, we determined the levels of Se, IHg, and MeHg in different parts of rice plants (including the root, stem, leaf, husk, and grain (brown rice)) and corresponding soils of root zones collected from a Hg mined area, where Hg and Se co-occur due to historic Hg mining and retorting activities. The results showed that, in general, the Se levels were inversely related to the levels of both IHg and MeHg in the grains. In addition, a consistent reduction in translocation of both IHg and MeHg in the aerial shoots (i.e., the stem, leaf, husk, and grain) with increasing Se levels in the soils was observed. Furthermore, the Se levels were positively correlated with the IHg levels in the soils and the roots. These results suggest that Se may play an important role in limiting the bioaccessibility, absorption, and translocation/bioaccumulation of both IHg and MeHg in the aerial rice plant, which may be related to the formation of an Hg-Se insoluble complex in the rhizospheres and/or roots.
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Affiliation(s)
- Hua Zhang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
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36
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McNear DH, Afton SE, Caruso JA. Exploring the structural basis for selenium/mercury antagonism in Allium fistulosum. Metallomics 2012; 4:267-76. [DOI: 10.1039/c2mt00158f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Pappas AC, Zoidis E, Georgiou CA, Demiris N, Surai PF, Fegeros K. Influence of organic selenium supplementation on the accumulation of toxic and essential trace elements involved in the antioxidant system of chicken. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 28:446-54. [DOI: 10.1080/19440049.2010.549152] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Yang DY, Chen YW, Belzile N. Evidences of non-reactive mercury-selenium compounds generated from cultures of Pseudomonas fluorescens. THE SCIENCE OF THE TOTAL ENVIRONMENT 2011; 409:1697-1703. [PMID: 21316739 DOI: 10.1016/j.scitotenv.2011.01.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Revised: 01/06/2011] [Accepted: 01/18/2011] [Indexed: 05/30/2023]
Abstract
This work was designed to determine chemically inert mercury-selenium (Hg-Se) compounds formed in a culture of Pseudomonas fluorescens exposed to Hg(2+) and Se(IV) (selenite). To isolate these compounds, different digestion methods were studied and sodium dodecyl sulfate (SDS) lysis was selected. The Hg(0) and non-reactive Hg were determined in two series of cultures containing 0.0-6.00 μg L(-1) Se(IV) (0.0-76.0 μmol L(-1)) in combination with low 5.00 μg L(-1) (0.025 μmol L(-1)) or high 100 μg L(-1) (0.500 μmol L(-1)) Hg(2+). It was found that Hg(0) formed in the culture decreased with the increase of initial Se(IV), while the non-reactive Hg increased with the Se(IV). In cultures with low initial [Hg(2+)], a median Se(IV) (2.0 μg L(-1) or 25.3 μmol L(-1)) resulted in about 70% of the added Hg(2+) sequestered as non-reactive Hg, and in culture with high initial Hg(2+), about 40% was sequestered. P. fluorescens was proved to be indispensible for the formation of the non-reactive Hg-Se compounds. The Hg:Se molar ratio in the non-reactive Hg-Se compounds was close to 1, suggesting the existence of mercuric selenide in cells. Mechanisms for the formation of the non-reactive Hg-Se compounds are proposed.
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Affiliation(s)
- Dan-Yi Yang
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada P3E 2C6
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Yathavakilla SKV, Caruso JA. A study of Se-Hg antagonism in Glycine max (soybean) roots by size exclusion and reversed phase HPLC-ICPMS. Anal Bioanal Chem 2007; 389:715-23. [PMID: 17653702 DOI: 10.1007/s00216-007-1458-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 06/20/2007] [Accepted: 06/21/2007] [Indexed: 11/24/2022]
Abstract
An attempt was made to study selenium (Se) and mercury (Hg) interactions in plants, specifically soybean (Glycine max), by inductively coupled plasma mass spectrometric detection. Greenhouse-cultivated plants were subjected to treatment with different regimens of Se and Hg and analyzed for their metabolized species in roots, stems, leaves, pods and beans. Most of the water-soluble Hg was found to be localized in the roots in association with Se in a high molecular weight entity, as identified by size exclusion chromatography. This entity was also extracted in protein specific isolate, but it resisted enzymatic breakdown. Complete breakdown of this high molecular weight species was accomplished by acid hydrolysis. Optimization of the conditions for acid hydrolysis is discussed. Hg and Se species found in root extract were studied by ion-pairing chromatography. In a sub-study, the Se distribution pattern was found to be unaffected by the presence of Hg, but the amount of Se assimilated was found to be higher in plants coexposed to Hg.
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Affiliation(s)
- Santha Ketavarapu V Yathavakilla
- Department of Chemistry, University of Cincinnati/Agilent Technologies, Metallomics Center of the Americas, P.O. Box 210172, Cincinnati, OH 45221, USA
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Meija J, Montes-Bayón M, Caruso JA, Sanz-Medel A. Integrated mass spectrometry in (semi-)metal speciation and its potential in phytochemistry. Trends Analyt Chem 2006. [DOI: 10.1016/j.trac.2005.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Feroci G, Badiello R, Fini A. Interactions between different selenium compounds and zinc, cadmium and mercury. J Trace Elem Med Biol 2005; 18:227-34. [PMID: 15966571 DOI: 10.1016/j.jtemb.2004.09.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In this paper, we present a polarographic study of systems containing different inorganic and organic selenium compounds (sodium selenite, sodium selenate, seleno-methionine and seleno-urea) and metal ions (Zn2+, Cd2+ Hg2+) of the 12th group of elements in the periodic table. While zinc is a trace element known to be essential for plants and animals, cadmium and mercury are exogenous elements and are harmful pollutants that accumulate during aging; selenium is also recognized as an important micronutrient and is sometimes added to the diet. Experiments investigating the interactions were carried out using polarographic techniques in unbuffered systems. The three metal cations originated complexes with different strength and solubility in the presence of selenite anions; in the presence of selenate, polarography was not able to detect formation of complexes with these metal ions, at least under the experimental conditions used: a decrease of Hg2+ ion concentration was observed. Seleno-methionine did not react with Cd2+; in the presence of Zn2+, a soluble complex with a co-ordination number 1 was formed, while, again, the concentration of Hg2+ decreased in the presence of increasing concentrations of the selenium derivative. Seleno-urea did not react with Zn2+, but formed a complex with Cd2+ with limited solubility. Finally, this ligand could not be studied with Hg2+ because of the overlapping of the reduction potentials of both the ligand and the metal cation. Overall equilibrium constants for complex formation (Kf) and the solubility product (Ksp) for poorly soluble species are also reported.
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Affiliation(s)
- Giorgio Feroci
- Institute of Chemical Sciences, University of Bologna, Via S. Donato 15, 40127 Bologna, Italy
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