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Tella M, Legros S, Monteiro ANTR, Forouzandeh A, Penen F, Durosoy S, Doelsch E. Unexpected Cu and Zn speciation patterns in the broiler feed-animal-excreta system revealed by XAS spectroscopy. CHEMOSPHERE 2023; 340:139684. [PMID: 37532201 DOI: 10.1016/j.chemosphere.2023.139684] [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: 04/19/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/04/2023]
Abstract
Trace minerals such as copper (Cu) and zinc (Zn) are animal nutrition supplements necessary for livestock health and breeding performance, yet they also have environmental impacts via animal excretion. Here we investigated changes in Cu and Zn speciation from the feed additive to the broiler excreta stages. The aim of this study was to assess whether different Cu and Zn feed additives induce different Cu and Zn speciation patterns, and to determine the extent to which this speciation is preserved throughout the feed-animal-excreta system. Synchrotron-based X-ray absorption spectroscopy (XAS) was used for this investigation. The principal findings were: (i) in feed, Cu and Zn speciation changed rapidly from the feed additive signature (Cu and Zn oxides or Cu and Zn sulfates) to Cu and Zn organic complexes (Cu phytate and Zn phytate). (ii) in the digestive tract, we showed that Cu and Zn phytate were major Cu and Zn species; Cu sulfide and Zn amorphous phosphate species were detected but remained minor species. (iii) in fresh excreta, Cu sulfide and Zn amorphous phosphate were major species. These results should help to: (i) enhance the design of future research studies comparing different feed additive performances; (ii) assess Cu and Zn bioavailability in the digestive tract; (iii) gain further insight into the fate of Cu and Zn in cultivated soils when poultry manure is used as fertilizer.
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Affiliation(s)
- Marie Tella
- US 49 Analyses, CIRAD, F-34398, Montpellier, France; Analyses, Univ. Montpellier, CIRAD, Montpellier, France
| | - Samuel Legros
- UPR Recyclage et Risque, CIRAD, F-34398, Montpellier, France; Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
| | | | - Asal Forouzandeh
- Animal Nutrition and Welfare Service (SNiBA), Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | | | | | - Emmanuel Doelsch
- UPR Recyclage et Risque, CIRAD, F-34398, Montpellier, France; Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France.
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Nikolić D, Bosnić D, Samardžić J. Silicon in action: Between iron scarcity and excess copper. FRONTIERS IN PLANT SCIENCE 2023; 14:1039053. [PMID: 36818840 PMCID: PMC9935840 DOI: 10.3389/fpls.2023.1039053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Essential micronutrients belonging to the transition metals, such as Fe and Cu, are indispensable for plant growth and stress tolerance; however, when present in excess, they can become potentially dangerous producers of reactive oxygen species. Therefore, their homeostases must be strictly regulated. Both microelement deficiencies and elevated concentrations of heavy metals in the soil are global problems that reduce the nutritional value of crops and seriously affect human health. Silicon, a beneficial element known for its protective properties, has been reported to alleviate the symptoms of Cu toxicity and Fe deficiency stress in plants; however, we are still far from a comprehensive understanding of the underlying molecular mechanisms. Although Si-mediated mitigation of these stresses has been clearly demonstrated for some species, the effects of Si vary depending on plant species, growing conditions and experimental design. In this review, the proposed mechanistic models explaining the effect of Si are summarized and discussed. Iron and copper compete for the common metal transporters and share the same transport routes, hence, inadequate concentration of one element leads to disturbances of another. Silicon is reported to beneficially influence not only the distribution of the element supplied below or above the optimal concentration, but also the distribution of other microelements, as well as their molar ratios. The influence of Si on Cu immobilization and retention in the root, as well as Si-induced Fe remobilization from the source to the sink organs are of vital importance. The changes in cellular Cu and Fe localization are considered to play a crucial role in restoring homeostasis of these microelements. Silicon has been shown to stimulate the accumulation of metal chelators involved in both the mobilization of deficient elements and scavenging excess heavy metals. Research into the mechanisms of the ameliorative effects of Si is valuable for reducing mineral stress in plants and improving the nutritional value of crops. This review aims to provide a thorough and critical overview of the current state of knowledge in this field and to discuss discrepancies in the observed effects of Si and different views on its mode of action.
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Application of Exogenous Silicon for Alleviating Photosynthetic Inhibition in Tomato Seedlings under Low−Calcium Stress. Int J Mol Sci 2022; 23:ijms232113526. [DOI: 10.3390/ijms232113526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
Abstract
To address the low Ca−induced growth inhibition of tomato plants, the mitigation effect of exogenous Si on tomato seedlings under low−Ca stress was investigated using different application methods. We specifically analyzed the effects of root application or foliar spraying of 1 mM Si on growth conditions, leaf photosynthetic properties, stomatal status, chlorophyll content, chlorophyll fluorescence, ATP activity and content, Calvin cycle−related enzymatic activity, and gene expression in tomato seedlings under low vs. adequate calcium conditions. We found that the low−Ca environment significantly affected (reduced) these parameters, resulting in growth limitation. Surprisingly, the application of 1 mM Si significantly increased plant height, stem diameter, and biomass accumulation, protected photosynthetic pigments, improved gas exchange, promoted ATP production, enhanced the activity of Calvin cycle key enzymes and expression of related genes, and ensured efficient photosynthesis to occur in plants under low−Ca conditions. Interestingly, when the same amount of Si was applied, the beneficial effects of Si were more pronounced under low−Ca conditions that under adequate Ca. We speculate that Si might promote the absorption and transport of calcium in plants. The effects of Si also differed depending on the application method; foliar spraying was better in alleviating photosynthetic inhibition in plants under low−Ca stress, whereas root application of Si significantly promoted root growth and development. Enhancing the photosynthetic capacity by foliar Si application is an effective strategy for ameliorating the growth inhibition of plants under low−Ca stress.
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Nast MR, Colares GS, Machado ÊL, Rodrigues LR. Wastewater treatment using bamboos in constructed wetlands: experiences and future perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:67641-67658. [PMID: 35930159 DOI: 10.1007/s11356-022-22304-5] [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: 01/06/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Wastewater treatment using constructed wetlands (CWs) based on natural wetlands constitute a viable alternative with excellent cost and benefit, presenting themselves as efficient technologies in the secondary and tertiary treatment of wastewaters with low implementation, operation, and maintenance costs. The present study aims to evaluate the use of bamboo species, as an alternative to macrophytes, frequently used in CWs, through bibliometric analysis, besides to a review based on case studies. The maps generated by the VOSviewer software and by the analyses of the Web of Science and Scopus databases allowed for a review of typical concepts of CWs, in addition to revealing potential benefits of using bamboos in CWs, such as their hyperaccumulation capacity and bioproduct generation. Other promising aspects were identified, for example the use of bamboo charcoal as a substrate used in subsurface wetlands and the application of ornamental bamboo species for landscape improvements, among other observations. The efficiencies found in six case studies showed values between 89-99.7%, 47.6-99.7%, 58.3-99.9%, and 85.5-99.8% for BOD5, COD, total nitrogen (TN), and total phosphorus (TP), respectively. Despite the promising results, the lack of studies using bamboos in CWs for the treatment of wastewaters limits an assertive statement about the use of this technology, requiring further research, focusing on the morphological functions of bamboos in this treatment with landscape integration and resources recovery.
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Affiliation(s)
- Maurício Reimann Nast
- Graduate in Environmental Engineering, Federal University of Rio Grande Do Sul, Av, Bento Gonçalves, Porto Alegre, RS, 91501-970, Brazil
| | - Gustavo Stolzenberg Colares
- Postgraduate Program in Environmental Technology, University of Santa Cruz Do Sul (UNISC), Avenida Independência, Santa Cruz Do Sul, Rio Grande do Sul, 229396815-900, Brazil.
| | - Ênio Leandro Machado
- Postgraduate Program in Environmental Technology, University of Santa Cruz Do Sul (UNISC), Avenida Independência, Santa Cruz Do Sul, Rio Grande do Sul, 229396815-900, Brazil
| | - Lucia Ribeiro Rodrigues
- Postgraduate Program in Water Resources and Environmental Sanitation, Federal University of Rio Grande Do Sul, Av. Bento Gonçalves, Porto Alegre, RS, 91501-970, Brazil
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Zhao K, Yang Y, Zhang L, Zhang J, Zhou Y, Huang H, Luo S, Luo L. Silicon-based additive on heavy metal remediation in soils: Toxicological effects, remediation techniques, and perspectives. ENVIRONMENTAL RESEARCH 2022; 205:112244. [PMID: 34688645 DOI: 10.1016/j.envres.2021.112244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 09/24/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Chemical fertilizer is gaining increasing attention and has been the center of much research which indicating complex beneficial and harmful effects. Chemical fertilizer might cause some environmental hazards to the biosphere, especially in the agricultural ecosystem. The application of silicon (Si) fertilizer in agriculture has been proved to be able to create good economic and environmental benefits. Si is the second most abundant earth crust element. Si fertilizer improves soil quality and alleviates biotic and abiotic crop stress. It is of great significance to understand the function of Si fertilizer in agricultural utilization and environmental remediation. This paper reviews the Si-based fertilizer in farmland use and summarizes prior research relevant with characterization, soil quality improvement, and pollution remediation effects. Its use in agriculture enhances plant silicon uptake, mediates plant salt and drought stress and remediates heavy metals such as Al, As, Cd, Cu, Zn and Cr. This article also summarizes the detoxification mechanism of silicon and its effects on plant physiological activity such as photosynthesis and transpiration. Fertilizer materials and crop fertilizer management were also considered. Foliar spraying is an effective method to improve crop growth and yield and reduce biotic or abiotic stress. Silicon nanoparticle material provides potential with great potential and prospects. More investigation and research are prospected to better understand how silicon impacts the environment and whether it is a beneficial additive.
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Affiliation(s)
- Keqi Zhao
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Yuan Yang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China.
| | - Lihua Zhang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Jiachao Zhang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China.
| | - Yaoyu Zhou
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Hongli Huang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Shuang Luo
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Lin Luo
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
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Sujkowska-Rybkowska M, Rusaczonek A, Kochańska-Jeziorska A. Exploring apoplast reorganization in the nodules of Lotus corniculatus L. growing on old Zn-Pb calamine wastes. JOURNAL OF PLANT PHYSIOLOGY 2022; 268:153561. [PMID: 34801776 DOI: 10.1016/j.jplph.2021.153561] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/06/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
Nodulation and symbiotic nitrogen fixation are important factors that determine legume growth. A pot experiment was carried out to determine the effects of Zn-Pb contamination on nodule apoplast (cell walls and intercellular spaces) of bird's foot trefoil (Lotus corniculatus L.) that spontaneously colonized old calamine wastes. The plants were grown in pots filled with sterile calamine substrate (M, metal treated) or expanded clay (NM, untreated) and inoculated with calamine-derived Lotus-nodulating Bradyrhizobium liaoningense. Apoplast reorganization in the nodules was examined using specific dyes for cellulose, pectin and lignin detection, and immuno-histochemical techniques based on monoclonal antibodies against xyloglucan (Lm25), pectins (Jim5 and Jim7), and structural proteins (arabinogalactan protein - Lm14 and extensin - Jim12). Microscopic analysis of metal-treated nodules revealed changes in the apoplast structure and composition of nodule cortex tissues and infected cells. Wall thickening was accompanied by intensified deposition of cellulose, xyloglucan, esterified pectin, arabinogalactan protein and extensin. The metal presence redirected also lignin and suberin deposition in the walls of the nodule cortex tissues. Our results showed reorganization of the apoplast of cortex tissues and infected cells of Lotus nodules under Zn-Pb presence. These changes in the apoplast structure and composition may have created actual barriers for the toxic ions. For this reason, they can be regarded as an element of legume defense strategy against metal stress that enables effective functioning of L. corniculatus-rhizobia symbiosis on Zn-Pb polluted calamine tailings.
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Affiliation(s)
- Marzena Sujkowska-Rybkowska
- Department of Botany, Institute of Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Building 37, 02-776, Warsaw, Poland.
| | - Anna Rusaczonek
- Department of Botany, Institute of Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Building 37, 02-776, Warsaw, Poland.
| | - Arletta Kochańska-Jeziorska
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Building 37, 02-776, Warsaw, Poland.
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Pavlovic J, Kostic L, Bosnic P, Kirkby EA, Nikolic M. Interactions of Silicon With Essential and Beneficial Elements in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:697592. [PMID: 34249069 PMCID: PMC8261142 DOI: 10.3389/fpls.2021.697592] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 05/27/2021] [Indexed: 05/18/2023]
Abstract
Silicon (Si) is not classified as an essential element for plants, but numerous studies have demonstrated its beneficial effects in a variety of species and environmental conditions, including low nutrient availability. Application of Si shows the potential to increase nutrient availability in the rhizosphere and root uptake through complex mechanisms, which still remain unclear. Silicon-mediated transcriptional regulation of element transporters for both root acquisition and tissue homeostasis has recently been suggested as an important strategy, varying in detail depending on plant species and nutritional status. Here, we summarize evidence of Si-mediated acquisition, uptake and translocation of nutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), boron (B), chlorine (Cl), and nickel (Ni) under both deficiency and excess conditions. In addition, we discuss interactions of Si-with beneficial elements: aluminum (Al), sodium (Na), and selenium (Se). This review also highlights further research needed to improve understanding of Si-mediated acquisition and utilization of nutrients and vice versa nutrient status-mediated Si acquisition and transport, both processes which are of high importance for agronomic practice (e.g., reduced use of fertilizers and pesticides).
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Affiliation(s)
- Jelena Pavlovic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Ljiljana Kostic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Predrag Bosnic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Ernest A. Kirkby
- Faculty of Biological Sciences, Leeds University, Leeds, United Kingdom
| | - Miroslav Nikolic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
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Pons ML, Collin B, Doelsch E, Chaurand P, Fehlauer T, Levard C, Keller C, Rose J. X-ray absorption spectroscopy evidence of sulfur-bound cadmium in the Cd-hyperaccumulator Solanum nigrum and the non-accumulator Solanum melongena. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 279:116897. [PMID: 33774364 DOI: 10.1016/j.envpol.2021.116897] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/24/2021] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
It has been proposed that non-protein thiols and organic acids play a major role in cadmium phytoavailability and distribution in plants. In the Cd-hyperaccumulator Solanum nigrum and non-accumulator Solanum melongena, the role of these organic ligands in the accumulation and detoxification mechanisms of Cd are debated. In this study, we used X-ray absorption spectroscopy to investigate Cd speciation in these plants (roots, stem, leaves) and in the soils used for their culture to unravel the plants responses to Cd exposure. The results show that Cd in the 100 mg kg-1 Cd-doped clayey loam soil is sorbed onto iron oxyhydroxides. In both S. nigrum and S. melongena, Cd in roots and fresh leaves is mainly bound to thiol ligands, with a small contribution of inorganic S ligands in S. nigrum leaves. We interpret the Cd binding to sulfur ligands as detoxification mechanisms, possibly involving the sequestration of Cd complexed with glutathione or phytochelatins in the plant vacuoles. In the stems, results show an increase binding of Cd to -O ligands (>50% for S. nigrum). We suggest that Cd is partly complexed by organic acids for transportation in the sap.
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Affiliation(s)
- Marie-Laure Pons
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France.
| | - Blanche Collin
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Emmanuel Doelsch
- CIRAD, UPR Recyclage et Risque, F-34398, Montpellier, France; Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France
| | - Perrine Chaurand
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Till Fehlauer
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Clément Levard
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Catherine Keller
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
| | - Jérôme Rose
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE UMR 7330, Aix en Provence, France
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Vidal C, Larama G, Riveros A, Meneses C, Cornejo P. Main Molecular Pathways Associated with Copper Tolerance Response in Imperata cylindrica by de novo Transcriptome Assembly. PLANTS (BASEL, SWITZERLAND) 2021; 10:357. [PMID: 33668499 PMCID: PMC7918359 DOI: 10.3390/plants10020357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/04/2021] [Accepted: 02/07/2021] [Indexed: 12/20/2022]
Abstract
The metallophyte Imperata cylindrica inhabits copper (Cu) polluted soils in large areas from Central Chile. Here, we subjected clonal vegetative plantlets to 300 mg Cu kg-1 of substrate for 21 days to identify the main molecular pathways involved in the response to Cu stress. Transcriptomic analyses were performed for shoots and roots, with and without Cu supply. RNA-Seq and de novo transcriptome assembly were performed to identify the gene response associated with molecular mechanisms of Cu tolerance in I. cylindrica. De novo transcriptome revealed a total of 200,521 transcripts (1777 bp) comprising ~91% complete ultra-conserved genes in the eukaryote and Plantae database. The differentially expressed genes (DEGs) in roots were 7386, with 3558 of them being up-regulated and the other 3828 down-regulated. The transcriptome response in shoots was significantly less, showing only 13 up-regulated and 23 down-regulated genes. Interestingly, DEGs mainly related with actin and cytoskeleton formation, and to a minor degree, some DEGs associated with metal transporters and superoxide dismutase activity in root tissues were found. These transcriptomic results suggest that cytoskeleton could be acting as a mechanism of Cu-binding in the root, resulting in a high Cu tolerance response in this metallophyte, which deserve to be analyzed ultra-structurally. Our study contributes to reinforcing the potential of I. cylindrica as a candidate plant species to be used as a phytoremediation agent in Cu-contaminated environments.
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Affiliation(s)
- Catalina Vidal
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile;
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile
| | - Giovanni Larama
- Centro de Modelación y Computación Científica, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile;
| | - Aníbal Riveros
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile; (A.R.); (C.M.)
- FONDAP Center for Genome Regulation, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile
| | - Claudio Meneses
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile; (A.R.); (C.M.)
- FONDAP Center for Genome Regulation, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile
| | - Pablo Cornejo
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile;
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10
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Application of Bamboo Plants in Nine Aspects. ScientificWorldJournal 2020; 2020:7284203. [PMID: 33061861 PMCID: PMC7555460 DOI: 10.1155/2020/7284203] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 09/18/2020] [Indexed: 01/16/2023] Open
Abstract
Bamboo forests are undoubtedly one of the most abundant nontimber plants on Earth and cover a wide area of tropical and subtropical regions around the world. This amazing plant has unique rapid growth and can play an important role in protecting our planet from pollution and improving the soil. Bamboo can be used as a biofuel, food, and for architecture and construction applications and plays a large role in the local economy by creating job opportunities. The aim of this paper is to review the extraordinary tropical plant bamboo by explaining the mechanisms related to the growth and strength of bamboo and identifying ways to utilize bamboo in industry, employment, climate change mitigation, and soil erosion reduction.
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11
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Vieira Filho LO, Monteiro FA. Silicon modulates copper absorption and increases yield of Tanzania guinea grass under copper toxicity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:31221-31232. [PMID: 32488716 DOI: 10.1007/s11356-020-09337-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 05/18/2020] [Indexed: 05/04/2023]
Abstract
Silicon (Si) is a beneficial element which was proven to enhance the tolerance of plants to excess metal in a given growth medium. However, the efficacy of Si in mitigating Cu toxicity in plants can vary between plant species and with the amount of copper (Cu) present in the soil/medium. An experiment was performed to investigate the role of Si in alleviating Cu toxicity in Tanzania guinea grass (Panicum maximum cv. Tanzania). The experimental design consisted on complete random blocks with tree replicates containing three Si rates (0, 1, and 3 mmol L-1) and four Cu rates (0.3, 250, 500, and 750 μmol L-1). The grass was grown for 62 days in a greenhouse under hydroponic conditions, with a total of 36 pots. Thirteen days after sowing, seedlings were transplanted to pots and grown for further 25 days, and then exposed to the set Cu rates for 7 days. The plants were also evaluated more for 30 days after the first harvesting. The results confirmed that the Si supply to Tanzania guinea grass can alleviate the effects of excessive Cu. Plant yield increased with Si supply and decreased with the increment of Cu rates in both growth periods. Copper concentration in diagnostic leaves (DL) and in roots, and Cu content in shoots and roots were higher in plants exposed to Cu of 750 μmol L-1 with no Si application than in other combinations. Besides reducing Cu concentration in plant tissues, the most important Si role was reducing the transport of Cu from roots to shoots, which allowed successive harvesting. Graphical abstract.
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Affiliation(s)
- Leandro Otavio Vieira Filho
- "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba, 13418-900, Brazil
- Range Cattle Research and Education Center, University of Florida, Ona, 33865, USA
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12
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Chen J, Xia X, Chu S, Wang H, Zhang Z, Xi N, Gan J. Cation-π Interactions with Coexisting Heavy Metals Enhanced the Uptake and Accumulation of Polycyclic Aromatic Hydrocarbons in Spinach. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:7261-7270. [PMID: 32434324 DOI: 10.1021/acs.est.0c00363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Few studies have considered the effect of co-occurring heavy metals on plant accumulation of hydrophobic organic compounds (HOCs), and less is known about the role of intermolecular interactions. This study investigated the molecular mechanisms of Cu/Zn effects on hydroponic uptake of four deuterated polycyclic aromatic hydrocarbons (PAHs-d10) by spinach (Spinacia oleracea L.). Both solubility enhancement experiment and quantum mechanical calculations demonstrated the existence of [PAH-Cu(H2O)0-4]2+ and [2·PAH-Cu(H2O)0-2]2+ via cation-π interactions when Cu2+ concentration was ≤100 μmol/L. Notably, PAH-d10 concentrations in both roots and shoots increased significantly with Cu2+ concentration. This was because the formation of phytoavailable PAH-Cu2+ complexes decreased PAH-d10 hydrophobicity and consequently decreased their sorption onto dissolved organic carbon (DOC, i.e., root exudates), thereby increasing phytoavailable concentrations and uptake of PAHs-d10. X-ray absorption near-edge structure analysis showed that PAH-Cu2+ complexes could enter defective spinach roots via apoplastic pathway. However, Zn2+ and PAHs-d10 cannot form the cation-π interactions because of the high desolvation penalty of Zn2+. Actually, Zn2+ decreased the spinach uptake of PAHs-d10 due to the increase of DOC induced by Zn. This work provides molecular insights into how metals could selectively affect the plant uptake of HOCs and highlights the importance of considering the HOC phytoavailability with coexisting metals.
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Affiliation(s)
- Jian Chen
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xinghui Xia
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Shengqi Chu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Haotian Wang
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Zhenrui Zhang
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Nannan Xi
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Jay Gan
- Department of Environmental Sciences, University of California, Riverside, Riverside, California 92521, United States
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13
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Cui JL, Zhao YP, Chan TS, Zhang LL, Tsang DCW, Li XD. Spatial distribution and molecular speciation of copper in indigenous plants from contaminated mine sites: Implication for phytostabilization. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:121208. [PMID: 31563672 DOI: 10.1016/j.jhazmat.2019.121208] [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: 12/11/2018] [Revised: 07/20/2019] [Accepted: 09/10/2019] [Indexed: 05/10/2023]
Abstract
Contaminated mining sites require ecological restoration work, of which phytoremediation using appropriate plant species is an attractive option. Our present study is focused on one typical contaminated mine site with indigenous plant cover. The X-ray absorption near edge structure (XANES) analysis indicated that Cu (the major contaminant) was primarily associated with goethite (adsorbed fraction), with a small amount of Cu oxalate-like species (organic fraction) in mine affected soil. With growth of plant species like Miscanthus floridulus and Stenoloma chusanum, the Cu-oxalate like organic species in rhizosphere soil significantly increased, with corresponding decrease in Cu-goethite. In the root cross-section of Miscanthus floridulus, synchrotron-based micro-X-ray fluorescence (μ-XRF) microscopy and micro-XANES results indicated that most Cu was sequestered around the root surface/epidermis, primarily forming Cu alginate-like species as a Cu-tolerance mechanism. From the root epidermis to the cortex and vascular bundle, more Cu(I)-glutathione was observed, suggesting reductive detoxification ability of Cu(II) to Cu(I) during the transport of Cu in the root. The observation of Cu-histidine in root internal cell layers showed another Cu detoxification pathway based on coordinating amino ligands. Miscanthus floridulus showed ability to accumulate phosphorous and nitrogen nutrients in rhizosphere and may be an option for in situ phytostabilization of metals in contaminated mining area.
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Affiliation(s)
- Jin-Li Cui
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Yan-Ping Zhao
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu, 30076, Taiwan
| | - Li-Li Zhang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201214, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Xiang-Dong Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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14
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Bosnić D, Bosnić P, Nikolić D, Nikolić M, Samardžić J. Silicon and Iron Differently Alleviate Copper Toxicity in Cucumber Leaves. PLANTS (BASEL, SWITZERLAND) 2019; 8:E554. [PMID: 31795296 PMCID: PMC6963465 DOI: 10.3390/plants8120554] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/19/2019] [Accepted: 11/20/2019] [Indexed: 11/17/2022]
Abstract
Copper (Cu) toxicity in plants may lead to iron (Fe), zinc (Zn) and manganese (Mn) deficiencies. Here, we investigated the effect of Si and Fe supply on the concentrations of micronutrients and metal-chelating amino acids nicotianamine (NA) and histidine (His) in leaves of cucumber plants exposed to Cu in excess. Cucumber (Cucumis sativus L.) was treated with 10 µM Cu, and additional 100 µM Fe or/and 1.5 mM Si for five days. High Cu and decreased Zn, Fe and Mn concentrations were found in Cu treatment. Additional Fe supply had a more pronounced effect in decreasing Cu accumulation and improving the molar ratio between micronutrients as compared to the Si supply. However, the simultaneous supply of Fe and Si was the most effective treatment in alleviation of Cu-induced deficiency of Fe, Zn and Mn. Additional Fe supply increased the His but not NA concentration, while Si supply significantly increased both NA and His whereby the NA:Cu and His:Cu molar ratios exceeded the control values indicating that Si recruits Cu-chelation to achieve Cu tolerance. In conclusion, Si-mediated alleviation of Cu toxicity was directed toward Cu tolerance while Fe-alleviative effect was due to a dramatic decrease in Cu accumulation.
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Affiliation(s)
- Dragana Bosnić
- Laboratory for Plant Molecular Biology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia; (D.B.); (D.N.)
| | - Predrag Bosnić
- Department of Plant Nutrition, Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11000 Belgrade, Serbia; (P.B.); (M.N.)
| | - Dragana Nikolić
- Laboratory for Plant Molecular Biology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia; (D.B.); (D.N.)
| | - Miroslav Nikolić
- Department of Plant Nutrition, Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11000 Belgrade, Serbia; (P.B.); (M.N.)
| | - Jelena Samardžić
- Department of Plant Nutrition, Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11000 Belgrade, Serbia; (P.B.); (M.N.)
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15
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Cui JL, Zhao YP, Lu YJ, Chan TS, Zhang LL, Tsang DCW, Li XD. Distribution and speciation of copper in rice (Oryza sativa L.) from mining-impacted paddy soil: Implications for copper uptake mechanisms. ENVIRONMENT INTERNATIONAL 2019; 126:717-726. [PMID: 30878867 DOI: 10.1016/j.envint.2019.02.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 02/11/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
Long term mining activities can cause significant metal pollution in the environment, thereby showing potential risk to the paddy field. Elucidating the interfacial processes of trace metals from contaminated paddy soil to rice within the rhizosphere can provide important information on metal biogeochemistry and food safety. The current study aims to explore the spatial distribution and molecular speciation of Cu from rhizosphere to rice plant in a mining-impacted paddy soil, and reveal the possible uptake mechanisms. X-ray absorption near edge structure (XANES) analysis indicated that Cu was primarily associated with iron oxide and sulfide in soil with a minor proportion of organic complexed species. In the rice samples, Cu showed much higher concentrations in the roots than the shoots, as most Cu was sequestered in the root surface and epidermis (primarily in the form of C/N ligands bound Cu species), rather than root xylem, as identified by micro X-ray fluorescence (μ-XRF) imaging coupling with μ-XANES. By contrast, in the root xylem, thiol-S bound Cu(I) complex was observed, representing the reduced product of Cu(II) by thiol-S ligands in rice root. The absorbed Cu was probably transported from the root to the aerial part as C/N ligand bound Cu complex such as Cu-histidine like species, which was observed in the root xylem. The large retention capacity and reduction of Cu(II) in rice root alleviated Cu toxicity to rice, which was beneficial for food safety (e.g., lower concentration of Cu in rice grains). These findings showed for the first time that the uptake mechanisms by rice from field contaminated sites, which shed light on Cu detoxification process and potential remediation strategies.
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Affiliation(s)
- Jin-Li Cui
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Yan-Ping Zhao
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Ying-Jui Lu
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Li-Li Zhang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Xiang-Dong Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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16
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Zheng J, Chen Q, Xu J, Wen L, Li F, Zhang L. Effect of Degree of Silicification on Silica/Silicic Acid Binding Cd(II) and Its Mechanism. J Phys Chem A 2019; 123:3718-3727. [DOI: 10.1021/acs.jpca.9b00823] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jiewei Zheng
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P R China
| | - Quan Chen
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P R China
| | - Jianchang Xu
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P R China
| | - Liyang Wen
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P R China
| | - Fangbai Li
- Guangdong Public Laboratory of Environmental Science and Technology, Guangdong Institute of Eco-Environment and Soil Science, Guangzhou 510650, China
| | - Lijuan Zhang
- Guangdong Provincial Key Lab of Green Chemical Product Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P R China
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17
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Hasanuzzaman M, Alam MM, Nahar K, Mohsin SM, Bhuyan MHMB, Parvin K, Hawrylak-Nowak B, Fujita M. Silicon-induced antioxidant defense and methylglyoxal detoxification works coordinately in alleviating nickel toxicity in Oryza sativa L. ECOTOXICOLOGY (LONDON, ENGLAND) 2019; 28:261-276. [PMID: 30761430 DOI: 10.1007/s10646-019-02019-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/16/2019] [Indexed: 05/11/2023]
Abstract
Nickel (Ni), an essential nutrient of plant but very toxic to plant at supra-optimal concentration that causes inhibition of seed germination emergence and growth of plants as a consequence of physiological disorders. Hence, the present study investigates the possible mechanisms of Ni tolerance in rice seedlings by exogenous application of silicon (Si). Thirteen-day-old hydroponically grown rice (Oryza sativa L. cv. BRRI dhan54) were treated with Ni (NiSO4.7H2O, 0.25 and 0.5 mM) sole or in combination with 0.50 mM Na2SiO3 for a period of 3 days to investigate the effect of Si supply for revoking the Ni stress. Nickel toxicity gave rise to reactive oxygen species (ROS) and cytotoxic methylglyoxal (MG), accordingly, initiated oxidative stress in rice leaves, and accelerated peroxidation of lipids and consequent damage to membranes. Reduced growth, biomass accumulation, chlorophyll (chl) content, and water balance under Ni-stress were also found. However, free proline (Pro) content increased in Ni-exposed plants. In contrast, the Ni-stressed seedlings fed with supplemental Si reclaimed the seedlings from chlorosis, water retrenchment, growth inhibition, and oxidative stress. Silicon up-regulated most of the antioxidant defense components as well as glyoxalase systems, which helped to improve ROS scavenging and MG detoxification. Hence, these results suggest that the exogenous Si application can improve rice seedlings' tolerance to Ni-toxicity.
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Affiliation(s)
- Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, 1207, Bangladesh.
| | - Md Mahabub Alam
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, 1207, Bangladesh
- Department of Agriculture, Faculty of Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Kamrun Nahar
- Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, 1207, Bangladesh
| | - Sayed Mohammad Mohsin
- Laboratory of Plant Stress Responses, Department of Applied Biological Sciences, Faculty of Agriculture, Kagawa University, Miki-Cho, Kita-Gun, Kagawa, 761-0795, Japan
- Department of Plant Pathology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, 1207, Bangladesh
| | - M H M Borhannuddin Bhuyan
- Laboratory of Plant Stress Responses, Department of Applied Biological Sciences, Faculty of Agriculture, Kagawa University, Miki-Cho, Kita-Gun, Kagawa, 761-0795, Japan
- Citrus Research Station, Bangladesh Agricultural Research Institute, Jaintapur, Sylhet, Bangladesh
| | - Khursheda Parvin
- Laboratory of Plant Stress Responses, Department of Applied Biological Sciences, Faculty of Agriculture, Kagawa University, Miki-Cho, Kita-Gun, Kagawa, 761-0795, Japan
- Department of Horticulture, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, 1207, Bangladesh
| | | | - Masayuki Fujita
- Laboratory of Plant Stress Responses, Department of Applied Biological Sciences, Faculty of Agriculture, Kagawa University, Miki-Cho, Kita-Gun, Kagawa, 761-0795, Japan.
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18
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Bhat JA, Shivaraj SM, Singh P, Navadagi DB, Tripathi DK, Dash PK, Solanke AU, Sonah H, Deshmukh R. Role of Silicon in Mitigation of Heavy Metal Stresses in Crop Plants. PLANTS 2019; 8:plants8030071. [PMID: 30901942 PMCID: PMC6473438 DOI: 10.3390/plants8030071] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 03/16/2019] [Accepted: 03/19/2019] [Indexed: 01/17/2023]
Abstract
Over the past few decades, heavy metal contamination in soil and water has increased due to anthropogenic activities. The higher exposure of crop plants to heavy metal stress reduces growth and yield, and affect the sustainability of agricultural production. In this regard, the use of silicon (Si) supplementation offers a promising prospect since numerous studies have reported the beneficial role of Si in mitigating stresses imposed by biotic as well as abiotic factors including heavy metal stress. The fundamental mechanisms involved in the Si-mediated heavy metal stress tolerance include reduction of metal ions in soil substrate, co-precipitation of toxic metals, metal-transport related gene regulation, chelation, stimulation of antioxidants, compartmentation of metal ions, and structural alterations in plants. Exogenous application of Si has been well documented to increase heavy metal tolerance in numerous plant species. The beneficial effects of Si are particularly evident in plants able to accumulate high levels of Si. Consequently, to enhance metal tolerance in plants, the inherent genetic potential for Si uptake should be improved. In the present review, we have discussed the potential role and mechanisms involved in the Si-mediated alleviation of metal toxicity as well as different approaches for enhancing Si-derived benefits in crop plants.
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Affiliation(s)
- Javaid Akhter Bhat
- Department of Genetics and Plant Breeding, Indian Agricultural Research Institute, New Delhi 110012, India.
| | - S M Shivaraj
- Département de Phytologie, Université Laval, Québec City, QC G1V 0A6, Canada.
| | - Pritam Singh
- National Agri-Food Biotechnology Institute, Mohali 140306, India.
| | - Devanna B Navadagi
- National Research Centre on Plant Biotechnology, New Delhi 110012, India.
| | - Durgesh Kumar Tripathi
- Amity Institute of Organic Agriculture, Amity University, Uttar Pradesh, Noida 201313, India.
| | - Prasanta K Dash
- National Research Centre on Plant Biotechnology, New Delhi 110012, India.
| | | | - Humira Sonah
- National Agri-Food Biotechnology Institute, Mohali 140306, India.
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute, Mohali 140306, India.
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19
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Zhang Y, Wang X, Ji X, Liu Y, Lin Z, Lin Z, Xiao S, Peng B, Tan C, Zhang X. Effect of a novel Ca-Si composite mineral on Cd bioavailability, transport and accumulation in paddy soil-rice system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:802-811. [PMID: 30446285 DOI: 10.1016/j.jenvman.2018.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/16/2018] [Accepted: 10/02/2018] [Indexed: 06/09/2023]
Abstract
Ubiquitous cadmium (Cd) contamination in mine impacted paddy soil has been jeopardizing regional rice quality, which represents a dominant pathway of Cd exposure in populations depending on a rice diet. Two major aspects of mitigation, soil liming and Si fertilization, were integrated and investigated with a Ca-Si-rich composite mineral (CS) derived from feldspar and carbonate. With the CS amendment, bioavailable Cd in rice rhizosphere was reduced by 92-100% from tillering to maturation stage, paralleled by a marked increase in Cd bound to Fe/Mn oxides and carbonate. As indicated by XRD analysis, the much reduced labile pool of Cd in the CS-amended soil could be mainly attributed to Cd (co)precipitation (Cd(OH)2, Cd2(OH)3Cl, CH6Br3CdN) and surface complexation on more negatively charged oxides at elevated soil pH with CS addition. EDX line scan illustrated much more intensified Si deposition along root cross-section in the CS treatment, which resulted in 1.5-2.1-fold higher Cd sequestration in the CS-amended root than control. As a direct result, the root-to-shoots Cd translocation was reduced significantly by 42-51%, while a slightly less significant decrease in brown rice Cd was obtained with the CS treatment relative to control. The CS amendment showed differing effects on brown rice mineral accumulation, with 1.2-1.5-fold increase in brown rice Zn and simultaneously reduced Fe, Mn, Mg and Cu in brown rice. Our results call the readers' attention to the potential impact of soil ameliorator on grain mineral uptake, and we suggest that proper fortification with mineral fertilizers should be supplemented to assist sustainable rice production with improved mineral nutrition.
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Affiliation(s)
- Yue Zhang
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Xin Wang
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China; Stockbridge School of Agriculture, University of Massachusetts, Amberst, MA 01003, United States.
| | - Xionghui Ji
- Hunan Institute of Agro-Environment and Ecology, Changsha, Hunan, 410125, China; Key Lab of Prevention, Control and Remediation of Soil Heavy Metal Pollution in Hunan Province, Changsha, Hunan, 410125, China; Ministry of Agriculture Key Lab of Agro-Environment Institute in the Midstream of Yangtze River Plain, Changsha, Hunan, 410125, China.
| | - Yaochi Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Zhijia Lin
- Hunan Institute of Geological Survey, Changsha, Hunan, 410116, China
| | - Zhaojun Lin
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Sha Xiao
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Bo Peng
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Changyin Tan
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Xinping Zhang
- College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan, 410081, China
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20
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Co-Amendment of S and Si Alleviates Cu Toxicity in Rice ( Oryza Sativa L.) Grown on Cu-Contaminated Paddy Soil. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 16:ijerph16010057. [PMID: 30587815 PMCID: PMC6339128 DOI: 10.3390/ijerph16010057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/19/2018] [Accepted: 12/23/2018] [Indexed: 11/17/2022]
Abstract
With irrigation using waste water, application of sewage sludge, and development of mine exploration, copper (Cu) contamination in some paddy fields has become increasingly serious. A greenhouse pot experiment was conducted using a factorial design with three sulfur (S) application rates (i.e., 0, 0.013, and 0.026 g S kg-1 soil) and three silicon (Si) application rates (i.e., 0, 0.05, and 0.1 g Si kg-1 soil) to test the effect of co-amendment of S and Si on alleviating Cu contamination in paddy soil. There were significant interaction effects between S and Si on soil Cu speciation and Cu uptake by rice plants (except brown rice). Sulfur addition decreased the content of soil-exchangeable Cu, whereas Si addition decreased the content of soil-reducible Cu, suggesting that co-amendment of S and Si generally reduced Cu availability. Copper was biominimized in the soil-rice plant system and rice root had the greatest Cu concentration (163⁻285 mg kg-1). Co-amendment of S and Si decreased the translocation of Cu from soil to rice root, possibly due to decreased soil Cu mobility and enhancement of the formation of iron plaque on rice root. Co-amendment of S-Si at a rate of 0.013 (S)⁻0.1 (Si) g kg-1 soil, respectively, was the optimal among all treatments.
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21
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Zhao YP, Cui JL, Chan TS, Dong JC, Chen DL, Li XD. Role of chelant on Cu distribution and speciation in Lolium multiflorum by synchrotron techniques. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 621:772-781. [PMID: 29202288 DOI: 10.1016/j.scitotenv.2017.11.189] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 11/16/2017] [Accepted: 11/16/2017] [Indexed: 06/07/2023]
Abstract
Chelants are known to enhance metal translocation in plants; however, the underlying mechanisms are still not fully understood. This study aimed to elucidate the distribution and speciation of Cu in ryegrass (Lolium multiflorum) in both absence and presence of the biodegradable chelant [S,S']-ethylenediamine disuccinic acid (EDDS). The results showed that EDDS increased the Cu translocation factor from root to shoot by 6-9 folds under CuEDDS in comparison with free Cu (50-250μM). Synchrotron-based microscopic X-ray fluorescence (μ-XRF) mapping revealed that EDDS alleviated Cu deposition in the root meristem of root apex and the junction of lateral root zone, and facilitated Cu transport to root stele for subsequent translocation upwards. X-ray absorption near edge structure (XANES) analysis found that free Cu was sequestered in plants as a mixture of Cu-organic ligands. In the EDDS treatment, Cu was primarily present as CuEDDS (49-67%) in plants with partial chemical transformation to Cu-histidine (21-36%) and Cu(I)-glutathione (0-24%). These results suggest that EDDS improves internal Cu mobility through forming CuEDDS, thus decreasing the root sequestration of Cu, and ultimately facilitating Cu transport to plant shoots.
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Affiliation(s)
- Yan-Ping Zhao
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Jin-Li Cui
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Jun-Cai Dong
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Dong-Liang Chen
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Dong Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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22
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Zaheer MM, Yasin NA, Ahmad SR, Khan WU, Ahmad A, Ali A, Rehman SU. Amelioration of cadmium stress in gladiolus ( Gladiolus grandiflora L.) by application of potassium and silicon. JOURNAL OF PLANT NUTRITION 2018; 41:461-476. [DOI: 10.1080/01904167.2017.1385808] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 01/20/2017] [Indexed: 06/16/2023]
Affiliation(s)
| | | | | | | | - Aqeel Ahmad
- RO-Office, University of the Punjab, Lahore, Pakistan
| | - Aamir Ali
- Botany Department, University of Sargodha, Sargodha, Pakistan
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23
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Etesami H, Jeong BR. Silicon (Si): Review and future prospects on the action mechanisms in alleviating biotic and abiotic stresses in plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:881-896. [PMID: 28968941 DOI: 10.1016/j.ecoenv.2017.09.063] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/17/2017] [Accepted: 09/22/2017] [Indexed: 05/22/2023]
Abstract
In the era present, due to increasing incidences of a large number of different biotic and abiotic stresses all over the world, the growth of plants (principal crops) may be restrained by these stresses. In addition to beneficial microorganisms, use of silicon (Si)-fertilizer is known as an ecologically compatible and environmentally friendly technique to stimulate plant growth, alleviate various biotic and abiotic stresses in plants, and enhance the plant resistance to multiple stresses, because Si is not harmful, corrosive, and polluting to plants when presents in excess. Here, we reviewed the action mechanisms by which Si alleviates abiotic and biotic stresses in plants. The use of Si (mostly as industrial slags and rice straw) is predicted to become a sustainable strategy and an emerging trend in agriculture to enhance crop growth and alleviate abiotic and biotic stresses in the not too distant future. In this review article, the future research needs on the use of Si under the conditions of abiotic and biotic stresses are also highlighted.
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Affiliation(s)
- Hassan Etesami
- Department of Soil Science, Faculty of Agricultural Engineering and Technology, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871 Iran.
| | - Byoung Ryong Jeong
- Horticulture Major, Division of Applies Life Science (BK21 Plus Program), Graduate School, Gyeongsang National University, Jinju 52828, Republic of Korea
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Morina F, Vidović M, Srećković T, Radović V, Veljović-Jovanović S. Biomonitoring of Urban Pollution Using Silicon-Accumulating Species, Phyllostachys aureosulcata 'Aureocaulis'. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 99:706-712. [PMID: 29032386 DOI: 10.1007/s00128-017-2189-0] [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: 06/18/2017] [Accepted: 10/05/2017] [Indexed: 06/07/2023]
Abstract
We investigated metal accumulation in bamboo leaves during three seasons at three urban locations differing in pollution levels. The higher content of Cu, Pb, and Zn in the leaves was in correlation with the highest bioavailable content of these elements in the soil at the most polluted location. The content of leaf trace elements was higher in summer and autumn compared to spring. Scanning electron microscopy with energy dispersive X-ray spectroscopy showed that Si accumulation in bamboo leaves was the highest in epidermis and vascular tissue, and was co-localized with trace metals. Analysis of phytoliths showed co-deposition of Al, C, and Si, implying the involvement of Si in metal detoxification. Compared to a common urban tree, linden, bamboo showed better capacity to maintain cellular redox homeostasis under deteriorated environmental conditions. The results suggest that bamboo can be efficiently used for biomonitoring of air and soil metal pollution and remediation in urban areas.
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Affiliation(s)
- Filis Morina
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia.
- Biology Centre of the Czech Academy of Sciences, Institute of Plant Molecular Biology, České Budejovice, Czechia.
| | - Marija Vidović
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia
| | - Tatjana Srećković
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia
| | - Vesela Radović
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia
| | - Sonja Veljović-Jovanović
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia
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Luyckx M, Hausman JF, Lutts S, Guerriero G. Silicon and Plants: Current Knowledge and Technological Perspectives. FRONTIERS IN PLANT SCIENCE 2017; 8:411. [PMID: 28386269 PMCID: PMC5362598 DOI: 10.3389/fpls.2017.00411] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 03/10/2017] [Indexed: 05/20/2023]
Abstract
Elemental silicon (Si), after oxygen, is the second most abundant element in the earth's crust, which is mainly composed of silicates. Si is not considered essential for plant growth and development, however, increasing evidence in the literature shows that this metalloid is beneficial to plants, especially under stress conditions. Indeed Si alleviates the toxic effects caused by abiotic stresses, e.g., salt stress, drought, heavy metals, to name a few. Biogenic silica is also a deterrent against herbivores. Additionally, Si ameliorates the vigor of plants and improves their resistance to exogenous stresses. The protective role of Si was initially attributed to a physical barrier fortifying the cell wall (e.g., against fungal hyphae penetration), however, several studies have shown that the action of this element on plants is far more complex, as it involves a cross-talk with the cell interior and an effect on plant metabolism. In this study the beneficial role of Si on plants will be discussed, by reviewing the available data in the literature. Emphasis will be given to the protective role of Si during (a)biotic stresses and in this context both priming and the effects of Si on endogenous phytohormones will be discussed. A whole section will be devoted to the use of silica (SiO2) nanoparticles, in the light of the interest that nanotechnology has for agriculture. The paper also discusses the potential technological aspects linked to the use of Si in agriculture and to modify/improve the physical parameters of plant fibers. The study indeed provides perspectives on the use of Si to increase the yield of fiber crops and to improve the thermal stability and tensile strength of natural fibers.
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Affiliation(s)
- Marie Luyckx
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute - Agronomy, Université Catholique de LouvainLouvain-la-Neuve, Belgium
| | - Jean-Francois Hausman
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
| | - Stanley Lutts
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute - Agronomy, Université Catholique de LouvainLouvain-la-Neuve, Belgium
- *Correspondence: Stanley Lutts, Gea Guerriero,
| | - Gea Guerriero
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
- *Correspondence: Stanley Lutts, Gea Guerriero,
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Imtiaz M, Rizwan MS, Mushtaq MA, Ashraf M, Shahzad SM, Yousaf B, Saeed DA, Rizwan M, Nawaz MA, Mehmood S, Tu S. Silicon occurrence, uptake, transport and mechanisms of heavy metals, minerals and salinity enhanced tolerance in plants with future prospects: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 183:521-529. [PMID: 27623366 DOI: 10.1016/j.jenvman.2016.09.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 08/18/2016] [Accepted: 09/01/2016] [Indexed: 05/22/2023]
Abstract
Recently, heavy metals pollution due to industrialization and urbanization, use of untreated wastewater and unreasonable use of pesticides and fertilizers is increasing rapidly, resulting in major threat to the environment and contaminate soils. Silicon (Si) is the second most abundant element in the earth crust after oxygen. Although it's higher accumulation in plants, yet Si has not been listed as essential nutrient however, considered as beneficial element for growth of plants particularly in stressed environment. Research to date has demonstrated that silicon helps the plants to alleviate the various biotic and abiotic stresses. This review article presents a comprehensive update about Si and heavy metals, minerals and salinity stresses, and contained the progress about Si so far done worldwide in the light of previous studies to evaluate the ecological importance of Si. Moreover, this review will also be helpful to understand the Si uptake ability and its benefits on plants grown under stressed environment. Further research needs for Si-mediated mitigation of heavy metals and mineral nutrients stresses are also discussed.
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Affiliation(s)
- Muhammad Imtiaz
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Shahid Rizwan
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Adnan Mushtaq
- National Key Laboratory of Crop Genetic Improvement, National Center of Oil Crop Improvement, College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Ashraf
- Department of Soil and Environmental Sciences, University College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan.
| | - Sher Muhammad Shahzad
- Department of Soil and Environmental Sciences, University College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan.
| | - Balal Yousaf
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China.
| | - Dawood Anser Saeed
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Rizwan
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Azher Nawaz
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China.
| | - Sajid Mehmood
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Shuxin Tu
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Hubei Collaborative Innovation Center for Grain Industry, Jingzhou 434023, China.
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27
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Guigues S, Bravin MN, Garnier C, Masion A, Chevassus-Rosset C, Cazevieille P, Doelsch E. Involvement of nitrogen functional groups in high-affinity copper binding in tomato and wheat root apoplasts: spectroscopic and thermodynamic evidence. Metallomics 2016; 8:366-76. [DOI: 10.1039/c5mt00298b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual local environment of Cu in root apoplasts was identified.
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Affiliation(s)
- Stéphanie Guigues
- CIRAD
- UPR Recyclage et risque
- F-34398 Montpellier, France
- ADEME
- Angers cedex 01, France
| | | | | | - Armand Masion
- CNRS
- Aix-Marseille Université
- IRD
- 13545 Aix-en-Provence, France
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28
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Chen J, Shafi M, Li S, Wang Y, Wu J, Ye Z, Peng D, Yan W, Liu D. Copper induced oxidative stresses, antioxidant responses and phytoremediation potential of Moso bamboo (Phyllostachys pubescens). Sci Rep 2015; 5:13554. [PMID: 26337551 PMCID: PMC4559668 DOI: 10.1038/srep13554] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 07/30/2015] [Indexed: 11/27/2022] Open
Abstract
Moso bamboo is recognized as phytoremediation plant due to production of huge biomass and high tolerance in stressed environment. Hydroponics and pot experiments were conducted to investigate mechanism of copper tolerance and to evaluate copper accumulation capacity of Moso bamboo. In hydroponics experiment there was non significant variation in MDA contents of leaves compared with control. SOD and POD initially indicated enhancing trend with application of 5 μM Cu and then decreased consistently with application of 25 and 100 μM Cu. Application of each additional increment of copper have constantly enhanced proline contents while maximum increase of proline was observed with application of 100 μM copper. In pot experiment chlorophyll and biomass initially showed increasing tendency and decreased gradually with application of each additional increment of Cu. Normal growth of Moso bamboo was observed with application of 100 mg kg−1 copper. However, additional application of 300 or 600 mg kg−1 copper had significantly inhibited growth of Moso bamboo. The concentration of Cu in Moso bamboo has attained the levels of 340, 60, 23 mg kg−1 in roots, stems and leaves respectively. The vacuoles were the main organs which accumulated copper and reduced toxicity of copper as studied by TEM-DEX technology.
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Affiliation(s)
- Junren Chen
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | | | - Song Li
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | - Ying Wang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | - Jiasen Wu
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | - Zhengqian Ye
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | - Danli Peng
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | - Wenbo Yan
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
| | - Dan Liu
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A &F University, Lin'an Zhejiang, 311300, China
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29
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Adrees M, Ali S, Rizwan M, Zia-Ur-Rehman M, Ibrahim M, Abbas F, Farid M, Qayyum MF, Irshad MK. Mechanisms of silicon-mediated alleviation of heavy metal toxicity in plants: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 119:186-97. [PMID: 26004359 DOI: 10.1016/j.ecoenv.2015.05.011] [Citation(s) in RCA: 346] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 04/13/2015] [Accepted: 05/09/2015] [Indexed: 05/06/2023]
Abstract
In present era, heavy metal pollution is rapidly increasing which present many environmental problems. These heavy metals are mainly accumulated in soil and are transferred to food chain through plants grown on these soils. Silicon (Si) is the second most abundant element in the soil. It has been widely reported that Si can stimulate plant growth and alleviate various biotic and abiotic stresses, including heavy metal stress. Research to date has explored a number of mechanisms through which Si can alleviate heavy metal toxicity in plants at both plant and soil levels. Here we reviewed the mechanisms through which Si can alleviate heavy metal toxicity in plants. The key mechanisms evoked include reducing active heavy metal ions in growth media, reduced metal uptake and root-to-shoot translocation, chelation and stimulation of antioxidant systems in plants, complexation and co-precipitation of toxic metals with Si in different plant parts, compartmentation and structural alterations in plants and regulation of the expression of metal transport genes. However, these mechanisms might be associated with plant species, genotypes, metal elements, growth conditions, duration of the stress imposed and so on. Further research orientation is also discussed.
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Affiliation(s)
- Muhammad Adrees
- 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
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan.
| | - Muhammad Zia-Ur-Rehman
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
| | - Muhammad Ibrahim
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
| | - Farhat Abbas
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
| | - Mujahid Farid
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
| | - Muhammad Farooq Qayyum
- Department of Soil Sciences, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Kashif Irshad
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, 38000 Faisalabad, Pakistan
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30
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Stegemeier JP, Schwab F, Colman BP, Webb SM, Newville M, Lanzirotti A, Winkler C, Wiesner MR, Lowry GV. Speciation Matters: Bioavailability of Silver and Silver Sulfide Nanoparticles to Alfalfa (Medicago sativa). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:8451-60. [PMID: 26106801 DOI: 10.1021/acs.est.5b01147] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Terrestrial crops are directly exposed to silver nanoparticles (Ag-NPs) and their environmentally transformed analog silver sulfide nanoparticles (Ag2S-NPs) when wastewater treatment biosolids are applied as fertilizer to agricultural soils. This leads to a need to understand their bioavailability to plants. In the present study, the mechanisms of uptake and distribution of silver in alfalfa (Medicago sativa) were quantified and visualized upon hydroponic exposure to Ag-NPs, Ag2S-NPs, and AgNO3 at 3 mg total Ag/L. Total silver uptake was measured in dried roots and shoots, and the spatial distribution of elements was investigated using transmission electron microscopy (TEM) and synchrotron-based X-ray imaging techniques. Despite large differences in release of Ag(+) ions from the particles, Ag-NPs, Ag2S-NPs, and Ag(+) became associated with plant roots to a similar degree, and exhibited similarly limited (<1%) amounts of translocation of silver into the shoot system. X-ray fluorescence (XRF) mapping revealed differences in the distribution of Ag into roots for each treatment. Silver nanoparticles mainly accumulated in the (columella) border cells and elongation zone, whereas Ag(+) accumulated more uniformly throughout the root. In contrast, Ag2S-NPs remained largely adhered to the root exterior, and the presence of cytoplasmic nano-SixOy aggregates was observed. Exclusively in roots exposed to particulate silver, NPs smaller than the originally dosed NPs were identified by TEM in the cell walls. The apparent accumulation of Ag in the root apoplast determined by XRF, and the presence of small NPs in root cell walls suggests uptake of partially dissolved NPs and translocation along the apoplast.
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Affiliation(s)
| | | | - Benjamin P Colman
- ∥Department of Biology, Duke University, Durham, North Carolina 27708, United States
| | - Samuel M Webb
- ⊥Stanford Synchrotron Radiation Lightsource, Stanford University, Menlo Park, California 94025, United States
| | - Matthew Newville
- #Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Antonio Lanzirotti
- #Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Christopher Winkler
- ⊗ICTAS Nanoscale Characterization and Fabrication Laboratory, Virginia Tech, Blacksburg, Virginia 24061, United States
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Mateos-Naranjo E, Gallé A, Florez-Sarasa I, Perdomo JA, Galmés J, Ribas-Carbó M, Flexas J. Assessment of the role of silicon in the Cu-tolerance of the C4 grass Spartina densiflora. JOURNAL OF PLANT PHYSIOLOGY 2015; 178:74-83. [PMID: 25800224 DOI: 10.1016/j.jplph.2015.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 03/02/2015] [Accepted: 03/02/2015] [Indexed: 05/04/2023]
Abstract
An experiment was designed to investigate the effect of silicon supply (0 and 500 μM) on Spartina densiflora plants grown at two copper (Cu) concentrations: 0 and 15 mM. Growth parameters together with total concentrations of calcium, Cu, potassium, magnesium, manganese, sodium and nitrogen were determined in roots and leaves. Photosynthetic traits were followed by measurement of leaf gas exchange, efficiency of PSII biochemistry, total content of photosynthetic pigments and concentration and carbamylation of Rubisco sites concentration ([Rubisco]). Respiration and oxygen isotope fractionation were measured in roots to study the in vivo activities of cytochrome oxidase (COX) and alternative oxidase (AOX) pathways, as well as AOX capacity. The results confirm that Si supply improves growth of S. densiflora under Cu stress. Improved growth was associated with higher net photosynthetic rate. Beneficial effect of Si on S. densiflora photosynthetic apparatus was associated with a reduction of the Cu impact on active Rubisco sites, as well as on the photochemical apparatus and chlorophyll concentration. Moreover, ameliorative effects of Si were associated with the avoidance of Cu translocation from roots to leaves. Finally in vivo activities of COX and AOX pathways were strongly inhibited in Cu-treated plants, and this reduction was not mitigated by Si-treatment. Therefore, Si appears to play an important role in Cu-tolerance of S. densiflora, not by avoiding its uptake by roots, but via some mechanism to avoid Cu translocation from roots to leaves, resulting in a general reduction of Cu-induced deleterious effects on the leaf photosynthetic apparatus.
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Affiliation(s)
- Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain.
| | - Alexander Gallé
- Grup de Recerca en Biologia de les Plantes Mediterrànies, Departament de Biologia (UIB-IMEDEA), Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Balears, Spain
| | - Igor Florez-Sarasa
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Juan Alejandro Perdomo
- Grup de Recerca en Biologia de les Plantes Mediterrànies, Departament de Biologia (UIB-IMEDEA), Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Balears, Spain
| | - Jeroni Galmés
- Grup de Recerca en Biologia de les Plantes Mediterrànies, Departament de Biologia (UIB-IMEDEA), Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Balears, Spain
| | - Miquel Ribas-Carbó
- Grup de Recerca en Biologia de les Plantes Mediterrànies, Departament de Biologia (UIB-IMEDEA), Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Balears, Spain
| | - Jaume Flexas
- Grup de Recerca en Biologia de les Plantes Mediterrànies, Departament de Biologia (UIB-IMEDEA), Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Balears, Spain
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32
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Keller C, Rizwan M, Davidian JC, Pokrovsky OS, Bovet N, Chaurand P, Meunier JD. Effect of silicon on wheat seedlings (Triticum turgidum L.) grown in hydroponics and exposed to 0 to 30 µM Cu. PLANTA 2015; 241:847-60. [PMID: 25515193 DOI: 10.1007/s00425-014-2220-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 12/02/2014] [Indexed: 05/24/2023]
Abstract
Aqueous Si limits Cu uptake by a Si-accumulating plant via physicochemical mechanisms occurring at the root level. Sufficient Si supply may alleviate Cu toxicity in Cu-contaminated soils. Little information is available on the role of silicon (Si) in copper (Cu) tolerance while Cu toxicity is widespread in crops grown on Cu-contaminated soils. A hydroponic study was set up to investigate the influence of Si on Cu tolerance in durum wheat (Triticum turgidum L.) grown in 0, 0.7, 7.0 and 30 µM Cu without and with 1.0 mM Si, and to identify the mechanisms involved in mitigation of Cu toxicity. Si supply alleviated Cu toxicity in durum wheat at 30 µM Cu, while Cu significantly increased Si concentration in roots. Root length, photosynthetic pigments concentrations, macroelements, and organic anions (malate, acetate and aconitate) in roots, were also increased. Desorption experiments, XPS analysis of the outer thin root surface (≤100 Å) and µXRF analyses showed that Si increased adsorption of Cu at the root surface as well as Cu accumulation in the epidermis while Cu was localised in the central cylinder when Si was not applied. Copper was not detected in phytoliths. This study provides evidences for Si-mediated alleviation of Cu toxicity in durum wheat. It also shows that Si supplementation to plants exposed to increasing levels of Cu in solution induces non-simultaneous changes in physiological parameters. We propose a three-step mechanism occurring mainly at the root level and limiting Cu uptake and translocation to shoots: (i) increased Cu adsorption onto the outer thin layer root surface and immobilisation in the vicinity of root epidermis, (ii) increased Cu complexation by both inorganic and organic anions such as aconitate and, (iii) limitation of translocation through an enhanced thickening of a Si-loaded endodermis.
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Affiliation(s)
- C Keller
- CEREGE, UMR AMU-CNRS 7330, Aix-Marseille Univ., Technopôle de l'Environnement Arbois-Méditerranée, 13545, Aix en Provence Cedex 4, France,
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Dimkpa CO, McLean JE, Britt DW, Anderson AJ. Nano-CuO and interaction with nano-ZnO or soil bacterium provide evidence for the interference of nanoparticles in metal nutrition of plants. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:119-29. [PMID: 25297564 DOI: 10.1007/s10646-014-1364-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/04/2014] [Indexed: 05/21/2023]
Abstract
The expansion of nanotechnology raises concerns about the consequences of nanomaterials in plants. Here, the effects of nanoparticles (NPs; 100-500 mg/kg) on processes related to micronutrient accumulation were evaluated in bean (Phaseolus vulgaris) exposed to CuO NPs, a mixture of CuO and ZnO (CuO:ZnO) NPs, and in CuO NP-exposed plants colonized by a root bacterium, Pseudomonas chlororaphis O6 (PcO6) in a sand matrix for 7 days. Depending on exposure levels, the inhibition of growth by CuO NPs was more apparent in roots (10-66 %) than shoots (9-25 %). In contrast, CuO:ZnO NPs or root colonization with PcO6 partially mitigated growth inhibition. At 500 mg/kg exposure, CuO NPs increased soluble Cu in the growth matrix by 23-fold, relative to the control, while CuO:ZnO NPs increased soluble Cu (26-fold), Zn (127-fold) and Ca (4.5-fold), but reduced levels of Fe (0.8-fold) and Mn (0.75-fold). Shoot accumulations of Cu (3.8-fold) and Na (1-fold) increased, while those of Fe (0.4-fold), Mn (0.2-fold), Zn (0.5-fold) and Ca (0.5-fold) were reduced with CuO NP (500 mg/kg) exposure. CuO:ZnO NPs also increased shoot Cu, Zn and Na levels, while decreasing that of Fe, Mn, Ca and Mg. Root colonization reduced shoot uptake of Cu and Na, 15 and 24 %, respectively. CuO NPs inhibited ferric reductase (up to 49 %) but stimulated cupric (up to 273 %) reductase activity; while CuO:ZnO NPs or root colonization by PcO6 altered levels of ferric, but not copper reductase activity, relative to CuO NPs. Cu ions at the level released from the NPs did not duplicate these effects. Our findings demonstrate that in addition to the apparent phytotoxic effects of NPs, NP exposure may also have subtle impacts on secondary processes such as metal nutrition.
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