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Xue C, Liu R, Xia Z, Jia J, Hu B, Rennenberg H. Sulfur availability and nodulation modify the response of Robinia pseudoacacia L. to lead (Pb) exposure. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135612. [PMID: 39182290 DOI: 10.1016/j.jhazmat.2024.135612] [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: 04/08/2024] [Revised: 08/18/2024] [Accepted: 08/20/2024] [Indexed: 08/27/2024]
Abstract
Both sulfur (S) supply and legume-rhizobium symbiosis can significantly contribute to enhancing the efficiency of phytoremediation of heavy metals (HMs). However, the regulatory mechanism determining the performance of legumes at lead (Pb) exposure have not been elucidated. Here, we cultivated black locust (Robinia pseudoacacia L.), a leguminous woody pioneer species at three S supply levels (i.e., deficient, moderate, and high S) with rhizobia inoculation and investigated the interaction of these treatments upon Pb exposure. Our results revealed that the root system of Robinia has a strong Pb accumulation and anti-oxidative capacity that protect the leaves from Pb toxicity. Compared with moderate S supply, high S supply significantly increased Pb accumulation in roots by promoting the synthesis of reduced S compounds (i.e., thiols, phytochelatin), and also strengthened the antioxidant system in leaves. Weakened defense at deficient S supply was indicated by enhanced oxidative damage. Rhizobia inoculation alleviated the oxidative damage of its Robinia host by immobilizing Pb to reduce its absorption by root cells. Together with enhanced Pb chelation in leaves, these mechanisms strengthen Pb detoxification in the Robinia-rhizobia symbiosis. Our results indicate that appropriate S supply can improve the defense of legume-rhizobia symbiosis against HM toxicity.
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Affiliation(s)
- Caixin Xue
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Rui Liu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Zhuyuan Xia
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Jin Jia
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400715, PR China
| | - Bin Hu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400715, PR China.
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400715, PR China
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Zulkernain NH, Uvarajan T, Ng CC. Roles and significance of chelating agents for potentially toxic elements (PTEs) phytoremediation in soil: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 341:117926. [PMID: 37163837 DOI: 10.1016/j.jenvman.2023.117926] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 05/12/2023]
Abstract
Phytoremediation is a biological remediation technique known for low-cost technology and environmentally friendly approach, which employs plants to extract, stabilise, and transform various compounds, such as potentially toxic elements (PTEs), in the soil or water. Recent developments in utilising chelating agents soil remediation have led to a renewed interest in chelate-induced phytoremediation. This review article summarises the roles of various chelating agents and the mechanisms of chelate-induced phytoremediation. This paper also discusses the recent findings on the impacts of chelating agents on PTEs uptake and plant growth and development in phytoremediation. It was found that the chelating agents have increased the rate of metal absorption and translocation up to 45% from roots to the aboveground plant parts during PTEs phytoremediation. Besides, it was also explored that the plants may experience some phytotoxicity after adding chelating agents to the soil. However, due to the leaching potential of synthetic chelating agents, the use of organic chelants have been explored to be used in PTEs phytoremediation. Finally, this paper also presents comprehensive insights on the significance of using chelating agents through SWOT analysis to discuss the advantages and limitations of chelate-induced phytoremediation.
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Affiliation(s)
- Nur Hanis Zulkernain
- China-ASEAN College of Marine Sciences, Xiamen University, Malaysia (XMUM), Sepang, Selangor Darul Ehsan, Malaysia; School of Postgraduate Studies, Research and Internationalisation, Faculty of Integrated Life Sciences, Quest International University, Malaysia
| | - Turkeswari Uvarajan
- School of Postgraduate Studies, Research and Internationalisation, Faculty of Integrated Life Sciences, Quest International University, Malaysia
| | - Chuck Chuan Ng
- China-ASEAN College of Marine Sciences, Xiamen University, Malaysia (XMUM), Sepang, Selangor Darul Ehsan, Malaysia.
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Günthardt-Goerg MS, Schläpfer R, Vollenweider P. Responses to Airborne Ozone and Soilborne Metal Pollution in Afforestation Plants with Different Life Forms. PLANTS (BASEL, SWITZERLAND) 2023; 12:3011. [PMID: 37631222 PMCID: PMC10458031 DOI: 10.3390/plants12163011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/12/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
With the current increases in environmental stress, understanding species-specific responses to multiple stress agents is needed. This science is especially important for managing ecosystems that are already confronted with considerable pollution. In this study, responses to ozone (O3, ambient daily course values + 20 ppb) and mixed metal contamination in soils (MC, cadmium/copper/lead/zinc = 25/1100/2500/1600 mg kg-1), separately and in combination, were evaluated for three plant species (Picea abies, Acer pseudoplatanus, Tanacetum vulgare) with different life forms and ecological strategies. The two treatments elicited similar stress reactions, as shown by leaf functional traits, gas exchange, tannin, and nutrient markers, irrespective of the plant species and life form, whereas the reactions to the treatments differed in magnitude. Visible and microscopic injuries at the organ or cell level appeared along the penetration route of ozone and metal contamination. At the whole plant level, the MC treatment caused more severe injuries than the O3 treatment and few interactions were observed between the two stress factors. Picea trees, with a slow-return strategy, showed the highest stress tolerance in apparent relation to an enhancement of conservative traits and an exclusion of stress agents. The ruderal and more acquisitive Tanacetum forbs translocated large amounts of contaminants above ground, which may be of concern in a phytostabilisation context. The deciduous Acer trees-also with an acquisitive strategy-were most sensitive to both stress factors. Hence, species with slow-return strategies may be of particular interest for managing metal-polluted sites in the current context of multiple stressors and for safely confining soil contaminants below ground.
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Affiliation(s)
- Madeleine S. Günthardt-Goerg
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland;
| | - Rodolphe Schläpfer
- EPFL ENAC IIE Plant Ecology Research Laboratory, GR B2 407 Station 2, CH-1015 Lausanne, Switzerland;
| | - Pierre Vollenweider
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland;
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Yap CK, Chew W, Al-Mutairi KA, Al-Shami SA, Nulit R, Ibrahim MH, Wong KW, Bakhtiari AR, Sharifinia M, Cheng WH, Okamura H, Ismail MS, Saleem M. Invasive Weed Asystasia gangetica as a Potential Biomonitor and a Phytoremediator of Potentially Toxic Metals: A Case Study in Peninsular Malaysia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18094682. [PMID: 33924835 PMCID: PMC8124176 DOI: 10.3390/ijerph18094682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/26/2021] [Accepted: 03/26/2021] [Indexed: 12/14/2022]
Abstract
The invasive weed Asystasia gangetica was investigated for its potential as a biomonitor and as a phytoremediator of potentially toxic metals (PTMs) (Cd, Cu, Ni, Pb, and Zn) in Peninsular Malaysia owing to its ecological resistance towards unfavourable environments. The biomonitoring potential of PTMs was determined based on the correlation analysis of the metals in the different parts of the plant (leaves, stems, and roots) and its habitat topsoils. In the roots, the concentrations (mg/kg dry weight) of Cd, Cu, Ni, Pb, and Zn ranged from 0.03 to 2.18, 9.22 to 139, 0.63 to 5.47, 2.43 to 10.5, and 50.7 to 300, respectively. In the leaves, the concentrations (mg/kg dry weight) of Cd, Cu, Ni, Pb, and Zn ranged from 0.03 to 1.16, 7.94 to 20.2, 0.03 to 6.13, 2.10 to 21.8, and 18.8 to 160, respectively. In the stems, the concentrations (mg/kg dry weight) of Cd, Cu, Ni, Pb, and Zn ranged from 0.03 to 1.25, 5.57 to 11.8, 0.23 to 3.69, 0.01 to 7.79, and 26.4 to 246, respectively. On the other hand, the phytoremediation potential of the five metals was estimated based on the bioconcentration factor (BCF) and the translocation factor (TF) values. Correlation analysis revealed that the roots and stems could be used as biomonitors of Cu, the stems as biomonitors of Ni, the roots and leaves as biomonitors of Pb, and all three parts of the plant as biomonitors of Zn. According to the BCF values, in the topsoil, the “easily, freely, leachable, or exchangeable” geochemical fractions of the five metals could be more easily transferred to the roots, leaves, and stems when compared with total concentrations. Based on the TF values of Cd, Ni, and Pb, the metal transfer to the stems (or leaves) from the roots was efficient (>1.0) at most sampling sites. The results of BCF and TF showed that A. gangetica was a good phytoextractor for Cd and Ni, and a good phytostabilizer for Cu, Pb, and Zn. Therefore, A. gangetica is a good candidate as a biomonitor and a phytoremediator of Ni, Pb, and Zn for sustainable contaminant remediation subject to suitable field management strategies.
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Affiliation(s)
- Chee Kong Yap
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (W.C.); (R.N.); (M.H.I.); (K.W.W.)
- Correspondence:
| | - Weiyun Chew
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (W.C.); (R.N.); (M.H.I.); (K.W.W.)
| | | | - Salman Abdo Al-Shami
- Indian River Research and Education Center, IFAS, University of Florida, Fort Pierce, FL 34945, USA;
| | - Rosimah Nulit
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (W.C.); (R.N.); (M.H.I.); (K.W.W.)
| | - Mohd Hafiz Ibrahim
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (W.C.); (R.N.); (M.H.I.); (K.W.W.)
| | - Koe Wei Wong
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (W.C.); (R.N.); (M.H.I.); (K.W.W.)
| | - Alireza Riyahi Bakhtiari
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor 46417-76489, Iran;
| | - Moslem Sharifinia
- Shrimp Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Bushehr 75169-89177, Iran;
| | - Wan Hee Cheng
- Faculty of Health and Life Sciences, Inti International University, Persiaran Perdana BBN, Nilai 71800, Malaysia;
| | - Hideo Okamura
- Graduate School of Maritime Sciences, Faculty of Maritime Sciences, Kobe University, Kobe 658-0022, Japan;
| | | | - Muhammad Saleem
- Department of Chemistry, Government Post Graduate College Mirpur, Affiliated Mirpur University of Science and Technology, Mirpur 10250, Pakistan;
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Haller H, Jonsson A. Growing food in polluted soils: A review of risks and opportunities associated with combined phytoremediation and food production (CPFP). CHEMOSPHERE 2020; 254:126826. [PMID: 32335444 DOI: 10.1016/j.chemosphere.2020.126826] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Innumerable private households and small-scale producers currently operate on polluted soils. Phytoremediation is one of the most cost-effective remediation options but as a stand-alone technology, it is often not lucrative enough to make it appealing for farmers, especially in economically vulnerable regions. Economic incentives are crucial for remediation projects to materialise and synergies can be obtained by integrating phytoremediation with other profitable activities including food production. This review aims to synthesise state-of-the-art scientific data to provide a general understanding of opportunities and risks for sustainable remediation of agricultural soil by the use of combined phytoremediation and food production (CPFP). The results show that strategies based on CPFP may be appropriate options for most pollutants in virtually all climatic or socioeconomic contexts but a number of challenges need to be surpassed. The challenges include remediation-technological issues such as undeveloped post-harvest technology and inadequate soil governance. The need for remediation solutions for polluted fields is increasingly urgent since many farmers currently operate on polluted land and the scarcity of soil resources as the human population continuously increases will inevitably force more farmers to cultivate in contaminated areas. We conclude that, although large scale CPFP has not yet reached technological maturity, appropriate combinations of soil types, plant species/cultivars, and agronomic practices together with thorough monitoring of the pollutants' pathways can potentially allow for safe food production on polluted soil that restricts the transfer of a number of pollutants to the food chain while the soil pool of pollutants is gradually reduced.
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Affiliation(s)
- Henrik Haller
- Department of Ecotechnology and Sustainable Building Engineering, Mid Sweden University, Sweden.
| | - Anders Jonsson
- Department of Ecotechnology and Sustainable Building Engineering, Mid Sweden University, Sweden
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Sailer C, Babst-Kostecka A, Fischer MC, Zoller S, Widmer A, Vollenweider P, Gugerli F, Rellstab C. Transmembrane transport and stress response genes play an important role in adaptation of Arabidopsis halleri to metalliferous soils. Sci Rep 2018; 8:16085. [PMID: 30382172 PMCID: PMC6208402 DOI: 10.1038/s41598-018-33938-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 10/09/2018] [Indexed: 12/17/2022] Open
Abstract
When plants adapt to local environments, strong signatures of selection are expected in the genome, particularly in high-stress environments such as trace metal element enriched (metalliferous) soils. Using Arabidopsis halleri, a model species for metal homeostasis and adaptation to extreme environments, we identifid genes, gene variants, and pathways that are associated with soil properties and may thus contribute to adaptation to high concentrations of trace metal elements. We analysed whole-genome Pool-seq data from two metallicolous (from metalliferous soils) and two non-metallicolous populations (in total 119 individuals) and associated allele frequencies of the identified single-nucleotide polymorphisms (SNPs) with soil variables measured on site. Additionally, we accounted for polygenic adaptation by searching for gene pathways showing enrichment of signatures of selection. Out of >2.5 million SNPs, we identified 57 SNPs in 19 genes that were significantly associated with soil variables and are members of three enriched pathways. At least three of these candidate genes and pathways are involved in transmembrane transport and/or associated with responses to various stresses such as oxidative stress. We conclude that both allocation and detoxification processes play a crucial role in A. halleri for coping with these unfavourable conditions.
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Affiliation(s)
- Christian Sailer
- WSL Swiss Federal Research Institute, Birmensdorf, 8903, Switzerland.
- ETH Zürich, Institute of Integrative Biology, Zürich, 8092, Switzerland.
| | | | - Martin C Fischer
- ETH Zürich, Institute of Integrative Biology, Zürich, 8092, Switzerland
| | - Stefan Zoller
- ETH Zürich, Genetic Diversity Centre, Zürich, 8092, Switzerland
| | - Alex Widmer
- ETH Zürich, Institute of Integrative Biology, Zürich, 8092, Switzerland
| | | | - Felix Gugerli
- WSL Swiss Federal Research Institute, Birmensdorf, 8903, Switzerland
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Dilks RT, Monette F, Glaus M. The major parameters on biomass pyrolysis for hyperaccumulative plants--A review. CHEMOSPHERE 2016; 146:385-95. [PMID: 26741543 DOI: 10.1016/j.chemosphere.2015.12.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 12/11/2015] [Accepted: 12/17/2015] [Indexed: 05/24/2023]
Abstract
Phytoextraction is one of the main phytoremediation techniques and it has often been described as a potentially feasible in situ soil decontamination method of large amounts of heavy metals, organic pollutants and explosive compounds. As this remediation technique is approaching extensive on-field experimentation and commercialization, research focus is on investigating new ways to achieve the valorisation of its by-products. Biomass pyrolysis represents a key step to numerous valorisation options and it is characterized by differential output products that are determined by the operating conditions of the process and the characteristics of the input. However, when used to valorise plants that have undergone significant metal uptake, this strategy involves some new aspects related to harvest, procedure and final product reutilization. This paper reviews the studies made on biomass pyrolysis of plants with emphasis on the differential quality and distribution of pyrolysis products in relation with the variables of the process and the metal-rich phytoextraction feedstock properties. By investigating these parameters, this survey provides indications on ways to optimize the valorisation of phytoremediation by-products through biomass pyrolysis.
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Affiliation(s)
- R T Dilks
- École de technologie supérieure - Université du Québec, Construction Engineering Department, 1100 Notre-Dame Street West, Montreal, Quebec, H3C 1K3, Canada.
| | - F Monette
- École de technologie supérieure - Université du Québec, Construction Engineering Department, 1100 Notre-Dame Street West, Montreal, Quebec, H3C 1K3, Canada.
| | - M Glaus
- École de technologie supérieure - Université du Québec, Construction Engineering Department, 1100 Notre-Dame Street West, Montreal, Quebec, H3C 1K3, Canada.
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Houda Z, Bejaoui Z, Albouchi A, Gupta DK, Corpas FJ. Comparative study of plant growth of two poplar tree species irrigated with treated wastewater, with particular reference to accumulation of heavy metals (Cd, Pb, As, and Ni). ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:99. [PMID: 26780418 DOI: 10.1007/s10661-016-5102-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 01/06/2016] [Indexed: 05/06/2023]
Abstract
Water is a scarce natural resource around the world which can hamper the socio-economic development of many countries. The Mediterranean area, especially north Africa, is known for its semi-arid to arid climate, causing serious water supply problems. Treated wastewater (TWW) is being used as an alternative strategy for recycling wastewater. It is also a potential source of nutrients for reforestation with certain plant species such as poplar trees, a useful wood resource, and even for phytoremediation purposes. In the present study, we used treated wastewater to irrigate two clones of 1-year-old poplar trees (Populus nigra cv. I-488 and Populus alba cv. MA-104) for 90 days. After a stipulated time, a comparative study was made of the effects of TWW on growth parameters, acquisition of essential minerals (Na, Fe and Zn) and pollutants (Cd, Pb, As and Ni) as well as the enrichment of secondary metabolites such as polyphenolic, flavonoid and tannin compounds which could contribute to the growth and development of poplar plants. The results of this study show that the use of TWW increased P. alba's biomass production by 36% and also enhanced its Cd and Pb accumulation capacity. We also found that P. alba has considerable potential to be used as an alternative plant species for reforestation and/or phytoremediation of toxic metals from contaminated water or effluent.
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Affiliation(s)
- Zarati Houda
- Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, Apartado 419, 18080, Granada, Spain
- Agroforestry Unit of the National Institute for Research in Rural Engineering Water and Forestry (INRGREF) of Tunisia, Tunis, Tunisia
- Faculty of Sciences of Bizerte Zarzouna Tunisia, University Tunis Carthage, Zarzouna, Tunisia
| | - Zoubeir Bejaoui
- Agroforestry Unit of the National Institute for Research in Rural Engineering Water and Forestry (INRGREF) of Tunisia, Tunis, Tunisia
| | - Ali Albouchi
- Agroforestry Unit of the National Institute for Research in Rural Engineering Water and Forestry (INRGREF) of Tunisia, Tunis, Tunisia
| | - Dharmendra K Gupta
- Institut für Radioökologie und Strahlenschutz (IRS), Gottfried Wilhelm Leibniz Universität Hannover, Herrenhäuser Str. 2, 30419, Hannover, Germany
| | - Francisco J Corpas
- Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, Apartado 419, 18080, Granada, Spain.
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Sluchyk V, Sluchyk I, Shyichuk A. Assessment of both environmental cytotoxicity and trace metal pollution using Populus simonii Carr. as a bioindicator. ENVIRONMENTAL MONITORING AND ASSESSMENT 2014; 186:6645-6650. [PMID: 24942519 DOI: 10.1007/s10661-014-3879-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 06/11/2014] [Indexed: 06/03/2023]
Abstract
The level of environmental pollution in the city of Ivano-Frankivsk (Western Ukraine) has been assessed by means of roadside poplar trees as bioindicators. Dividable apical meristem cells of rudimentary leaves were quantitatively analysed for mitotic activity and distribution. Anaphases were further examined for chromosomal aberrations. Male catkins were also examined for sterile pollens. Accumulation of trace elements in vegetative buds was also evaluated in order to reveal source(s) of environmental pollution. Poplar trees growing in the urban environment proved to have increased chromosomal aberrations (up to 4-fold) and increased pollen sterility (up to 4-fold) as well as decreased mitotic activity (by factor 1.5) as compared to control sampling site. The biomarker data correlate moderately with increased (up to 4-fold) concentrations of Ni, Zn, Pb, Cd and Cu in vegetative tissues suggesting that probable cause of the environmental cytotoxicity may be vehicle emissions. The maximum increase in chromosomal aberrations (7-fold) and the minimum mitotic activity (half of the control one) were recorded in poplar trees growing in industrial suburb in vicinity of large cement production plant. Taking in mind insignificant bioaccumulation of trace elements in the industrial suburb, the high environmental toxicity has been ascribed to contamination in cement and asbestos particulates.
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Affiliation(s)
- Victor Sluchyk
- Department of Biology and Ecology, Vasyl' Stefanyk Precarpathian National University, Shevchenka 57, Ivano-Frankivsk, 76000, Ukraine
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Juan Miguel GB, Ofelia MB, Esther Aurora RH, Maria Aurora AH, Dávila Osiel G. "Microscopic evidences of heavy metals distribution and anatomic alterations in breaching-leaves of Cupressus lindleyi growing around mining wastes". Microsc Res Tech 2014; 77:714-26. [PMID: 24919681 DOI: 10.1002/jemt.22392] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/15/2014] [Accepted: 05/31/2014] [Indexed: 11/07/2022]
Abstract
In this article a study of the distribution of heavy metals in Cupressus lindleyi breaching-leaves was done in Taxco, Guerrero. At the same, heavy metals micro-localization was conducted in the breaching-leaves to understand the structural changes provoked by mining waste on plants. The most abundant contaminants in soils, tailings and different plant organs (roots, stems, and leaves) were Zn, Mn, and Pb. Nevertheless, As was more accumulated in the stem and breaching-leaves. The translocation factor and the bio-concentration factor were less than 1. The structural changes observed were the great accumulation of starch grains and phenolic compounds in the palisade parenchyma, changes in the hypodermis cell wall and necrotic zones in the palisade parenchyma. The distribution of heavy metals in breaching-leaves tissues was homogeneous in most of the elements. These results showed that C. lindleyi is a species that can be employed in phytostabilization of contaminated zones with mining waste because it is a native plant that does not require a lot of conditions for its development.
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Affiliation(s)
- Gómez-Bernal Juan Miguel
- Posgrado en Ciencias de la Tierra, Instituto de Geofísica, Universidad Nacional Autónoma de México (UNAM), México
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Abstract
It is known that heavy metals are taken up and translocated by plants to different degrees. Phytoremediation, the use of plants to decontaminate soil by taking up heavy metals, shows considerable promise as a low-cost technique and has received much attention in recent years. However, its application is still very limited due to low biomass of hyperaccumulators, unavailability of the suitable plant species and long growing seasons required. Therefore, to maximize phytoextraction efficiency, it is important to select a fast-growing and high-biomass plant with high uptake of heavy metals, which is also compatible with mechanized cultivation techniques and local weather conditions. Trees in particular have a number of attributes (e.g. high biomass, economic value), which make them attractive plants for such a use. This paper reviews the potential for the phytoremediation of heavy metal-contaminated land by trees. In summary, we present the research progress of phytoremediation by trees and suggest ways in which this concept can be applied and improved.
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12
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Natural Vegetation, Metal Accumulation and Tolerance in Plants Growing on Heavy Metal Rich Soils. SOIL BIOLOGY 2012. [DOI: 10.1007/978-3-642-23327-2_12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Reboredo F. Zinc compartmentation in Halimione portulacoides (L.) Aellen and some effects on leaf ultrastructure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2011; 19:2644-57. [PMID: 22293906 DOI: 10.1007/s11356-012-0757-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 01/12/2012] [Indexed: 05/10/2023]
Abstract
INTRODUCTION The halophyte Halimione portulacoides collected in a polluted area of the river Sado estuary (Portugal) and obtained from hydroponic cultures was used to evaluate the compartmentation of Zn and its preferential binding sites. In parallel, we tried to assess if the minimum available Zn concentration found in marsh soil induces changes at the ultrastructural level. MATERIALS AND METHODS A sequential extraction method was used to study the Zn compartmentation within the cell. Both dried plant samples and extracts/residues from compartmentation studies were digested by HNO3–HClO4 (4:1) until dryness and analyzed by atomic absorption spectrophotometry. Segments of young leaves, previously exposed to Zn were fixed in glutaraldehyde and osmium tetroxide. Ultrathin sections were stained and examined by transmission electron microscopy at 80 kV. RESULTS AND DISCUSSION Proteins and carbohydrates of the cell walls constitute preferential binding sites of Zn, containing between 25% and 33% and between 30% and 40% of the total, respectively. Hydroponic plants accumulate Zn in their leaves up to (194 μg g−1) without visible damage or changes in the protein and chlorophyll concentrations, compared with the controls. Chlorenchyma chloroplasts of Zn-treated plants exhibited an unusual number of starch grains, which can be seen as an alert mechanism. CONCLUSIONS AND PERSPECTIVES Although so far the levels of Zn in the leaves within the studied area have not reached high values, monitoring them remains a priority. Also, issues related with starch synthesis and organic ligands must be evaluated. The understanding of the predictable behavior of this halophyte is our main goal, and the results here presented can contribute to this achievement.
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Affiliation(s)
- Fernando Reboredo
- Departmento de Ciências e Tecnologia da Biomassa, Faculdade de Ciências e Tecnologia,Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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Vollenweider P, Menard T, Günthardt-Goerg MS. Compartmentation of metals in foliage of Populus tremula grown on soils with mixed contamination. I. From the tree crown to leaf cell level. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2011; 159:324-336. [PMID: 20822838 DOI: 10.1016/j.envpol.2010.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 07/07/2010] [Accepted: 07/16/2010] [Indexed: 05/29/2023]
Abstract
In order to achieve efficient phytoextraction of heavy metals using trees, the metal allocation to aboveground tissues needs to be characterised. In his study, the distribution of heavy metals, macro- and micronutrients and the metal micro-localisation as a function of the leaf position and heavy metal treatment were analysed in poplars grown on soil with mixed metal contamination. Zinc was the most abundant contaminant in both soil and foliage and, together with cadmium, was preferentially accumulated in older foliage whereas excess copper and lead were not translocated. Changes in other element concentrations indicated an acceleration in aging as a consequence of the metal treatment. Excess zinc was irregularly accumulated inside leaf tissues, tended to saturate the veins and was more frequently stored in cell symplast than apoplast. Storage compartments including metabolically safe and sensitive subcellular sites resulted in sizable metal accumulation as well as stress reactions.
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Affiliation(s)
- Pierre Vollenweider
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, 8903 Birmensdorf, Switzerland.
| | - Terry Menard
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
| | - Madeleine S Günthardt-Goerg
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
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