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Tóth C, Simon L, Tóth B. Microanatomical Changes in the Leaves of Arundo donax (L.) Caused by Potentially Toxic Elements from Municipal Sewage Sediment. PLANTS (BASEL, SWITZERLAND) 2024; 13:740. [PMID: 38475586 DOI: 10.3390/plants13050740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024]
Abstract
An open-field 3-year-long microplot experiment was set up with three micropropagated lines (SC Blossom, BFT Indiana, and STM Hajdúsági) of giant reed (Arundo donax L.). Plants were grown on a soil cover of a former sewage settling pond located in Debrecen Lovász-Zug, Hungary. Soil cover of the sewage sediment was moderately contaminated with various toxic elements (As, Ba, Cd, Cr, Cu, Mn, Ni, Pb, and Zn). The highest total concentration of examined toxic elements in leaves was found in the BFT Indiana line (∑326 mg/kg), while in the SC Blossom and STM Hajdúsági lines, ∑210 mg/kg and ∑182 mg/kg were measured, respectively. The highest Zn concentration (117 mg/kg) was found in the leaves of in BFT Indiana line and was 67% higher than that in SC Blossom and 95% more than in the STM Hajdúsági line. The BFT Indiana leaves showed typical signs of adaptation to heavy metal stress in the case of numerous micromorphometric characteristics. The extent of leaf mesophylls decreased, and the number of bulliform cells and phytoliths, as well as the sclerenchymatous stock, increased. The size of the vascular bundles was reduced. The size of the stomata decreased while the stomatal density increased. It can be concluded that the BFT Indiana line had the best adaptational response to heavy metal stress.
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Affiliation(s)
- Csilla Tóth
- Department of Agricultural Sciences and Environmental Management, Institute of Engineering and Agricultural Sciences, University of Nyíregyháza, Sóstói Str. 31/b, H-4400 Nyíregyháza, Hungary
| | - László Simon
- Department of Agricultural Sciences and Environmental Management, Institute of Engineering and Agricultural Sciences, University of Nyíregyháza, Sóstói Str. 31/b, H-4400 Nyíregyháza, Hungary
| | - Brigitta Tóth
- Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Str. 138, H-4032 Debrecen, Hungary
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Miletić Z, Marković M, Jarić S, Radulović N, Sekulić D, Mitrović M, Pavlović P. Lithium and strontium accumulation in native and invasive plants of the Sava River: Implications for bioindication and phytoremediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 270:115875. [PMID: 38142593 DOI: 10.1016/j.ecoenv.2023.115875] [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: 09/11/2023] [Revised: 11/20/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
The objective of this study was to investigate the potential of native and invasive plant species for the uptake and accumulation of lithium (Li) and strontium (Sr) along the Sava River, focusing on their bioindication and phytoremediation capabilities. Sampling was carried out in riparian zones exposed to different pollution sources in Slovenia, Croatia, and Serbia. Plant samples of native (Salix alba, Populus alba, Populus nigra, Ulmus glabra, Juglans regia) and invasive (Amorpha fruticosa, Reynoutria japonica, Solidago canadensis, Impatiens glandulifera) species were collected. The content of Li and Sr was analyzed in the soils, roots, and leaves of the selected plants, as well as physical and chemical soil properties. Both Li and Sr content in the soils increased from the source to the mouth of the Sava River. The native species showed significant potential for Li and Sr accumulation based on the metal accumulation index. The highest Sr accumulation was measured in the leaves of Salix alba and the roots of Juglans regia, while the highest Li accumulation was measured in Ulmus glabra. Native species, especially Salix alba, proved to be better bioindicators of Li and Sr. Invasive species, especially Amorpha fruticosa and Impatiens glandulifera, showed a remarkable ability to translocate Sr and Li, respectively, to leaves. These results provide valuable insight into the suitability of plants for biomonitoring soil contamination and potential applications in phytoremediation strategies. In summary, the study shows the importance of native species in the context of the accumulation and bioindication of soil pollution.
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Affiliation(s)
- Zorana Miletić
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia.
| | - Milica Marković
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia
| | - Snežana Jarić
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia
| | - Natalija Radulović
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia
| | - Dimitrije Sekulić
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia
| | - Miroslava Mitrović
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia
| | - Pavle Pavlović
- Department of Ecology, Institute for Biological Research 'Siniša Stanković', University of Belgrade, Bulevar despota Stefana 142, Belgrade, Serbia
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Sipos B, Bibi D, Magura T, Tóthmérész B, Simon E. High phytoremediation and translocation potential of an invasive weed species (Amaranthus retroflexus) in Europe in metal-contaminated areas. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:790. [PMID: 37261518 DOI: 10.1007/s10661-023-11422-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
We demonstrated the metal accumulation potential of Amaranthus retorflexus, a European weed species, both in moderately and strongly metal-contaminated sites. Metal accumulation in roots, stems, and leaves were studied. We also calculated the bioaccumulation factor (BAF), and translocation factor (TF) values to quantify the metal accumulation, and translocation between plant organs. Our findings indicated that metal accumulation correlated with metal concentration; that is plant organs accumulated higher concentration of metals in the contaminated area than in the control one. We found that the concentrations of Ba, Mn, Sr and Zn were the highest in leaves, and Al, Cr, Cu, Fe and Pb in roots. High BAF value was found for Sr in all studied areas, indicating this metal's high accumulation potential of Amaranthus retorflexus. High TF values were found for Al, Ba, Cu, Fe, Mn, Sr and Zn; these metals were successfully transported to aboveground plant organs. We demonstrated that A. retroflexus, a fast-growing, rapidly spreading weed in Europe, was especially useful for heavy metal phytoremediation and phytoextraction.
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Affiliation(s)
- Bianka Sipos
- Department of Ecology, University of Debrecen, Egyetem Square 1, 4032, Debrecen, Hungary
- ELKH-DE Anthropocene Ecology Research Group, Egyetem Square 1, 4032, Debrecen, Hungary
| | - Dina Bibi
- Department of Ecology, University of Debrecen, Egyetem Square 1, 4032, Debrecen, Hungary
| | - Tibor Magura
- Department of Ecology, University of Debrecen, Egyetem Square 1, 4032, Debrecen, Hungary
- ELKH-DE Anthropocene Ecology Research Group, Egyetem Square 1, 4032, Debrecen, Hungary
| | - Béla Tóthmérész
- MTA-DE Biodiversity and Ecosystem Services Research Group, Egyetem Square 1, 4032, Debrecen, Hungary
| | - Edina Simon
- Department of Ecology, University of Debrecen, Egyetem Square 1, 4032, Debrecen, Hungary.
- ELKH-DE Anthropocene Ecology Research Group, Egyetem Square 1, 4032, Debrecen, Hungary.
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Shi L, Li J, Palansooriya KN, Chen Y, Hou D, Meers E, Tsang DCW, Wang X, Ok YS. Modeling phytoremediation of heavy metal contaminated soils through machine learning. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129904. [PMID: 36096061 DOI: 10.1016/j.jhazmat.2022.129904] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/24/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
As an important subtopic within phytoremediation, hyperaccumulators have garnered significant attention due to their ability of super-enriching heavy metals. Identifying the factors that affecting phytoextraction efficiency has important application value in guiding the efficient remediation of heavy metal contaminated soil. However, it is challenging to identify the critical factors that affect the phytoextraction of heavy metals in soil-hyperaccumulator ecosystems because the current projections on phytoremediation extrapolations are rudimentary at best using simple linear models. Here, machine learning (ML) approaches were used to predict the important factors that affecting phytoextraction efficiency of hyperaccumulators. ML analysis was based on 173 data points with consideration of soil properties, experimental conditions, plant families, low-molecular-weight organic acids from plants, plant genes, and heavy metal properties. Heavy metal properties, especially the metal ion radius, were the most important factors that affect heavy metal accumulation in shoots, and the plant family was the most important factor that affect the bioconcentration factor, metal extraction ratio, and remediation time. Furthermore, the Crassulaceae family had the highest potential as hyperaccumulators for phytoremediation, which was related to the expression of genes encoding heavy metal transporting ATPase (HMA), Metallothioneins (MTL), and natural resistance associated macrophage protein (NRAMP), and also the secretion of malate and threonine. New insights into the effects of plant characteristics, experimental conditions, soil characteristics, and heavy metal properties on phytoextraction efficiency from ML model interpretation could guide the efficient phytoremediation by identifying the best hyperaccumulators and resolving its efficient remediation mechanisms.
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Affiliation(s)
- Liang Shi
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea; College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jie Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore; CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Kumuduni Niroshika Palansooriya
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea; State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Erik Meers
- Department of Green Chemistry & Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgiu
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xiaonan Wang
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea.
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Li X, Kang X, Zou J, Yin J, Wang Y, Li A, Ma X. Allochthonous arbuscular mycorrhizal fungi promote Salix viminalis L.-mediated phytoremediation of polycyclic aromatic hydrocarbons characterized by increasing the release of organic acids and enzymes in soils. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114461. [PMID: 38321680 DOI: 10.1016/j.ecoenv.2022.114461] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 12/02/2022] [Accepted: 12/20/2022] [Indexed: 02/08/2024]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are well known persistent organic pollutants that have carcinogenic, teratogenic, and mutagenic effects on humans and animals. Arbuscular mycorrhizal fungi (AMF) that can infest plant hosts and form symbioses may help plants to enhance potential rhizosphere effects, thus contributing to the rhizodegradation of PAH-contaminated soils. The present study aimed to assess the effectiveness of AMF on enhancing Salix viminalis-mediated phytoremediation of PAH-polluted soil and clarify the plant enzymatic and organic acid mechanisms induced by AMF. Natural attenuation (NA), phytoremediation (P, Salix viminalis), S. viminalis-AMF combined remediation using willow inoculated with Funneliformis mosseae (PM), Laroideoglomus etunicatum (PE), and Rhizophagus intraradices (PI) were used as strategies for the remediation of PAH-polluted soils. The results showed that AMF inoculation contributed to the dissipation of the high-molecular-weight PAH benzo (α) pyrene that had concentrations in PM, PE, and PI treatments of 40.1 %, 24.49 %, and 36.28 % of the level in the NA treatment, and 62.32 %, 38.05 %, and 56.38 % of the level in the P treatment after 90 days. The mycorrhizal treatment also improved the removal efficiency of phenanthrene and pyrene, as their concentrations were sharply decreased after 30 days compared to the NA and P treatments. The research further clarified the changes in rhizosphere substances induced by AMF. Organic acids including arachidonic acid, octadecanedioic acid, α-linolenic acid, 10,12,14-octadecarachidonic acid and 5-methoxysalicylic acid that can act as co-metabolic substrates for certain microbial species to metabolize PAHs were significantly increased in AMF-inoculated treatments. AMF inoculation also elevated the levels of polyphenol oxidase, laccase, and dehydrogenase, that played crucial roles in PAHs biodegradation. These findings provide an effective strategy for using AMF-assisted S. viminalis to remediate PAH-polluted soils, and the results have confirmed the key roles of organic acids and soil enzymes in plant-AMF combined remediation of PAHs.
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Affiliation(s)
- Xia Li
- College of Agriculture and Bioengineering, Heze University, Heze 274000, Shandong, China
| | - Xiaofei Kang
- College of Agriculture and Bioengineering, Heze University, Heze 274000, Shandong, China
| | - Junzhu Zou
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Jiahui Yin
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; College of Horticulture, Jilin Agricultural University, Changchun 130000, Jilin, China
| | - Yuancheng Wang
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Ao Li
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Xiaodong Ma
- Institute of Grassland, Flowers and Landscape Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China.
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Inoculation with the pH Lowering Plant Growth Promoting Bacterium Bacillus sp. ZV6 Enhances Ni Phytoextraction by Salix alba from a Ni-Polluted Soil Receiving Effluents from Ni Electroplating Industry. SUSTAINABILITY 2022. [DOI: 10.3390/su14126975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Soil contamination with Ni poses serious ecological risks to the environment. Several members of the Salix genus have the ability to accumulate high concentrations of Ni in their aerial parts, and thus can be used for the remediation of Ni-contaminated soils. Interestingly, the efficacy of Ni phytoextraction by Salix may be improved by the acidification of rhizosphere with rhizosphere acidifying bacterial strains. Therefore, the aim of this study was to assess the efficacy of bacterial strain Bacillus sp. ZV6 in the presence of animal manure (AM) and leaf manure (LM) for enhancing the bioavailability of Ni in the rhizosphere of Salix alba via reducing the pH of rhizosphere and resultantly, enhanced phytoextraction of Ni. Inoculation of Ni-contaminated soil with strain ZV6 significantly increased plant growth as well as Ni uptake by alba. It was found that the addition of AM and LM resulted into a significant increase in plant growth and Ni uptake by alba in Ni-contaminated soil inoculated with ZV6 stain. However, the highest improvements in diethylene triamine penta-acetic acid (DTPA) extractable Ni (10%), Ni removal from soil (54%), Ni bioconcentration factor (26%) and Ni translocation factor (13%) were detected in the soil inoculated with ZV6 along with the addition of LM, compared to control. Similarly, the enhancements in microbial biomass (92%), bacterial count (348%), organic carbon (organic C) (57%) and various enzymatic activities such as urease (56%), dehydrogenase (32%), β-glucosidase (53%), peroxidase (26%) and acid phosphatase (38%) were also significantly higher in the soil inoculated with ZV6 along with the addition of LM. The findings of this study suggest that the inoculation of Ni-contaminated soils with rhizosphere acidifying bacteria can effectively improve Ni phytoextraction and, in parallel, enhance soil health.
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Matys Grygar T, Faměra M, Hošek M, Elznicová J, Rohovec J, Matoušková Š, Navrátil T. Uptake of Cd, Pb, U, and Zn by plants in floodplain pollution hotspots contributes to secondary contamination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:51183-51198. [PMID: 33978947 DOI: 10.1007/s11356-021-14331-5] [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: 02/01/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
Willows, woody plants of genus Salix common in floodplains of temperate regions, act as plant pumps and translocate the Cd and Zn in the soil profiles of uncontaminated and weakly contaminated floodplains from the sediment bulk to the top strata. We suggest this process occurs because the Cd and Zn concentrations in willow leaves exceed those in the sediments. Senescing foliage of plant species common in floodplains can increase the Cd and Zn ratios as compared to other elements (Pb and common 'lithogenic elements' such as Al) in the top strata of all floodplains, including those that have been severely contaminated. The top enrichment is caused by the root uptake of specific elements by growing plants, which is followed by foliage deposition. Neither the shallow groundwater nor the plant foliage shows that Cd, Zn, and Pb concentrations are related to those in the sediments, but they clearly reflect the shallow groundwater pH, with the risk element mobilised by the acidity that is typical for the subsurface sediments in floodplains. The effect that plants have on the Pb in floodplains is significantly lower than that observed for Cd and Zn, while U can be considered even less mobile than Pb. Groundwater and plant leaves can contribute to secondary contamination with Cd and Zn from floodplain pollution hotspots, meaning that plants can accumulate these elements on the floodplain surface or even return them back to the fluvial transport, even if bank erosion would not occur. For Pb and U at the sites studied, these risks were negligible.
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Affiliation(s)
- Tomáš Matys Grygar
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 01, Řež, Czech Republic.
| | - Martin Faměra
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 01, Řež, Czech Republic
| | - Michal Hošek
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 01, Řež, Czech Republic
- Faculty of Environment, J.E. Purkyně University in Ústí and Labem, Pasteurova 3632/15, ,400 96, Ústí nad Labem, Czech Republic
| | - Jitka Elznicová
- Faculty of Environment, J.E. Purkyně University in Ústí and Labem, Pasteurova 3632/15, ,400 96, Ústí nad Labem, Czech Republic
| | - Jan Rohovec
- Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, 165 00, Prague 6, Czech Republic
| | - Šárka Matoušková
- Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, 165 00, Prague 6, Czech Republic
| | - Tomáš Navrátil
- Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, 165 00, Prague 6, Czech Republic
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Influence of INGER and TORDIS Energetic Willow Clones Planted on Contaminated Soil on the Survival Rates, Yields and Calorific Value. FORESTS 2021. [DOI: 10.3390/f12070826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The paper presents some forestry aspects of using Inger and Tordis willow clones to obtain woody biomass and remedy degraded soils. The methodological aspects regarding the planting of willow seedlings, the evaluation of the survival rate, the evaluation of the biomass quantity and the enrichment of the soil are analyzed. The results of the experiments showed that the degraded soil decreased the viability rate of the cuttings by 16.6% for the Tordis clone and 35.8 for the Inger clone. The analysis of the soil samples showed that it was enriched in nutrients after 2 years of cultivation, by the decomposition of the fallen leaves on the soil and by the absorption of the substances from the soil. Regarding the amount of biomass, its mass per hectare after the first year of cultivation was 0.64 t/ha for the Inger clone and 0.66 t/ha for the Tordis clone, while the calorific values of 19,376 kJ/kg for Inger and 19,355 kJ/kg for Tordis were good values. The final conclusion of the paper highlights that Osier willow is a viable solution for obtaining energetic biomass and putting it back into the productive circuit of degraded soils.
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Sun J, Yu R, Yan Y, Hu G, Qiu Q, Jiang S, Cui J, Wang X, Ma C. Isotope tracers for lead and strontium sources in the Tieguanyin tea garden soils and tea leaves. CHEMOSPHERE 2020; 246:125638. [PMID: 31891843 DOI: 10.1016/j.chemosphere.2019.125638] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
The concentrations of Pb & Sr in Tieguanyin tea leaves and soils from 15 tea gardens of Anxi, China, were determined and the sources of Pb & Sr in soil and leaf samples were analysed using isotope tracing technology. The results showed pH in soils had significant correlations to both acid-extractable Pb & Sr in soils and new leaves. The Pb concentration in leaves was significantly lower than that in soils, especially the acid-extractable Pb in soils. The low Bio-concentration Factor (BCF) indicated the bioavailable Pb in soils could not easily be transferred to leaves. The contribution rates of parent material were 61%-100% and 45%-100% for total Pb isotope and acid-extractable Pb isotope in soils, respectively, indicating a low impact of human activity. A sizeable influence of parent material for leaves was also observed, suggesting that Pb may be present in the dust-fall. Although Sr concentrations in leaves were not high, they exceeded that in soils. The high BCF also indicated that tea has a high capacity to accumulate Sr, with the coincidence that Sr87/Sr86 in the acid-extractable isotope in soils were similar to new leaves. A Pb-Sr joint tracer indicated that Sr in old and new leaves may be influenced by parent material and anthropogenic sources, respectively.
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Affiliation(s)
- Jingwei Sun
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China; School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou, 362000, China
| | - Ruilian Yu
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Yu Yan
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China.
| | - Gongren Hu
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China.
| | - Qijun Qiu
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Songhe Jiang
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Jianyong Cui
- Analytical Laboratory of Beijing Research Institute of Uranium Geology, Beijing, 100029, China
| | - Xiaoming Wang
- Analytical Laboratory of Beijing Research Institute of Uranium Geology, Beijing, 100029, China
| | - Chao Ma
- Licheng District Information Center of Environment, Putian, 351100, China
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Tőzsér D, Tóthmérész B, Harangi S, Baranyai E, Lakatos G, Fülöp Z, Simon E. Remediation potential of early successional pioneer species Chenopodium album and Tripleurospermum inodorum. NATURE CONSERVATION 2019. [DOI: 10.3897/natureconservation.36.32503] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Remediation with plants is a technology used to decrease soil or water contamination. In this study we assessed the remediation potential of two weed species (Chenopodium album and Tripleurospermum inodorum) in a moderately metal-contaminated area. Metal concentrations were studied in roots, stems and leaves, in order to assess correlations in metal concentrations between those in soil and plants. Furthermore, we calculated bioaccumulation factor (BAF), bioconcentration factor (BCF) and translocation factor (TF) values to study the accumulation of metals from soil to plants and translocation within plants. We found correlation in metal concentrations between soil and plants. The metal accumulation potential was low in both species, indicating low BAF and BCF values. In contrast, high TF values were found for Mn, Ni, Sr, Zn, Ba, Fe, Cu and Pb in C. album, and for Fe, Mn, Ni, Zn and Sr in T. inodorum. Our results demonstrated that the potential of C. album and T. inodorum might be limited in phytoextraction processes; however, when accumulated, metals are successfully transported to aboveground plant organs. Thus, to achieve the efficient remediation of metal-contaminated soils, removal of the aboveground plant organs is recommended, by which soil disturbance can also be avoided.
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Yang QW, Ke HM, Liu SJ, Zeng Q. Phytoremediation of Mn-contaminated paddy soil by two hyperaccumulators (Phytolacca americana and Polygonum hydropiper) aided with citric acid. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:25933-25941. [PMID: 29961905 DOI: 10.1007/s11356-018-2647-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
The purpose of this study was to investigate the phytoremediation potential of two hyperaccumulator plants, Phytolacca americana L. and Polygonum hydropiper L., on manganese-contaminated paddy soils. The biomass growth, Mn concentrations in plant tissues, and potential Mn removal efficiency from soils of these two plants were studied with citric acid, and the mechanisms of citric acid on these two plants were analyzed by examining the root activity, the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in leaves, as well as the concentrations of O2·- and H2O2 in leaves. The results showed that the biomass of these two plants were both promoted under low level of citric acid (3 mmol kg-1). The concentration of Mn in the plants and the amount of Mn removed from the soil by the plants through harvesting were enhanced at low and intermediate (10 mmol kg-1) citric acid application levels. The results also showed that root activity was enhanced at the low citric acid level and significantly inhibited under the intermediate and high levels (15 mmol kg-1), which indicates the facilitative function of the low level of citric acid and the inhibitive function of the high level of citric acid application on plant biomass growth. Under the low and intermediate levels of citric acid application, O2·- in the plant leaves increased sharply, and the SOD, POD, and CAT activities also increased sharply, which made the level of H2O2 very similar to that of the control, ensuring the health of the plants. At the high level of citric acid application, however, the O2·- continued to rise sharply, while the activity of the three antioxidant enzymes declined sharply, causing the concentration of hydrogen peroxide to be much higher than that in the control, thus endangering the plants. The present study shows the potential of P. hydropiper for use in the phytoremediation of soil contaminated with a relatively low level of manganese.
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Affiliation(s)
- Qing-Wei Yang
- National Engineering-Technology Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China.
| | - Hua-Ming Ke
- National Engineering-Technology Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China
| | - Shou-Jiang Liu
- National Engineering-Technology Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China
| | - Qing Zeng
- Chongqing Zhongwang Energy Conservation and Environmental Protection Consulting Co. LTD, Chongqing, 400015, People's Republic of China
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