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Borker AR, David K, Singhal N. Analysis of time varying response on uptake patterns of Cu and Zn ions under application of ethylene diamine disuccinic acid and gibberellic acid in Lolium perenne. CHEMOSPHERE 2020; 260:127541. [PMID: 32688311 DOI: 10.1016/j.chemosphere.2020.127541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 06/09/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
The present study explores the effect of ethylene diamine disuccinic acid (EDDS) and gibberellic acid (GA) application on the phytoextraction of copper and zinc ions by Lolium perenne. When Cu was individually applied, accumulation diminished over time with little translocation from roots to shoots. In contrast, Zn accumulation and damage to roots rapidly increased over 3 days with increase in Zn translocation to shoots. Co-application of Zn to Cu amended treatments enhanced Cu concentration in shoots. For the CuEDDS application, EDDS significantly increased Cu accumulation and the damage to root increased over time, while gibberellic acid applied with Cu and Zn generally lowered metal uptake and decreased cell membrane damage. The application of EDDS and GA-EDDS, by themselves or with Cu and Zn, lowered transpiration and increased translocation, while GA increased transpiration but decreased translocation. EDDS application typically increased metal ion uptake by causing more cell damage, while GA typically lowered the damage and decreased metal uptake even though the transpiration increased over time and plant growth occurred. Furthermore, the behaviour of metal uptake changed over time and, for some treatments, the short-term and long-term response differed greatly. These results show that EDDS can be successfully used in phytoextraction of both Cu and Zn ions by Lolium perenne while GA can resist damage and protect against plant stress.
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Affiliation(s)
- Aditi R Borker
- Department of Civil and Environmental Engineering, The University of Auckland, Auckland, New Zealand.
| | - Karine David
- Department of Biological Sciences, The University of Auckland, Auckland, New Zealand.
| | - Naresh Singhal
- Department of Civil and Environmental Engineering, The University of Auckland, Auckland, New Zealand.
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2
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Wang Y, Meng D, Fei L, Dong Q, Wang Z. A novel phytoextraction strategy based on harvesting the dead leaves: Cadmium distribution and chelator regulations among leaves of tall fescue. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:3041-3047. [PMID: 30373080 DOI: 10.1016/j.scitotenv.2018.10.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/02/2018] [Accepted: 10/06/2018] [Indexed: 06/08/2023]
Abstract
The treatment of large amount of hazardous plant residues from phytoextraction is costly and has been a burden for the society. This experiment was designed to evaluate the possibility of cadmium (Cd) phytoextraction by harvesting the dead leaves instead of the whole plant in tall fescue (Festuca arundinacea). Results showed that Cd was preferentially distributed in the senescent and dead leaves. EDTA, DTPA and EGTA enhanced Cd accumulations in the dead leaves which could be associated to the increase of the water-soluble inorganic Cd and Cd-organic acid complexes in shoots. The dead leaves were only 12.6-16.3% of the total shoot biomass but accumulated 73.4-87.2% of the total shoot Cd. The results indicate that a novel strategy of Cd phytoextraction based on harvesting the dead leaves is feasible to save the high treatment cost of hazardous plant residues while maintaining the acceptable phytoextraction efficiency.
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Affiliation(s)
- Yun Wang
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, PR China; Department of Landscape Architecture, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Depeng Meng
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Ling Fei
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Qin Dong
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Zhaolong Wang
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, PR China.
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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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Johnson A, Singhal N. Increased Uptake of Chelated Copper Ions by Lolium perenne Attributed to Amplified Membrane and Endodermal Damage. Int J Mol Sci 2015; 16:25264-84. [PMID: 26512647 PMCID: PMC4632801 DOI: 10.3390/ijms161025264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 10/01/2015] [Accepted: 10/15/2015] [Indexed: 11/16/2022] Open
Abstract
The contributions of mechanisms by which chelators influence metal translocation to plant shoot tissues are analyzed using a combination of numerical modelling and physical experiments. The model distinguishes between apoplastic and symplastic pathways of water and solute movement. It also includes the barrier effects of the endodermis and plasma membrane. Simulations are used to assess transport pathways for free and chelated metals, identifying mechanisms involved in chelate-enhanced phytoextraction. Hypothesized transport mechanisms and parameters specific to amendment treatments are estimated, with simulated results compared to experimental data. Parameter values for each amendment treatment are estimated based on literature and experimental values, and used for model calibration and simulation of amendment influences on solute transport pathways and mechanisms. Modeling indicates that chelation alters the pathways for Cu transport. For free ions, Cu transport to leaf tissue can be described using purely apoplastic or transcellular pathways. For strong chelators (ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA)), transport by the purely apoplastic pathway is insufficient to represent measured Cu transport to leaf tissue. Consistent with experimental observations, increased membrane permeability is required for simulating translocation in EDTA and DTPA treatments. Increasing the membrane permeability is key to enhancing phytoextraction efficiency.
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Affiliation(s)
- Anthea Johnson
- Department of Civil and Environmental Engineering, University of Auckland, Auckland 1142, New Zealand.
| | - Naresh Singhal
- Department of Civil and Environmental Engineering, University of Auckland, Auckland 1142, New Zealand.
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Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin. Sci Rep 2015; 5:9944. [PMID: 25962970 PMCID: PMC4649996 DOI: 10.1038/srep09944] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/10/2015] [Indexed: 12/31/2022] Open
Abstract
Cu removal by a novel multi-amines decorated resin (PAMD) from wastewater in the absence or presence of citric acid (CA) was examined. Adsorption capacity of Cu onto PAMD markedly increased by 186% to 5.07 mmol/g in the presence of CA, up to 7 times of that onto four commercial resins under the same conditions. Preloaded and kinetic studies demonstrated adsorption of [Cu-CA] complex instead of CA site-bridging and variations of adsorbate species were qualitatively illustrated. The interaction configuration was further studied with ESI-MS, FTIR, XPS and XANES characterizations. The large enhancement of Cu adsorption in Cu-CA bi-solutes systems was attributed to mechanism change from single-site to dual-sites interaction in which cationic or neutral Cu species (Cu2+ and CuHL0) coordinated with neutral amine sites and anionic complex species (CuL− and Cu2L22−) directly interacted with protonated amine sites via electrostatic attraction, and the ratio of the two interactions was approximately 0.5 for the equimolar bi-solutes system. Moreover, commonly coexisting ions in wastewaters had no obvious effect on the superior performance of PAMD. Also, Cu and CA could be recovered completely with HCl. Therefore, PAMD has a great potential to efficiently remove heavy metal ions from wastewaters in the presence of organic acids.
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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: 176] [Impact Index Per Article: 19.6] [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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Pradhan S, Patra P, Mitra S, Dey KK, Basu S, Chandra S, Palit P, Goswami A. Copper nanoparticle (CuNP) nanochain arrays with a reduced toxicity response: a biophysical and biochemical outlook on Vigna radiata. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:2606-2617. [PMID: 25686266 DOI: 10.1021/jf504614w] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Copper deficiency or toxicity in agricultural soil circumscribes a plant's growth and physiology, hampering photochemical and biochemical networks within the system. So far, copper sulfate (CS) has been used widely despite its toxic effect. To get around this long-standing problem, copper nanoparticles (CuNPs) have been synthesized, characterized, and tested on mung bean plants along with commercially available salt CS, to observe morphological abnormalities enforced if any. CuNPs enhanced photosynthetic activity by modulating fluorescence emission, photophosphorylation, electron transport chain (ETC), and carbon assimilatory pathway under controlled laboratory conditions, as revealed from biochemical and biophysical studies on treated isolated mung bean chloroplast. CuNPs at the recommended dose worked better than CS in plants in terms of basic morphology, pigment contents, and antioxidative activities. CuNPs showed elevated nitrogen assimilation compared to CS. At higher doses CS was found to be toxic to the plant system, whereas CuNP did not impart any toxicity to the system including morphological and/or physiological alterations. This newly synthesized polymer-encapsulated CuNPs can be utilized as nutritional amendment to balance the nutritional disparity enforced by copper imbalance.
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Affiliation(s)
- Saheli Pradhan
- †Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Prasun Patra
- §Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, Kolkata 700098, India
| | - Shouvik Mitra
- †Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Kushal Kumar Dey
- #Department of Statistics, University of Chicago, Chicago, Illinois 60637, United States
| | - Satakshi Basu
- †Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Sourov Chandra
- †Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Pratip Palit
- ⊥Plant Physiology Section, Central Research Institute for Jute and Allied Fibers, Indian Council of Agricultural Research, Barrackpore, Kolkata 700120, India
| | - Arunava Goswami
- †Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
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Jefferson WA, Hu C, Liu H, Qu J. Reaction of aqueous Cu-Citrate with MnO2 birnessite: characterization of Mn dissolution, oxidation products and surface interactions. CHEMOSPHERE 2015; 119:1-7. [PMID: 25460741 DOI: 10.1016/j.chemosphere.2014.04.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 04/08/2014] [Accepted: 04/17/2014] [Indexed: 06/04/2023]
Abstract
Citric acid, a widespread soil rhizosphere plant/microbe carboxylic acid exudate can easily form chelates with heavy metals, increasing their availability in the environment. When Cu(II) from algal control in water bodies or reservoirs and fungicides, such as the Bordeaux mixture, and citrate interact, solubilization through chelation is a possible outcome. Manganese (hydr)oxides represent a significant portion of the subsurface environment and can affect the fate and transport of chemical species through adsorption and oxidation. This study explores the possible interaction between MnO2 and Cu-Citrate under ambient oxic conditions. The calculated Mn(II) dissolution rates during the initial 1h of reaction followed the series Cu(II)>Cu-Citrate 1:0.5>Cu-Citrate 1:1(oxic)>Citrate>Cu-Citrate 1:1(Anoxic), reinforcing the central role of (complexed or un-complexed) Cu(II) during the initial surface-coordination instead of following the s-shaped auto-catalytic curves of Mn(II) dissolution in citrate solution. The use of capillary electrophoresis allowed the detection of an intermediate Cu(II)Acetonedicarboxylate complex and the oxidation products acetonedicarboxylate, acetoacetate, acetone and acetic acid. The mass balance analysis of Cu-Citrate 1:1 suggests the partial adsorption of Cu-Citrate(ads) and catalytic degradation of acetonedicarboxylate through a MnO2-Cu surface sorbed complex. Lastly, XPS analysis confirmed the MnO2 surface Cu(II) reduction along with an outer-hydration layer at the MnO2 interface, where electron transfer and aquo ligand exchange may lead to the oxidation of Cu-Citrate.
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Affiliation(s)
- William A Jefferson
- Key Laboratory of Aquatic Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chengzhi Hu
- Key Laboratory of Aquatic Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Huijuan Liu
- Key Laboratory of Aquatic Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jiuhui Qu
- Key Laboratory of Aquatic Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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