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Kuvelja A, Morina F, Mijovilovich A, Bokhari SNH, Konik P, Koloniuk I, Küpper H. Zinc priming enhances Capsicum annuum immunity against infection by Botrytis cinerea- From the whole plant to the molecular level. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 343:112060. [PMID: 38460554 DOI: 10.1016/j.plantsci.2024.112060] [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: 11/01/2023] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
Micronutrient manipulation can enhance crop resilience against pathogens, but the mechanisms are mostly unknown. We tested whether priming Capsicum annuum plants with zinc (5 μM Zn) or manganese (3 μM Mn) for six weeks increases their immunity against the generalist necrotroph Botrytis cinerea compared to deficient (0.1 μM Zn, 0.02 μM Mn) and control conditions (1 μM Zn, 0.6 μM Mn). Zinc priming reduced the pathogen biomass and lesion area and preserved CO2 assimilation and stomatal conductance. Zinc mobilization at the infection site, visualized by micro-X-ray fluorescence, was accompanied by increased Zn protein binding obtained by size exclusion HPLC-ICP/MS. A common metabolic response to fungal infection in Zn- and Mn-primed plants was an accumulation of corchorifatty acid F, a signaling compound, and the antifungal compound acetophenone. In vitro tests showed that the binding of Zn2+ increased, while Mn2+ binding decreased acetophenone toxicity against B. cinerea at concentrations far below the toxicity thresholds of both metals in unbound (aquo complex) form. The metal-specific response to fungal infection included the accumulation of phenolics and amino acids (Mn), and the ligand isocitrate (Zn). The results highlight the importance of Zn for pepper immunity through direct involvement in immunity-related proteins and low molecular weight Zn-complexes, while Mn priming was inefficient.
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Affiliation(s)
- Anđela Kuvelja
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, České Budějovice 370 05, Czech Republic; University of South Bohemia, Faculty of Science, Branišovská 31/1160, České Budějovice 370 05, Czech Republic
| | - Filis Morina
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, České Budějovice 370 05, Czech Republic.
| | - Ana Mijovilovich
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, České Budějovice 370 05, Czech Republic
| | - Syed Nadeem Hussain Bokhari
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, České Budějovice 370 05, Czech Republic
| | - Peter Konik
- University of South Bohemia, Faculty of Science, Branišovská 31/1160, České Budějovice 370 05, Czech Republic
| | - Igor Koloniuk
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Virology, Branišovská 31/1160, České Budějovice 370 05, Czech Republic
| | - Hendrik Küpper
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, České Budějovice 370 05, Czech Republic; University of South Bohemia, Faculty of Science, Branišovská 31/1160, České Budějovice 370 05, Czech Republic.
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Chen M, Jiang P, Zhang X, Sunahara GI, Liu J, Yu G. Physiological and biochemical responses of Leersia hexandra Swartz to nickel stress: Insights into antioxidant defense mechanisms and metal detoxification strategies. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133578. [PMID: 38306837 DOI: 10.1016/j.jhazmat.2024.133578] [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: 08/31/2023] [Revised: 01/12/2024] [Accepted: 01/18/2024] [Indexed: 02/04/2024]
Abstract
Phytoremediation is widely considered as a cost-effective method for managing heavy metal soil pollution. Leersia hexandra Swartz shows a promising potential for the remediation of heavy metals pollution, including chromium (Cr), copper (Cu), and nickel (Ni). It is vital to understand the physiological and biochemical responses of L. hexandra to Ni stress to elucidate the mechanisms underlying Ni tolerance and accumulation. Here, we examined the metabolic and transcriptomic responses of L. hexandra exposed to 40 mg/L Ni for 24 h and 14 d. After 24-h Ni stress, gene expression of glutathione metabolic cycle (GSTF1, GSTU1 and MDAR4) and superoxide dismutase (SODCC2) was significantly increased in plant leaves. Furthermore, after 14-d Ni stress, the ascorbate peroxidase (APX7), superoxide dismutase (SODCP and SOD1), and catalase (CAT) gene expression was significantly upregulated, but that of glutathione metabolic cycle (EMB2360, GSTU1, GSTU6, GSH2, GPX6, and MDAR2) was downregulated. After 24-h Ni stress, the differentially expressed metabolites (DEMs) were mainly flavonoids (45%) and flavones (20%). However, after 14-d Ni stress, the DEMs were mainly carbohydrates and their derivatives (34%), amino acids and derivatives (15%), and organic acids and derivatives (8%). Results suggest that L. hexandra adopt distinct time-dependent antioxidant and metal detoxification strategies likely associated with intracellular reduction-oxidation balance. Novel insights into the molecular mechanisms responsible for Ni tolerance in plants are presented.
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Affiliation(s)
- Mouyixing Chen
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Pingping Jiang
- College of Earth Sciences, Guilin University of Technology, Guilin 541004, China; Guangxi Key Laboratory of Exploration for Hidden Metallic Ore Deposits, Guilin 541004, China.
| | - Xuehong Zhang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China.
| | - Geoffrey I Sunahara
- Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada
| | - Jie Liu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Guo Yu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
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Zhang H, Hu L, Du X, Shah AA, Ahmad B, Yang L, Mu Z. Response and Tolerance of Macleaya cordata to Excess Zinc Based on Transcriptome and Proteome Patterns. PLANTS (BASEL, SWITZERLAND) 2023; 12:2275. [PMID: 37375899 DOI: 10.3390/plants12122275] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 06/01/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
Macleaya cordata is a dominant plant of mine tailings and a zinc (Zn) accumulator with high Zn tolerance. In this study, M. cordata seedlings cultured in Hoagland solution were treated with 200 μmol·L-1 of Zn for 1 day or 7 days, and then, their leaves were taken for a comparative analysis of the transcriptomes and proteomes between the leaves of the control and Zn treatments. Differentially expressed genes included those that were iron (Fe)-deficiency-induced, such as vacuolar iron transporter VIT, ABC transporter ABCI17 and ferric reduction oxidase FRO. Those genes were significantly upregulated by Zn and could be responsible for Zn transport in the leaves of M. cordata. Differentially expressed proteins, such as chlorophyll a/b-binding proteins, ATP-dependent protease, and vacuolar-type ATPase located on the tonoplast, were significantly upregulated by Zn and, thus, could be important in chlorophyll biosynthesis and cytoplasm pH stabilization. Moreover, the changes in Zn accumulation, the production of hydrogen peroxide, and the numbers of mesophyll cells in the leaves of M. cordata were consistent with the expression of the genes and proteins. Thus, the proteins involved in the homeostasis of Zn and Fe are hypothesized to be the keys to the tolerance and accumulation of Zn in M. cordata. Such mechanisms in M. cordata can suggest novel approaches to genetically engineering and biofortifying crops.
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Affiliation(s)
- Hongxiao Zhang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Linfeng Hu
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xinlong Du
- College of Agriculture, Henan University of Science and Technology, Luoyang 471000, China
| | - Assar Ali Shah
- College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Baseer Ahmad
- College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Liming Yang
- College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
| | - Zhiying Mu
- College of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
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Ghuge SA, Nikalje GC, Kadam US, Suprasanna P, Hong JC. Comprehensive mechanisms of heavy metal toxicity in plants, detoxification, and remediation. JOURNAL OF HAZARDOUS MATERIALS 2023; 450:131039. [PMID: 36867909 DOI: 10.1016/j.jhazmat.2023.131039] [Citation(s) in RCA: 44] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/07/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Natural and anthropogenic causes are continually growing sources of metals in the ecosystem; hence, heavy metal (HM) accumulation has become a primary environmental concern. HM contamination poses a serious threat to plants. A major focus of global research has been to develop cost-effective and proficient phytoremediation technologies to rehabilitate HM-contaminated soil. In this regard, there is a need for insights into the mechanisms associated with the accumulation and tolerance of HMs in plants. It has been recently suggested that plant root architecture has a critical role in the processes that determine sensitivity or tolerance to HMs stress. Several plant species, including those from aquatic habitats, are considered good hyperaccumulators for HM cleanup. Several transporters, such as the ABC transporter family, NRAMP, HMA, and metal tolerance proteins, are involved in the metal acquisition mechanisms. Omics tools have shown that HM stress regulates several genes, stress metabolites or small molecules, microRNAs, and phytohormones to promote tolerance to HM stress and for efficient regulation of metabolic pathways for survival. This review presents a mechanistic view of HM uptake, translocation, and detoxification. Sustainable plant-based solutions may provide essential and economical means of mitigating HM toxicity.
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Affiliation(s)
- Sandip A Ghuge
- Agricultural Research Organization (ARO), The Volcani Institute, P.O. Box 15159, 7505101 Rishon LeZion, Israel
| | - Ganesh Chandrakant Nikalje
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Gyeongnam 52828, South Korea; Department of Botany, Seva Sadan's R. K. Talreja College of Arts, Science and Commerce, Affiliated to University of Mumbai, Ulhasnagar 421003, India
| | - Ulhas Sopanrao Kadam
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Gyeongnam 52828, South Korea.
| | - Penna Suprasanna
- Amity Centre for Nuclear Biotechnology, Amity Institute of Biotechnology, Amity University Maharashtra, Mumbai 410206, India
| | - Jong Chan Hong
- Division of Life Science and Division of Applied Life Science (BK21 Four), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Gyeongnam 52828, South Korea; Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA.
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Sferra G, Fantozzi D, Scippa GS, Trupiano D. Key Pathways and Genes of Arabidopsis thaliana and Arabidopsis halleri Roots under Cadmium Stress Responses: Differences and Similarities. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091793. [PMID: 37176850 PMCID: PMC10180823 DOI: 10.3390/plants12091793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023]
Abstract
Cadmium (Cd) is among the world's major health concerns, as it renders soils unsuitable and unsafe for food and feed production. Phytoremediation has the potential to remediate Cd-polluted soils, but efforts are still needed to develop a deep understanding of the processes underlying it. In this study, we performed a comprehensive analysis of the root response to Cd stress in A. thaliana, which can phytostabilize Cd, and in A. halleri, which is a Cd hyperaccumulator. Suitable RNA-seq data were analyzed by WGCNA to identify modules of co-expressed genes specifically associated with Cd presence. The results evidenced that the genes of the hyperaccumulator A. halleri mostly associated with the Cd presence are finely regulated (up- and downregulated) and related to a general response to chemical and other stimuli. Additionally, in the case of A. thaliana, which can phytostabilize metals, the genes upregulated during Cd stress are related to a general response to chemical and other stimuli, while downregulated genes are associated with functions which, affecting root growth and development, determine a deep modification of the organ both at the cellular and physiological levels. Furthermore, key genes of the Cd-associated modules were identified and confirmed by differentially expressed gene (DEG) detection and external knowledge. Together, key functions and genes shed light on differences and similarities among the strategies that the plants use to cope with Cd and may be considered as possible targets for future research.
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Affiliation(s)
- Gabriella Sferra
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy
| | - Daniele Fantozzi
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy
| | | | - Dalila Trupiano
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy
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Medas D, Meneghini C, Pusceddu C, Carlomagno I, Aquilanti G, Dore E, Murgia V, Podda F, Rimondi V, Vacca S, Wanty RB, De Giudici G. Plant-minerals-water interactions: An investigation on Juncus acutus exposed to different Zn sources. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 870:161931. [PMID: 36736402 DOI: 10.1016/j.scitotenv.2023.161931] [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: 10/17/2022] [Revised: 01/27/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
Juncus acutus has been proposed as a suitable species for the design of phytoremediation plans. This research aimed to investigate the role played by rhizosphere minerals and water composition on Zn transformations and dynamics in the rhizosphere-plant system of J. acutus exposed to different Zn sources. Rhizobox experiments were conducted using three different growing substrates (Zn from 137 to 20,400 mg/kg), and two irrigation lines (Zn 0.05 and 180 mg/l). The plant growth was affected by the substrate type, whereas the Zn content in the water did not significantly influence the plant height for a specific substrate. J. acutus accumulated Zn mainly in roots (up to 10,000 mg/kg dw); the metal supply by the water led to variable increases in the total Zn concentration in the vegetal organs, and different Zn distributions both controlled by the rhizosphere mineral composition. Different Zn complexation mechanisms were observed, mainly driven by cysteine and citrate compounds, whose amount increased linearly with Zn content in water, but differently for each of the investigated systems. Our study contributes to gain a more complete picture of the Zn pathway in the rhizosphere-plant system of J. acutus. We demonstrated that this vegetal species is not only capable of developing site-specific tolerance mechanisms, but it is also capable to differently modulate Zn transformation when Zn is additionally supplied by watering. These findings are necessary for predicting the fate of Zn during phytoremediation of sites characterized by specific mineralogical properties and subject to water chemical variations.
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Affiliation(s)
- Daniela Medas
- Department of Chemical and Geological Science, University of Cagliari, Cagliari, Italy.
| | - Carlo Meneghini
- Department of Sciences, University of Roma Tre, Rome, Italy.
| | - Claudia Pusceddu
- Department of Chemical and Geological Science, University of Cagliari, Cagliari, Italy
| | | | | | - Elisabetta Dore
- Department of Chemical and Geological Science, University of Cagliari, Cagliari, Italy.
| | | | - Francesca Podda
- Department of Chemical and Geological Science, University of Cagliari, Cagliari, Italy.
| | - Valentina Rimondi
- Department of Earth Sciences, University of Florence, Florence, Italy; CNR-Institute of Geosciences and Earth Resources, Florence, Italy.
| | - Salvatore Vacca
- Department of Chemical and Geological Science, University of Cagliari, Cagliari, Italy.
| | - Richard B Wanty
- Colorado School of Mines, Department of Geology and Geological Engineering, Golden, CO 80401, USA.
| | - Giovanni De Giudici
- Department of Chemical and Geological Science, University of Cagliari, Cagliari, Italy.
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Seregin IV, Ivanova TV, Voronkov AS, Kozhevnikova AD, Schat H. Zinc- and nickel-induced changes in fatty acid profiles in the zinc hyperaccumulator Arabidopsis halleri and non-accumulator Arabidopsis lyrata. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 197:107640. [PMID: 36958152 DOI: 10.1016/j.plaphy.2023.107640] [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: 10/18/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
This pilot study aimed at comparing zinc (Zn) and nickel (Ni) effects on the fatty acid (FA) profiles, oxidative stress and desaturase activity in the Zn hyperaccumulator Arabidopsis halleri and the excluder Arabidopsis lyrata to allow a better picture of the physiological mechanisms which may contribute to metal tolerance or acclimation. The most significant changes in the FA composition were observed in the shoots of the hyperaccumulator and in the roots of the excluder, and were not only metal-dependent, but also species-specific, since the most significant changes in the shoots of A. halleri were observed under Ni treatment, though Ni, in contrast to Zn, was accumulated mainly in its roots. Several FAs appeared in the roots and shoots of A. lyrata only upon metal exposure, whereas they were already found in control A. halleri. In both species, there was an increase in oleic acid under Ni treatment in both organs, whereas in Zn-treated plants the increase was shown only for the shoots. A rare conjugated α-parinaric acid was identified only in the shoots of metal-treated A. halleri. In the shoots of the hyperaccumulator, there was an increase in the content of saturated FAs and a decrease in the content of unsaturated FAs, while in the roots of the excluder, the opposite pattern was observed. These metal-induced changes in FA composition in the shoots of A. halleri can lead to a decrease in the fluidity of membranes, which could diminish the penetration of ROS into the membrane and thus maintain its stability.
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Affiliation(s)
- Ilya V Seregin
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia.
| | - Tatiana V Ivanova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia
| | - Alexander S Voronkov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia
| | - Anna D Kozhevnikova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia
| | - Henk Schat
- Laboratory of Genetics, Wageningen University and Research, Droevendaalsesteeg 1, 6708, PB Wageningen, the Netherlands; Department of Ecological Science, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands
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Deans I, Stewart DI, Jones J, Kam J, Mishra B. Uptake and speciation of Zn and Pb by Miscanthus grown in contaminated soils. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:129899. [PMID: 36493643 DOI: 10.1016/j.jhazmat.2022.129899] [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: 02/01/2022] [Revised: 08/22/2022] [Accepted: 08/31/2022] [Indexed: 06/17/2023]
Abstract
The uptake by and distribution of Zn and Pb within a novel seed-based Miscanthus hybrid grown in contaminated soil was assessed. Results from juvenile plants in a pot-trial was compared with data for mature biomass of the same species harvested during a field-trial. Both Zn and Pb uptake by juvenile plants were observed to increase in proportion to the soil concentrations. Both Zn and Pb accumulation differed between leaf and stem structures, and both were different in the mature biomass compared with juvenile plants. Analysis of X-Ray Absorption Fine Structures (XAFS) revealed different Zn speciation in stems and leaves, and differences in Zn speciation with plant maturity. Sulfur ligands consistent with the presence of cysteine rich metallothioneins (MT) and phytochelatin (PC) complexes were the dominant Zn species in juvenile plant leaves, together with octahedral O/N species typified by Zn-malate. Sulfur ligands were also prevalent in stems from juvenile plants, but predominant O/N speciation shifted towards tetrahedral coordination. In contrast, tetrahedral Zn coordination with O/N species predominated in the mature biomass crop. The XAFS spectra for the mature biomass were consistent with Zn being retained within cell walls as pectin and/or phosphate complexes.
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Affiliation(s)
- Innes Deans
- School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom
| | - Douglas I Stewart
- School of Civil Engineering, University of Leeds, Leeds, United Kingdom
| | - Jenny Jones
- School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom
| | - Jason Kam
- Terravesta Ltd, Lincoln, United Kingdom
| | - Bhoopesh Mishra
- School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom; Physics Department, Illinois Institute of Technology, Chicago, United States.
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Zhang H, Sun X, Hwarari D, Du X, Wang Y, Xu H, Lv S, Wang T, Yang L, Hou D. Oxidative Stress Response and Metal Transport in Roots of Macleaya cordata Exposed to Lead and Zinc. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12030516. [PMID: 36771604 PMCID: PMC9920459 DOI: 10.3390/plants12030516] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 05/31/2023]
Abstract
Heavy metal pollution possesses potential hazards to plant, animal and human health, which has become the focus of recent attention. Hence, phytoremediation has been regarded as one of the most important remediation technologies for heavy-metal-contaminated soils. In this research, a dominant mine tailing plant, Macleaya cordata, was used as the experimental material to compare the metal transport and oxidative stress response in its roots under lead (Pb) and zinc (Zn) treatments. The result showed that Pb was mainly accumulated in the roots of M. cordata under the Pb treatment; less than 1% Pb was transported to the parts above. An analysis of the Zn content demonstrated a 39% accumulation in the shoots. The production of reactive oxygen species was detected using the in situ histological staining of roots, which showed that hydrogen peroxide in the root tips was observed to increase with the increase in both Pb and Zn concentrations. No significant superoxide anion changes were noted in the root tips under the Pb treatment. An analysis of the root enzyme activity showed that increase in NADPH oxidase activity can be responsible for the production of superoxide anions, subsequent the inhibition of root growth and decrease in antioxidant enzyme activities in the roots of M. cordata exposed to excess Zn. In total, this research provides evidence that the root of M. cordata has a high antioxidant capacity for Pb stress, so it can accumulate more Pb without oxidative damage. On the other hand, the Zn accumulated in the roots of M. cordata causes oxidative damage to the root tips, which can stimulate more Zn transport to the shoots to reduce the damage to the roots. This result will provide a basis for the application of M. cordata in the phytoremediation of soil polluted by Pb-Zn compounds.
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Affiliation(s)
- Hongxiao Zhang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Xijing Sun
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Delight Hwarari
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Xinlong Du
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Yinghao Wang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Huawei Xu
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Shufang Lv
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Ting Wang
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
| | - Liming Yang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Dianyun Hou
- College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China
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Noman EA, Al-Gheethi A, Al-Sahari M, Saphira Radin Mohamed RM, Crane R, Aziz NAA, Govarthanan M. Challenges and opportunities in the application of bioinspired engineered nanomaterials for the recovery of metal ions from mining industry wastewater. CHEMOSPHERE 2022; 308:136165. [PMID: 36037954 DOI: 10.1016/j.chemosphere.2022.136165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/05/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Heavy-metal-bearing wastewater is among the most formidable challenges the mining industry currently faces in maintaining its social license to operate. Amongst the technologies available for metal ion adsorption, bioinspired engineering nanomaterials have emerged as one which exhibits great promise. However, current processes used for the preparation of adsorbents (including nanoscale activated carbon and biochar) represent a source of adverse impacts on the environment. In contrast, the application of biogenic-nanoparticles, i.e., those derived from processes catalysed by microbiota, has received significant attention in the last few years. Coupled with this, the use of naturally occurring reagents is of major importance for the sustainability of this emerging industry. This paper analyses the life cycle assessment (LCA) of the synthesis of adsorbents derived from agricultural wastes. Moreover, rather than simply recovering the ecotoxic metals from wastewater, the potential to valorise dissolved metals into high-value metallic nanoparticle products is discussed. LCA analysis revealed that the adsorbent had some adverse impact on the environment. The agricultural wastes contributed 27.86% to global warming, 54.64% to ozone formation, 33.06% to fine particles, and 98.24% to marine eutrophication. Mining wastewater is an important, and largely currently unexploited, source of metal value. However, the often-low concentration of such metals dictates that their conversion into high-value products (such as engineered nanoparticles) is an important new research frontier. Within this the use of biosynthesis methods has emerged as having great potential due to a range of beneficial attributes, including low cost, high efficacy and/or environmental compatibility.
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Affiliation(s)
- Efaq Ali Noman
- Department of Civil Engineering, Faculty of Civil Engineering and Build Environment, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia; Micropollutant Research Centre (MPRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia
| | - Adel Al-Gheethi
- Department of Civil Engineering, Faculty of Civil Engineering and Build Environment, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia; Micropollutant Research Centre (MPRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia; Camborne School of Mines, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Penryn, Cornwall, TR10 9FE, UK.
| | - Mohammed Al-Sahari
- Micropollutant Research Centre (MPRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia
| | - Radin Maya Saphira Radin Mohamed
- Department of Civil Engineering, Faculty of Civil Engineering and Build Environment, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia; Micropollutant Research Centre (MPRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia.
| | - Rich Crane
- Camborne School of Mines, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Penryn, Cornwall, TR10 9FE, UK
| | - Nur Adila Ab Aziz
- Department of Civil Engineering, Faculty of Civil Engineering and Build Environment, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia; Micropollutant Research Centre (MPRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India
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11
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Amaral DC, Brown PH. Foliar Application of an Inositol-Based Plant Biostimulant Boosts Zinc Accumulation in Wheat Grains: A μ-X-Ray Fluorescence Case Study. FRONTIERS IN PLANT SCIENCE 2022; 13:837695. [PMID: 35463431 PMCID: PMC9020830 DOI: 10.3389/fpls.2022.837695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/31/2022] [Indexed: 05/25/2023]
Abstract
There has been much interest in the incorporation of organic molecules or biostimulants into foliar fertilizers with the rationalization that these compounds will enhance the uptake, or subsequent mobility of the applied nutrient. The objective of this research was to investigate the effects of an inositol-based plant stimulant on the mobility and accumulation of foliar-applied zinc (Zn) in wheat plants (Triticum aestivum L.). High-resolution elemental imaging with micro-X-ray fluorescence (μ-XRF) was utilized to examine Zn distribution within the vascular bundle of the leaf and whole grains. The inclusion of myo-inositol with Zinc sulfate, significantly increased Zn concentration in shoots in contrast to untreated controls and Zn sulfate applied alone. Foliar Zn treated plants increased Zn in grains by 5-25% with myo-inositol plus Zn treated plants significantly increasing grain Zn concentration compared to both Zn treated and non-treated controls. XRF imaging revealed Zn enrichment in the bran layer and germ, with a very low Zn concentration present in the endosperm. Plants treated with Zn plus myo-inositol showed an enhanced and uniform distribution of Zn throughout the bran layer and germ with an increased concentration in the endosperm. While our data suggest that foliar application of myo-inositol in combination with Zn may be a promising strategy to increase the absorption and mobility of Zn in the plant tissue and subsequently to enhance Zn accumulation in grains, further research is needed to clarify the mechanisms by which myo-inositol affects plant metabolism and nutrient mobility.
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Affiliation(s)
- Douglas C. Amaral
- Division of Agriculture and Natural Resources, University of California, Davis, Davis, CA, United States
| | - Patrick H. Brown
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
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12
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Seregin IV, Kozhevnikova AD. Low-molecular-weight ligands in plants: role in metal homeostasis and hyperaccumulation. PHOTOSYNTHESIS RESEARCH 2021; 150:51-96. [PMID: 32653983 DOI: 10.1007/s11120-020-00768-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Mineral nutrition is one of the key factors determining plant productivity. In plants, metal homeostasis is achieved through the functioning of a complex system governing metal uptake, translocation, distribution, and sequestration, leading to the maintenance of a regulated delivery of micronutrients to metal-requiring processes as well as detoxification of excess or non-essential metals. Low-molecular-weight ligands, such as nicotianamine, histidine, phytochelatins, phytosiderophores, and organic acids, play an important role in metal transport and detoxification in plants. Nicotianamine and histidine are also involved in metal hyperaccumulation, which determines the ability of some plant species to accumulate a large amount of metals in their shoots. In this review we extensively summarize and discuss the current knowledge of the main pathways for the biosynthesis of these ligands, their involvement in metal uptake, radial and long-distance transport, as well as metal influx, isolation and sequestration in plant tissues and cell compartments. It is analyzed how diverse endogenous ligand levels in plants can determine their different tolerance to metal toxic effects. This review focuses on recent advances in understanding the physiological role of these compounds in metal homeostasis, which is an essential task of modern ionomics and plant physiology. It is of key importance in studying the influence of metal deficiency or excess on various physiological processes, which is a prerequisite to the improvement of micronutrient uptake efficiency and crop productivity and to the development of a variety of applications in phytoremediation, phytomining, biofortification, and nutritional crop safety.
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Affiliation(s)
- I V Seregin
- K.A. Timiryazev Institute of Plant Physiology RAS, IPPRAS, Botanicheskaya st., 35, Moscow, Russian Federation, 127276.
| | - A D Kozhevnikova
- K.A. Timiryazev Institute of Plant Physiology RAS, IPPRAS, Botanicheskaya st., 35, Moscow, Russian Federation, 127276
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13
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Doyama K, Yamaji K, Haruma T, Ishida A, Mori S, Kurosawa Y. Zn tolerance in the evergreen shrub, Aucuba japonica, naturally growing at a mine site: Cell wall immobilization, aucubin production, and Zn adsorption on fungal mycelia. PLoS One 2021; 16:e0257690. [PMID: 34591865 PMCID: PMC8483361 DOI: 10.1371/journal.pone.0257690] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/07/2021] [Indexed: 01/21/2023] Open
Abstract
Aucuba japonica Thunb. is an evergreen understory shrub that grows naturally at a mine site. The mine soil contains high concentrations of heavy metals, and A. japonica appears to maintain detoxification mechanisms against heavy metals in the study site’s understory. This study aimed to investigate the heavy metal tolerance mechanisms in A. japonica, considering the possible roles of arbuscular mycorrhizal and root-endophytic fungi. We conducted fieldwork in summer (canopy-foliation season) and winter (canopy-defoliation season) to measure the heavy metal concentrations in leaves, branches, and roots and analyze possible detoxicants in the roots. The infection rates of arbuscular mycorrhizal and root-endophytic fungi were evaluated via microscopic observation, and heavy metal (Zn) localization in A. japonica roots was observed using confocal laser scanning microscopy. Field analysis showed that A. japonica accumulated excessive Zn and produced aucubin and citric acid in the roots in both summer and winter. Zn localization observations clarified that Zn was distributed in thickened epidermal and cortical cell walls, suggesting that the cell walls functioned as Zn deposition sites, reducing Zn toxicity. It was further clarified that Zn was contained within cortical cells, indicating that Zn might be detoxified by aucubin and citric acid. Arbuscular mycorrhizal and root-endophytic fungi within cortical cells adsorbed Zn on fungal cell walls, indicating that these fungi would reduce Zn content within root cells and might alleviate Zn toxicity. Our results indicated that A. japonica would maintain Zn tolerance in both summer and winter via Zn immobilization in the cell walls and production of aucubin and citric acid, and that arbuscular mycorrhizal and root-endophytic fungi might play important roles in the Zn tolerance of A. japonica.
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Affiliation(s)
- Kohei Doyama
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Keiko Yamaji
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- * E-mail:
| | - Toshikatsu Haruma
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Atsushi Ishida
- Center for Ecological Research, Kyoto University, Otsu, Shiga, Japan
| | - Shigeta Mori
- Department of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
| | - Yoko Kurosawa
- Department of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
- United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate, Japan
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14
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Sytar O, Ghosh S, Malinska H, Zivcak M, Brestic M. Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants. PHYSIOLOGIA PLANTARUM 2021; 173:148-166. [PMID: 33219524 DOI: 10.1111/ppl.13285] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/19/2020] [Accepted: 11/17/2020] [Indexed: 05/19/2023]
Abstract
Most of the heavy metals (HMs), and metals/metalloids are released into the nature either by natural phenomenon or anthropogenic activities. Being sessile organisms, plants are constantly exposed to HMs in the environment. The metal non-hyperaccumulating plants are susceptible to excess metal concentrations. They tend to sequester metals in their root vacuoles by forming complexes with metal ligands, as a detoxification strategy. In contrast, the metal-hyperaccumulating plants have adaptive intrinsic regulatory mechanisms to hyperaccumulate or sequester excess amounts of HMs into their above-ground tissues rather than accumulating them in roots. They have unique abilities to successfully carry out normal physiological functions without showing any visible stress symptoms unlike metal non-hyperaccumulators. The unique abilities of accumulating excess metals in hyperaccumulators partly owes to constitutive overexpression of metal transporters and ability to quickly translocate HMs from root to shoot. Various metal ligands also play key roles in metal hyperaccumulating plants. These metal hyperaccumulating plants can be used in metal contaminated sites to clean-up soils. Exploiting the knowledge of natural populations of metal hyperaccumulators complemented with cutting-edge biotechnological tools can be useful in the future. The present review highlights the recent developments in physiological and molecular mechanisms of metal accumulation of hyperaccumulator plants in the lights of metal ligands and transporters. The contrasting mechanisms of metal accumulation between hyperaccumulators and non-hyperaccumulators are thoroughly compared. Moreover, uses of different metal hyperaccumulators for phytoremediation purposes are also discussed in detail.
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Affiliation(s)
- Oksana Sytar
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovakia
- Department of Plant Biology, Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Supriya Ghosh
- Department of Botany, University of Kalyani, Kalyani, Nadia-741235, India
| | - Hana Malinska
- Department of Biology, Jan Evangelista Purkyne University, Usti nad Labem, Czech Republic
| | - Marek Zivcak
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovakia
| | - Marian Brestic
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovakia
- Department of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
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15
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Mohiley A, Tielbörger K, Weber M, Clemens S, Gruntman M. Competition for light induces metal accumulation in a metal hyperaccumulating plant. Oecologia 2021; 197:157-165. [PMID: 34370097 DOI: 10.1007/s00442-021-05001-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 07/16/2021] [Indexed: 11/25/2022]
Abstract
Plants can respond to competition with a myriad of physiological or morphological changes. Competition has also been shown to affect the foraging decisions of plants belowground. However, a completely unexplored idea is that competition might also affect plants' foraging for specific elements required to inhibit the growth of their competitors. In this study, we examined the effect of simulated competition on root foraging and accumulation of heavy metals in the metal hyperaccumulating perennial plant Arabidopsis halleri, whose metal accumulation has been shown to provide allelopathic ability. A. halleri plants originating from both metalliferous and non-metalliferous soils were grown in a "split-root" setup with one root in a high-metal pot and the other in a low-metal one. The plants were then assigned to either simulated light competition or no-competition (control) treatments, using vertical green or clear plastic filters, respectively. While simulated light competition did not induce greater root allocation into the high-metal pots, it did result in enhanced metal accumulation by A. halleri, particularly in the less metal-tolerant plants, originating from non-metalliferous soils. Interestingly, this accumulation response was particularly enhanced for zinc rather than cadmium. These results provide support to the idea that the accumulation of metals by hyperaccumulating plants can be facultative and change according to their demand following competition.
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Affiliation(s)
- Anubhav Mohiley
- Institute of Evolution and Ecology, University of Tübingen, Tübingen, Germany
| | - Katja Tielbörger
- Institute of Evolution and Ecology, University of Tübingen, Tübingen, Germany
| | - Michael Weber
- Plant Physiology Department, University of Bayreuth, Bayreuth, Germany
| | - Stephan Clemens
- Plant Physiology Department, University of Bayreuth, Bayreuth, Germany
| | - Michal Gruntman
- Institute of Evolution and Ecology, University of Tübingen, Tübingen, Germany.
- School of Plant Sciences and Food Security, Porter School of the Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel.
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16
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Calcium Chelidonate: Semi-Synthesis, Crystallography, and Osteoinductive Activity In Vitro and In Vivo. Pharmaceuticals (Basel) 2021; 14:ph14060579. [PMID: 34204329 PMCID: PMC8235635 DOI: 10.3390/ph14060579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 12/17/2022] Open
Abstract
Calcium chelidonate [Ca(ChA)(H2O)3]n was obtained by semi-synthesis using natural chelidonic acid. The structure of the molecular complex was determined by X-ray diffraction analysis. The asymmetric unit of [Ca(ChA)(H2O)3]n includes chelidonic acid coordinated through three oxygen atoms, and three water ligands. The oxygen atoms of acid and oxygen atoms of water from each asymmetric unit are also coordinated to the calcium of another one, forming an infinite linear complex. Calcium geometry is close to the trigonal dodecahedron (D2d). The intra-complex hydrogen bonds additionally stabilize the linear species, which are parallel to the axis. In turn the linear species are packed into the 3D structure through mutual intercomplex hydrogen bonds. The osteogenic activity of the semi-synthetic CaChA was studied in vitro on 21-day hAMMSC culture and in vivo in mice using ectopic (subcutaneous) implantation of CaP-coated Ti plates saturated in vitro with syngeneic bone marrow. The enhanced extracellular matrix ECM mineralization in vitro and ectopic bone tissue formation in situ occurred while a water solution of calcium chelidonate at a dose of 10 mg/kg was used. The test substance promotes human adipose-derived multipotent mesenchymal stromal/stem cells (hAMMSCs), as well as mouse MSCs to differentiate into osteoblasts in vitro and in vivo, respectively. Calcium chelidonate is non-toxic and can stimulate osteoinductive processes.
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17
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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: 7] [Impact Index Per Article: 2.3] [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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18
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Zeng H, Wu H, Yan F, Yi K, Zhu Y. Molecular regulation of zinc deficiency responses in plants. JOURNAL OF PLANT PHYSIOLOGY 2021; 261:153419. [PMID: 33915366 DOI: 10.1016/j.jplph.2021.153419] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 05/27/2023]
Abstract
Zinc (Zn) is an essential micronutrient for plants and animals. Because of its low availability in arable soils worldwide, Zn deficiency is becoming a serious agricultural problem resulting in decreases of crop yield and nutritional quality. Plants have evolved multiple responses to adapt to low levels of soil Zn supply, involving biochemical and physiological changes to improve Zn acquisition and utilization, and defend against Zn deficiency stress. In this review, we summarize the physiological and biochemical adaptations of plants to Zn deficiency, the roles of transporters and metal-binding compounds in Zn homeostasis regulation, and the recent progresses in understanding the sophisticated regulatory mechanisms of Zn deficiency responses that have been made by molecular and genetic analyses, as well as diverse 'omics' studies. Zn deficiency responses are tightly controlled by multiple layers of regulation, such as transcriptional regulation that is mediated by transcription factors like F-group bZIP proteins, epigenetic regulation at the level of chromatin, and post-transcriptional regulation mediated by small RNAs and alternative splicing. The insights into the regulatory network underlying Zn deficiency responses and the perspective for further understandings of molecular regulation of Zn deficiency responses have been discussed. The understandings of the regulatory mechanisms will be important for improving Zn deficiency tolerance, Zn use efficiency, and Zn biofortification in plants.
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Affiliation(s)
- Houqing Zeng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Haicheng Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Feng Yan
- Institute of Agronomy and Plant Breeding, Justus Liebig University of Giessen, Giessen, 35392, Germany
| | - Keke Yi
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yiyong Zhu
- Agricultural Resource and Environment Experiment Teaching Center, College of Resource and Environment Science, Nanjing Agricultural University, Nanjing, 210095, China.
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19
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Hanikenne M, Esteves SM, Fanara S, Rouached H. Coordinated homeostasis of essential mineral nutrients: a focus on iron. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2136-2153. [PMID: 33175167 DOI: 10.1093/jxb/eraa483] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/13/2020] [Indexed: 05/22/2023]
Abstract
In plants, iron (Fe) transport and homeostasis are highly regulated processes. Fe deficiency or excess dramatically limits plant and algal productivity. Interestingly, complex and unexpected interconnections between Fe and various macro- and micronutrient homeostatic networks, supposedly maintaining general ionic equilibrium and balanced nutrition, are currently being uncovered. Although these interactions have profound consequences for our understanding of Fe homeostasis and its regulation, their molecular bases and biological significance remain poorly understood. Here, we review recent knowledge gained on how Fe interacts with micronutrient (e.g. zinc, manganese) and macronutrient (e.g. sulfur, phosphate) homeostasis, and on how these interactions affect Fe uptake and trafficking. Finally, we highlight the importance of developing an improved model of how Fe signaling pathways are integrated into functional networks to control plant growth and development in response to fluctuating environments.
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Affiliation(s)
- Marc Hanikenne
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, 4000 Liège, Belgium
| | - Sara M Esteves
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, 4000 Liège, Belgium
| | - Steven Fanara
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, 4000 Liège, Belgium
| | - Hatem Rouached
- BPMP, Univ. Montpellier, CNRS, INRA, Montpellier SupAgro, Montpellier, France
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
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20
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Ricachenevsky FK, Punshon T, Salt DE, Fett JP, Guerinot ML. Arabidopsis thaliana zinc accumulation in leaf trichomes is correlated with zinc concentration in leaves. Sci Rep 2021; 11:5278. [PMID: 33674630 PMCID: PMC7935932 DOI: 10.1038/s41598-021-84508-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/17/2021] [Indexed: 11/21/2022] Open
Abstract
Zinc (Zn) is a key micronutrient for plants and animals, and understanding Zn homeostasis in plants can improve both agriculture and human health. While root Zn transporters in plant model species have been characterized in detail, comparatively little is known about shoot processes controlling Zn concentrations and spatial distribution. Previous work showed that Zn hyperaccumulator species such as Arabidopsis halleri accumulate Zn and other metals in leaf trichomes. To date there is no systematic study regarding Zn accumulation in the trichomes of the non-accumulating, genetic model species A. thaliana. Here, we used Synchrotron X-Ray Fluorescence mapping to show that Zn accumulates at the base of trichomes of A. thaliana. Using transgenic and natural accessions of A thaliana that vary in bulk leaf Zn concentration, we demonstrate that higher leaf Zn increases total Zn found at the base of trichome cells. Our data indicates that Zn accumulation in trichomes is a function of the Zn status of the plant, and provides the basis for future studies on a genetically tractable plant species to understand the molecular steps involved in Zn spatial distribution in leaves.
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Affiliation(s)
- Felipe K Ricachenevsky
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil. .,Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, Porto Alegre, RS, 9500, Brazil. .,Department of Biological Sciences, Life Sciences Center, Dartmouth College, 78 College St, Hanover, NH, 03755, USA.
| | - Tracy Punshon
- Department of Biological Sciences, Life Sciences Center, Dartmouth College, 78 College St, Hanover, NH, 03755, USA
| | - David E Salt
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - Janette P Fett
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil.,Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, Porto Alegre, RS, 9500, Brazil
| | - Mary Lou Guerinot
- Department of Biological Sciences, Life Sciences Center, Dartmouth College, 78 College St, Hanover, NH, 03755, USA.
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21
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Quan L, Zhang J, Wei Q, Wang Y, Qin C, Hu F, Chen Y, Shen Z, Xia Y. Promotion of Zinc Tolerance, Acquisition and Translocation of Phosphorus in Mimosa pudica L. Mediated by Arbuscular Mycorrhizal Fungi. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 106:507-515. [PMID: 33559032 DOI: 10.1007/s00128-021-03113-x] [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: 06/24/2020] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
Heavy metal contamination of soil is of increasing concern because of its potential risk to human health. In this study, two AMFs (Rhizophagus intraradices and Funneliformis mosseae) substantially increased the biomass of bashfulgrass in Zn-contaminated soil, even at Zn levels of up to 600 mg kg-1. Zn uptake in R. intraradices- and F. mosseae-mycorrhizal bashfulgrass was increased by 40-fold and 7-fold, respectively, when plants grown in Zn-contaminated (400 mg kg-1) soil. Elemental analysis showed that neither AMF had an effect on Zn concentration in plant tissues, including the roots and shoots. However, a significant increase of phosphorus (P) concentration was observed, suggesting the increased is from the improved use efficiency of soil nutrients by AMFs. Comparing the two AMFs, better growth performance with more biomass occurred with R. intraradices-inoculated bashfulgrass in Zn-contaminated soil. This is consistent with R. intraradices being more tolerant to Zn than F. mosseae, indicated by a higher colonization percentage in bashfulgrass roots. Taken together, our data indicate that AMFs possibly improve acquisition and translocation of P to promote increased biomass. Moreover, mycorrhiza did not enhance Zn accumulation in shoots and roots of bashfulgrass at the same Zn level. In the future, developing AMF (especially R. intraradices) inoculation of plants might be a desirable means of safe production of ornamental plants in metal-polluted soil.
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Affiliation(s)
- Lingtong Quan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiahao Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qingpeng Wei
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ying Wang
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Chun Qin
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Hu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China
| | - Yan Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China.
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22
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Van Houdt R, Vandecraen J, Leys N, Monsieurs P, Aertsen A. Adaptation of Cupriavidus metallidurans CH34 to Toxic Zinc Concentrations Involves an Uncharacterized ABC-Type Transporter. Microorganisms 2021; 9:microorganisms9020309. [PMID: 33540705 PMCID: PMC7912956 DOI: 10.3390/microorganisms9020309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 01/29/2021] [Accepted: 01/31/2021] [Indexed: 12/30/2022] Open
Abstract
Cupriavidus metallidurans CH34 is a well-studied metal-resistant β-proteobacterium and contains a battery of genes participating in metal metabolism and resistance. Here, we generated a mutant (CH34ZnR) adapted to high zinc concentrations in order to study how CH34 could adaptively further increase its resistance against this metal. Characterization of CH34ZnR revealed that it was also more resistant to cadmium, and that it incurred seven insertion sequence-mediated mutations. Among these, an IS1088 disruption of the glpR gene (encoding a DeoR-type transcriptional repressor) resulted in the constitutive expression of the neighboring ATP-binding cassette (ABC)-type transporter. GlpR and the adjacent ABC transporter are highly similar to the glycerol operon regulator and ATP-driven glycerol importer of Rhizobium leguminosarum bv. viciae VF39, respectively. Deletion of glpR or the ABC transporter and complementation of CH34ZnR with the parental glpR gene further demonstrated that loss of GlpR function and concomitant derepression of the adjacent ABC transporter is pivotal for the observed resistance phenotype. Importantly, addition of glycerol, presumably by glycerol-mediated attenuation of GlpR activity, also promoted increased zinc and cadmium resistance in the parental CH34 strain. Upregulation of this ABC-type transporter is therefore proposed as a new adaptation route towards metal resistance.
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Affiliation(s)
- Rob Van Houdt
- Microbiology Unit, Interdisciplinary Biosciences, Belgian Nuclear Research Centre (SCK CEN), 2400 Mol, Belgium; (J.V.); (N.L.); (P.M.)
- Correspondence:
| | - Joachim Vandecraen
- Microbiology Unit, Interdisciplinary Biosciences, Belgian Nuclear Research Centre (SCK CEN), 2400 Mol, Belgium; (J.V.); (N.L.); (P.M.)
- Laboratory of Food Microbiology, Department of Microbial and Molecular Systems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, 3000 Leuven, Belgium;
| | - Natalie Leys
- Microbiology Unit, Interdisciplinary Biosciences, Belgian Nuclear Research Centre (SCK CEN), 2400 Mol, Belgium; (J.V.); (N.L.); (P.M.)
| | - Pieter Monsieurs
- Microbiology Unit, Interdisciplinary Biosciences, Belgian Nuclear Research Centre (SCK CEN), 2400 Mol, Belgium; (J.V.); (N.L.); (P.M.)
| | - Abram Aertsen
- Laboratory of Food Microbiology, Department of Microbial and Molecular Systems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, 3000 Leuven, Belgium;
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Papierniak-Wygladala A, Kozak K, Barabasz A, Palusińska M, Całka M, Maślińska K, Antosiewicz DM. Identification and characterization of a tobacco metal tolerance protein, NtMTP2. Metallomics 2020; 12:2049-2064. [PMID: 33169749 DOI: 10.1039/d0mt00210k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metal tolerance proteins (MTPs) from the CDF (Cation Diffusion Facilitator) family are efflux transporters that play a crucial role in metal homeostasis by maintaining optimal metal concentrations in the cytoplasm. Here, a novel tobacco NtMTP2 transporter was cloned and characterized. It encodes a 512 aa protein containing all specific CDF family domains. A GFP-NtMTP2 fusion protein localizes to the tonoplast in tobacco cells. NtMTP2 expression in yeast conferred tolerance to Co and Ni, indicating that the protein mediates transport of both metals, but not Zn, Mn, Cu, Fe, or Cd. Nonetheless, the expression level was not affected by Co or Ni, except for an increase in leaves at high Co concentrations. Its expression in plant parts remained stable during development, but increased in the leaves of older plants. Analysis of tobacco expressing a promoter-GUS construct indicates that the main sites of promoter activity are the conductive tissue throughout the plant and the palisade parenchyma in leaves. Our results suggest that NtMTP2 is a tonoplast transporter mediating sequestration of Co and Ni into vacuoles and an important housekeeping protein that controls the basal availability of micronutrients and plays a role in the sequestration of metal excess, specifically in leaves.
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Affiliation(s)
- Anna Papierniak-Wygladala
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, 1 Miecznikowa Str. 02-096, Warszawa, Poland.
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Hodomihou NR, Feder F, Legros S, Formentini TA, Lombi E, Doelsch E. Zinc Speciation in Organic Waste Drives Its Fate in Amended Soils. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12034-12041. [PMID: 32852945 DOI: 10.1021/acs.est.0c02721] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recycling of organic waste (OW) as fertilizer on farmland is a widespread practice that fosters sustainable development via resource reuse. However, the advantages of OW fertilization should be weighed against the potentially negative environmental impacts due to the presence of contaminants such as zinc (Zn). Current knowledge on the parameters controlling the environmental fate of Zn following OW application on cultivated soils is scant. We addressed this shortcoming by combining soil column experiments and Zn speciation characterization in OWs and amended soils. Soil column experiments were first carried out using two contrasted soils (sandy soil and sandy clay loam) that were amended with sewage sludge or poultry manure and cropped with lettuce. The soil columns were irrigated with identical amounts of water twice a week, and the leachates collected at the column outlet were monitored and analyzed. This scheme (OW application and lettuce crop cycle) was repeated for each treatment. Lettuce yields and Zn uptake were assessed at the end of each cycle. The soil columns were dismantled and seven soil layers were sampled and analyzed at the end of the second cycle (total experiment time: 12 weeks). X-ray absorption spectroscopy analyses were then conducted to assess Zn speciation in OW and OW-amended soils. The results of this study highlighted that (i) the fate of Zn in water-soil-plant compartments was similar, regardless of the type of soil and OW, (ii) >97.6% of the Zn input from OW accumulated in the soil surface layer, (iii) Zn uptake by lettuce increased with repeated OW applications, and (iv) no radical change in Zn speciation was observed at the end of the 12-week experiment, and phosphate was found to drive Zn speciation in both OW and amended soils (i.e., amorphous Zn-phosphate and Zn sorbed on hydoxylapatite). These results suggest that Zn speciation in OW is a key determinant controlling the environmental fate of this element in OW-amended soils.
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Affiliation(s)
- Nounagnon Richard Hodomihou
- UPR Recyclage et Risque, CIRAD, 18524 Dakar, Senegal
- Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
| | - Frédéric Feder
- UPR Recyclage et Risque, CIRAD, 18524 Dakar, Senegal
- Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
| | - Samuel Legros
- UPR Recyclage et Risque, CIRAD, 18524 Dakar, Senegal
- Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
| | - Thiago Augusto Formentini
- Laboratory of Environmental Engineering, Federal University of Santa Maria (UFSM), 97105-900 Santa Maria, Rio Grande do Sul, Brazil
- Department of Soil and Environment, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Adelaide, South Australia 5095, Australia
| | - Emmanuel Doelsch
- Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
- UPR Recyclage et Risque, CIRAD, F-34398 Montpellier, France
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Lwalaba JLW, Zvobgo G, Mwamba TM, Louis LT, Fu L, Kirika BA, Tshibangu AK, Adil MF, Sehar S, Mukobo RP, Zhang G. High accumulation of phenolics and amino acids confers tolerance to the combined stress of cobalt and copper in barley (Hordeum vulagare). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 155:927-937. [PMID: 32932124 DOI: 10.1016/j.plaphy.2020.08.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/18/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
Cobalt (Co) and copper (Cu) co-exist in the metal contaminated soils and cause the serious toxicity to crops, while their interactive effect on plant growth and development is still poorly understood. In this work, a hydroponic experiment was carried out to reveal the interactive effect of Co and Cu on photosynthesis and metabolite profiles of two barley genotypes differing in metal tolerance. The results showed that both single and combined treatments of Co and Cu caused a significant reduction in chlorophyll content and photosynthetic rate of the two barley (Hordeum vulgare) genotypes, with the effect being greater for the combined treatment and the sensitive genotype (Ea52) being more affected than the tolerant genotype (Yan66). Compared to Cu or Co treatment alone, the combined treatment significantly increased the levels of phenolic components, including cinnamic derivatives (caffeic, chlorogenic, ferullic, p-coumaric); benzoic derivatives (p-hydroxybenzoic, vanillic, syringic, sallicilic, protocatechuic acid) as well as free amino acids, with Yan66 having more accumulation than Ea52. Meanwhile, under the combined treatment, the phenylalanine ammonialyase-related gene (HvPAL) was highly regulated along with the genes involved in the synthesis of malate (HvMDH) and citrate (HvCSY), with Ya66 showing the higher expression of these genes than Ea52. It can be concluded that higher Cu and Co stress tolerance in Yan66 is attributed to more accumulation of the metabolites including phenolics and amino acids.
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Affiliation(s)
- Jonas Lwalaba Wa Lwalaba
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China; Department of Crops sciences, Faculty of Agronomy, Université de Lubumbashi, PO Box 1825, Lubumbashi, DR, Congo
| | - Gerald Zvobgo
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China
| | - Theodore Mulembo Mwamba
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China; Department of Crops sciences, Faculty of Agronomy, Université de Lubumbashi, PO Box 1825, Lubumbashi, DR, Congo
| | - Laurence Tennyson Louis
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China
| | - Liangbo Fu
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China
| | - Bibich Ansey Kirika
- Department of Crops sciences, Faculty of Agronomy, Université de Lubumbashi, PO Box 1825, Lubumbashi, DR, Congo
| | - Audry Kazadi Tshibangu
- Department of Crops sciences, Faculty of Agronomy, Université de Lubumbashi, PO Box 1825, Lubumbashi, DR, Congo
| | - Muhammad Faheem Adil
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China
| | - Shafaque Sehar
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China
| | - Robert Prince Mukobo
- Department of Crops sciences, Faculty of Agronomy, Université de Lubumbashi, PO Box 1825, Lubumbashi, DR, Congo
| | - Guoping Zhang
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, PR China.
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26
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Xie R, Zhao J, Lu L, Brown P, Guo J, Tian S. Penetration of foliar-applied Zn and its impact on apple plant nutrition status: in vivo evaluation by synchrotron-based X-ray fluorescence microscopy. HORTICULTURE RESEARCH 2020; 7:147. [PMID: 32922819 PMCID: PMC7459125 DOI: 10.1038/s41438-020-00369-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/05/2020] [Accepted: 06/19/2020] [Indexed: 05/16/2023]
Abstract
The absorption of foliar fertilizer is a complex process and is poorly understood. The ability to visualize and quantify the pathway that elements take following their application to leaf surfaces is critical for understanding the science and for practical applications of foliar fertilizers. By the use of synchrotron-based X-ray fluorescence to analyze the in vivo localization of elements, our study aimed to investigate the penetration of foliar-applied Zn absorbed by apple (Malus domestica Borkh.) leaves with different physiological surface properties, as well as the possible interactions between foliar Zn level and the mineral nutrient status of treated leaves. The results indicate that the absorption of foliar-applied Zn was largely dependent on plant leaf surface characteristics. High-resolution elemental maps revealed that the high binding capacity of the cell wall for Zn contributed to the observed limitation of Zn penetration across epidermal cells. Trichome density and stomatal aperture had opposite effects on Zn fertilizer penetration: a relatively high density of trichomes increased the hydrophobicity of leaves, whereas the presence of stomata facilitated foliar Zn penetration. Low levels of Zn promoted the accumulation of other mineral elements in treated leaves, and the complexation of Zn with phytic acid potentially occurred owing to exposure to high-Zn conditions. The present study provides direct visual evidence for the Zn penetration process across the leaf surface, which is important for the development of strategies for Zn biofortification in crop species.
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Affiliation(s)
- Ruohan Xie
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, 310058 China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou, 310058 China
| | - Jianqi Zhao
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, 310058 China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou, 310058 China
| | - Lingli Lu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, 310058 China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou, 310058 China
| | - Patrick Brown
- Department of Plant Sciences, University of California, Davis, CA 95616 USA
| | - Jiansheng Guo
- Department of Pathology of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310020 China
- Center of Cryo-Electron Microscopy, Zhejiang University School of Medicine, Hangzhou, 310058 China
| | - Shengke Tian
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, 310058 China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou, 310058 China
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27
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Xie R, Zhao J, Lu L, Brown P, Lin X, Webb SM, Ge J, Antipova O, Li L, Tian S. Seasonal Zinc Storage and a Strategy for Its Use in Buds of Fruit Trees. PLANT PHYSIOLOGY 2020; 183:1200-1212. [PMID: 32423902 PMCID: PMC7333724 DOI: 10.1104/pp.19.01563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/09/2020] [Indexed: 05/04/2023]
Abstract
Bud dormancy allows deciduous perennial plants to rapidly grow following seasonal cold conditions. Although many studies have examined the hormonal regulation of bud growth, the role of nutrients remains unclear. Insufficient accumulation of the key micronutrient zinc (Zn) in dormant buds affects the vegetative and reproductive growth of perennial plants during the subsequent year, requiring the application of Zn fertilizers in orchard management to avoid growth defects in fruit trees. However, the mechanisms of seasonal Zn homeostasis in perennial plants remain poorly understood. Here, we provide new insights into Zn distribution and speciation within reproductive and vegetative buds of apple (Malus domestica) and four other deciduous fruit trees (peach [Amygdalus persica], grape [Vitis vinifera], pistachio [Pistacia vera], and blueberry [Vaccinium spp.]) using microscopic and spectroscopic characterization techniques comprising synchrotron-based x-ray fluorescence and x-ray absorption near-edge-structure analyses. By establishing a link between bud development and Zn distribution, we identified the following important steps of Zn storage and use in deciduous plants: Zn is preferentially deposited in the stem nodes subtending apical and axillary buds; Zn may then be sequestered as Zn-phytate prior to dormancy; in spring, Zn effectively releases for use during budbreak and subsequent meristematic growth. The mechanisms of Zn homeostasis during the seasonal cycles of plant growth and dormancy described here will contribute to improving orchard management, and to selection and breeding of deciduous perennial species.
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Affiliation(s)
- Ruohan Xie
- Ministry of Education (MOE) Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Jianqi Zhao
- Ministry of Education (MOE) Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Lingli Lu
- Ministry of Education (MOE) Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Patrick Brown
- Department of Plant Sciences, University of California, Davis, California 95616
| | - Xianyong Lin
- Ministry of Education (MOE) Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Samuel M Webb
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025
| | - Jun Ge
- Ministry of Education (MOE) Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Olga Antipova
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439
| | - Luxi Li
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439
| | - Shengke Tian
- Ministry of Education (MOE) Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China
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28
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Yan A, Wang Y, Tan SN, Mohd Yusof ML, Ghosh S, Chen Z. Phytoremediation: A Promising Approach for Revegetation of Heavy Metal-Polluted Land. FRONTIERS IN PLANT SCIENCE 2020; 11:359. [PMID: 32425957 PMCID: PMC7203417 DOI: 10.3389/fpls.2020.00359] [Citation(s) in RCA: 362] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/12/2020] [Indexed: 05/18/2023]
Abstract
Heavy metal accumulation in soil has been rapidly increased due to various natural processes and anthropogenic (industrial) activities. As heavy metals are non-biodegradable, they persist in the environment, have potential to enter the food chain through crop plants, and eventually may accumulate in the human body through biomagnification. Owing to their toxic nature, heavy metal contamination has posed a serious threat to human health and the ecosystem. Therefore, remediation of land contamination is of paramount importance. Phytoremediation is an eco-friendly approach that could be a successful mitigation measure to revegetate heavy metal-polluted soil in a cost-effective way. To improve the efficiency of phytoremediation, a better understanding of the mechanisms underlying heavy metal accumulation and tolerance in plant is indispensable. In this review, we describe the mechanisms of how heavy metals are taken up, translocated, and detoxified in plants. We focus on the strategies applied to improve the efficiency of phytostabilization and phytoextraction, including the application of genetic engineering, microbe-assisted and chelate-assisted approaches.
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Affiliation(s)
- An Yan
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, Singapore
| | - Yamin Wang
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, Singapore
| | - Swee Ngin Tan
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, Singapore
| | | | - Subhadip Ghosh
- Centre for Urban Greenery and Ecology, National Parks Board, Singapore, Singapore
- School of Environmental and Rural Science, University of New England, Armidale, NSW, Australia
| | - Zhong Chen
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, Singapore
- M Grass International Institute of Smart Urban Greenology, Singapore, Singapore
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29
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Mishra B, McDonald LM, Roy M, Lanzirotti A, Myneni SCB. Uptake and speciation of zinc in edible plants grown in smelter contaminated soils. PLoS One 2020; 15:e0226180. [PMID: 32302305 PMCID: PMC7164604 DOI: 10.1371/journal.pone.0226180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 11/20/2019] [Indexed: 11/25/2022] Open
Abstract
Heavy metal accumulation in edible plants grown in contaminated soils poses a major environmental risk to humans and grazing animals. This study focused on the concentration and speciation of Zn in different edible plants grown in soils contaminated with smelter wastes (Spelter, WV, USA) containing high levels of the metals Zn, Cu, Pb, Cd. Their accumulation was examined in different parts (roots, stem, and leaves) of plants and as a function of growth stage (dry seed, sprouting seed, cotyledon, and leaves) in the root vegetables radish, the leafy vegetable spinach and the legume clover. Although the accumulation of metals varied significantly with plant species, the average metal concentrations were [Zn] > [Pb] > [Cu] > [Cd]. Metal uptake studies were complemented with bulk and micro X-ray absorption spectroscopy (XAS) at Zn K-edge and micro X-ray fluorescence (μXRF) measurements to evaluate the speciation and distribution of Zn in these plant species. Dynamic interplay between the histidine and malate complexation of Zn was observed in all plant species. XRF mapping of spinach leaves at micron spatial resolution demonstrated the accumulation of Zn in vacuoles and leaf tips. Radish root showed accumulation of Zn in root hairs, likely as ZnS nanoparticles. At locations of high Zn concentration in spinach leaves, μXANES suggests Zn complexation with histidine, as opposed to malate in the bulk leaf. These findings shed new light on the dynamic nature of Zn speciation in plants.
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Affiliation(s)
- Bhoopesh Mishra
- School of Chemical and Process Engineering, University of Leeds, Leeds, England, United Kingdom
- Department of Physics, Illinois Institute of Technology, Chicago, Illinois, United States of America
- * E-mail:
| | - Louis M. McDonald
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, West Virginia, United States of America
| | - Mimi Roy
- Jindal School of Liberal Arts and Humanities, OP Jindal Global University, Sonipat, Haryana, India
| | - Antonio Lanzirotti
- GeoSoil CARS, University of Chicago, Chicago, Illinois, United States of America
| | - Satish C. B. Myneni
- Department of Geosciences, Princeton University, Princeton, New Jersey, United States of America
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30
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Mineralogy and Zn Chemical Speciation in a Soil-Plant System from a Metal-Extreme Environment: A Study on Helichrysum microphyllum subsp. tyrrhenicum (Campo Pisano Mine, SW Sardinia, Italy). MINERALS 2020. [DOI: 10.3390/min10030259] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Environmental contamination due to human activities is a worldwide problem that has led to the development of different remediation techniques, including biotechnological approaches such as phytoextraction and phytostabilization. These techniques take advantage of pioneer plants that naturally develop tolerance mechanisms to survive in extreme environments. A multi-technique and multi-disciplinary approach was applied for the investigation of Helichrysum microphyllum subsp. tyrrhenicum samples, bulk soil, and rhizospheres collected from a metal-extreme environment (Zn-Pb mine of Campo Pisano, SW Sardinia, Italy). Zinc, Pb, and Cd are the most abundant metals, with Zn attaining 3 w/w% in the rhizosphere solid materials, inducing oxidative stress in the roots as revealed by infrared microspectroscopy (IR). X-ray diffraction (XRD), scanning electron microscopy (SEM), and chemical analysis coupled with synchrotron radiation-based (SR) techniques demonstrate that quartz, dolomite, and weddellite biominerals precipitate in roots, stems, and leaves, likely as a response to environmental stress. In the rhizosphere, Zn chemical speciation is mainly related to the Zn ore minerals (smithsonite and hydrozincite) whereas, in plant tissues, Zn is primarily bound to organic compounds such as malate, cysteine, and histidine molecules that act as metal binders and, eventually, detoxification agents for the Zn excess. These findings suggest that H. microphyllum subsp. tyrrhenicum has developed its own adaptation strategy to survive in polluted substrates, making it a potential candidate for phytostabilization aimed at mitigating the dispersion of metals in the surrounding areas.
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Fukuda N, Kitajima N, Terada Y, Abe T, Nakai I, Hokura A. Visible cellular distribution of cadmium and zinc in the hyperaccumulator Arabidopsis halleri ssp. gemmifera determined by 2-D X-ray fluorescence imaging using high-energy synchrotron radiation. Metallomics 2020; 12:193-203. [DOI: 10.1039/c9mt00243j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SR-μ-XRF imaging has revealed that the distribution of Zn in leaves was different from that of Cd at a cellular level.
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Affiliation(s)
- Naoki Fukuda
- Department of Applied Chemistry
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | | | | | | | - Izumi Nakai
- Department of Applied Chemistry
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | - Akiko Hokura
- Department of Applied Chemistry
- Tokyo University of Science
- Tokyo 162-8601
- Japan
- Department of Applied Chemistry
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32
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Burger A, Weidinger M, Adlassnig W, Puschenreiter M, Lichtscheidl I. Response of Arabidopsis halleri to cesium and strontium in hydroponics: Extraction potential and effects on morphology and physiology. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109625. [PMID: 31518824 DOI: 10.1016/j.ecoenv.2019.109625] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 08/13/2019] [Accepted: 08/28/2019] [Indexed: 05/27/2023]
Abstract
Stable isotopes of cesium (Cs) and strontium (Sr) as well as their radioactive isotopes are of serious environmental concern. The pollution of the biosphere, particularly soil and water has received considerable attention for removal of these contaminants in recent years. Arabidopsis halleri (A. halleri) is a hyperaccumulator plant species able to take up large amounts of several metals into its above ground organs without showing significant signs of toxicity. Therefore, we investigated responses, metal accumulation and element distribution in roots and leaves of A. halleri after treatment with stable Cs and Sr. Plants were hydroponically grown in different concentrations of cesium sulfate (between 0.002 and 20 mM) and strontium nitrate (between 0.001 and 100 mM). Uptake of Cs and Sr into leaves was analyzed from extracts by inductively coupled plasma mass spectrometry (ICP-MS). Although internal concentration of Cs and Sr increased with rising external concentrations, the amount of accumulated metal in relation to available metal decreased. Therefore, the potential of the plant to effectively transfer metals from growth medium to leaves occurred at low and moderate concentrations, whereas after that when the concentration of metal increased further the transfer factors were decreased. A. halleri accumulated Sr more efficiently than Cs. The transfer factors were higher for Sr (up to 184) than for Cs (up to 16). The results indicate positive correlation of Cs and Sr accumulation to K and Ca transport to leaves. The toxicity of Cs and Sr was assessed by measuring photosynthetic efficiency and growth parameters. In leaves, Cs and Sr affected the chlorophyll fluorescence at their low and high concentrations. Significant reduction of plant growth (dry weight of roots and leaves) was observed at Sr concentrations >0.01 mM. Cs-treated plants exhibited only decreased length of leaves at concentrations>0.02 mM. The distribution of the elements within the different tissues of leaves and roots was investigated by using Energy Dispersive X-Ray microanalysis (EDX) with a scanning electron microscope (SEM). EDX revealed that Cs and Sr were accumulated differently in root and leaf tissues. The hydroponic experiment showed a potential for A. halleri to treat hotspots with radioactive Cs and Sr.
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Affiliation(s)
- Anna Burger
- University of Vienna, Core Facility Cell Imaging and Ultrastructure Research, Althanstrasse 14, A-1090, Vienna, Austria.
| | - Marieluise Weidinger
- University of Vienna, Core Facility Cell Imaging and Ultrastructure Research, Althanstrasse 14, A-1090, Vienna, Austria
| | - Wolfram Adlassnig
- University of Vienna, Core Facility Cell Imaging and Ultrastructure Research, Althanstrasse 14, A-1090, Vienna, Austria
| | - Markus Puschenreiter
- University of Natural Resources and Life Sciences Vienna, Department of Forest and Soil Sciences Konrad-Lorenz-Straße 24, 3430, Tulln, Austria
| | - Irene Lichtscheidl
- University of Vienna, Core Facility Cell Imaging and Ultrastructure Research, Althanstrasse 14, A-1090, Vienna, Austria
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Zhang ZH, Zhou T, Tang TJ, Song HX, Guan CY, Huang JY, Hua YP. A multiomics approach reveals the pivotal role of subcellular reallocation in determining rapeseed resistance to cadmium toxicity. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5437-5455. [PMID: 31232451 PMCID: PMC6793439 DOI: 10.1093/jxb/erz295] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 06/13/2019] [Indexed: 05/04/2023]
Abstract
Oilseed rape (Brassica napus) has great potential for phytoremediation of cadmium (Cd)-polluted soils due to its large plant biomass production and strong metal accumulation. Enhanced plant Cd resistance (PCR) is a crucial prerequisite for phytoremediation through hyper-accumulation of excess Cd. However, the complexity of the allotetraploid genome of rapeseed hinders our understanding of PCR. To explore rapeseed Cd-resistance mechanisms, we examined two genotypes, 'ZS11' (Cd-resistant) and 'W10' (Cd-sensitive), that exhibit contrasting PCR while having similar tissue Cd concentrations, and characterized their different fingerprints in terms of plant morphophysiology (electron microscopy), ion abundance (inductively coupled plasma mass spectrometry), DNA variation (whole-genome resequencing), transcriptomics (high-throughput mRNA sequencing), and metabolomics (ultra-high performance liquid chromatography-mass spectrometry). Fine isolation of cell components combined with ionomics revealed that more Cd accumulated in the shoot vacuoles and root pectins of the resistant genotype than in the sensitive one. Genome and transcriptome sequencing identified numerous DNA variants and differentially expressed genes involved in pectin modification, ion binding, and compartmentalization. Transcriptomics-assisted gene co-expression networks characterized BnaCn.ABCC3 and BnaA8.PME3 as the central members involved in the determination of rapeseed PCR. High-resolution metabolic profiles revealed greater accumulation of shoot Cd chelates, and stronger biosynthesis and higher demethylation of root pectins in the resistant genotype than in the sensitive one. Our comprehensive examination using a multiomics approach has greatly improved our understanding of the role of subcellular reallocation of Cd in the determination of PCR.
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Affiliation(s)
- Zhen-Hua Zhang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Ting Zhou
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Tian-Jiao Tang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Hai-Xing Song
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
| | - Chun-Yun Guan
- National Center of Oilseed Crop Improvement, Hunan Branch, Changsha, China
| | - Jin-Yong Huang
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
| | - Ying-Peng Hua
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- Correspondence:
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Whiteside MD, Werner GDA, Caldas VEA, Van't Padje A, Dupin SE, Elbers B, Bakker M, Wyatt GAK, Klein M, Hink MA, Postma M, Vaitla B, Noë R, Shimizu TS, West SA, Kiers ET. Mycorrhizal Fungi Respond to Resource Inequality by Moving Phosphorus from Rich to Poor Patches across Networks. Curr Biol 2019; 29:2043-2050.e8. [PMID: 31178314 PMCID: PMC6584331 DOI: 10.1016/j.cub.2019.04.061] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/04/2019] [Accepted: 04/23/2019] [Indexed: 01/01/2023]
Abstract
The world's ecosystems are characterized by an unequal distribution of resources [1]. Trade partnerships between organisms of different species-mutualisms-can help individuals cope with such resource inequality [2-4]. Trade allows individuals to exchange commodities they can provide at low cost for resources that are otherwise impossible or more difficult to access [5, 6]. However, as resources become increasingly patchy in time or space, it is unknown how organisms alter their trading strategies [7, 8]. Here, we show how a symbiotic fungus mediates trade with a host root in response to different levels of resource inequality across its network. We developed a quantum-dot-tracking technique to quantify phosphorus-trading strategies of arbuscular mycorrhizal fungi simultaneously exposed to rich and poor resource patches. By following fluorescent nanoparticles of different colors across fungal networks, we determined where phosphorus was hoarded, relocated, and transferred to plant hosts. We found that increasing exposure to inequality stimulated trade. Fungi responded to high resource variation by (1) increasing the total amount of phosphorus distributed to host roots, (2) decreasing allocation to storage, and (3) differentially moving resources within the network from rich to poor patches. Using single-particle tracking and high-resolution video, we show how dynamic resource movement may help the fungus capitalize on value differences across the trade network, physically moving resources to areas of high demand to gain better returns. Such translocation strategies can help symbiotic organisms cope with exposure to resource inequality.
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Affiliation(s)
- Matthew D Whiteside
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands
| | - Gijsbert D A Werner
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford OX1 3SZ, UK; Balliol College, University of Oxford, Oxford OX1 3BJ, UK
| | - Victor E A Caldas
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands; AMOLF Institute, Science Park 104, 1098 XG Amsterdam, the Netherlands
| | - Anouk Van't Padje
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands
| | - Simon E Dupin
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands
| | - Bram Elbers
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands
| | - Milenka Bakker
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands
| | - Gregory A K Wyatt
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford OX1 3SZ, UK
| | - Malin Klein
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands
| | - Mark A Hink
- Section of Molecular Cytology and van Leeuwenhoek Centre for Advanced Microscopy, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Marten Postma
- Section of Molecular Cytology and van Leeuwenhoek Centre for Advanced Microscopy, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Bapu Vaitla
- Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - Ronald Noë
- Faculté Psychologie, Université de Strasbourg, 12 Rue Goethe, 67000 Strasbourg, France
| | - Thomas S Shimizu
- AMOLF Institute, Science Park 104, 1098 XG Amsterdam, the Netherlands
| | - Stuart A West
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford OX1 3SZ, UK
| | - E Toby Kiers
- Department of Ecological Science, Vrije Universiteit, De Boelelaan 108, 1081 HV Amsterdam, the Netherlands.
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Galiová MV, Száková J, Prokeš L, Čadková Z, Coufalík P, Kanický V, Otruba V, Tlustoš P. Variability of trace element distribution in Noccaea spp., Arabidopsis spp., and Thlaspi arvense leaves: the role of plant species and element accumulation ability. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:181. [PMID: 30798372 DOI: 10.1007/s10661-019-7331-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) was applied for the determination of Cd and Zn distributions within the leaves of Cd- and Zn-hyperaccumulating plants, Noccaea caerulescens, N. praecox, and Arabidopsis halleri, in contrast to nonaccumulator species, Thlaspi arvense and A. thaliana. The elemental mapping of the selected leaf area was accomplished via line scans with a 110-μm-diameter laser beam at a 37-μm s-1 scan speed and repetition rate of 10 Hz. The lines were spaced 180 μm apart and ablated at an energy density of 2 J cm-2. The elemental imaging clearly confirmed that Cd was predominantly distributed within the parenchyma of the T. arvense, whereas in the Noccaea spp. and A. halleri, the highest intensity Cd signal was observed in the veins of the leaves. For Zn, higher intensities were observed in the veins for all the plant species except for A. thaliana. Close relationships between Zn and Ca were identified for the Noccaea spp. leaves. These relationships were not confirmed for A. halleri. Significant correlations were also proved between the Cd and Zn distribution in A. halleri, but not for the Noccaea spp. For both T. arvense and A. thaliana, no relevant significant relationship for the interpretation of the results was observed. Thus, the LA-ICP-MS imaging is proved as a relevant technique for the description and understanding of the elements in hyperaccumulating or highly accumulating plant species, although its sensitivity for the natural element contents in nonaccumulator plant species is still insufficient.
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Affiliation(s)
- Michaela Vašinová Galiová
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Jiřina Száková
- Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Science Prague, Kamýcká 129, 165 21, Prague-Suchdol, Czech Republic.
| | - Lubomír Prokeš
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
| | - Zuzana Čadková
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Science Prague, Kamýcká 129, 165 21, Prague-Suchdol, Czech Republic
| | - Pavel Coufalík
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
- Institute of Analytical Chemistry, The Czech Academy of Sciences, v.v.i., Veveří 97, 602 00, Brno, Czech Republic
| | - Viktor Kanický
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Vítězslav Otruba
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Pavel Tlustoš
- Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Science Prague, Kamýcká 129, 165 21, Prague-Suchdol, Czech Republic
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Salducci MD, Folzer H, Issartel J, Rabier J, Masotti V, Prudent P, Affre L, Hardion L, Tatoni T, Laffont-Schwob I. How can a rare protected plant cope with the metal and metalloid soil pollution resulting from past industrial activities? Phytometabolites, antioxidant activities and root symbiosis involved in the metal tolerance of Astragalus tragacantha. CHEMOSPHERE 2019; 217:887-896. [PMID: 30458424 DOI: 10.1016/j.chemosphere.2018.11.078] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 10/26/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Astragalus tragacantha is a protected plant species in France that grows even in the trace metal and metalloid (TMM) polluted soils of the Calanques National Park (PNCal). Soils are mainly contaminated by lead, copper, zinc and arsenic. An ex situ experiment was conducted, firstly to determine the molecular responses and root traits involved in the TMM tolerance of this plant species by growing individuals in a soil from the surroundings of one of the brownfields of the PNCal, known as l'Escalette, where this plant species grows spontaneously. Secondly, in order to determine the plasticity of these responses, seeds were collected from three different populations, at l'Escalette (polluted site), one from the Frioul archipelago (non-polluted, insular site) and one from La Seyne (non-polluted, littoral site). The results of this study confirmed the capacity of A. tragacantha to germinate and grow in TMM contaminated soils. Only moderate significant variations in chlorophyll and flavonol indices, proline content and antioxidant activities were detected between polluted and control soil conditions for all populations. The main driver for A. tragacantha TMM tolerance seemed to be its ability to be associated with root symbionts i.e. arbuscular mycorrhizal fungi and dark septate endophytes, corresponding to a nutrient-uptake strategy trait. This work provides support for the challenge of A. tragacantha conservation along the littoral of the PNCal, because increasing the number of A. tragacantha individuals would both increase vegetation cover of the polluted soils to reduce the pollution transfer and reinforce the populations of this species.
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Affiliation(s)
- Marie-Dominique Salducci
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Hélène Folzer
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Julien Issartel
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Jacques Rabier
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Véronique Masotti
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Pascale Prudent
- Aix Marseille Univ, CNRS, LCE, Laboratoire de Chimie de l'Environnement, Marseille, France
| | - Laurence Affre
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Laurent Hardion
- Laboratoire Image Ville Environnement (LIVE), Université de Strasbourg, CNRS, Strasbourg, France
| | - Thierry Tatoni
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France
| | - Isabelle Laffont-Schwob
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Marseille, France; Aix Marseille Univ, IRD, LPED, Laboratoire Population Développement Environnement, Marseille, France.
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Dubey S, Shri M, Gupta A, Rani V, Chakrabarty D. Toxicity and detoxification of heavy metals during plant growth and metabolism. ENVIRONMENTAL CHEMISTRY LETTERS 2018; 16:1169-1192. [DOI: 10.1007/s10311-018-0741-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 04/19/2018] [Indexed: 06/27/2023]
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Xu S, Hu C, Hussain S, Tan Q, Wu S, Sun X. Metabolomics analysis reveals potential mechanisms of tolerance to excess molybdenum in soybean seedlings. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 164:589-596. [PMID: 30149358 DOI: 10.1016/j.ecoenv.2018.08.062] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 08/12/2018] [Accepted: 08/17/2018] [Indexed: 05/21/2023]
Abstract
Most plants exhibit strong tolerance to excess molybdenum (Mo). However, the metabolic profile and tolerance mechanisms of plants in response to excess Mo remain unknown. We comprehensively analyzed changes in the metabolic profiles of leaves and roots in soybean (Glycine max L.) seedlings cultured under normal-Mo and excess-Mo conditions by using ultra performance liquid chromatography (UPLC) combined with MS/MS (mass spectrometry). There were 42 differential metabolites in the roots and 19 differential metabolites in the leaves in response to excess Mo stress. In roots, the organic acids, levels of gluconic acid, D-glucarate and citric acid increased by 107.63-, 4.42- and 2.87-folds after excess Mo exposure. Several hormones (salicylic acid, jasmonic acid) and lipids (PG, MG, DG etc) also increased significantly under excess Mo condition. Metabolites related to ascorbate-glutathione metabolism and flavonoid and isoflavone biosynthesis notably accumulated in roots. Only lipid metabolism and salicylic acid accumulation were induced in leaves under excess Mo stress. It is speculated that organic compounds such as 2-oxoarginine, L-nicotine, gluconic acid, D-glucurate, and citric acid played important roles to chelate Mo and reduce its toxicity. Signaling molecules (JA, SA, and some lipids) and non-enzyme antioxidants such as flavonoids/isoflavones act synergistically to detoxify ROS and contribute to Mo tolerance in soybean seedlings. More metabolic pathways were induced by Mo excess in roots than in leaves, suggesting that roots play more implant role in Mo tolerance.
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Affiliation(s)
- Shoujun Xu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China; Micro-Element Research Center, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, Hubei Province, China
| | - Chengxiao Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China; Micro-Element Research Center, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, Hubei Province, China
| | - Saddam Hussain
- Department of Agronomy, University of Agriculture, Faisalābād, Punjab 38000, Pakistan
| | - Qiling Tan
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China; Micro-Element Research Center, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, Hubei Province, China
| | - Songwei Wu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China; Micro-Element Research Center, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, Hubei Province, China
| | - Xuecheng Sun
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China; Micro-Element Research Center, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, Hubei Province, China.
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Li JT, Gurajala HK, Wu LH, van der Ent A, Qiu RL, Baker AJM, Tang YT, Yang XE, Shu WS. Hyperaccumulator Plants from China: A Synthesis of the Current State of Knowledge. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11980-11994. [PMID: 30272967 DOI: 10.1021/acs.est.8b01060] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Hyperaccumulator plants are the material basis for phytoextraction research and for practical applications in decontaminating polluted soils and industrial wastes. China's high biodiversity and substantial mineral resources make it a global hotspot for hyperaccumulator plant species. Intensive screening efforts over the past 20 years by researchers working in China have led to the discovery of many different hyperaccumulators for a range of elements. In this review, we present the state of knowledge on all currently reported hyperaccumulator species from China, including Cardamine hupingshanensis (selenium, Se), Dicranopteris dichotoma (rare earth elements, REEs), Elsholtzia splendens (copper, Cu), Phytolacca americana (manganese, Mn), Pteris vittata (arsenic, As), Sedum alfredii, and Sedum plumbizincicola (cadmium/zinc, Cd/Zn). This review covers aspects of the ecophysiology and molecular biology of tolerance and hyperaccumulation for each element. The major scientific advances resulting from the study of hyperaccumulator plants in China are summarized and synthesized.
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Affiliation(s)
- Jin-Tian Li
- School of Life Sciences , South China Normal University , Guangzhou 510631 , P.R. China
| | - Hanumanth Kumar Gurajala
- College of Environmental & Resources Science , Zhejiang University , Hangzhou 310058 , P.R. China
| | - Long-Hua Wu
- Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , Brisbane , Australia
- Laboratoire Sols et Environnement, UMR , Université de Lorraine - INRA , Nancy 1120 , France
| | - Rong-Liang Qiu
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , P.R. China
| | - Alan J M Baker
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , Brisbane , Australia
- Laboratoire Sols et Environnement, UMR , Université de Lorraine - INRA , Nancy 1120 , France
- School of BioSciences , The University of Melbourne , Victoria 3010 , Australia
| | - Ye-Tao Tang
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , P.R. China
| | - Xiao-E Yang
- College of Environmental & Resources Science , Zhejiang University , Hangzhou 310058 , P.R. China
| | - Wen-Sheng Shu
- School of Life Sciences , South China Normal University , Guangzhou 510631 , P.R. China
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Corso M, Schvartzman MS, Guzzo F, Souard F, Malkowski E, Hanikenne M, Verbruggen N. Contrasting cadmium resistance strategies in two metallicolous populations of Arabidopsis halleri. THE NEW PHYTOLOGIST 2018; 218:283-297. [PMID: 29292826 DOI: 10.1111/nph.14948] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/05/2017] [Indexed: 05/10/2023]
Abstract
While cadmium (Cd) tolerance is a constitutive trait in the Arabidopsis halleri species, Cd accumulation is highly variable. Recent adaptation to anthropogenic metal stress has occurred independently within the genetic units of A. halleri and the evolution of different mechanisms involved in Cd tolerance and accumulation has been suggested. To gain a better understanding of the mechanisms underlying Cd tolerance and accumulation in A. halleri, ionomic inductively coupled plasma mass spectrometry (ICP-MS), transcriptomic (RNA sequencing) and metabolomic (high-performance liquid chromatography-mass spectrometry) profiles were analysed in two A. halleri metallicolous populations from different genetic units (PL22 from Poland and I16 from Italy). The PL22 and I16 populations were both hypertolerant to Cd, but PL22 hyperaccumulated Cd while I16 behaved as an excluder both in situ and when grown hydroponically. The observed hyperaccumulator vs excluder behaviours were paralleled by large differences in the expression profiles of transporter genes. Flavonoid-related transcripts and metabolites were strikingly more abundant in PL22 than in I16 shoots. The role of novel A. halleri candidate genes possibly involved in Cd hyperaccumulation or exclusion was supported by the study of corresponding A. thaliana knockout mutants. Taken together, our results are suggestive of the evolution of divergent strategies for Cd uptake, transport and detoxification in different genetic units of A. halleri.
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Affiliation(s)
- Massimiliano Corso
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - M Sol Schvartzman
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, B-4000, Liège, Belgium
| | - Flavia Guzzo
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
| | - Florence Souard
- Département de Pharmacochimie Moléculaire, CNRS UMR5063, University Grenoble Alpes, 38400, St Martin d'Hères, France
- Laboratoire de Pharmacognosie, de Bromatologie et de Nutrition Humaine, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Eugeniusz Malkowski
- Department of Plant Physiology, Faculty of Biology and Environmental Protection, University of Silesia in Katowice, 40-032, Katowice, Poland
| | - Marc Hanikenne
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, B-4000, Liège, Belgium
| | - Nathalie Verbruggen
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050, Brussels, Belgium
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Adele NC, Ngwenya BT, Heal KV, Mosselmans JFW. Soil Bacteria Override Speciation Effects on Zinc Phytotoxicity in Zinc-Contaminated Soils. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:3412-3421. [PMID: 29466659 DOI: 10.1021/acs.est.7b05094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The effects of zinc (Zn) speciation on plant growth in Zn-contaminated soil in the presence of bacteria are unknown but are critical to our understanding of metal biodynamics in the rhizosphere where bacteria are abundant. A 6-week pot experiment investigated the effects of two plant growth promoting bacteria (PGPB), Rhizobium leguminosarum and Pseudomonas brassicacearum, on Zn accumulation and speciation in Brassica juncea grown in soil amended with 600 mg kg-1 elemental Zn as three Zn species: soluble ZnSO4 and nanoparticles of ZnO and ZnS. Measures of plant growth were higher across all Zn treatments inoculated with PGPB compared to uninoculated controls, but Zn species effects were not significant. Transmission electron microscopy identified dense particles in the epidermis and intracellular spaces in roots, suggesting Zn uptake in both dissolved and particulate forms. X-ray absorption near-edge structure (XANES) analysis of roots revealed differences in Zn speciation between treatments. Uninoculated plants exposed to ZnSO4 contained Zn predominantly in the form of Zn phytate (35%) and Zn polygalacturonate (30%), whereas Zn cysteine (57%) and Zn polygalacturonate (37%) dominated in roots exposed to ZnO nanoparticles. Inoculation with PGPB increased (>50%) the proportion of Zn cysteine under all Zn treatments, suggesting Zn coordination with cysteine as the predominant mechanism of Zn toxicity reduction by PGPB. Using this approach, we show, for the first time, that although speciation is important, the presence of rhizospheric bacteria completely overrides speciation effects such that most of the Zn in plant tissue exists as complexes other than the original form.
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Affiliation(s)
- Nyekachi C Adele
- School of GeoSciences , University of Edinburgh , Edinburgh , U.K
| | - Bryne T Ngwenya
- School of GeoSciences , University of Edinburgh , Edinburgh , U.K
| | - Kate V Heal
- School of GeoSciences , University of Edinburgh , Edinburgh , U.K
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Merlot S, Sanchez Garcia de la Torre V, Hanikenne M. Physiology and Molecular Biology of Trace Element Hyperaccumulation. AGROMINING: FARMING FOR METALS 2018. [DOI: 10.1007/978-3-319-61899-9_6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Kopittke PM, Wang P, Lombi E, Donner E. Synchrotron-based X-Ray Approaches for Examining Toxic Trace Metal(loid)s in Soil-Plant Systems. JOURNAL OF ENVIRONMENTAL QUALITY 2017; 46:1175-1189. [PMID: 29293828 DOI: 10.2134/jeq2016.09.0361] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Elevated levels of trace metal(loid)s reduce plant growth, both in soils contaminated by industrial activities and in acid agricultural soils. Although the adverse effects of trace metal(loid)s have long been recognized, there remains much unknown both about their behavior in soils, their toxicity to plants, and the mechanisms that plants use to tolerate elevated concentrations. Synchrotron-based approaches are being utilized increasingly in soil-plant systems to examine toxic metal(loid)s. In the present review, brief consideration is given to the theory of synchrotron radiation. Thereafter, we review the use of synchrotron-based approaches for the examination of various trace metal(loid)s in soil-plant systems, including aluminum, chromium, manganese, cobalt, nickel, copper, zinc, arsenic, selenium, and cadmium. Within the context of this review, X-ray absorption spectroscopy (XAS) and X-ray fluorescence microscopy (μ-XRF) are of particular interest. These techniques can provide in situ analyses of the distribution and speciation of metal(loid)s in soil-plant systems. The information presented here serves not only to understand the behavior of trace metals in soil-plant systems, but also to provide examples of the potential applications of synchrotron radiation that can be used to advantage in other studies.
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Legros S, Levard C, Marcato-Romain CE, Guiresse M, Doelsch E. Anaerobic Digestion Alters Copper and Zinc Speciation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10326-10334. [PMID: 28825795 DOI: 10.1021/acs.est.7b01662] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Anaerobic digestion is a widely used organic waste treatment process. However, little is known on how it could alter the speciation of contaminants in organic waste. This study was focused on determining the influence of anaerobic digestion on the speciation of copper and zinc, two metals that generally occur at high concentration in organic waste. Copper and zinc speciation was investigated by X-ray absorption spectroscopy in four different raw organic wastes (predigestion) and their digested counterparts (postdigestion, i.e., digestates). The results highlighted an increase in the digestates of the proportion of amorphous or nanostructured copper sulfides as well as amorphous or nanostructured zinc sulfides and zinc phosphate as compared to raw waste. We therefore suggest that the environmental fate of these elements would be different when spreading either digestates or raw waste on cropland.
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Affiliation(s)
- Samuel Legros
- CIRAD , UPR Recyclage et risque, 18524 Dakar, Senegal
- CIRAD , UPR Recyclage et risque, F-34398 Montpellier, France
| | - Clément Levard
- Aix Marseille Université, CNRS, IRD, College De France , CEREGE, Aix en Provence, France
| | | | - Maritxu Guiresse
- EcoLab, INPT, UPS, Université de Toulouse , UMR CNRS 5245, F-31326 Castanet Tolosan, France
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45
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López-Moreno ML, de la Rosa G, Cruz-Jiménez G, Castellano L, Peralta-Videa JR, Gardea-Torresdey JL. Effect of ZnO nanoparticles on corn seedlings at different temperatures; X-ray absorption spectroscopy and ICP/OES studies. Microchem J 2017. [DOI: 10.1016/j.microc.2017.05.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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46
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Fasani E, DalCorso G, Varotto C, Li M, Visioli G, Mattarozzi M, Furini A. The MTP1 promoters from Arabidopsis halleri reveal cis-regulating elements for the evolution of metal tolerance. THE NEW PHYTOLOGIST 2017; 214:1614-1630. [PMID: 28332702 DOI: 10.1111/nph.14529] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 02/14/2017] [Indexed: 05/08/2023]
Abstract
In the hyperaccumulator Arabidopsis halleri, the zinc (Zn) vacuolar transporter MTP1 is a key component of hypertolerance. Because protein sequences and functions are highly conserved between A. halleri and Arabidopsis thaliana, Zn tolerance in A. halleri may reflect the constitutively higher MTP1 expression compared with A. thaliana, based on copy number expansion and different cis regulation. Three MTP1 promoters were characterized in A. halleri ecotype I16. The comparison with the A. thaliana MTP1 promoter revealed different expression profiles correlated with specific cis-acting regulatory elements. The MTP1 5' untranslated region, highly conserved among A. thaliana, Arabidopsis lyrata and A. halleri, contains a dimer of MYB-binding motifs in the A. halleri promoters absent in the A. thaliana and A. lyrata sequences. Site-directed mutagenesis of these motifs revealed their role for expression in trichomes. A. thaliana mtp1 transgenic lines expressing AtMTP1 controlled by the native A. halleri promoter were more Zn-tolerant than lines carrying mutations on MYB-binding motifs. Differences in Zn tolerance were associated with different distribution of Zn among plant organs and in trichomes. The different cis-acting elements in the MTP1 promoters of A. halleri, particularly the MYB-binding sites, are probably involved in the evolution of Zn tolerance.
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Affiliation(s)
- Elisa Fasani
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Giovanni DalCorso
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona, 37134, Italy
| | - Claudio Varotto
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, San Michele all'Adige (TN), 38010, Italy
| | - Mingai Li
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, San Michele all'Adige (TN), 38010, Italy
| | - Giovanna Visioli
- Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze, 11/A, Parma, 43124, Italy
| | - Monica Mattarozzi
- Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze, 11/A, Parma, 43124, Italy
| | - Antonella Furini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona, 37134, Italy
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Wang Y, Mei S, Wang Z, Jiang Z, Zhu Z, Ding J, Wu D, Shu X. Metabolite Profiling of a Zinc-Accumulating Rice Mutant. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3775-3782. [PMID: 28441480 DOI: 10.1021/acs.jafc.7b00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Breeding crops with high zinc (Zn) density is an effective way to alleviate human dietary Zn deficiencies. We characterized a mutant Lilizhi (LLZ) accumulating at least 35% higher Zn concentration in grain than the wild type (WT) in hydroponic experiments. The mutant stored less Zn content in the root and transported more Zn to the grain. Metabolite profiling demonstrated that, with high Zn treatment, the contents of proline, asparagine, citric acid, and malic acid were enhanced in both LLZ and the WT, which were thought to be involved in Zn transport in rice. Furthermore, the contents of cysteine, allothreonine, alanine, tyrosine, homoserine, β-alanine, and nicotianamine required for the production of many metal-binding proteins were specifically increased in LLZ. LLZ had higher capability of amino acid biosynthesis and metal cation transportation. The current research extends our understanding on the physiological mechanisms of Zn uploading into grain and provides references for further Zn biofortification breeding in rice.
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Affiliation(s)
- Yin Wang
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Sha Mei
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Zhixue Wang
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Zhoulei Jiang
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Zhangshicang Zhu
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Jingwen Ding
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Dianxing Wu
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
| | - Xiaoli Shu
- State Key Laboratory of Rice Biology and Key Laboratory of the Ministry of Agriculture for the Nuclear Agricultural Sciences, Department of Applied Biosciences, Institute of Nuclear Agricultural Sciences, Zhejiang University , Hangzhou, Zhejiang 310029, People's Republic of China
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Li X, Gitau MM, Han S, Fu J, Xie Y. Effects of cadmium-resistant fungi Aspergillus aculeatus on metabolic profiles of bermudagrass [Cynodondactylon (L.)Pers.] under Cd stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 114:38-50. [PMID: 28273510 DOI: 10.1016/j.plaphy.2017.02.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 05/08/2023]
Abstract
Plants' tolerance to heavy metal stress may be induced by the exploitation of microbes. The objectives of this study were to investigate the effect of cadmium (Cd)-resistant fungus, Aspergillus aculeatus, on tolerance to Cd and alteration of metabolites in bermudagrass under Cd stress, and identify the predominant metabolites associated with Cd tolerance. Two genotypes of bermudagrass with contrasting Cd tolerance (Cd-sensitive 'WB92' and Cd-tolerant 'WB242') were exposed to 0, 50, 150 and 250 mg kg-1 Cd for 21 days. Physiological responses of bermudagrass to Cd stress were evaluated based on the relative growth rate (RGR) and normalized relative transpiration rate (NRT). Plants inoculated with A. aculeatus exhibited higher RGR and NRT under Cd stress than those of non-inoculated plants, regardless of genotypes. A total of 32 Cd-responsive metabolites in leaves and 21 in roots were identified in the two genotypes, including organic acids, amino acids, sugars, and fatty acids and others. Interestingly, under Cd stress, the leaves of inoculated 'WB92' accumulated less citric acid, aspartic acid, glutamic acid, sucrose, galactose, but more sorbose and glucose, while inoculated 'WB242' leaves had less citric acid, malic acid, sucrose, sorbose, but more fructose and glucose, compared to non-inoculated plants. In 'WB92' roots, the A. aculeatus reduced mannose content, but increased trehalose and citric acid content, while in 'WB242', it decreased sucrose, but enhanced citric acid content, compared to Cd regime. The results of this study suggest that A. aculeatus may induce accumulation of different metabolites associated with Cd tolerance in bermudagrass.
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Affiliation(s)
- Xiaoning Li
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Science, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing, China
| | - Margaret Mukami Gitau
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Science, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing, China
| | - Shijuan Han
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Science, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing, China
| | - Jinmin Fu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Science, Wuhan 430074, China.
| | - Yan Xie
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Science, Wuhan 430074, China.
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Formentini TA, Legros S, Fernandes CVS, Pinheiro A, Le Bars M, Levard C, Mallmann FJK, da Veiga M, Doelsch E. Radical change of Zn speciation in pig slurry amended soil: Key role of nano-sized sulfide particles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 222:495-503. [PMID: 28063709 DOI: 10.1016/j.envpol.2016.11.056] [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: 09/28/2016] [Revised: 11/09/2016] [Accepted: 11/21/2016] [Indexed: 06/06/2023]
Abstract
Spreading livestock manure as fertilizer on farmlands is a widespread practice. It represents the major source of heavy metal(loid)s (HM) input in agricultural soils. Since zinc (Zn) is present at high concentrations in manure, it poses special environmental concerns related to phytotoxicity, groundwater contamination, and introduction in the food chain. Therefore, investigations on the fate and behavior of manure-borne Zn, when it enters the soil environment, are necessary to predict the environmental effects. Nevertheless, long-term field studies assessing Zn speciation in the organic waste matrix, as well as within the soil after manure application, are lacking. This study was designed to fill this gap. Using SEM-EDS and XAS analysis, we reported the following new results: (i) ZnS made up 100% of the Zn speciation in the pig slurry (the highest proportion of ZnS ever observed in organic waste); and (ii) ZnS aggregates were about 1-μm diameter (the smallest particle size ever reported in pig slurry). Moreover, the pig slurry containing ZnS was spread on the soil over an 11-year period, totaling 22 applications, and the resulting Zn speciation within the amended soil was analyzed. Surprisingly, ZnS, i.e. the only species responsible for a nearly 2-fold increase in the Zn concentration within the amended soil, was not detected in this soil. Based on SEM-EDS and XAS observations, we put forward the hypothesis that Zn in the pig slurry consisted of nano-sized ZnS crystallites that further aggregated. The low stability of ZnS nanoparticles within oxic and complex environments such as the studied soil was the key explanation for the radical change in pig slurry-borne Zn speciation after long-term amendments.
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Affiliation(s)
- Thiago Augusto Formentini
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria (UFSM), 97105-900 Santa Maria, RS, Brazil; Department of Hydraulics and Sanitation, Federal University of Parana (UFPR), 81531-980 Curitiba, PR, Brazil.
| | - Samuel Legros
- CIRAD, UPR Recyclage et risque, 18524 Dakar, Senegal; CIRAD, UPR Recyclage et risque, F-34398, Montpellier, France
| | | | - Adilson Pinheiro
- Environmental Engineering Program, Regional University of Blumenau (FURB), 89030-000 Blumenau, SC, Brazil
| | - Maureen Le Bars
- Aix Marseille Univ, CNRS, IRD, Coll France, CEREGE, Aix-en-Provence, France
| | - Clément Levard
- Aix Marseille Univ, CNRS, IRD, Coll France, CEREGE, Aix-en-Provence, France
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50
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Suryawanshi V, Talke IN, Weber M, Eils R, Brors B, Clemens S, Krämer U. Between-species differences in gene copy number are enriched among functions critical for adaptive evolution in Arabidopsis halleri. BMC Genomics 2016; 17:1034. [PMID: 28155655 PMCID: PMC5259951 DOI: 10.1186/s12864-016-3319-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Gene copy number divergence between species is a form of genetic polymorphism that contributes significantly to both genome size and phenotypic variation. In plants, copy number expansions of single genes were implicated in cultivar- or species-specific tolerance of high levels of soil boron, aluminium or calamine-type heavy metals, respectively. Arabidopsis halleri is a zinc- and cadmium-hyperaccumulating extremophile species capable of growing on heavy-metal contaminated, toxic soils. In contrast, its non-accumulating sister species A. lyrata and the closely related reference model species A. thaliana exhibit merely basal metal tolerance. Results For a genome-wide assessment of the role of copy number divergence (CND) in lineage-specific environmental adaptation, we conducted cross-species array comparative genome hybridizations of three plant species and developed a global signal scaling procedure to adjust for sequence divergence. In A. halleri, transition metal homeostasis functions are enriched twofold among the genes detected as copy number expanded. Moreover, biotic stress functions including mostly disease Resistance (R) gene-related genes are enriched twofold among genes detected as copy number reduced, when compared to the abundance of these functions among all genes. Conclusions Our results provide genome-wide support for a link between evolutionary adaptation and CND in A. halleri as shown previously for Heavy metal ATPase4. Moreover our results support the hypothesis that elemental defences, which result from the hyperaccumulation of toxic metals, allow the reduction of classical defences against biotic stress as a trade-off. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3319-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Vasantika Suryawanshi
- Department of Plant Physiology, Ruhr University Bochum, Universitätsstrasse 150, Bochum, 44801, Germany.,BioQuant, University of Heidelberg, Im Neuenheimer Feld 267, Heidelberg, 69120, Germany
| | - Ina N Talke
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam, 14476, Germany
| | - Michael Weber
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, Bayreuth, 95447, Germany
| | - Roland Eils
- Division of Theoretical Bioinformatics, DKFZ, Im Neuenheimer Feld 280, Heidelberg, 69121, Germany.,BioQuant, University of Heidelberg, Im Neuenheimer Feld 267, Heidelberg, 69120, Germany.,Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Im Neuenheimer Feld 364, Heidelberg, 69120, Germany
| | - Benedikt Brors
- Division of Theoretical Bioinformatics, DKFZ, Im Neuenheimer Feld 280, Heidelberg, 69121, Germany
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, Bayreuth, 95447, Germany
| | - Ute Krämer
- Department of Plant Physiology, Ruhr University Bochum, Universitätsstrasse 150, Bochum, 44801, Germany. .,BioQuant, University of Heidelberg, Im Neuenheimer Feld 267, Heidelberg, 69120, Germany.
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