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Sommer K, Becker T, von Bremen-Kühne M, Gotters M, Quarles CD, Sperling M, Kudla J, Karst U. Analysis of the elemental species-dependent uptake of lanthanide complexes in Arabidopsis thaliana plants by LA-ICP-MS. CHEMOSPHERE 2023; 338:139534. [PMID: 37467858 DOI: 10.1016/j.chemosphere.2023.139534] [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: 03/27/2023] [Revised: 07/02/2023] [Accepted: 07/15/2023] [Indexed: 07/21/2023]
Abstract
Gadolinium-based contrast agents (GBCAs) are found increasingly in different water bodies, making the investigation of their uptake and distribution behavior in plants a matter of high interest to assess their potential effects on the environment. Depending on the used complexing agent, they are classified into linear or macrocyclic GBCAs, with macrocyclic complexes being more stable. In this study, by using TbCl3, Gd-DTPA-BMA, and Eu-DOTA as model compounds for ionic, linear, and macrocyclic lanthanide species, the elemental species-dependent uptake into leaves of Arabidopsis thaliana under identical biological conditions was studied. After growing for 14 days on medium containing the lanthanide species, the uptake of all studied compounds was confirmed by means of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Furthermore, the uptake rate of TbCl3 and the linear Gd-DTPA-BMA was similar, with Tb and Gd hotspots colocated in the areas of hydathodes and the trichomes of the leaves. In contrast, in the case of the macrocyclic Eu-DOTA, Eu was mainly located in the leaf veins. Additionally, Eu was colocated with Tb and Gd in the hydathode at the tip of the leave. Removal of the lanthanide species from the medium led to a decrease in signal intensities, indicating their subsequent release to some extent. However, seven days after the removal, depositions of Eu, Gd, and Tb were still present in the same areas of the leaves as before, showing that complete elimination was not achieved after this period of time. Overall, more Eu was present in the leaves compared to Gd and Tb, which can be explained by the high stability of the Eu-DOTA complex, potentially leading to a higher transport rate into the leaves, whereas TbCl3 and Gd-DTPA-BMA could interact with the roots, reducing their mobility.
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Affiliation(s)
- Karolin Sommer
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany
| | - Tobias Becker
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 7, 48149, Münster, Germany
| | - Maximilian von Bremen-Kühne
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany
| | - Mario Gotters
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany
| | - C Derrick Quarles
- Elemental Scientific, Inc., 7277 World Communications Dr., Omaha, NE, 68022, USA
| | - Michael Sperling
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany; European Virtual Institute for Speciation Analysis, Corrensstr. 48, 48149, Münster, Germany
| | - Jörg Kudla
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 7, 48149, Münster, Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany.
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2
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Nguyen NN, Lamotte O, Alsulaiman M, Ruffel S, Krouk G, Berger N, Demolombe V, Nespoulous C, Dang TMN, Aimé S, Berthomieu P, Dubos C, Wendehenne D, Vile D, Gosti F. Reduction in PLANT DEFENSIN 1 expression in Arabidopsis thaliana results in increased resistance to pathogens and zinc toxicity. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5374-5393. [PMID: 37326591 DOI: 10.1093/jxb/erad228] [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: 07/11/2022] [Accepted: 06/14/2023] [Indexed: 06/17/2023]
Abstract
Ectopic expression of defensins in plants correlates with their increased capacity to withstand abiotic and biotic stresses. This applies to Arabidopsis thaliana, where some of the seven members of the PLANT DEFENSIN 1 family (AtPDF1) are recognised to improve plant responses to necrotrophic pathogens and increase seedling tolerance to excess zinc (Zn). However, few studies have explored the effects of decreased endogenous defensin expression on these stress responses. Here, we carried out an extensive physiological and biochemical comparative characterization of (i) novel artificial microRNA (amiRNA) lines silenced for the five most similar AtPDF1s, and (ii) a double null mutant for the two most distant AtPDF1s. Silencing of five AtPDF1 genes was specifically associated with increased aboveground dry mass production in mature plants under excess Zn conditions, and with increased plant tolerance to different pathogens - a fungus, an oomycete and a bacterium, while the double mutant behaved similarly to the wild type. These unexpected results challenge the current paradigm describing the role of PDFs in plant stress responses. Additional roles of endogenous plant defensins are discussed, opening new perspectives for their functions.
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Affiliation(s)
- Ngoc Nga Nguyen
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Olivier Lamotte
- Agroécologie, CNRS, INRAE, Institut Agro, Université de Bourgogne, Université Bourgogne-Franche Comté, F-21 000 Dijon, France
| | - Mohanad Alsulaiman
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Sandrine Ruffel
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Gabriel Krouk
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Nathalie Berger
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Vincent Demolombe
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Claude Nespoulous
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Thi Minh Nguyet Dang
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Sébastien Aimé
- Agroécologie, CNRS, INRAE, Institut Agro, Université de Bourgogne, Université Bourgogne-Franche Comté, F-21 000 Dijon, France
| | - Pierre Berthomieu
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Christian Dubos
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - David Wendehenne
- Agroécologie, CNRS, INRAE, Institut Agro, Université de Bourgogne, Université Bourgogne-Franche Comté, F-21 000 Dijon, France
| | - Denis Vile
- LEPSE, INRAE, Institut Agro, Université de Montpellier, 2 Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Françoise Gosti
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
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3
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Kolesnikova UK, Scott AD, Van de Velde JD, Burns R, Tikhomirov NP, Pfordt U, Clarke AC, Yant L, Seregin AP, Vekemans X, Laurent S, Novikova PY. Transition to Self-compatibility Associated With Dominant S-allele in a Diploid Siberian Progenitor of Allotetraploid Arabidopsis kamchatica Revealed by Arabidopsis lyrata Genomes. Mol Biol Evol 2023; 40:msad122. [PMID: 37432770 PMCID: PMC10335350 DOI: 10.1093/molbev/msad122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023] Open
Abstract
A transition to selfing can be beneficial when mating partners are scarce, for example, due to ploidy changes or at species range edges. Here, we explain how self-compatibility evolved in diploid Siberian Arabidopsis lyrata, and how it contributed to the establishment of allotetraploid Arabidopsis kamchatica. First, we provide chromosome-level genome assemblies for two self-fertilizing diploid A. lyrata accessions, one from North America and one from Siberia, including a fully assembled S-locus for the latter. We then propose a sequence of events leading to the loss of self-incompatibility in Siberian A. lyrata, date this independent transition to ∼90 Kya, and infer evolutionary relationships between Siberian and North American A. lyrata, showing an independent transition to selfing in Siberia. Finally, we provide evidence that this selfing Siberian A. lyrata lineage contributed to the formation of the allotetraploid A. kamchatica and propose that the selfing of the latter is mediated by the loss-of-function mutation in a dominant S-allele inherited from A. lyrata.
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Affiliation(s)
- Uliana K Kolesnikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Alison Dawn Scott
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Jozefien D Van de Velde
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Robin Burns
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
| | - Nikita P Tikhomirov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
- Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Russia
| | - Ursula Pfordt
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Andrew C Clarke
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, Sutton Bonington, United Kingdom
| | - Levi Yant
- Future Food Beacon of Excellence and School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Alexey P Seregin
- Herbarium (MW), Faculty of Biology, M. V. Lomonosov Moscow State University, Moscow, Russia
| | - Xavier Vekemans
- University Lille, CNRS, UMR 8198—Evo-Eco-Paleo, Lille, France
| | - Stefan Laurent
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Polina Yu Novikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
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4
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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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5
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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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6
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Novikova PY, Kolesnikova UK, Scott AD. Ancestral self-compatibility facilitates the establishment of allopolyploids in Brassicaceae. PLANT REPRODUCTION 2023; 36:125-138. [PMID: 36282331 PMCID: PMC9957919 DOI: 10.1007/s00497-022-00451-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/20/2022] [Indexed: 05/15/2023]
Abstract
Self-incompatibility systems based on self-recognition evolved in hermaphroditic plants to maintain genetic variation of offspring and mitigate inbreeding depression. Despite these benefits in diploid plants, for polyploids who often face a scarcity of mating partners, self-incompatibility can thwart reproduction. In contrast, self-compatibility provides an immediate advantage: a route to reproductive viability. Thus, diploid selfing lineages may facilitate the formation of new allopolyploid species. Here, we describe the mechanism of establishment of at least four allopolyploid species in Brassicaceae (Arabidopsis suecica, Arabidopsis kamchatica, Capsella bursa-pastoris, and Brassica napus), in a manner dependent on the prior loss of the self-incompatibility mechanism in one of the ancestors. In each case, the degraded S-locus from one parental lineage was dominant over the functional S-locus of the outcrossing parental lineage. Such dominant loss-of-function mutations promote an immediate transition to selfing in allopolyploids and may facilitate their establishment.
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Affiliation(s)
- Polina Yu Novikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany.
| | - Uliana K Kolesnikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
| | - Alison Dawn Scott
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
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7
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Li C, Mo Y, Wang N, Xing L, Qu Y, Chen Y, Yuan Z, Ali A, Qi J, Fernández V, Wang Y, Kopittke PM. The overlooked functions of trichomes: Water absorption and metal detoxication. PLANT, CELL & ENVIRONMENT 2023; 46:669-687. [PMID: 36581782 DOI: 10.1111/pce.14530] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 12/20/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Trichomes are epidermal outgrowths on plant shoots. Their roles in protecting plants against herbivores and in the biosynthesis of specialized metabolites have long been recognized. Recently, studies are increasingly showing that trichomes also play important roles in water absorption and metal detoxication, with these roles having important implications for ecology, the environment, and agriculture. However, these two functions of trichomes have been largely overlooked and much remains unknown. In this review, we show that the trichomes of 37 plant species belonging to 14 plant families are involved in water absorption, while the trichomes of 33 species from 13 families are capable of sequestering metals within their trichomes. The ability of trichomes to absorb water results from their decreased hydrophobicity compared to the remainder of the leaf surface as well as the presence of special structures for collecting and absorbing water. In contrast, the metal detoxication function of trichomes results not only from the good connection of their basal cells to the underlying vascular tissues, but also from the presence of metal-chelating ligands and transporters within the trichomes themselves. Knowledge gaps and critical future research questions regarding these two trichome functions are highlighted. This review improves our understanding on trichomes.
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Affiliation(s)
- Cui Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Yingying Mo
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Nina Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Longyi Xing
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Yang Qu
- Baoji Academy of Agriculture Sciences, Baoji, China
| | - Yanlong Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Zuoqiang Yuan
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Arshad Ali
- College of Life Sciences, Hebei University, Hebei, China
| | - Jiyan Qi
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Victoria Fernández
- School of Forest Engineering, Technical University of Madrid, Madrid, Spain
| | - Yuheng Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Queensland, Australia
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8
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Ribeiro Santos-Rasera J, Giovanini de Lima R, Santos Alves D, Teresa Rosim Monteiro R, Wallace Pereira de Carvalho H. X-ray spectrometry imaging and chemical speciation assisting to understand the toxic effects of copper oxide nanoparticles on zebrafish ( Danio rerio). Nanotoxicology 2022; 16:645-657. [PMID: 36260497 DOI: 10.1080/17435390.2022.2133646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Currently, copper nanoparticles are used in various sectors of industry, agriculture, and medicine. To understand the effects induced by these nanoparticles, it is necessary to assess the environmental risk and safely expand their use. In this study, we evaluated the toxicity of copper oxide (nCuO) nanoparticles in Danio rerio adults, their distribution/concentration, and chemical form after exposure. This last assessment had never been performed on copper-exposed zebrafish. Such evaluation was done through the characterization of nCuO, acute exposure tests and analysis of distribution and concentration by microstructure X-ray fluorescence spectroscopy (µ-XRF) and atomic absorption spectroscopy (GF-AAS). Synchrotron X-ray absorption spectroscopy (XAS) was performed to find out the chemical form of copper in hotspots. The results show that the toxicity values of fish exposed to nCuO were 2.4 mg L-1 (25 nm), 12.36 mg L-1 (40 nm), 149.03 mg L-1 (80 nm) and 0.62 mg L-1 (CuSO4, used as a positive control). The total copper found in the fish was in the order of mg kg-1 and it was not directly proportional to the exposure concentration; most of the copper was concentrated in the gastric system. However, despite the existence of copper hotspots, chemical transformation of CuO into other compounds was not detected.
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Affiliation(s)
- Joyce Ribeiro Santos-Rasera
- Laboratory of Nuclear Instrumentation (LIN), Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, Brazil
| | - Rafael Giovanini de Lima
- Laboratory of Nuclear Instrumentation (LIN), Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, Brazil
| | - Dejane Santos Alves
- Universidade Tecnológica Federal do Paraná, Campus Santa Helena, Prolongamento da Rua São Luis S/N, Santa Helena, Brazil
| | - Regina Teresa Rosim Monteiro
- Laboratory of Ecotoxicology, Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, Brazil
| | - Hudson Wallace Pereira de Carvalho
- Laboratory of Nuclear Instrumentation (LIN), Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, Brazil
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9
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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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10
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Gao W, Guo C, Hu J, Dong J, Zhou LH. Mature trichome is the earliest sequestration site of Cd ions in Arabidopsis thaliana leaves. Heliyon 2021; 7:e07501. [PMID: 34307941 PMCID: PMC8287149 DOI: 10.1016/j.heliyon.2021.e07501] [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: 08/28/2020] [Revised: 04/21/2021] [Accepted: 07/03/2021] [Indexed: 11/27/2022] Open
Abstract
Sequestration of heavy metals by plants in non-glandular leaf trichomes is important for survival in toxic soils and has the potential for environmental remediation. Although heavy metals are particularly toxic to many plants during development, the integration of sequestration into the developmental timecourse is unknown. We tested the hypothesis that plants preferentially sequester heavy metals into mature trichomes by investigating the timecourse of Cd2+ ions into the leaves of the model plant Arabidopsis thaliana. Results supported the hypothesis and surprisingly showed no Cd2+ ions accumulated in earlier trichome development stages and that sequestration and release by mature trichomes were periodic and dynamic. Studies in mutants suggested that these dynamics were governed by the trichome's secondary cell wall, which matures late in development. Results suggest a developmentally timed pathway for excluding heavy metal toxins and the existence of mechanisms for controlled release that may relate to proposed functions of mature trichomes in plants.
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Affiliation(s)
- Wenqiang Gao
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, 071001, Baoding, China
- Mycotoxin and Molecular Plant Pathology Laboratory, Hebei Agricultural University, 071001, Baoding, China
| | - Chao Guo
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, 071001, Baoding, China
- Mycotoxin and Molecular Plant Pathology Laboratory, Hebei Agricultural University, 071001, Baoding, China
| | - Jingjing Hu
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, 071001, Baoding, China
- Mycotoxin and Molecular Plant Pathology Laboratory, Hebei Agricultural University, 071001, Baoding, China
| | - Jingao Dong
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, 071001, Baoding, China
- Mycotoxin and Molecular Plant Pathology Laboratory, Hebei Agricultural University, 071001, Baoding, China
| | - Li Hong Zhou
- Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, 071001, Baoding, China
- Mycotoxin and Molecular Plant Pathology Laboratory, Hebei Agricultural University, 071001, Baoding, China
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11
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Abstract
This review highlights the most recent updated information available about Zn phytotoxicity at physiological, biochemical and molecular levels, uptake mechanisms as well as excess Zn homeostasis in plants. Zinc (Zn) is a natural component of soil in terrestrial environments and is a vital element for plant growth, as it performs imperative functions in numerous metabolic pathways. However, potentially noxious levels of Zn in soils can result in various alterations in plants like reduced growth, photosynthetic and respiratory rate, imbalanced mineral nutrition and enhanced generation of reactive oxygen species. Zn enters into soils through various sources, such as weathering of rocks, forest fires, volcanoes, mining and smelting activities, manure, sewage sludge and phosphatic fertilizers. The rising alarm in environmental facet, as well as, the narrow gap between Zn essentiality and toxicity in plants has drawn the attention of the scientific community to its effects on plants and crucial role in agricultural sustainability. Hence, this review focuses on the most recent updates about various physiological and biochemical functions perturbed by high levels of Zn, its mechanisms of uptake and transport as well as molecular aspects of surplus Zn homeostasis in plants. Moreover, this review attempts to understand the mechanisms of Zn toxicity in plants and to present novel perspectives intended to drive future investigations on the topic. The findings will further throw light on various mechanisms adopted by plants to cope with Zn stress which will be of great significance to breeders for enhancing tolerance to Zn contamination.
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Affiliation(s)
- Harmanjit Kaur
- Department of Botany, Akal University, Bathinda, 151302, Punjab, India
| | - Neera Garg
- Department of Botany, Panjab University, Chandigarh, 160014, India.
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12
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do Nascimento CWA, Hesterberg D, Tappero R. Imaging Zn and Ni distributions in leaves of different ages of the hyperaccumulator Noccaea caerulescens by synchrotron-based X-ray fluorescence. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124813. [PMID: 33385722 DOI: 10.1016/j.jhazmat.2020.124813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Mapping of leaves of hyperaccumulators can provide insights into the mechanisms these species utilize to accumulate high metal concentrations. We used synchrotron-based X-ray fluorescence (SXRF) to perform Zn and Ni imaging in leaves of different ages of Noccaea caerulescens. A mature leaf of the related non-hyperaccumulator Thlaspi arvense was also imaged. The concentrations of Zn, Ni, Co, and Cr in N. caerulescens grown on an ultramafic soil were 9-, 10-, 12-, and 3-fold higher than T. arvense. N. caerulescens showed an exceptional ability to accumulate Zn from the soil, posing a bioconcentration factor of 6.7. T. arvense had Zn and Ni distributed uniformly in the leaf blade with doubling fluorescence counts in the tip and margins, suggesting a strategy to excrete metals and avoid toxicity. On the other hand, N. caerulescens displayed distinctly different Zn and Ni accumulation patterns, regardless of the age or metal concentration in the leaves. Zinc was mainly distributed in the cells surrounding the central and secondary veins. Nickel accumulated in the margins and tips of the leaf blade. Given the time required to image large leaves in synchrotron facilities, small leaves can be used to represent the leaf distribution of Zn and Ni in N. caerulescens.
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Affiliation(s)
| | - Dean Hesterberg
- North Carolina State University, Crop and Soil Sciences Department, Raleigh, NC 27695, USA
| | - Ryan Tappero
- Brookhaven National Laboratory, NSLS-II, Upton, NY 11973, USA
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13
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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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14
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Pteris vittata Arsenic Accumulation Only Partially Explains Soil Arsenic Depletion during Field-Scale Phytoextraction. SOIL SYSTEMS 2020. [DOI: 10.3390/soilsystems4040071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Soil arsenic heterogeneity complicates our understanding of phytoextraction rates during arsenic phytoextraction with Pteris vittata, including in response to rate stimulation with nutrient treatments. In a 58-week arsenic phytoextraction field study, we determined the effects of soil arsenic concentrations, fertilizer application, and mycorrhizal fungi inoculation on P. vittata arsenic uptake rates, soil arsenic depletion, and arsenic soil–plant mass balances. Initial soil arsenic concentrations were positively correlated with arsenic uptake rates. Soil inoculation with mycorrhizal fungus Funneliformis mosseae led to 1.5–2 times higher fern aboveground biomass. Across all treatments, ferns accumulated a mean of 3.6% of the initial soil arsenic, and mean soil arsenic concentrations decreased by up to 44%. At depths of 0–10 cm, arsenic accumulation in P. vittata matched soil arsenic depletion. However, at depths of 0–20 cm, fern arsenic accumulation could not account for 61.5% of the soil arsenic depletion, suggesting that the missing arsenic could have been lost to leaching. A higher fraction of arsenic (III) (12.8–71.5%) in the rhizosphere compared to bulk soils suggests that the rhizosphere is a distinct geochemical environment featuring processes that could solubilize arsenic. To our knowledge, this is the first mass balance relating arsenic accumulation in P. vittata to significant decreases in soil arsenic concentrations under field conditions.
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15
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Nascimento CWAD, Hesterberg D, Tappero R. Effects of exogenous citric acid on the concentration and spatial distribution of Ni, Zn, Co, Cr, Mn and Fe in leaves of Noccaea caerulescens grown on a serpentine soil. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122992. [PMID: 32512459 DOI: 10.1016/j.jhazmat.2020.122992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 04/22/2020] [Accepted: 05/16/2020] [Indexed: 05/27/2023]
Abstract
The aim of this study was to show the potential of citric acid in increasing the concentration of Ni, Zn, Co, Cr, Mn and Fe in leaves of the hyperaccumulator Noccaea caerulescens. Synchrotron x-ray fluorescence (μ-XRF) images were collected to assess the distribution of metals in leaves. Applying citric acid (20 mmol kg-1) to soil increased in 14-, 10-, 7-, 2- and 1.4- fold the concentration of Mn, Fe, Co, Ni, and Cr, respectively, compared to the control. The μ-XRF imaging revealed that Ni and Zn were not spatially correlated across the leaf. We observed a clear partitioning of Zn between veins and surrounding leaf cells while Ni was more evenly distributed between veins and leaf blade. The accumulation of metals in citric acid treated plants did not change the Ni and Zn distribution pattern in leaves but altered the Mn distribution. It seems that Mn reached toxic concentrations in leaves and we hypothesize that a mechanism driven by transpiration through the xylem was used to excrete the metal. Our results show that citric acid can enhance metal accumulation by N. caerulescens and have impact for soil remediation by either decreasing the time for clean up or increasing the access to non-labile pools of metals in soil.
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Affiliation(s)
| | - Dean Hesterberg
- North Carolina State University, Crop and Soil Sciences Department, Raleigh, NC, 27695, USA
| | - Ryan Tappero
- Brookhaven National Laboratory, NSLS-II, Upton, NY, 11973, USA
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16
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Morina F, Küpper H. Direct inhibition of photosynthesis by Cd dominates over inhibition caused by micronutrient deficiency in the Cd/Zn hyperaccumulator Arabidopsis halleri. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 155:252-261. [PMID: 32781275 DOI: 10.1016/j.plaphy.2020.07.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 06/20/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
This work reveals, by imaging in vivo measurements in the Cd/Zn hyperaccumulator Arabidopsis halleri, in how far Cd stress affects macronutrient (Ca, K) and micronutrient (Fe, Zn) distribution in the leaves. We directly correlate these changes with biophysics of the photosynthetic light reactions. Plants were grown for 2 months at 10 μM Zn (=control), and supplemented with 10, 15, 50 or 75 μM Cd. Direct imaging of OJIP transients revealed that bundle sheath cells were more sensitive to Cd toxicity than mesophyll cells further from the vein. Progressive inhibition of photosystem (PS) II reaction centres and decrease in quantum yield of electron transport between QA and QB and further to PSI acceptors was observed. This was correlated with the decreased dynamics of QA re-oxidation and lower operating efficiency of PSII. Analysis by a benchtop micro X-ray fluorescence device showed that Cd mostly accumulated in the veins, and restricted Fe and Zn distribution from the veins, especially in the 75 μM Cd, while K concentration increased in the whole leaf. Calcium distribution was apparently not affected by Cd, but Cd excess inhibited trichome formation and thereby diminished total Ca concentration in the leaves. The results point to differential tissue sensitivity to Cd, evident by heterogeneous inhibition of photosynthesis. Part of this may be a result of selective disturbances in the leaf nutrient homeostasis. The better photosynthetic performance away from the veins compared to the bundle sheath cells, however, indicates that direct inhibition of photosynthesis by Cd dominates over inhibition caused by micronutrient deficiency.
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Affiliation(s)
- Filis Morina
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics & Biochemistry Branišovská 31/1160, 37005, České Budějovice, Czech Republic
| | - Hendrik Küpper
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics & Biochemistry Branišovská 31/1160, 37005, České Budějovice, Czech Republic; University of South Bohemia, Department of Experimental Plant Biology, Branišovská 31/1160, 37005, České Budějovice, Czech Republic.
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17
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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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18
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Höreth S, Pongrac P, van Elteren JT, Debeljak M, Vogel-Mikuš K, Weber M, Braun M, Pietzenuk B, Pečovnik M, Vavpetič P, Pelicon P, Arčon I, Krämer U, Clemens S. Arabidopsis halleri shows hyperbioindicator behaviour for Pb and leaf Pb accumulation spatially separated from Zn. THE NEW PHYTOLOGIST 2020; 226:492-506. [PMID: 31898330 DOI: 10.1111/nph.16373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/01/2019] [Indexed: 05/14/2023]
Abstract
Lead (Pb) ranks among the most problematic environmental pollutants. Background contamination of soils is nearly ubiquitous, yet plant Pb accumulation is barely understood. In a survey covering 165 European populations of the metallophyte Arabidopsis halleri, several field samples had indicated Pb hyperaccumulation, offering a chance to dissect plant Pb accumulation. Accumulation of Pb was analysed in A. halleri individuals from contrasting habitats under controlled conditions to rule out aerial deposition as a source of apparent Pb accumulation. Several elemental imaging techniques were employed to study the spatial distribution and ligand environment of Pb. Regardless of genetic background, A. halleri individuals showed higher shoot Pb accumulation than A. thaliana. However, dose-response curves revealed indicator rather than hyperaccumulator behaviour. Xylem sap data and elemental imaging unequivocally demonstrated the in planta mobility of Pb. Highest Pb concentrations were found in epidermal and vascular tissues. Distribution of Pb was distinct from that of the hyperaccumulated metal zinc. Most Pb was bound by oxygen ligands in bidentate coordination. A. halleri accumulates Pb whenever soil conditions render Pb phytoavailable. Considerable Pb accumulation under such circumstances, even in leaves of A. thaliana, strongly suggests that Pb can enter food webs and may pose a food safety risk.
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Affiliation(s)
- Stephan Höreth
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
| | - Paula Pongrac
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
- Jožef Stefan Institute, 1000, Ljubljana, Slovenia
| | | | - Marta Debeljak
- National Institute of Chemistry, 1000, Ljubljana, Slovenia
| | - Katarina Vogel-Mikuš
- Jožef Stefan Institute, 1000, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, 1000, Ljubljana, Slovenia
| | - Michael Weber
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
| | - Manuel Braun
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
| | - Björn Pietzenuk
- Molecular Genetics and Physiology of Plants, Ruhr University Bochum, 44801, Bochum, Germany
| | | | | | | | - Iztok Arčon
- Jožef Stefan Institute, 1000, Ljubljana, Slovenia
- University of Nova Gorica, 5000, Nova Gorica, Slovenia
| | - Ute Krämer
- Molecular Genetics and Physiology of Plants, Ruhr University Bochum, 44801, Bochum, Germany
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
- Bayreuth Center for Ecology and Environmental Research, University of Bayreuth, 95440, Bayreuth, Germany
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19
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Gomes MHF, Machado BA, Rodrigues ES, Montanha GS, Rossi ML, Otto R, Linhares FS, P Carvalho HW. In Vivo Evaluation of Zn Foliar Uptake and Transport in Soybean Using X-ray Absorption and Fluorescence Spectroscopy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12172-12181. [PMID: 31609615 DOI: 10.1021/acs.jafc.9b04977] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Understanding the mechanisms of absorption and transport of foliar nutrition is a key step towards the development of advanced fertilization methods. This study employed X-ray fluorescence (XRF) and X-ray absorption near edge spectroscopy (XANES) to trace the in vivo absorption and transport of ZnO and ZnSO4(aq) to soybean leaves (Glycine max). XRF maps monitored over 48 h showed a shape change of the dried ZnSO4(aq) droplet, indicating Zn2+ absorption. Conversely, these maps did not show short movement of Zn from ZnO. XRF measurements on petioles of leaves that received Zn2+ treatments clarified that the Zn absorption and transport in the form of ZnSO4(aq) was faster that of ZnO. Solubility was the major factor driving ZnSO4(aq) absorption. XANES speciation showed that in planta Zn is transported coordinated with organic acids. Because plants demand Zn during their entire lifecycle, the utilization of sources with different solubilities can increase Zn use efficiency.
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Affiliation(s)
- Marcos H F Gomes
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
| | - Bianca A Machado
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
| | - Eduardo S Rodrigues
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
| | - Gabriel Sgarbiero Montanha
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
| | - Mônica Lanzoni Rossi
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
| | - Rafael Otto
- "Luiz de Queiroz" College of Agriculture , University of São Paulo , Piracicaba , São Paulo 13418-900 , Brazil
| | - Francisco S Linhares
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
| | - Hudson W P Carvalho
- Centre for Nuclear Energy in Agriculture , University of São Paulo , Piracicaba , São Paulo 13416-000 , Brazil
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20
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Clemens S. Metal ligands in micronutrient acquisition and homeostasis. PLANT, CELL & ENVIRONMENT 2019; 42:2902-2912. [PMID: 31350913 DOI: 10.1111/pce.13627] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 05/09/2023]
Abstract
Acquisition and homeostasis of micronutrients such as iron (Fe) and zinc (Zn) pose specific challenges. Poor solubility and high reactivity require controlled synthesis and supply of ligands to complex these metals extracellularly and intracellularly. Cytosolic labile pools represent only a minute fraction of the total cellular content. Several low-molecular-weight ligands are known in plants, including sulfur ligands (cysteine and peptides), nitrogen/oxygen ligands (S-adenosyl-l-methionine-derived molecules and histidine), and oxygen ligands (phenolics and organic acids). Some ligands are secreted into the extracellular space and influence the phytoavailability of metal ions. A second principal function is the intracellular buffering of micronutrients as well as the facilitation of long-distance transport in xylem and phloem. Furthermore, low-molecular-weight ligands are involved in the storage of metals, predominantly in vacuoles. A detailed molecular understanding is hampered by technical limitations, in particular the difficulty to detect and quantify cellular metal-ligand complexes. More, but still too little, is known about ligand synthesis and the transport across membranes, either with or without a complexed metal. Metal ligands have an immediate impact on human well-being. Engineering metal ligand synthesis and distribution in crops has tremendous potential to improve the nutritional quality of food and to tackle major human health risks.
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Affiliation(s)
- Stephan Clemens
- Department of Plant Physiology and Bayreuth Center of Ecology and Environmental Research, University of Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
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21
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Zlobin IE, Kartashov AV, Nosov AV, Fomenkov AA, Kuznetsov VV. The labile zinc pool in plant cells. FUNCTIONAL PLANT BIOLOGY : FPB 2019; 46:796-805. [PMID: 31072451 DOI: 10.1071/fp19064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
Zinc is the most abundant and important transition metal in plants; however, the dynamic aspects of zinc homeostasis in plant cells are poorly understood. In this study we explored the pool of labile exchangeable zinc complexes in plant cells, and the potential influence of changes in intracellular zinc availability on cellular physiology. Work was performed on cultivated cell extracts of Arabidopsis thaliana (L.) Heynh. and Thellungiella salsuginea (Pall.) O.E. Schulz grown under control (3.48 µM Zn2+), 10-fold Zn excess or Zn starvation conditions. The free and labile Zn contents in the extracts were then determined by fluorimetric titration. We observed for the first time that plant cells contain micromolar concentrations of labile zinc complexes that account for a low percentage of the total zinc content. Labile zinc is mainly protein bound. Zn starvation inhibits cell proliferation and leads to the disappearance of the labile zinc pool, whereas Zn excess drastically increases the labile zinc pool. Free Zn2+ is buffered at picomolar concentrations in the intracellular milieu, and the increase in free Zn2+ concentrations to low nanomolar values clearly modulates enzyme activity by direct reversible binding. Such increases in free Zn2+ can be achieved by the substantial influx of additional zinc or by the oxidation of zinc-binding thiols. The observed features of the labile zinc pool in plant cells suggest it has a role in intracellular zinc trafficking and zinc signalling.
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Affiliation(s)
- Ilya E Zlobin
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia; and Corresponding author.
| | - Alexander V Kartashov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Alexander V Nosov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Artem A Fomenkov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Vladimir V Kuznetsov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
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22
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Li C, Wang P, van der Ent A, Cheng M, Jiang H, Lund Read T, Lombi E, Tang C, de Jonge MD, Menzies NW, Kopittke PM. Absorption of foliar-applied Zn in sunflower (Helianthus annuus): importance of the cuticle, stomata and trichomes. ANNALS OF BOTANY 2019; 123:57-68. [PMID: 30020418 PMCID: PMC6344099 DOI: 10.1093/aob/mcy135] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/16/2018] [Indexed: 05/06/2023]
Abstract
Background and Aims The pathways whereby foliar-applied nutrients move across the leaf surface remain unclear. The aim of the present study was to examine the pathways by which foliar-applied Zn moves across the sunflower (Helianthus annuus) leaf surface, considering the potential importance of the cuticle, stomata and trichomes. Methods Using synchrotron-based X-ray florescence microscopy and nanoscale secondary ion mass spectrometry (NanoSIMS), the absorption of foliar-applied ZnSO4 and nano-ZnO were studied in sunflower. The speciation of Zn was also examined using synchrotron-based X-ray absorption spectroscopy. Key Results Non-glandular trichomes (NGTs) were particularly important for foliar Zn absorption, with Zn preferentially accumulating within trichomes in ≤15 min. The cuticle was also found to have a role, with Zn appearing to move across the cuticle before accumulating in the walls of the epidermal cells. After 6 h, the total Zn that accumulated in the NGTs was approx. 1.9 times higher than in the cuticular tissues. No marked accumulation of Zn was found within the stomatal cavity, probably indicating a limited contribution of the stomatal pathway. Once absorbed, the Zn accumulated in the walls of the epidermal and the vascular cells, and trichome bases of both leaf sides, with the bundle sheath extensions that connected to the trichomes seemingly facilitating this translocation. Finally, the absorption of nano-ZnO was substantially lower than for ZnSO4, with Zn probably moving across the leaf surface as soluble Zn rather than nanoparticles. Conclusions In sunflower, both the trichomes and cuticle appear to be important for foliar Zn absorption.
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Affiliation(s)
- Cui Li
- The University of Queensland, School of Agriculture and Food Sciences, St Lucia, Queensland, Australia
| | - Peng Wang
- Nanjing Agricultural University, College of Resources and Environmental Sciences, Nanjing, China
- The University of Queensland, Centre for Soil and Environmental Research, School of Agriculture and Food Sciences, St Lucia, Queensland, Australia
| | - Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Australia
- Laboratoire Sols et Environnement, Université de Lorraine, France
| | - Miaomiao Cheng
- La Trobe University, Centre for AgriBioscience, Bundoora, Victoria, Australia
| | - Haibo Jiang
- University of Western Australia, Centre for Microscopy, Characterization and Analysis, Crawley, WA, Australia
| | - Thea Lund Read
- University of South Australia, Future Industries Institute, Mawson Lakes, South Australia, Australia
| | - Enzo Lombi
- University of South Australia, Future Industries Institute, Mawson Lakes, South Australia, Australia
| | - Caixian Tang
- La Trobe University, Centre for AgriBioscience, Bundoora, Victoria, Australia
| | | | - Neal W Menzies
- The University of Queensland, School of Agriculture and Food Sciences, St Lucia, Queensland, Australia
| | - Peter M Kopittke
- The University of Queensland, School of Agriculture and Food Sciences, St Lucia, Queensland, Australia
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Sloup V, Jankovská I, Száková J, Magdálek J, Sloup S, Langrová I. Effects of tapeworm infection on absorption and excretion of zinc and cadmium by experimental rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:35464-35470. [PMID: 30350142 DOI: 10.1007/s11356-018-3397-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 10/04/2018] [Indexed: 06/08/2023]
Abstract
The main objective of this study was to determine how rat tapeworms affect the excretion of zinc and cadmium through rat feces. Male rats (Rattus norvegicus var. alba) were divided into four groups, and the experiment was conducted over a 6-week period. The control groups (00; 0T) were provided with a standard ST-1 rodent mixture and received 10.5 mg of Zn/week. Groups P0 and PT were fed a mixture supplemented with the hyperaccumulating plant Arabidopsis halleri at a dosage of 123 mg Zn/week and 2.46 mg Cd/week. Groups 0T and PT were infected with the rat tapeworm (Hymenolepis diminuta). Fecal samples were collected 24 h post exposure. Zinc and cadmium concentrations in rat feces were analyzed using inductively coupled plasma optical emission spectrometry. Tapeworm presence decreased the amount of metals excreted through the feces of the host throughout the entire experiment, with the exception of 1 week (control group). No statistically significant differences between zinc excretion rates in the control groups (00 and 0T) were detected at any time throughout the experiment. A statistically significant difference between zinc excretion rates (p < 0.05) in the exposed groups (P0 and PT) was detected in 2 of the 6 monitored weeks. Group PT excreted significantly less cadmium (p < 0.01) than group P0 did in three of the 6 weeks. Overall, our results indicate that tapeworms are able to influence the excretion of metals by their host. Tapeworms accumulate metals from intestinal contents. It is not clear whether tapeworms carry out this process before the host tissues absorb the metals from the intestines or the tapeworms accumulate metals excreted from the body of the host back to the intestines. Most likely, it is a combination of both phenomena.
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Affiliation(s)
- Vladislav Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic.
| | - Ivana Jankovská
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Jiřina Száková
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Jan Magdálek
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Simon Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Iva Langrová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
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Chojnacka K, Samoraj M, Tuhy Ł, Michalak I, Mironiuk M, Mikulewicz M. Using XRF and ICP-OES in Biosorption Studies. Molecules 2018; 23:molecules23082076. [PMID: 30126247 PMCID: PMC6222416 DOI: 10.3390/molecules23082076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/13/2018] [Accepted: 08/13/2018] [Indexed: 11/16/2022] Open
Abstract
In this work, a method of recalculation of results of X-ray fluorescence (XRF) technique to Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) method was elaborated for biosorption studies. Equations that calibrate XRF to ICP-OES were determined, as a biosorbent strawberry, blackcurrant and raspberry seeds after supercritical CO₂ extraction were used. ICP-OES showed a better precision and lower detection limits than XRF. The latter technique is cheaper, requires minimal sample preparation and gives faster results. Linear regression of the data gave almost 1:1 correlations without additional correction (for Cu r² = 0.9998, Mn r² = 0.807, Zn r² = 0.979). Calibration and quantification of intensities of XRF was obtained using ICP-OES measurements after samples digestion with HNO₃ in a microwave system. High positive correlations were estimated for Cu, Mn, Zn. It was demonstrated that XRF technique can be used together with other well established techniques (ICP-OES) to produce quantitative data from biosorption studies. Elaboration of cheap and quick analytical methodology is an important aspect in development of new processes and products based on biosorption process.
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Affiliation(s)
- Katarzyna Chojnacka
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland.
| | - Mateusz Samoraj
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland.
| | - Łukasz Tuhy
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland.
| | - Izabela Michalak
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland.
| | - Małgorzata Mironiuk
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland.
| | - Marcin Mikulewicz
- Department of Dentofacial Orthopeadics and Orthodontics, Division of Facial Abnormalities, Medical University of Wrocław, ul. Krakowska 25, 50-425Wrocław, Poland.
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25
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Jankovská I, Sloup V, Száková J, Magdálek J, Nechybová S, Peřinková P, Langrová I. How tapeworm infection and consumption of a Cd and Zn hyperaccumulating plant may affect Cu, Fe, and Mn concentrations in an animal-a plant consumer and tapeworm host. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:4190-4196. [PMID: 29177784 DOI: 10.1007/s11356-017-0787-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 11/17/2017] [Indexed: 06/07/2023]
Abstract
This study evaluated the effects of a hyperaccumulator plant (Arabidopsis halleri), containing surplus of cadmium (Cd) and zinc (Zn) and being an admixture to the rat feed, on concentrations of copper (Cu), iron (Fe), and manganese (Mn) in the tissues of experimental rats infected/uninfected with the tapeworm (Hymenolepis diminuta). Male Wistar rats were divided into three groups (00, P0, and PT); the P0 and PT animals were fed a standard mixture for rats (ST-1) supplemented with the plant A. halleri at a weekly Zn and Cd dosage of 123 and 1 mg, respectively. Moreover, rats from the group PT were infected with the tapeworm. The group 00 served as control animals fed only ST-1 having no tapeworm infection. Rats were euthanized after 6 weeks, and Cu, Fe, and Mn levels were determined in rat and tapeworm tissues. The results indicated that both the consumption of hyperaccumulator plant and/or presence of tapeworms did have significant effect on Cu, Fe, and Mn concentrations in the host tissues. Concentrations of all the elements were higher in the rat liver and partially kidneys than in the tapeworms, and the concentrations of Cu, Fe, and Mn were affected by the consumption of Cd/Zn hyperaccumulator plants. Particularly, Fe concentrations in all rat tissues were significantly increased by consumption of A. halleri while decreased by the presence of tapeworms. Overall, the consumption of a Cd/Zn hyperaccumulator plant and tapeworm infection cause an imbalance in Cu, Fe, and Mn concentrations in the tissues of a consumer (experimental rats).
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Affiliation(s)
- Ivana Jankovská
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic.
| | - Vladislav Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Jiřina Száková
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Jan Magdálek
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Stanislava Nechybová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Pavla Peřinková
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Iva Langrová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
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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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27
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Siddiqi KS, Husen A. Plant Response to Engineered Metal Oxide Nanoparticles. NANOSCALE RESEARCH LETTERS 2017; 12:92. [PMID: 28168616 PMCID: PMC5293712 DOI: 10.1186/s11671-017-1861-y] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 01/19/2017] [Indexed: 05/21/2023]
Abstract
All metal oxide nanoparticles influence the growth and development of plants. They generally enhance or reduce seed germination, shoot/root growth, biomass production and physiological and biochemical activities. Some plant species have not shown any physiological change, although significant variations in antioxidant enzyme activity and upregulation of heat shock protein have been observed. Plants have evolved antioxidant defence mechanism which involves enzymatic as well as non-enzymatic components to prevent oxidative damage and enhance plant resistance to metal oxide toxicity. The exact mechanism of plant defence against the toxicity of nanomaterials has not been fully explored. The absorption and translocation of metal oxide nanoparticles in different parts of the plant depend on their bioavailability, concentration, solubility and exposure time. Further, these nanoparticles may reach other organisms, animals and humans through food chain which may alter the entire biodiversity. This review attempts to summarize the plant response to a number of metal oxide nanoparticles and their translocation/distribution in root/shoot. The toxicity of metal oxide nanoparticles has also been considered to see if they affect the production of seeds, fruits and the plant biomass as a whole.
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Affiliation(s)
| | - Azamal Husen
- Department of Biology, College of Natural and Computational Sciences, University of Gondar, PO Box #196, Gondar, Ethiopia
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28
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Sinclair SA, Larue C, Bonk L, Khan A, Castillo-Michel H, Stein RJ, Grolimund D, Begerow D, Neumann U, Haydon MJ, Krämer U. Etiolated Seedling Development Requires Repression of Photomorphogenesis by a Small Cell-Wall-Derived Dark Signal. Curr Biol 2017; 27:3403-3418.e7. [PMID: 29103938 DOI: 10.1016/j.cub.2017.09.063] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/05/2017] [Accepted: 09/28/2017] [Indexed: 11/27/2022]
Abstract
Etiolated growth in darkness or the irreversible transition to photomorphogenesis in the light engages alternative developmental programs operating across all organs of a plant seedling. Dark-grown Arabidopsis de-etiolated by zinc (dez) mutants exhibit morphological, cellular, metabolic, and transcriptional characteristics of light-grown seedlings. We identify the causal mutation in TRICHOME BIREFRINGENCE encoding a putative acyl transferase. Pectin acetylation is decreased in dez, as previously found in the reduced wall acetylation2-3 mutant, shown here to phenocopy dez. Moreover, pectin of dez is excessively methylesterified. The addition of very short fragments of homogalacturonan, tri-galacturonate, and tetra-galacturonate, restores skotomorphogenesis in dark-grown dez and similar mutants, suggesting that the mutants are unable to generate these de-methylesterified pectin fragments. In combination with genetic data, we propose a model of spatiotemporally separated photoreceptive and signal-responsive cell types, which contain overlapping subsets of the regulatory network of light-dependent seedling development and communicate via a pectin-derived dark signal.
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Affiliation(s)
- Scott A Sinclair
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Camille Larue
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Laura Bonk
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany; Geobotany, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Asif Khan
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Hiram Castillo-Michel
- ID21 Beamline, European Synchrotron Radiation Facility, Avenue des Martyrs, 38043 Grenoble, France
| | - Ricardo J Stein
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Daniel Grolimund
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Dominik Begerow
- Geobotany, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Ulla Neumann
- Central Microscopy, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg, 50829 Cologne, Germany
| | - Michael J Haydon
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany
| | - Ute Krämer
- Department of Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Universitätsstrasse, 44801 Bochum, Germany.
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29
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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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30
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Duran NM, Savassa SM, Lima RGD, de Almeida E, Linhares FS, van Gestel CAM, Pereira de Carvalho HW. X-ray Spectroscopy Uncovering the Effects of Cu Based Nanoparticle Concentration and Structure on Phaseolus vulgaris Germination and Seedling Development. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7874-7884. [PMID: 28817280 DOI: 10.1021/acs.jafc.7b03014] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Nanoparticles properties such as solubility, tunable surface charges, and singular reactivity might be explored to improve the performance of fertilizers. Nevertheless, these unique properties may also bring risks to the environment since the fate of nanoparticles is poorly understood. This study investigated the impact of a range of CuO nanoparticles sizes and concentrations on the germination and seedling development of Phaseolus vulgaris L. Nanoparticles did not affect seed germination, but seedling weight gain was promoted by 100 mg Cu L-1 and inhibited by 1 000 mg Cu L-1 of 25 nm CuO and CuSO4. Most of the Cu taken up remained in the seed coat with Cu hotspots in the hilum. X-ray absorption spectroscopy unraveled that most of the Cu remained in its pristine form. The higher surface reactivity of the 25 nm CuO nanoparticles might be responsible for its deleterious effects. The present study therefore highlights the importance of the nanoparticle structure for its physiological impacts.
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Affiliation(s)
- Nádia M Duran
- Laboratory of Nuclear Instrumentation (LIN), Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP) , Piracicaba, São Paulo 13416000, Brazil
| | - Susilaine M Savassa
- Laboratory of Nuclear Instrumentation (LIN), Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP) , Piracicaba, São Paulo 13416000, Brazil
| | - Rafael Giovanini de Lima
- Laboratory of Nuclear Instrumentation (LIN), Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP) , Piracicaba, São Paulo 13416000, Brazil
| | - Eduardo de Almeida
- Laboratory of Nuclear Instrumentation (LIN), Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP) , Piracicaba, São Paulo 13416000, Brazil
| | - Francisco S Linhares
- Laboratory of Plant Development and Structure (LaBDEV), Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP) , Piracicaba, São Paulo 13416-000, Brazil
| | - Cornelis A M van Gestel
- Department of Ecological Science, Faculty of Science, Vrije Universiteit , De Boelelaan 1085, 1081HV Amsterdam, The Netherlands
| | - Hudson W Pereira de Carvalho
- Laboratory of Nuclear Instrumentation (LIN), Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP) , Piracicaba, São Paulo 13416000, Brazil
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31
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Aucour AM, Bedell JP, Queyron M, Tholé R, Lamboux A, Sarret G. Zn Speciation and Stable Isotope Fractionation in a Contaminated Urban Wetland Soil-Typha latifolia System. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:8350-8358. [PMID: 27983820 DOI: 10.1021/acs.est.6b02734] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Wetlands play a key role in the immobilization of metallic contaminants. In this context the mechanisms of Zn sequestration and Zn transfer and storage in Typha latifolia L. colonizing a frequently flooded contaminated soil were studied. A combination of EXAFS spectroscopy, micro X-ray fluorescence (μXRF) and Zn isotope measurements was applied to soil, plant organs and decaying biomass. Zn was present in the soil as Zn-layered double hydroxide, as tetrahedral and octahedral sorbed Zn species, and as ZnS. Octahedral and tetrahedral Zn (attributed to symplastic Zn-organic acid and apoplasmic Zn-cell wall complexes, respectively) and Zn-thiol species were observed in the roots, rhizomes and stems. Iron plaque was present on the rhizomes and roots. Enrichment in light isotopes for Zn sorbed on the plaque relative to the soil (Δ66Znplaque-soil = -0.3 to -0.1‰) suggested the dissolution of ZnS (enriched in light isotopes) in the rhizosphere with subsequent Zn2+ sorption on the root plaque. Furthermore, enrichment in light isotopes of stems relative to leaves (Δ66Znstem-leaves = -0.2‰) suggested the remobilization of Zn via the phloem, from leaves back to the stems. Overall these data highlight the role of thiols in controlling Zn speciation during its transfer and storage in T. latifolia.
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Affiliation(s)
- Anne-Marie Aucour
- Université de Lyon, Université Lyon 1, ENS de Lyon, CNRS, UMR 5276 LGL-TPE, F-69622 Villeurbanne, France
| | - Jean-Philippe Bedell
- Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin F-69518 Vaulx-en-Velin, France
| | - Marine Queyron
- Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin F-69518 Vaulx-en-Velin, France
| | - Romain Tholé
- Université de Lyon, ENTPE, CNRS, UMR 5023 LEHNA, 2 Rue Maurice Audin F-69518 Vaulx-en-Velin, France
| | - Aline Lamboux
- Université de Lyon, ENS de Lyon, Université Lyon 1, CNRS, UMR 5276 LGL-TPE, F-69364 Lyon Cedex 7, France
| | - Géraldine Sarret
- ISTerre, Université Grenoble Alpes, CNRS, F-38058 Grenoble, France
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32
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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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33
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Castillo-Michel HA, Larue C, Pradas Del Real AE, Cotte M, Sarret G. Practical review on the use of synchrotron based micro- and nano- X-ray fluorescence mapping and X-ray absorption spectroscopy to investigate the interactions between plants and engineered nanomaterials. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 110:13-32. [PMID: 27475903 DOI: 10.1016/j.plaphy.2016.07.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 07/18/2016] [Accepted: 07/18/2016] [Indexed: 05/20/2023]
Abstract
The increased use of engineered nanomaterials (ENMs) in commercial products and the continuous development of novel applications, is leading to increased intentional and unintentional release of ENMs into the environment with potential negative impacts. Particularly, the partition of nanoparticles (NPs) to waste water treatment plant (WWTP) sludge represents a potential threat to agricultural ecosystems where these biosolids are being applied as fertilizers. Moreover, several applications of ENMs in agriculture and soil remediation are suggested. Therefore, detailed risk assessment should be done to evaluate possible secondary negative impacts. The impact of ENMS on plants as central component of ecosystems and worldwide food supply is of primary relevance. Understanding the fate and physical and chemical modifications of NPs in plants and their possible transfer into food chains requires specialized analytical techniques. Due to the importance of both chemical and physical factors to consider for a better understanding of ENMs behavior in complex matrices, these materials can be considered a new type of analyte. An ideal technique should require minimal sample preparation, be non-destructive, and offer the best balance between sensitivity, chemical specificity, and spatial resolution. Synchrotron radiation (SR) techniques are particularly adapted to investigate localization and speciation of ENMs in plants. SR X-ray fluorescence mapping (SR-XFM) offers multi-elemental detection with lateral resolution down to the tens of nm, in combination with spatially resolved X-ray absorption spectroscopy (XAS) speciation. This review will focus on important methodological aspects regarding sample preparation, data acquisition and data analysis of SR-XFM/XAS to investigate interactions between plants and ENMs.
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Affiliation(s)
| | - Camille Larue
- ECOLAB, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Ana E Pradas Del Real
- European Synchrotron Radiation Facility, Beamline ID21, Grenoble 38100, France; ISTerre (Institut des Sciences de la Terre), Université Grenoble Alpes, CNRS, Grenoble 38100, France
| | - Marine Cotte
- European Synchrotron Radiation Facility, Beamline ID21, Grenoble 38100, France
| | - Geraldine Sarret
- ISTerre (Institut des Sciences de la Terre), Université Grenoble Alpes, CNRS, Grenoble 38100, France
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34
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Tian S, Xie R, Wang H, Hu Y, Ge J, Liao X, Gao X, Brown P, Lin X, Lu L. Calcium Deficiency Triggers Phloem Remobilization of Cadmium in a Hyperaccumulating Species. PLANT PHYSIOLOGY 2016; 172:2300-2313. [PMID: 27789737 PMCID: PMC5129722 DOI: 10.1104/pp.16.01348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 10/24/2016] [Indexed: 05/19/2023]
Abstract
Understanding cadmium (Cd) accumulation in plants is critical for the development of plant-based strategies for soil remediation and crop safety. Sedum alfredii is a nonbrassica plant species known to hyperaccumulate Cd. The characteristics of Cd uptake, distribution, and retranslocation affected by the Ca status were investigated at cellular levels in S. alfredii Low Ca supply significantly increased Cd contents in shoots of S. alfredii, particularly in the young leaves. Micro x-ray fluorescence images confirmed that sequestration of Cd was greatly enhanced in the young leaves under Ca deficiency stress, with a significant amount of Cd localized in mesophyll cells, compared to the young leaves supplied with high Ca levels. Cd influx into protoplasts isolated from young leaves was significantly inhibited by the addition of Ca channel inhibitors, but not by pre-exposure to Ca deficiency. In stems, the Cd signal in vascular systems under low Ca levels was 10-fold higher than in those treated with higher Ca levels. A detailed investigation of vascular bundles revealed that an extremely high Cd signal induced by low Ca supply occurred in the phloem tissues, but not in the xylem tissues. Transfer of Cd pretreated plants to nutrient solutions at different Ca levels confirmed that a much higher amount of Cd was reallocated to the new growth tissues under low Ca stress compared to plants supplied with sufficient Ca. These results suggest that Ca deficiency triggered a highly efficient phloem remobilization of Cd in S. alfredii and subsequently enhanced Cd accumulation in its young leaves.
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Affiliation(s)
- Shengke Tian
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Ruohan Xie
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Haixin Wang
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Yan Hu
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Jun Ge
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Xingcheng Liao
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Xiaoyu Gao
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Patrick Brown
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Xianyong Lin
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.)
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
| | - Lingli Lu
- Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Ministry of Education, Hangzhou 310058, China (S.T., R.X., H.W., Y.H., J.G, X.C.L., X.G., L.L.);
- Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China (H.W., Y.H., X.G., X.Y.L., L.L.); and
- Department of Plant Sciences, University of California, Davis, California 95616 (P.B.)
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Jankovská I, Sloup V, Száková J, Langrová I, Sloup S. How the tapeworm Hymenolepis diminuta affects zinc and cadmium accumulation in a host fed a hyperaccumulating plant (Arabidopsis halleri). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:19126-19133. [PMID: 27344656 DOI: 10.1007/s11356-016-7123-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 06/20/2016] [Indexed: 06/06/2023]
Abstract
The effects of plant-bound zinc (Zn) and cadmium (Cd) on element uptake and their interactions in a parasite-host system were investigated in a model experiment. Male Wistar rats were divided into four groups (C, P, TC and TP). Groups TC and TP were infected with the rat tapeworm Hymenolepis diminuta. Groups C and TC were fed a standard rodent mixture (ST-1) and received 10.5 mg of Zn per week, while groups P and TP were fed a mixture supplemented with the Zn- and Cd-hyperaccumulating plant Arabidopsis halleri at a dosage of 236 mg Zn/week and 3.0 mg Cd/week. Rats were euthanized after 6 weeks, and Cd and Zn levels were determined in rat and tapeworm tissue. The results indicate that tapeworm presence did have an effect on Cd and Zn concentrations in the host tissue; the majority of tissues in infected rats had statistically significant lower Zn and Cd concentrations than did uninfected rats. Tapeworms accumulated more zinc and cadmium than did the majority of host tissues. This important finding confirms the ability of tapeworms to accumulate certain elements (heavy metals) from the host body to their own body tissues. Thus, tapeworms can decrease heavy metal concentrations in host tissues.
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Affiliation(s)
- I Jankovská
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 957, 16521, Prague 6 - Suchdol, Czech Republic.
| | - V Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 957, 16521, Prague 6 - Suchdol, Czech Republic
| | - J Száková
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 957, 16521, Prague 6 - Suchdol, Czech Republic
| | - I Langrová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 957, 16521, Prague 6 - Suchdol, Czech Republic
| | - S Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamycka 957, 16521, Prague 6 - Suchdol, Czech Republic
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Schaumlöffel D, Hutchinson R, Malherbe J, Coustumer PL, Gontier E, Isaure MP. Novel Methods for Bioimaging Including LA-ICP-MS, NanoSIMS, TEM/X-EDS, and SXRF. Metallomics 2016. [DOI: 10.1002/9783527694907.ch4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Dirk Schaumlöffel
- Université de Pau et des Pays de l'Adour, CNRS; Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM); UMR 5254 64000 Pau France
| | - Robert Hutchinson
- Electro Scientific Industries; 8 Avro Court, Ermine Business Park Huntingdon, Cambridge PE29 6XS UK
| | - Julien Malherbe
- Université de Pau et des Pays de l'Adour, CNRS; Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM); UMR 5254 64000 Pau France
| | - Philippe Le Coustumer
- Université de Bordeaux, UF Sciences de la Terre et Environnement; Allée G. Saint-Hillaire 33615 Pessac France
| | - Etienne Gontier
- Université de Bordeaux, Bordeaux Imaging Center; UMS 3420 CNRS - US4 INSERM, Pôle d'imagerie électronique; 146 rue Léo Saignat 33076 Bordeaux France
| | - Marie-Pierre Isaure
- Université de Pau et des Pays de l'Adour, CNRS; Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM); UMR 5254 64000 Pau France
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Glińska S, Gapińska M, Michlewska S, Skiba E, Kubicki J. Analysis of Triticum aestivum seedling response to the excess of zinc. PROTOPLASMA 2016; 253:367-77. [PMID: 25902894 PMCID: PMC4783454 DOI: 10.1007/s00709-015-0816-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/06/2015] [Indexed: 05/20/2023]
Abstract
The effects of 50 and 300 mg L(-1) Zn(2+) (50 Zn and 300 Zn) were investigated in Triticum aestivum (cv. Żura) grown hydroponically for 7 days. Although wheat treated with 50 Zn took up relatively high amount of the metal (8,943 and 1,503 mg kg(-1) DW in roots and shoots, respectively), none of the morphological and cytological parameters were changed. After 300 Zn, the metal concentration increased to 32,205 and 5,553 mg kg(-1) DW in roots and shoots, respectively. It was connected with the depletion of shoot and root growth, their fresh and dry weight, water content and mitotic index of root meristematic cells. Microelement contents (Cu, Mn and Fe) after 50 Zn were changed only in roots, while 300 Zn disturbed ion balance in whole plants. The most evident ultrastructural alterations of root meristematic cells caused by both tested Zn(2+) doses included increased vacuolization, accumulation of granular deposits inside vacuoles and cell wall thickening. The effect of 300 Zn on root cell ultrastructure was greater that of 50 Zn. The majority of mitochondria had condensed matrix and swollen cristae, plastids contained plastoglobuli, nucleoli were ring-shaped, thinned down cytoplasm with lipid droplets and swollen endoplasmic reticulum cisternae appeared. In mesophyll cells, 50 Zn caused slight reorganization of chloroplast thylakoids and formation of condensed mitochondria. Three hundred Zn triggered more extensive, but not degenerative, changes: plasmolysis of some cells; chloroplasts with protrusions, changed thylakoid organisation and often large starch grains; irregular, condensed mitochondria. The results indicate that T. aestivum cv. Żura is relatively tolerant to Zn stress.
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Affiliation(s)
- Sława Glińska
- Laboratory of Microscopy Imaging and Advanced Biological Technics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland.
| | - Magdalena Gapińska
- Laboratory of Microscopy Imaging and Advanced Biological Technics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - Sylwia Michlewska
- Laboratory of Microscopy Imaging and Advanced Biological Technics, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - Elżbieta Skiba
- Institute of General and Ecological Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924, Lodz, Poland
| | - Jakub Kubicki
- Institute of General and Ecological Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924, Lodz, Poland
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Huguet S, Isaure MP, Bert V, Laboudigue A, Proux O, Flank AM, Vantelon D, Sarret G. Fate of cadmium in the rhizosphere of Arabidopsis halleri grown in a contaminated dredged sediment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 536:468-480. [PMID: 26233782 DOI: 10.1016/j.scitotenv.2015.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 06/30/2015] [Accepted: 07/02/2015] [Indexed: 05/15/2023]
Abstract
In regions impacted by mining and smelting activities, dredged sediments are often contaminated with metals. Phytotechnologies could be used for their management, but more knowledge on the speciation of metals in the sediment and on their fate after colonization by plant roots is needed. This work was focused on a dredged sediment from the Scarpe river (North of France), contaminated with Zn and Cd. Zn, Cd hyperaccumulating plants Arabidopsis halleri from metallicolous and non-metallicolous origin were grown on the sediment for five months in a pot experiment. The nature and extent of the modifications in Cd speciation with or without plant were determined by electron microscopy, micro X-ray fluorescence and bulk and micro X-ray absorption spectroscopy. In addition, changes in Cd exchangeable and bioavailable pools were evaluated, and Cd content in leachates was measured. Finally, Cd plant uptake and plant growth parameters were monitored. In the original sediment, Cd was present as a mixed Zn, Cd, Fe sulfide. After five months, although pots still contained reduced sulfur, Cd-bearing sulfides were totally oxidized in vegetated pots, whereas a minor fraction (8%) was still present in non-vegetated ones. Secondary species included Cd bound to O-containing groups of organic matter and Cd phosphates. Cd exchangeability and bioavailability were relatively low and did not increase during changes in Cd speciation, suggesting that Cd released by sulfide oxidation was readily taken up with strong interactions with organic matter and phosphate ligands. Thus, the composition of the sediment, the oxic conditions and the rhizospheric activity (regardless of the plant origin) created favorable conditions for Cd stabilization. However, it should be kept in mind that returning to anoxic conditions may change Cd speciation, so the species formed cannot be considered as stable on the long term.
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Affiliation(s)
- Séphanie Huguet
- ISTerre, Université Grenoble Alpes, CNRS, F-38041 Grenoble, France; Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE), Institut des sciences analytiques et de physico-chimie pour l'environnement et les matériaux (IPREM UMR 5254), Université de Pau et des Pays de l'Adour and CNRS, Hélioparc, 2 Av. Pierre Angot, 64053 Pau Cedex 9, France; INERIS, Parc technologique Alata, 60550 Verneuil-en-Halatte, France; EMDouai, MPE-GCE, 930 Boulevard Lahure, 59500 Douai, France.
| | - Marie-Pierre Isaure
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE), Institut des sciences analytiques et de physico-chimie pour l'environnement et les matériaux (IPREM UMR 5254), Université de Pau et des Pays de l'Adour and CNRS, Hélioparc, 2 Av. Pierre Angot, 64053 Pau Cedex 9, France
| | - Valérie Bert
- INERIS, Parc technologique Alata, 60550 Verneuil-en-Halatte, France
| | | | - Olivier Proux
- OSUG, UMS832 CNRS/UJF, 414 rue de la piscine, 38400 Saint-Martin d'Hères, France
| | - Anne-Marie Flank
- Beamline LUCIA, SLS, Swiss Light Source, CH-5232 Villigen, Switzerland; Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
| | - Delphine Vantelon
- Beamline LUCIA, SLS, Swiss Light Source, CH-5232 Villigen, Switzerland; Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
| | - Géraldine Sarret
- ISTerre, Université Grenoble Alpes, CNRS, F-38041 Grenoble, France.
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Villafort Carvalho MT, Pongrac P, Mumm R, van Arkel J, van Aelst A, Jeromel L, Vavpetič P, Pelicon P, Aarts MGM. Gomphrena claussenii, a novel metal-hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals. THE NEW PHYTOLOGIST 2015; 208:763-75. [PMID: 26083742 DOI: 10.1111/nph.13500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/05/2015] [Indexed: 05/17/2023]
Abstract
Gomphrena claussenii is a recently described zinc (Zn)- and cadmium (Cd)-hypertolerant Amaranthaceae species displaying a metal bioindicator Zn/Cd accumulation response. We investigated the Zn and Cd distribution in stem and leaf tissues of G. claussenii at the cellular level, and determined metabolite profiles to investigate metabolite involvement in Zn and Cd sequestration. Gomphrena claussenii plants exposed to high Zn and Cd supply were analysed by scanning electron microscopy with energy-dispersive X-ray (SEM-EDX) and micro-proton-induced X-ray emission (micro-PIXE). In addition, gas chromatography-time of flight-mass spectrometry (GC-TOF-MS) was used to determine metabolite profiles on high Zn and Cd exposure. Stem and leaf tissues of G. claussenii plants exposed to control and high Cd conditions showed the abundant presence of calcium oxalate (CaOx) crystals, but on high Zn exposure, their abundance was strongly reduced. Ca and Cd co-localized to the CaOx crystals in Cd-exposed plants. Citrate, malate and oxalate levels were all higher in shoot tissues of metal-exposed plants, with oxalate levels induced 2.6-fold on Zn exposure and 6.4-fold on Cd exposure. Sequestration of Cd in vacuolar CaOx crystals of G. claussenii is found to be a novel mechanism to deal with Cd accumulation and tolerance.
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Affiliation(s)
- Mina T Villafort Carvalho
- Laboratory of Genetics, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
| | - Paula Pongrac
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Roland Mumm
- Plant Research International, Business Unit Bioscience, Wageningen UR, PO Box 16, 6700 AA, Wageningen, the Netherlands
| | - Jeroen van Arkel
- Plant Research International, Business Unit Bioscience, Wageningen UR, PO Box 16, 6700 AA, Wageningen, the Netherlands
| | - Adriaan van Aelst
- Laboratory of Virology, Wageningen Electron Microscopy Centre, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
| | - Luka Jeromel
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Primož Vavpetič
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Primož Pelicon
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Mark G M Aarts
- Laboratory of Genetics, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
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Nafisi M, Stranne M, Fimognari L, Atwell S, Martens HJ, Pedas PR, Hansen SF, Nawrath C, Scheller HV, Kliebenstein DJ, Sakuragi Y. Acetylation of cell wall is required for structural integrity of the leaf surface and exerts a global impact on plant stress responses. FRONTIERS IN PLANT SCIENCE 2015; 6:550. [PMID: 26257757 PMCID: PMC4510344 DOI: 10.3389/fpls.2015.00550] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 07/06/2015] [Indexed: 05/25/2023]
Abstract
The epidermis on leaves protects plants from pathogen invasion and provides a waterproof barrier. It consists of a layer of cells that is surrounded by thick cell walls, which are partially impregnated by highly hydrophobic cuticular components. We show that the Arabidopsis T-DNA insertion mutants of REDUCED WALL ACETYLATION 2 (rwa2), previously identified as having reduced O-acetylation of both pectins and hemicelluloses, exhibit pleiotrophic phenotype on the leaf surface. The cuticle layer appeared diffused and was significantly thicker and underneath cell wall layer was interspersed with electron-dense deposits. A large number of trichomes were collapsed and surface permeability of the leaves was enhanced in rwa2 as compared to the wild type. A massive reprogramming of the transcriptome was observed in rwa2 as compared to the wild type, including a coordinated up-regulation of genes involved in responses to abiotic stress, particularly detoxification of reactive oxygen species and defense against microbial pathogens (e.g., lipid transfer proteins, peroxidases). In accordance, peroxidase activities were found to be elevated in rwa2 as compared to the wild type. These results indicate that cell wall acetylation is essential for maintaining the structural integrity of leaf epidermis, and that reduction of cell wall acetylation leads to global stress responses in Arabidopsis.
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Affiliation(s)
- Majse Nafisi
- Copenhagen Plant Science CenterFrederiksberg, Denmark
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
| | - Maria Stranne
- Copenhagen Plant Science CenterFrederiksberg, Denmark
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
| | - Lorenzo Fimognari
- Copenhagen Plant Science CenterFrederiksberg, Denmark
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
| | - Susanna Atwell
- Department of Plant Sciences, University of California, DavisDavis, CA, USA
| | - Helle J. Martens
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
| | - Pai R. Pedas
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
| | - Sara F. Hansen
- Copenhagen Plant Science CenterFrederiksberg, Denmark
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
| | - Christiane Nawrath
- Department of Plant Molecular Biology, University of LausanneLausanne, Switzerland
| | - Henrik V. Scheller
- Physical Biosciences Division, Lawrence Berkeley National LaboratoryBerkeley, CA, USA
- Department of Plant and Microbial Biology, University of California, BerkeleyBerkeley, CA, USA
| | - Daniel J. Kliebenstein
- Department of Plant Sciences, University of California, DavisDavis, CA, USA
- Danish National Research Foundation Center DynaMOFrederiksberg, Denmark
| | - Yumiko Sakuragi
- Copenhagen Plant Science CenterFrederiksberg, Denmark
- Department of Plant and Environmental Sciences, University of CopenhagenFrederiksberg, Denmark
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Válek P, Sloup V, Jankovská I, Langrová I, Száková J, Miholová D, Horáková B, Křivská D. Can the Hyperaccumulating Plant Arabidopsis halleri in Feed Influence a Given Consumer Organism (Rattus norvegicus var. alba)? BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 95:116-121. [PMID: 25917848 DOI: 10.1007/s00128-015-1555-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 04/20/2015] [Indexed: 06/04/2023]
Abstract
Zinc and cadmium concentrations in rat (Rattus norvegicus var. alba) tissues were analyzed by inductively coupled plasma optical emission spectrometry. Rats were fed the zinc and cadmium hyperaccumulating plant, Arabidopsis halleri. When compared to the control group, a Cd increase in all tissues (liver, kidneys, small intestine, spleen, testes, muscle), with the exception of bone tissue was observed. In comparison to the control group, the kidneys, liver and small intestine contained 375, 162, and 80 times more Cd, respectively. Differences between zinc concentrations in rats fed with A. halleri and those of the control group were significant only in the small intestine and kidney tissues. Results suggest using the hyperaccumulating plant A. halleri as a feed stresses the consumer organism not through its Zn content, but through its Cd content.
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Affiliation(s)
- Petr Válek
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, 165 21, Prague 6, Suchdol, Czech Republic
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Tan QG, Wang Y, Wang WX. Speciation of Cu and Zn in Two Colored Oyster Species Determined by X-ray Absorption Spectroscopy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:6919-6925. [PMID: 25936404 DOI: 10.1021/es506330h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In oysters, Cu and Zn concentration can reach extraordinarily high (1-2% of tissue dry weights), leading to intense green or blue colors in oyster tissues. It is thus puzzling how oysters detoxify the excessively accumulated metals. Here, we used X-ray absorption spectroscopy to examine the Cu and Zn speciation in two "colored" oysters (Crassostrea hongkongensis and Crassostrea sikamea) collected from a severely metal-contaminated estuary. In contaminated oysters, we found a much higher proportion of tissue Cu and Zn as oxygen- or nitrogen-bonded species, contrasting to the sulfur-bonded (thiolate) species in normal oysters. Speciation of Cu and Zn in mantle was similar to that in gills, both of which were different from that in the digestive gland. In C. sikamea, the difference of metal speciation between normal and contaminated individuals was of similar pattern but less pronounced than that in C. hongkongensis. In normal oysters, Cu existed mainly as Cu(I) bound to sulfur, whereas in contaminated oysters mainly as Cu(II) bound to oxygen or nitrogen. Our study provided direct and semiquantitative information on the changes of metal speciation in contaminated oysters, indicating that oysters could efficiently detoxify the excessively accumulated Cu and Zn by storing them in oxygen- and nitrogen-bonded complexes in metal-rich environments.
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Affiliation(s)
- Qiao-Guo Tan
- †Key Laboratory of the Coastal and Wetland Ecosystems, Ministry of Education, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
| | - Yu Wang
- ‡Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Wen-Xiong Wang
- †Key Laboratory of the Coastal and Wetland Ecosystems, Ministry of Education, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
- §Division of Life Science, Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong
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43
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Meyer CL, Juraniec M, Huguet S, Chaves-Rodriguez E, Salis P, Isaure MP, Goormaghtigh E, Verbruggen N. Intraspecific variability of cadmium tolerance and accumulation, and cadmium-induced cell wall modifications in the metal hyperaccumulator Arabidopsis halleri. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:3215-27. [PMID: 25873677 PMCID: PMC4449548 DOI: 10.1093/jxb/erv144] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Certain molecular mechanisms of Cd tolerance and accumulation have been identified in the model species Arabidopsis halleri, while intraspecific variability of these traits and the mechanisms of shoot detoxification were little addressed. The Cd tolerance and accumulation of metallicolous and non-metallicolous A. halleri populations from different genetic units were tested in controlled conditions. In addition, changes in shoot cell wall composition were investigated using Fourier transform infrared spectroscopy. Indeed, recent works on A. halleri suggest Cd sequestration both inside cells and in the cell wall/apoplast. All A. halleri populations tested were hypertolerant to Cd, and the metallicolous populations were on average the most tolerant. Accumulation was highly variable between and within populations, and populations that were non-accumulators of Cd were identified. The effect of Cd on the cell wall composition was quite similar in the sensitive species A. lyrata and in A. halleri individuals; the pectin/polysaccharide content of cell walls seems to increase after Cd treatment. Nevertheless, the changes induced by Cd were more pronounced in the less tolerant individuals, leading to a correlation between the level of tolerance and the extent of modifications. This work demonstrated that Cd tolerance and accumulation are highly variable traits in A. halleri, suggesting adaptation at the local scale and involvement of various molecular mechanisms. While in non-metallicolous populations drastic modifications of the cell wall occur due to higher Cd toxicity and/or Cd immobilization in this compartment, the increased tolerance of metallicolous populations probably involves other mechanisms such as vacuolar sequestration.
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Affiliation(s)
- Claire-Lise Meyer
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Michal Juraniec
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Stéphanie Huguet
- Laboratoire de Chimie Analytique Bio Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM, UMR 5254), Université de Pau et des Pays de l'Adour, 64053 Pau cedex 9, France
| | - Elena Chaves-Rodriguez
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Pietro Salis
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Marie-Pierre Isaure
- Laboratoire de Chimie Analytique Bio Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux (IPREM, UMR 5254), Université de Pau et des Pays de l'Adour, 64053 Pau cedex 9, France
| | - Erik Goormaghtigh
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Nathalie Verbruggen
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium
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Isaure MP, Huguet S, Meyer CL, Castillo-Michel H, Testemale D, Vantelon D, Saumitou-Laprade P, Verbruggen N, Sarret G. Evidence of various mechanisms of Cd sequestration in the hyperaccumulator Arabidopsis halleri, the non-accumulator Arabidopsis lyrata, and their progenies by combined synchrotron-based techniques. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:3201-14. [PMID: 25873676 DOI: 10.1093/jxb/erv131] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Arabidopsis halleri is a model plant for Zn and Cd hyperaccumulation. The objective of this study was to determine the relationship between the chemical forms of Cd, its distribution in leaves, and Cd accumulation and tolerance. An interspecific cross was carried out between A. halleri and the non-tolerant and non-hyperaccumulating relative A. lyrata providing progenies segregating for Cd tolerance and accumulation. Cd speciation and distribution were investigated using X-ray absorption spectroscopy and microfocused X-ray fluorescence. In A. lyrata and non-tolerant progenies, Cd was coordinated by S atoms only or with a small contribution of O groups. Interestingly, the proportion of O ligands increased in A. halleri and tolerant progenies, and they were predominant in most of them, while S ligands were still present. Therefore, the binding of Cd with O ligands was associated with Cd tolerance. In A. halleri, Cd was mainly located in the xylem, phloem, and mesophyll tissue, suggesting a reallocation process for Cd within the plant. The distribution of the metal at the cell level was further discussed. In A. lyrata, the vascular bundles were also Cd enriched, but the epidermis was richer in Cd as compared with the mesophyll. Cd was identified in trichomes of both species. This work demonstrated that both Cd speciation and localization were related to the tolerance character of the plant.
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Affiliation(s)
- Marie-Pierre Isaure
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des sciences analytiques et de physico-chimie pour l'environnement et les matériaux (LCABIE/IPREM-UMR 5254), Université de Pau et des Pays de l'Adour and CNRS, Hélioparc, 2 Av. Pierre Angot, 64053 PAU Cedex 9, France
| | - Stéphanie Huguet
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des sciences analytiques et de physico-chimie pour l'environnement et les matériaux (LCABIE/IPREM-UMR 5254), Université de Pau et des Pays de l'Adour and CNRS, Hélioparc, 2 Av. Pierre Angot, 64053 PAU Cedex 9, France
| | - Claire-Lise Meyer
- Laboratoire de Physiologie et de Génétique Moléculaire des Plantes (LPGMP), Université Libre de Bruxelles, Campus Plaine-ULB, CP 242, Bd du Triomphe, B-1050 Brussels, Belgium
| | - Hiram Castillo-Michel
- European Synchrotron Radiation Facility (ESRF), ID21 Beamline, BP 220, 38043 Grenoble, France
| | - Denis Testemale
- Université Grenoble Alpes, Institut Néel, 38000 Grenoble, France CNRS, Institut Néel, 38042 Grenoble France
| | - Delphine Vantelon
- SOLEIL Synchrotron, LUCIA Beamline, BP48, 91192 Gif sur Yvette, France
| | - Pierre Saumitou-Laprade
- Laboratoire de Génétique et Evolution des Populations Végétales (GEPV-UMR 8198), Université des Sciences et Technologies de Lille and CNRS- Lille 1, 59655 Villeneuve d'Ascq Cedex, France
| | - Nathalie Verbruggen
- Laboratoire de Physiologie et de Génétique Moléculaire des Plantes (LPGMP), Université Libre de Bruxelles, Campus Plaine-ULB, CP 242, Bd du Triomphe, B-1050 Brussels, Belgium
| | - Géraldine Sarret
- Institut des Sciences de la Terre (ISTerre), Université Joseph Fourier and CNRS, BP 53, 38041 Grenoble Cedex 9, France
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Samardjieva KA, Gonçalves RF, Valentão P, Andrade PB, Pissarra J, Pereira S, Tavares F. Zinc Accumulation and Tolerance in Solanum nigrum are Plant Growth Dependent. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2015; 17:272-279. [PMID: 25397986 DOI: 10.1080/15226514.2014.898018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Zinc tolerance, accumulation, and organic acid production by Solanum nigrum, a known Zn accumulator, was studied during pre- and post-flowering stages of development. The plants, when challenged with Zn concentrations lethal to plantlets, showed an increase in tolerance from pre-flowering to post-flowering, which was accompanied by a reduction of Zn translocation to the aerial plant parts. Treatment with Zn induced a differential response in organic acids according to the plant organ and developmental stage. In the roots, where Zn concentrations were similar in pre- and post-flowering plants, a general decrease in organic acid in pre-flowering roots contrasted with the increase observed in post-flowering plants. In the stems, Zn induced a generalized increase in organic acids at both growth stages while in the leaves, a slight increase in malic and shikimic was observed in pre-flowering plants and only shikimic acid levels were significantly increased in post-flowering plants. This work shows that Zn accumulation and tolerance in S. nigrum vary during plant development--an observation that may be important to improve the efficiency of phytoremediation approaches. Furthermore, the data suggest the involvement of specific organic acids in this response.
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Affiliation(s)
- Kalina A Samardjieva
- a IBMC - Instituto de Biologia Molecular e Celular , Universidade do Porto , Porto , Portugal
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Lu L, Liao X, Labavitch J, Yang X, Nelson E, Du Y, Brown PH, Tian S. Speciation and localization of Zn in the hyperaccumulator Sedum alfredii by extended X-ray absorption fine structure and micro-X-ray fluorescence. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2014; 84:224-232. [PMID: 25306525 DOI: 10.1016/j.plaphy.2014.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 10/03/2014] [Indexed: 06/04/2023]
Abstract
Differences in metal homeostasis among related plant species can give important information of metal hyperaccumulation mechanisms. Speciation and distribution of Zn were investigated in a hyperaccumulating population of Sedum alfredii by using extended X-ray absorption fine structure and micro-synchrotron X-ray fluorescence (μ-XRF), respectively. The hyperaccumulator uses complexation with oxygen donor ligands for Zn storage in leaves and stems, and variations in the Zn speciation was noted in different tissues. The dominant chemical form of Zn in leaves was most probably a complex with malate, the most prevalent organic acid in S. alfredii leaves. In stems, Zn was mainly associated with malate and cell walls, while Zn-citrate and Zn-cell wall complexes dominated in the roots. Two-dimensional μ-XRF images revealed age-dependent differences in Zn localization in S. alfredii stems and leaves. In old leaves of S. alfredii, Zn was high in the midrib, margin regions and the petiole, whereas distribution of Zn was essentially uniform in young leaves. Zinc was preferentially sequestered by cells near vascular bundles in young stems, but was highly localized to vascular bundles and the outer cortex layer of old stems. The results suggest that tissue- and age-dependent variations of Zn speciation and distribution occurred in the hyperaccumulator S. alfredii, with most of the Zn complexed with malate in the leaves, but a shift to cell wall- and citric acid-Zn complexes during transportation and storage in stems and roots. This implies that biotransformation in Zn complexation occurred during transportation and storage processes in the plants of S. alfredii.
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Affiliation(s)
- Lingli Lu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310058, China.
| | - Xingcheng Liao
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310058, China
| | - John Labavitch
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Xiaoe Yang
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Erik Nelson
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Yonghua Du
- Institute of Chemical & Engineering Sciences, Agency for Science, Technology and Research (ASTAR), Jurong Island, Singapore 627833, Singapore
| | - Patrick H Brown
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
| | - Shengke Tian
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310058, China; Department of Plant Sciences, University of California, Davis, CA 95616, USA.
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47
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Leonardo T, Farhi E, Boisson AM, Vial J, Cloetens P, Bohic S, Rivasseau C. Determination of elemental distribution in green micro-algae using synchrotron radiation nano X-ray fluorescence (SR-nXRF) and electron microscopy techniques--subcellular localization and quantitative imaging of silver and cobalt uptake by Coccomyxa actinabiotis. Metallomics 2014; 6:316-29. [PMID: 24394991 DOI: 10.1039/c3mt00281k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The newly discovered unicellular micro-alga Coccomyxa actinabiotis proves to be highly radio-tolerant and strongly concentrates radionuclides, as well as large amounts of toxic metals. This study helps in the understanding of the mechanisms involved in the accumulation and detoxification of silver and cobalt. Elemental distribution inside Coccomyxa actinabiotis cells was determined using synchrotron nano X-ray fluorescence spectroscopy at the ID22 nano fluorescence imaging beamline of the European Synchrotron Radiation Facility. The high resolution and high sensitivity of this technique enabled the assessment of elemental associations and exclusions in subcellular micro-algae compartments. A quantitative treatment of the scans was implemented to yield absolute concentrations of each endogenous and exogenous element with a spatial resolution of 100 nm and compared to the macroscopic content in cobalt and silver determined using inductively coupled plasma-mass spectrometry. The nano X-ray fluorescence imaging was complemented by transmission electron microscopy coupled to X-ray microanalysis (TEM-EDS), yielding differential silver distribution in the cell wall, cytosol, nucleus, chloroplast and mitochondria with unique resolution. The analysis of endogenous elements in control cells revealed that iron had a unique distribution; zinc, potassium, manganese, molybdenum, and phosphate had their maxima co-localized in the same area; and sulfur, copper and chlorine were almost homogeneously distributed among the whole cell. The subcellular distribution and quantification of cobalt and silver in micro-alga, assessed after controlled exposure to various concentrations, revealed that exogenous metals were mainly sequestered inside the cell rather than on mucilage or the cell wall, with preferential compartmentalization. Cobalt was homogeneously distributed outside of the chloroplast. Silver was localized in the cytosol at low concentration and in the whole cell excluding the nucleus at high concentration. Exposure to low concentrations of cobalt or silver did not alter the localization nor the concentration of endogenous elements within the cells. To our knowledge, this is the first report on element co-localization and segregation at the sub-cellular level in micro-algae by means of synchrotron nano X-ray fluorescence spectroscopy.
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Affiliation(s)
- T Leonardo
- CEA, IRTSV, Laboratoire de Physiologie Cellulaire Végétale, F-38054 Grenoble, France
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48
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Hauser MT. Molecular basis of natural variation and environmental control of trichome patterning. FRONTIERS IN PLANT SCIENCE 2014; 5:320. [PMID: 25071803 PMCID: PMC4080826 DOI: 10.3389/fpls.2014.00320] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 06/17/2014] [Indexed: 05/17/2023]
Abstract
Trichomes are differentiated epidermal cells on above ground organs of nearly all land plants. They play important protective roles as structural defenses upon biotic attacks such as herbivory, oviposition and fungal infections, and against abiotic stressors such as drought, heat, freezing, excess of light, and UV radiation. The pattern and density of trichomes is highly variable within natural population suggesting tradeoffs between traits positively affecting fitness such as resistance and the costs of trichome production. The spatial distribution of trichomes is regulated through a combination of endogenous developmental programs and external signals. This review summarizes the current understanding on the molecular basis of the natural variation and the role of phytohormones and environmental stimuli on trichome patterning.
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Affiliation(s)
- Marie-Theres Hauser
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life SciencesVienna, Austria
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49
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Zhao FJ, Moore KL, Lombi E, Zhu YG. Imaging element distribution and speciation in plant cells. TRENDS IN PLANT SCIENCE 2014; 19:183-92. [PMID: 24394523 DOI: 10.1016/j.tplants.2013.12.001] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 11/27/2013] [Accepted: 12/09/2013] [Indexed: 05/08/2023]
Abstract
To maintain cellular homeostasis, concentrations, chemical speciation, and localization of mineral nutrients and toxic trace elements need to be regulated. Imaging the cellular and subcellular localization of elements and measuring their in situ chemical speciation are challenging tasks that can be undertaken using synchrotron-based techniques, such as X-ray fluorescence and X-ray absorption spectrometry, and mass spectrometry-based techniques, such as secondary ion mass spectrometry and laser-ablation inductively coupled plasma mass spectrometry. We review the advantages and limitations of these techniques, and discuss examples of their applications, which have revealed highly heterogeneous distribution patterns of elements in different cell types, often varying in chemical speciation. Combining these techniques with molecular genetic approaches can unravel functions of genes involved in element homeostasis.
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Affiliation(s)
- Fang-Jie Zhao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement and Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK.
| | - Katie L Moore
- Department of Materials, University of Oxford, Oxford OX1 3PH, UK
| | - Enzo Lombi
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, Mawson Lakes, South Australia SA-5095, Australia
| | - Yong-Guan Zhu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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50
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Grillet L, Ouerdane L, Flis P, Hoang MTT, Isaure MP, Lobinski R, Curie C, Mari S. Ascorbate efflux as a new strategy for iron reduction and transport in plants. J Biol Chem 2014; 289:2515-25. [PMID: 24347170 PMCID: PMC3908387 DOI: 10.1074/jbc.m113.514828] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 12/16/2013] [Indexed: 11/06/2022] Open
Abstract
Iron (Fe) is essential for virtually all living organisms. The identification of the chemical forms of iron (the speciation) circulating in and between cells is crucial to further understand the mechanisms of iron delivery to its final targets. Here we analyzed how iron is transported to the seeds by the chemical identification of iron complexes that are delivered to embryos, followed by the biochemical characterization of the transport of these complexes by the embryo, using the pea (Pisum sativum) as a model species. We have found that iron circulates as ferric complexes with citrate and malate (Fe(III)3Cit2Mal2, Fe(III)3Cit3Mal1, Fe(III)Cit2). Because dicotyledonous plants only transport ferrous iron, we checked whether embryos were capable of reducing iron of these complexes. Indeed, embryos did express a constitutively high ferric reduction activity. Surprisingly, iron(III) reduction is not catalyzed by the expected membrane-bound ferric reductase. Instead, embryos efflux high amounts of ascorbate that chemically reduce iron(III) from citrate-malate complexes. In vitro transport experiments on isolated embryos using radiolabeled (55)Fe demonstrated that this ascorbate-mediated reduction is an obligatory step for the uptake of iron(II). Moreover, the ascorbate efflux activity was also measured in Arabidopsis embryos, suggesting that this new iron transport system may be generic to dicotyledonous plants. Finally, in embryos of the ascorbate-deficient mutants vtc2-4, vtc5-1, and vtc5-2, the reducing activity and the iron concentration were reduced significantly. Taken together, our results identified a new iron transport mechanism in plants that could play a major role to control iron loading in seeds.
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Affiliation(s)
- Louis Grillet
- From the Laboratoire de Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, Centre National de la Recherche Scientifique (UMR5004), Institut National de la Recherche Agronomique, Université Montpellier II, Ecole Nationale Supérieure d'Agronomie, 34060 Montpellier Cedex 2, France and
| | - Laurent Ouerdane
- the Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux, Centre National de la Recherche Scientifique (UMR5254), Université de Pau et des Pays de l'Adour, 64063 Pau Cedex 9, France
| | - Paulina Flis
- the Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux, Centre National de la Recherche Scientifique (UMR5254), Université de Pau et des Pays de l'Adour, 64063 Pau Cedex 9, France
| | - Minh Thi Thanh Hoang
- From the Laboratoire de Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, Centre National de la Recherche Scientifique (UMR5004), Institut National de la Recherche Agronomique, Université Montpellier II, Ecole Nationale Supérieure d'Agronomie, 34060 Montpellier Cedex 2, France and
| | - Marie-Pierre Isaure
- the Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux, Centre National de la Recherche Scientifique (UMR5254), Université de Pau et des Pays de l'Adour, 64063 Pau Cedex 9, France
| | - Ryszard Lobinski
- the Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux, Centre National de la Recherche Scientifique (UMR5254), Université de Pau et des Pays de l'Adour, 64063 Pau Cedex 9, France
| | - Catherine Curie
- From the Laboratoire de Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, Centre National de la Recherche Scientifique (UMR5004), Institut National de la Recherche Agronomique, Université Montpellier II, Ecole Nationale Supérieure d'Agronomie, 34060 Montpellier Cedex 2, France and
| | - Stéphane Mari
- From the Laboratoire de Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes, Centre National de la Recherche Scientifique (UMR5004), Institut National de la Recherche Agronomique, Université Montpellier II, Ecole Nationale Supérieure d'Agronomie, 34060 Montpellier Cedex 2, France and
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