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Fasani E, Li M, Varotto C, Furini A, DalCorso G. Metal Detoxification in Land Plants: From Bryophytes to Vascular Plants. STATE of the Art and Opportunities. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11030237. [PMID: 35161218 PMCID: PMC8837986 DOI: 10.3390/plants11030237] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 05/05/2023]
Abstract
Potentially toxic elements are a widespread concern due to their increasing diffusion into the environment. To counteract this problem, the relationship between plants and metal(loid)s has been investigated in the last 30 years. In this field, research has mainly dealt with angiosperms, whereas plant clades that are lower in the evolutive scale have been somewhat overlooked. However, recent studies have revealed the potential of bryophytes, pteridophytes and gymnosperms in environmental sciences, either as suitable indicators of habitat health and elemental pollution or as efficient tools for the reclamation of degraded soils and waters. In this review, we summarize recent research on the interaction between plants and potentially toxic elements, considering all land plant clades. The focus is on plant applicability in the identification and restoration of polluted environments, as well as on the characterization of molecular mechanisms with a potential outlet in the engineering of element tolerance and accumulation.
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Affiliation(s)
- Elisa Fasani
- Department Biotechnology, University of Verona, Str. Le Grazie 15, 37131 Verona, Italy;
| | - Mingai Li
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all’ Adige, Italy; (M.L.); (C.V.)
| | - Claudio Varotto
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all’ Adige, Italy; (M.L.); (C.V.)
| | - Antonella Furini
- Department Biotechnology, University of Verona, Str. Le Grazie 15, 37131 Verona, Italy;
- Correspondence: (A.F.), (G.D.)
| | - Giovanni DalCorso
- Department Biotechnology, University of Verona, Str. Le Grazie 15, 37131 Verona, Italy;
- Correspondence: (A.F.), (G.D.)
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Đorđević B, Neděla V, Tihlaříková E, Trojan V, Havel L. Effects of copper and arsenic stress on the development of Norway spruce somatic embryos and their visualization with the environmental scanning electron microscope. N Biotechnol 2018; 48:35-43. [PMID: 29782934 DOI: 10.1016/j.nbt.2018.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 05/17/2018] [Accepted: 05/17/2018] [Indexed: 11/17/2022]
Abstract
Somatic embryogenesis is an important biotechnological technique which can be used in studies associated with environmental stress. Four embryogenic cell lines of Norway spruce were grown on media enriched with copper and arsenic in concentration ranges 50-500 μM and 10-50 μM, respectively. The effects were observed during subsequent stages of somatic embryogenesis, the characteristics evaluated being proliferation potential, average number of somatic embryos obtained per g/fresh weight, morphology of developed somatic embryos, metal uptake, and microanalysis of macro- and micronutrients uptake. Copper and arsenic at higher concentrations significantly reduced the growth of early somatic embryos. In almost all treatments, the cell line V-1-3 showed the best performance compared with the other lines tested. Environmental scanning electron microscopy was used to visualize and identify morphological abnormalities in the development of somatic embryos. Abnormalities observed were classified into several categories: meristemless somatic embryos, somatic embryos with disrupted meristem, reduced number of cotyledons, single cotyledon and fused cotyledons. With the application of a low temperature method for the environmental scanning electron microscope, samples were stabilized and whole meristems could be investigated in their native state. As far as we are aware, this is the first report of the effect of copper and arsenic during the process of somatic embryogenesis and the first to evaluate the content of macro and micronutrients uptake in Norway spruce.
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Affiliation(s)
- Biljana Đorđević
- Department of Plant Biology, Mendel University in Brno, Zemědělská 1, Brno 613 00, Czech Republic.
| | - Vilém Neděla
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, Brno 612 64, Czech Republic
| | - Eva Tihlaříková
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, Brno 612 64, Czech Republic
| | - Václav Trojan
- Department of Plant Biology, Mendel University in Brno, Zemědělská 1, Brno 613 00, Czech Republic
| | - Ladislav Havel
- Department of Plant Biology, Mendel University in Brno, Zemědělská 1, Brno 613 00, Czech Republic
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Bonet A, Lelu-Walter MA, Faugeron C, Gloaguen V, Saladin G. Physiological responses of the hybrid larch (Larix × eurolepis Henry) to cadmium exposure and distribution of cadmium in plantlets. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:8617-8626. [PMID: 26797952 DOI: 10.1007/s11356-016-6094-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 01/11/2016] [Indexed: 06/05/2023]
Abstract
Phytoextraction of Cd is a growing biotechnology although we currently know few Cd hyperaccumulators, i.e., plant species able to accumulate at least 0.1 mg Cd g(-1) dry weight in aerial organs. Owing their deep root system and high biomass, trees are more and more preferred to herbaceous species for phytoextraction. Assuming that conifers could be relevant models under cold climates, we investigated cadmium tolerance of the hybrid larch Larix × eurolepis Henry (Larix decidua × Larix kaempferi) and the efficiency of this species to store this metal. In vitro grown larches were chosen in order to reduce time of exposure and to more rapidly evaluate their potential efficiency to accumulate Cd. One-month-old plantlets were exposed for 2 and 4 weeks to 250 and 500 μM Cd. Results showed that they tolerated a 4-week exposure to 250 μM Cd, whereas the content of photosynthetic pigment strongly dropped in plantlets growing in the presence of 500 μM Cd. In the presence of 250 μM Cd, shoot growth slightly decreased but photosynthetic pigment and total soluble carbohydrate contents were not modified and no lipid peroxidation was detected. In addition, these plantlets accumulated proline, particularly in shoots (two to three times more than control). In roots, Cd concentration in the intracellular fraction was always higher than in the cell wall fraction contrary to shoots where Cd concentration in the cell wall fraction increased with time and Cd concentration in the medium. In shoots, Cd concentration was lower than in roots with a ratio of 0.2 after 4 weeks of exposure but stayed around 0.2 mg g(-1) dry weight, thus a value higher than the threshold requested for Cd hyperaccumulators. Hybrid larch would thus be a relevant candidate for field test of Cd phytoextraction.
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Affiliation(s)
- Amandine Bonet
- Laboratoire de Chimie des Substances Naturelles (LCSN EA 1069), Université de Limoges, Faculté des Sciences et Techniques, 123 avenue Albert Thomas, 87060, Limoges Cedex, France
| | - Marie-Anne Lelu-Walter
- INRA, UR 0588 Unité Amélioration, Génétique et Physiologie Forestières, 2163 Avenue de la Pomme de pin CS 4001, Ardon, 45075, Orléans Cedex 2, France
| | - Céline Faugeron
- Laboratoire de Chimie des Substances Naturelles (LCSN EA 1069), Université de Limoges, Faculté des Sciences et Techniques, 123 avenue Albert Thomas, 87060, Limoges Cedex, France
| | - Vincent Gloaguen
- Laboratoire de Chimie des Substances Naturelles (LCSN EA 1069), Université de Limoges, Faculté des Sciences et Techniques, 123 avenue Albert Thomas, 87060, Limoges Cedex, France
| | - Gaëlle Saladin
- Laboratoire de Chimie des Substances Naturelles (LCSN EA 1069), Université de Limoges, Faculté des Sciences et Techniques, 123 avenue Albert Thomas, 87060, Limoges Cedex, France.
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Bonet A, Pascaud G, Faugeron C, Soubrand M, Joussein E, Gloaguen V, Saladin G. Douglas fir (pseudotsuga menziesii) plantlets responses to as, PB, and sb-contaminated soils from former mines. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:559-566. [PMID: 26361254 DOI: 10.1080/15226514.2015.1086297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Phytoremediation of metalloids by conifers is not widely studied although they may be relevant for several contaminated sites, especially those located in cold areas and sometimes under dry climates. Here, seeds of Douglas fir were sown in greenhouse on three soils collected in two French former mines: a gold mine (soils L1 and L2) and a lead and silver mine (soil P). These soils are highly contaminated by Pb, As, and Sb at different concentrations. Plants were harvested after ten weeks. Growth parameters, primary metabolite content, and shoot and root ionomes were determined. Douglas firs grown on the soils L1 and P had a lower biomass than controls and a higher oxidation status whereas those grown on the soil L2 exhibited a more developed root system and only slight modifications of carbon and nitrogen nutrition. Based on trace element (TE) concentrations in shoots and roots and their translocation factor (TF), Douglas fir could be a relevant candidate for As phytoextraction (0.8 g. kg(-1) dry weight in shoots and a TF of 1.1) and may be used to phytostabilize Pb and Sb (8.8 g and 127 mg. kg(-1) in roots for Pb and Sb, respectively, and TF lower than 0.1).
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Affiliation(s)
- Amandine Bonet
- a Laboratoire de Chimie des Substances Naturelles (LCSN EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
| | - Grégoire Pascaud
- b Groupement de Recherche Eau Sol Environnement (GRESE EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
| | - Céline Faugeron
- a Laboratoire de Chimie des Substances Naturelles (LCSN EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
| | - Marilyne Soubrand
- b Groupement de Recherche Eau Sol Environnement (GRESE EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
| | - Emmanuel Joussein
- b Groupement de Recherche Eau Sol Environnement (GRESE EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
| | - Vincent Gloaguen
- a Laboratoire de Chimie des Substances Naturelles (LCSN EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
| | - Gaëlle Saladin
- a Laboratoire de Chimie des Substances Naturelles (LCSN EA), Université de Limoges, Faculté des Sciences et Techniques , Limoges Cedex , France
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Astier C, Gloaguen V, Faugeron C. Phytoremediation of cadmium-contaminated soils by young Douglas fir trees: effects of cadmium exposure on cell wall composition. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2014; 16:790-803. [PMID: 24933885 DOI: 10.1080/15226514.2013.856849] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Douglas fir trees grown on an artificially Cd-contaminated soil, can tolerate this trace element (up to 68 mg/kg in soil) during several months. Most of the absorbed Cd is retained in roots (25 mg/kg DM), but transfer to aerial part is also effective. Showing the highest content, up to 6 mg/kg DM, among all the aboveground parts, barks seem to be a preferred storage compartment. However, the transfer factor is quite low, about 0.3. Another objective of this study was to compare the cell wall components of trees exposed to increasing Cd amounts in soil. A decrease in lignin and an increase in pectin contents were observed in response to increasing soil cadmium concentration. A concurrent reduction in methyl-esterification of pectin suggests than the structure of this major binding site could therefore be modified as a reaction to cadmium contamination. Future prospects will focus on the modulation of pectin composition in response to Cd exposure.
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