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Salehi A, Shariat A. Comparative performance of Populus spp. and Salix spp. for growth, nutrition, and heavy metal uptake in a wastewater hydroponic system. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1369-1378. [PMID: 38415612 DOI: 10.1080/15226514.2024.2321597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
This research aimed to ascertain the growth, biomass, and phytoremediation capacity of poplars and willow cultivated using wastewater in a hydroponic system. The cuttings were exposed to two water treatments for eight weeks: (1) tap water supply with 1/4 strength Hoagland's solution (TW) as a control and (2) urban raw wastewater with 1/4 strength Hoagland's solution (WW) in a completely randomized experimental design and growth parameters and nutrient and heavy metal content distribution in various plant tissues were assessed. Our results suggest that compared with the TW, seven studied species/clones revealed an increase in growth and biomass parameters (stem height by 16.4%, and root, shoot, and total biomass by 37.3%, 26.9%, and 29.3%, respectively) caused by WW treatment, except the root length and stem diameter that remained the same under two water treatments. Poplars and willow showed a remarkable variability in growth and biomass parameters, with the highest stem diameter, stem height, and root, shoot, and total biomass in Populus nigra L. 62.154. Expression of growth responses to WW treatment with tolerance indices (Tis) indicated the tested poplars and willow as highly tolerant (Ti >100%) with no significant differences among them based on this index. Plant analysis showed that WW treatment increased the concentrations of nutrients and heavy metals in the shoots and roots. Overall, under both water treatments, the capability of the tested species/clones to uptake and accumulate micro-nutrients (except copper (Cu) in shoots) and heavy metals (except chromium (Cr) in shoots) in the plant tissues varied noticeably. However, for all tested plants, the roots had higher concentrations of micro-nutrients (iron (Fe), zinc (Zn), and Cu concentrations in the roots were about 36.8%, 107.6%, and 30.1% of that in the shoots, respectively) and heavy metals (nickel (Ni), Cr, and lead (Pb) concentrations in the roots were about 115.3%, 344.2%, and 198.9% of that in the shoots, respectively), suggesting their capability for micro-nutrients and heavy metals rhizofiltration. Concerning obtained results under hydroponic culture, it can be concluded that these poplars and willow might be promising candidates for wastewater applications. However, data obtained by a hydroponic system need to be confirmed in pot and field experiments.
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Affiliation(s)
- Azadeh Salehi
- Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
| | - Anahita Shariat
- Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
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DalCorso G, Martini F, Fasani E, Manara A, Visioli G, Furini A. Enhancement of Zn tolerance and accumulation in plants mediated by the expression of Saccharomyces cerevisiae vacuolar transporter ZRC1. PLANTA 2021; 253:117. [PMID: 33956221 PMCID: PMC8102461 DOI: 10.1007/s00425-021-03634-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/24/2021] [Indexed: 05/30/2023]
Abstract
Transgenic Arabidopsis thaliana and Populus alba plants overexpressing the zinc transporter ScZRC1 in shoots exhibit Zn tolerance. Increased Zn concentrations were observed in shoots of P. alba, a species suitable for phytoremediation. Genetic engineering of plants for phytoremediation is worth to consider if genes leading to heavy metal accumulation and tolerance are expressed in high biomass producing plants. The Saccharomyces cerevisiae ZRC1 gene encodes a zinc transporter which is primarily involved in the uptake of Zn into the vacuole. The ZRC1 gene was expressed in the model species A. thaliana and P. alba (cv. Villafranca). Both species were transformed with constructs carrying ScZRC1 under the control of either the CaMV35S promoter for constitutive expression or the active promoter region of the tobacco Rubisco small subunit (pRbcS) to limit the expression to the above-ground tissues. In hydroponic cultures, A. thaliana and poplar ScZRC1-expressing plants accumulated more Zn in vegetative tissues and were more tolerant than untransformed plants. No differences were found between plants carrying the CaMV35::ScZRC1 or pRbcS::ScZRC1 constructs. The higher Zn accumulation in transgenic plants was accompanied by an increased superoxide dismutase (SOD) activity, indicating the activation of defense mechanisms to prevent cellular damage. In the presence of cadmium in addition to Zn, plants did not show symptoms of metal toxicity, neither in hydroponic cultures nor in soil. Zn accumulation increased in shoots, while no differences were observed for Cd accumulation, in comparison to control plants. These data suggest that ectopic expression of ScZRC1 can increase the potential of poplar for the remediation of Zn-polluted soils, although further tests are required to assay its application in remediating multimetal polluted soils.
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Affiliation(s)
- Giovanni DalCorso
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Flavio Martini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Elisa Fasani
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Anna Manara
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Giovanna Visioli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Antonella Furini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy.
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Simiele M, Lebrun M, Miard F, Trupiano D, Poupart P, Forestier O, Scippa GS, Bourgerie S, Morabito D. Assisted phytoremediation of a former mine soil using biochar and iron sulphate: Effects on As soil immobilization and accumulation in three Salicaceae species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136203. [PMID: 31926409 DOI: 10.1016/j.scitotenv.2019.136203] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
Metal(loid) accumulation in soils, is of increasing concern because of the potential human health risks. Therefore, metal(loid) contaminated sites need rehabilitation. It is becoming increasingly popular to use phytoremediation methods for the reclamation of sites containing metal(loid)s. However, plant establishment and growth on contaminated soils can be difficult due to high metal(loid) concentrations and poor fertility conditions. Consequently, amendments, like biochar and iron sulphate, must be applied. Biochar, obtained from plant biomass or animal wastes pyrolyzed under minimal oxygen supply, showed beneficial effects on soil properties and plant growth. Iron sulphate can effectively immobilize anions, thus mitigating metal(loid) toxicity and hence promoting plant development. This study aimed to assess the effect of two different modalities of biochar amendment application (top third of the tube and all tube height) combined with iron sulphate addition on the physico-chemical properties of a mining polluted soil and the growth and metal(loid) uptake of three Salicaceae species. A 1.5 year mesocosm experiment under field condition was conducted using a former tin mine contaminated by arsenic, amended with biochar and iron sulphate and vegetated with three Salicaceae species. Results showed that the combination of biochar and iron sulphate improved soil characteristics by increasing pH and electrical conductivity and reducing soil pore water metal(loid) concentrations. Between the two biochar application methods, the addition of biochar on the all tube height showed better results. But for such contaminated soil, biochar, in combination with iron sulphate, had no positive effect on plant growth, for all species tested and especially when incorporating on the top third of the tube. Finally, S. purpurea presented high root metal(loid) concentrations associated to the better growth compared to P. euramericana and S. viminalis, making it a better candidate for phytostabilization of the studied soil.
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Affiliation(s)
- Melissa Simiele
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090 Pesche, Italy
| | - Manhattan Lebrun
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090 Pesche, Italy; INRA USC1328, LBLGC EA1207, rue de Chartres, University of Orleans, BP 6759, 45067 Orléans Cedex 2, France
| | - Florie Miard
- INRA USC1328, LBLGC EA1207, rue de Chartres, University of Orleans, BP 6759, 45067 Orléans Cedex 2, France
| | - Dalila Trupiano
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090 Pesche, Italy
| | - Philippe Poupart
- Office Nationale des Forêts, Pôle national des ressources génétiques forestières, 44290 Guéméné-Penfao, France
| | - Olivier Forestier
- Office Nationale des Forêts, Pôle national des ressources génétiques forestières, 44290 Guéméné-Penfao, France
| | - Gabriella S Scippa
- Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, 86090 Pesche, Italy
| | - Sylvain Bourgerie
- INRA USC1328, LBLGC EA1207, rue de Chartres, University of Orleans, BP 6759, 45067 Orléans Cedex 2, France
| | - Domenico Morabito
- INRA USC1328, LBLGC EA1207, rue de Chartres, University of Orleans, BP 6759, 45067 Orléans Cedex 2, France.
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Chalot M, Girardclos O, Ciadamidaro L, Zappelini C, Yung L, Durand A, Pfendler S, Lamy I, Driget V, Blaudez D. Poplar rotation coppice at a trace element-contaminated phytomanagement site: A 10-year study revealing biomass production, element export and impact on extractable elements. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134260. [PMID: 31683219 DOI: 10.1016/j.scitotenv.2019.134260] [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: 07/28/2019] [Revised: 09/01/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Growing lignocellulosic crops on marginal lands could compose a substantial proportion of future energy resources. The potential of poplar was explored, by devising a field trial of two hectares in 2007 in a metal-contaminated site to quantify the genotypic variation in the growth traits of 14 poplar genotypes grown in short-rotation coppice and to assess element transfer and export by individual genotypes. Our data led us to conclusions about the genotypic variations in poplar growth on a moderately contaminated site, with the Vesten genotype being the most productive. This genotype also accumulated the least amounts of trace elements, whereas the Trichobel genotype accumulated up to 170 mg Zn kg-1 DW in the branches, with large variation being exhibited among the genotypes for trace element (TE) accumulation. Soil element depletion occurred for a range of TEs, whereas the soil content of major nutrients and the pH remained unchanged or slightly increased after 10 years of poplar growth. The higher TE content of bark tissues compared with the wood and the higher proportion of bark in branches compared with the wood led us to recommend that only stem wood be harvested, instead of the whole tree, which will enable a reduction in the risks encountered with TE-enriched biomass in the valorization process.
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Affiliation(s)
- Michel Chalot
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France; Université de Lorraine, F-54000 Nancy, France.
| | - Olivier Girardclos
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Lisa Ciadamidaro
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Cyril Zappelini
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Loic Yung
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Alexis Durand
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Stéphane Pfendler
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Isabelle Lamy
- INRA, AgroParisTech, UMR1402 ECOSYS, Ecotoxicology division, F-78026 Versailles cedex, France
| | - Vincent Driget
- Université de Bourgogne Franche-Comté, CNRS, Laboratoire Chrono-environnement, F-25250 Montbéliard, France
| | - Damien Blaudez
- Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France
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Lebrun M, Miard F, Nandillon R, Léger JC, Hattab-Hambli N, Scippa GS, Bourgerie S, Morabito D. Assisted phytostabilization of a multicontaminated mine technosol using biochar amendment: Early stage evaluation of biochar feedstock and particle size effects on As and Pb accumulation of two Salicaceae species (Salix viminalis and Populus euramericana). CHEMOSPHERE 2018; 194:316-326. [PMID: 29220748 DOI: 10.1016/j.chemosphere.2017.11.113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/23/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
Soil contamination by metal(loid)s is one of the most important environmental problem. It leads to loss of environment biodiversity and soil functions and can have harmful effects on human health. Therefore, contaminated soils could be remediated, using phytoremediation. Indeed, plant growth will improve soil conditions while accumulating metal(loid)s and modifying their mobility. However, due to the poor fertility and high metal(loid)s levels of these soils, amendments, like biochar, has to be applied. This study was performed on a former mine technosol contaminated by As and Pb and aimed to study (i) the effect of biochar on soil physico-chemical properties and plant phytostabilization potential (ii) biochar feedstock and particle size effects. In this goal, a mesocosm experiment was set up using four different biochars, obtained from two feedstocks (lightwood and pinewood) and harboring two particle sizes (inf. 0.1 mm and 0.2-0.4 mm) and two Salicaceae species. Soil and soil pore water physico-chemical properties as well as plant growth and metal(loid)s distribution were assessed. The results showed that biochar was efficient in improving soil physico-chemical properties and reducing Pb soil pore water concentrations. This amelioration allowed plant growth and increased dry weight production of both species. Regarding metal(loid)s distribution, willow and poplar showed an As and Pb accumulation in roots and low translocation towards edible parts, i.e stems and leaves, which shows a phytostabilization potential. Finally, the 2 biochar parameters, feedstock and particle size, only affected soil and soil pore water physico-chemical properties while having no effect on plant growth.
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Affiliation(s)
- Manhattan Lebrun
- University of Orleans, INRA USC1328, LBLGC EA 1207, rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France; Università degli Studi del Molise, Dipartimento di Bioscienze e Territorio, 86090, Pesche, Italy
| | - Florie Miard
- University of Orleans, INRA USC1328, LBLGC EA 1207, rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France
| | - Romain Nandillon
- University of Orleans, INRA USC1328, LBLGC EA 1207, rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France
| | | | - Nour Hattab-Hambli
- University of Orleans, INRA USC1328, LBLGC EA 1207, rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France
| | - Gabriella S Scippa
- Università degli Studi del Molise, Dipartimento di Bioscienze e Territorio, 86090, Pesche, Italy
| | - Sylvain Bourgerie
- University of Orleans, INRA USC1328, LBLGC EA 1207, rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France
| | - Domenico Morabito
- University of Orleans, INRA USC1328, LBLGC EA 1207, rue de Chartres, BP 6759, 45067, Orléans Cedex 2, France.
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Yang W, Zhao F, Ding Z, Shohag MJI, Wang Y, Zhang X, Zhu Z, Yang X. Screening of 19 Salix clones in effective phytofiltration potentials of manganese, zinc and copper in pilot-scale wetlands. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:1275-1283. [PMID: 30666899 DOI: 10.1080/15226514.2014.898020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Willows (Salix spp.) have been regarded as one of interesting plants for phytofiltration of water contaminated with trace metals. In this paper, the clonal differences in tolerance and phytofiltration capacity of mixed metals (Mn, Zn, and Cu) were evaluated in greenhouse pilot-scale wetlands with a floating-support culture system. The results showed that broad clonal variations of biomass accumulation in response to mixed metals ranging from growth inhibition to stimulation. Clones differed in tolerance to multi-metals by tolerance index (TI) based on shoot and root biomass. We also found that wide variations in uptake and accumulation of three metals, which was related to species/clones and metal species. The willows showed high Mn and Zn translocation capacity from roots to leaves suitable for phytoextraction. In contrast, all clones had poor Cu translocation capacity, and Cu mainly retained in roots suitable for rhizofiltration. Among all Salix clones, clones SM30 and J903 had large phytofiltration potential for three metals with their high tolerance.
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Affiliation(s)
- Weidong Yang
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
| | - Fengliang Zhao
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
- b Ministry of Agriculture Danzhou Scientific Observing and Experimental Station of Agro-Environment, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences (CATAS) , Danzhou , China
| | - Zheli Ding
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
- c Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS) , Haikou , China
| | - Md Jahidul Isalm Shohag
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
| | - Yuyan Wang
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
- d College of Agricultural Economy and Technology, Jiujiang Vocational University , Jiujiang , China
| | - Xincheng Zhang
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
| | - Zhiqiang Zhu
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
- e College of Agriculture, Hainan University , Haikou , China
| | - Xiaoe Yang
- a Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China
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Pietrini F, Di Baccio D, Iori V, Veliksar S, Lemanova N, Juškaitė L, Maruška A, Zacchini M. Investigation on metal tolerance and phytoremoval activity in the poplar hybrid clone "Monviso" under Cu-spiked water: Potential use for wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 592:412-418. [PMID: 28334619 DOI: 10.1016/j.scitotenv.2017.03.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/10/2017] [Accepted: 03/10/2017] [Indexed: 06/06/2023]
Abstract
A serious concern for the environmental and human health is represented by the increasing copper (Cu) occurrence in agricultural soils and waters, because of the possible food contamination and bioaugmentation along the trophic chain. The request for the decontamination of different matrices with an environmentally sustainable technology as the phytoremediation should be addressed by selecting plant materials with improved pollutant tolerance and removal capability. With this purpose, plants of the hybrid poplar clone "Monviso" (Populus×generosa A. Henry×P. nigra L.) were grown in growth chamber under hydroponics and exposed to excess Cu concentrations (T1, 75μM Cu; T2, 150μM Cu), selected as about 5 and 10 times higher than those allowed by the Italian regulation on water use. Results evidenced a notable Cu tolerance by poplar plants, particularly at the lowest Cu concentration. At organ level, the root system was the most affected by Cu treatment, especially in T2-exposed plants. Copper determinations revealed that the metal was mostly bioaccumulated in the roots, with a limited amount reaching the shoots. Chlorophyll content and fluorescence analyses confirmed the visible symptoms in leaves, highlighting a good physiological status in T1-exposed plants. Contrarily, an impairment of the main processes associated to photosynthesis was observed in T2-exposed plants also by gas exchange measurements. Remarkably, the Cu content analysis of the spiked water solutions revealed that poplar plants succeeded in removing almost the 50% of the total Cu amount added. These results strengthen the evidence that poplar plants represent a useful eco-friendly bio-tool for the decontamination of metal polluted waters.
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Affiliation(s)
- Fabrizio Pietrini
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy
| | - Daniela Di Baccio
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy
| | - Valentina Iori
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy
| | - Sofia Veliksar
- Institute of Genetics, Physiology and Plant Protection, Academy of Science of Moldova, Chisinau, Moldova
| | - Natalia Lemanova
- Institute of Genetics, Physiology and Plant Protection, Academy of Science of Moldova, Chisinau, Moldova
| | - Liudvika Juškaitė
- Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Audrius Maruška
- Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Massimo Zacchini
- Institute of Agroenvironmental and Forest Biology, National Research Council, Monterotondo (RM), Italy.
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Lacercat-Didier L, Berthelot C, Foulon J, Errard A, Martino E, Chalot M, Blaudez D. New mutualistic fungal endophytes isolated from poplar roots display high metal tolerance. MYCORRHIZA 2016; 26:657-71. [PMID: 27113586 DOI: 10.1007/s00572-016-0699-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 04/08/2016] [Indexed: 05/21/2023]
Abstract
This study aimed to isolate, identify, and characterise metal-tolerant fungi colonising poplar roots at a metal-contaminated phytoremediation site. Poplar roots were colonised by arbuscular mycorrhizal, ectomycorrhizal, and endophytic fungi, and the species were determined by ITS molecular analyses. Eight different isolates were successfully isolated into pure culture. Three isolates belonging to the Helotiales (P02, P06) and the Serendipita vermifera species (P04) were highly tolerant to metals (Cd, Zn, Pb, and Cu) compared to the mycorrhizal Hebeloma isolates. The three isolates degraded complex carbohydrates, such as xylan and cellulose, indicating that they could partially degrade root cell walls and penetrate into cells. This hypothesis was confirmed by further in vitro re-synthesis experiments, which showed that the three isolates colonised root tissues of poplar plantlets whereas two of them formed microsclerotia-like structures. Taken together, these results suggest an endophytic lifestyle of these isolates. This is the first evidence of S. vermifera as a root endophyte of poplar. A new endophytic putative species belonging to the Helotiales and closely related to Leohumicola is also reported. Interestingly, and when compared to mock-inoculated plants, both P06 and P04 isolates increased the number of root tips of inoculated poplar plantlets in vitro. Moreover, the S. vermifera P04 isolate also increased the shoot biomass. The results are discussed in relation to the potential use of endophytic strains for tree-based phytoremediation of metal-contaminated sites.
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Affiliation(s)
- Laurence Lacercat-Didier
- Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS/Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, F-54506, Vandoeuvre-les-Nancy, France
| | - Charlotte Berthelot
- Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS/Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, F-54506, Vandoeuvre-les-Nancy, France
| | - Julie Foulon
- Laboratoire Chrono-Environnement, UMR 6249 CNRS/Université de Bourgogne Franche-Comté, Pôle Universitaire du Pays de Montbéliard, 4 place Tharradin, BP 71427, F-25211, Montbéliard, France
| | - Audrey Errard
- Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS/Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, F-54506, Vandoeuvre-les-Nancy, France
| | - Elena Martino
- Department of Life Sciences and Systems Biology, University of Torino, Viale Mattioli 25, 10125, Turin, Italy
| | - Michel Chalot
- Laboratoire Chrono-Environnement, UMR 6249 CNRS/Université de Bourgogne Franche-Comté, Pôle Universitaire du Pays de Montbéliard, 4 place Tharradin, BP 71427, F-25211, Montbéliard, France
- Faculté des Sciences et Technologies, Université de Lorraine, BP 70239, F-54506, Vandoeuvre-les-Nancy, France
| | - Damien Blaudez
- Laboratoire Interdisciplinaire des Environnements Continentaux, UMR 7360 CNRS/Université de Lorraine, Faculté des Sciences et Technologies, BP 70239, F-54506, Vandoeuvre-les-Nancy, France.
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Baldantoni D, Cicatelli A, Bellino A, Castiglione S. Different behaviours in phytoremediation capacity of two heavy metal tolerant poplar clones in relation to iron and other trace elements. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2014; 146:94-99. [PMID: 25163599 DOI: 10.1016/j.jenvman.2014.07.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Revised: 07/23/2014] [Accepted: 07/30/2014] [Indexed: 05/08/2023]
Abstract
Plant biodiversity and intra-population genetic variability have not yet been properly exploited in the framework of phytoremediation and soil reclamation. For this reason, iron and other metal accumulation capacity of two Cu and Zn tolerant poplar clones, namely AL22 (Populus alba L.) and N12 (Populus nigra L.), was investigated in a pot experiment. Cuttings of the two clones were planted in iron rich soil collected from an urban-industrial area. Concentrations of Cd, Cu, Fe, Pb and Zn were analysed in leaves (at different times), as well as in stems and in roots (at the end of the experiment), both in control plants and in plants grown on a soil whose Fe availability was artificially enhanced. Results showed that Cd and Zn were preferentially accumulated in leaves, whereas Cu, Fe and Pb were mainly accumulated in roots. The main differences in metal accumulation between clones were related to Cd (about tenfold higher concentrations in N12) and Cu (higher concentrations in AL22). Once soil Fe availability was enhanced, the uptake and accumulation of all metals declined, with the exception of Fe at the first sampling time in AL22 leaves. The different behaviour of the two poplar clones suggests that a thoughtful choice should be made for their use in relation to soil heavy metal remediation.
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Affiliation(s)
- Daniela Baldantoni
- Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
| | - Angela Cicatelli
- Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
| | - Alessandro Bellino
- Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
| | - Stefano Castiglione
- Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
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