Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils
The use of native plants for reforestation and/or remediation in areas contaminated by mining is a technique with low implantation and maintenance costs. The success of this practice depends on the plant species and geochemical processes at the soil–plant interface (e.g., rhizosphere). This study ev...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/2/130 |
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| author | Daniel Pontes de Oliveira Hermano Melo Queiroz Fabio Perlatti Amanda Duim Ferreira Verónica Asensio Gabriel Nuto Nóbrega Xosé Luis Otero Tiago Osório Ferreira |
| author_facet | Daniel Pontes de Oliveira Hermano Melo Queiroz Fabio Perlatti Amanda Duim Ferreira Verónica Asensio Gabriel Nuto Nóbrega Xosé Luis Otero Tiago Osório Ferreira |
| author_sort | Daniel Pontes de Oliveira |
| collection | DOAJ |
| description | The use of native plants for reforestation and/or remediation in areas contaminated by mining is a technique with low implantation and maintenance costs. The success of this practice depends on the plant species and geochemical processes at the soil–plant interface (e.g., rhizosphere). This study evaluated the potential of spontaneous species for mobilizing and altering mineral and metal dynamics in the rhizosphere of Cu-rich soils resulting from the abandoned Pedra Verde mine in NE Brazil. Rhizosphere and bulk soil samples were collected from five shrubby/arboreal species. The pH, organic matter content, Cu fractionation, mineralogical characterization, and Cu content in the leaves and roots of all studied species were determined. In addition, the bioaccumulation factor (BCF) and translocation factor (TF) were used to evaluate the potential of these species for Cu hyperaccumulation. The Cu concentration in leaf plant tissues varied from 18 to 34 mg kg<sup>−1</sup>, and all plants presented TF and BCF < 1, indicating that the species were not Cu hyperaccumulators. However, the root exudates induce mineral dissolution, indicating potential Cu accumulation in the roots (from 36 to 249 mg kg<sup>−1</sup>). <i>Combretum aff. pisoniodes</i> Taub was the species with the greatest potential for decreasing Cu bioavailability and phytostabilization. Our findings indicate the potential of native Brazilian plants for growth in Cu-contaminated soil. These findings may be used for reforestation programs. |
| first_indexed | 2024-03-09T21:22:24Z |
| format | Article |
| id | doaj.art-1348314031a84d0e92dd00b6dae382d7 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T21:22:24Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-1348314031a84d0e92dd00b6dae382d72023-11-23T21:17:19ZengMDPI AGMinerals2075-163X2022-01-0112213010.3390/min12020130Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted SoilsDaniel Pontes de Oliveira0Hermano Melo Queiroz1Fabio Perlatti2Amanda Duim Ferreira3Verónica Asensio4Gabriel Nuto Nóbrega5Xosé Luis Otero6Tiago Osório Ferreira7Graduate Course of Ecology and Natural Resources, Department of Biology, Federal University of Ceará (UFC), Building 906, Fortaleza 60455-760, CE, BrazilLuiz de Queiroz College of Agriculture, University of São Paulo (ESALQ-USP), Piracicaba 13418-900, SP, BrazilLuiz de Queiroz College of Agriculture, University of São Paulo (ESALQ-USP), Piracicaba 13418-900, SP, BrazilLuiz de Queiroz College of Agriculture, University of São Paulo (ESALQ-USP), Piracicaba 13418-900, SP, BrazilEdafotec SL, 36201 Vigo, SpainGraduate Program in Earth Sciences (Geochemistry), Department of Geochemistry, Federal Fluminense University, Niterói 24020-141, RJ, BrazilCRETUS, Department of Soil Science and Agricultural Chemistry, School of Biology, University of Santiago de Compostela, 15705 Santiago de Compostela, SpainLuiz de Queiroz College of Agriculture, University of São Paulo (ESALQ-USP), Piracicaba 13418-900, SP, BrazilThe use of native plants for reforestation and/or remediation in areas contaminated by mining is a technique with low implantation and maintenance costs. The success of this practice depends on the plant species and geochemical processes at the soil–plant interface (e.g., rhizosphere). This study evaluated the potential of spontaneous species for mobilizing and altering mineral and metal dynamics in the rhizosphere of Cu-rich soils resulting from the abandoned Pedra Verde mine in NE Brazil. Rhizosphere and bulk soil samples were collected from five shrubby/arboreal species. The pH, organic matter content, Cu fractionation, mineralogical characterization, and Cu content in the leaves and roots of all studied species were determined. In addition, the bioaccumulation factor (BCF) and translocation factor (TF) were used to evaluate the potential of these species for Cu hyperaccumulation. The Cu concentration in leaf plant tissues varied from 18 to 34 mg kg<sup>−1</sup>, and all plants presented TF and BCF < 1, indicating that the species were not Cu hyperaccumulators. However, the root exudates induce mineral dissolution, indicating potential Cu accumulation in the roots (from 36 to 249 mg kg<sup>−1</sup>). <i>Combretum aff. pisoniodes</i> Taub was the species with the greatest potential for decreasing Cu bioavailability and phytostabilization. Our findings indicate the potential of native Brazilian plants for growth in Cu-contaminated soil. These findings may be used for reforestation programs.https://www.mdpi.com/2075-163X/12/2/130Cu biogeochemistryabandoned mine soilsphytoremediation |
| spellingShingle | Daniel Pontes de Oliveira Hermano Melo Queiroz Fabio Perlatti Amanda Duim Ferreira Verónica Asensio Gabriel Nuto Nóbrega Xosé Luis Otero Tiago Osório Ferreira Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils Minerals Cu biogeochemistry abandoned mine soils phytoremediation |
| title | Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils |
| title_full | Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils |
| title_fullStr | Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils |
| title_full_unstemmed | Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils |
| title_short | Cu Dynamics in the Rhizosphere of Native Tropical Species: Assessing the Potential for Phytostabilization in Mining-Impacted Soils |
| title_sort | cu dynamics in the rhizosphere of native tropical species assessing the potential for phytostabilization in mining impacted soils |
| topic | Cu biogeochemistry abandoned mine soils phytoremediation |
| url | https://www.mdpi.com/2075-163X/12/2/130 |
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