Prosopis laevigata and Acacia farnesiana in association with Rhizobium sp. remove copper from soil

•Cu affects the development of P. laevigata and A. farnesiana at a concentration greater than that at which it affects other plants.•Rhizobium sp. provides better conditions for both P. laevigata and A. farnesiana to better tolerate the stress produced by the presence of Cu.•Rhizobium sp. facilitate...

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Bibliographic Details
Published in:South African journal of botany 2022-12, Vol.151, p.417-424
Main Authors: Garcidueñas-Piña, Cristina, Arellano-Martínez, Eduardo Josué, Morales-Garcidueñas, Luis Hernán, Gómez Rangel, Mónica del Carmen, Rubio-Franchini, Isidoro, Morales-Domínguez, José Francisco
Format: Article
Language:English
Subjects:
Bioaugmentation
Contaminated soil
Heavy metals
Huizache
Legume
Mesquite
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Summary:•Cu affects the development of P. laevigata and A. farnesiana at a concentration greater than that at which it affects other plants.•Rhizobium sp. provides better conditions for both P. laevigata and A. farnesiana to better tolerate the stress produced by the presence of Cu.•Rhizobium sp. facilitates Cu to accumulate in the root of P. laevigata and A. farnesiana more than in the aerial part of the plants.•P. laevigata cultivated in the presence of Rhizobium has the potential to be used in phytoremediation of soil contaminated with Cu. Industrial and agricultural activities have increased the amounts of heavy metals on the Earth's crust, risking organisms and ecosystem stability. Phytoremediation is a technique to remove heavy metals from contaminated sites. Soil phytoremediation involves many processes in which, not only plants participate, but also microorganisms present in the rhizosphere. Legumes form symbiotic associations with rhizobacteria that promote plant development. Acacia farnesiana and Prosopis laevigata are two species of the legume family with suitable characteristics for phytoremediation. In this work, we found that both A. farnesiana and P. laevigata tolerate high concentrations of copper, and can remove this metal from the soil. P. laevigata gave better results than A. farnesiana. P. laevigata inoculated with Rhizobium sp. showed greater copper bioaccumulation in the root, while the plants without these bacteria presented more copper accumulation in the aerial parts of the plants.
ISSN:0254-6299
1727-9321
DOI:10.1016/j.sajb.2022.09.019