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Lonchocarpus cultratus, a Brazilian savanna tree, endures high soil Pb levels.
Environ Sci Pollut Res Int. 2021 Sep; 28(36):50931-50940.ES

Abstract

Industrial revolution markedly increased the environmental contamination by different pollutants, which include the metal lead (Pb). The phytoremediation potential of native species from tropical regions is little known, especially for woody plants. The present study aimed to evaluate the performance of Lonchocarpus cultratus (Fabaceae), a tree species from the Brazilian savanna, grown in soil that was artificially contaminated with increasing Pb concentrations (control and 4 Pb treatments, 56, 120, 180, and 292 mg kg-1) for 6 months. The biomass of L. cultratus was not depressed by exposure to Pb, despite the high accumulation of this metal (up to 7421.23 μg plant-1), indicating a high plant tolerance to this trace metal. Lead was mainly accumulated in roots (from 67 to 99%), suggesting that the low root-to-shoot Pb translocation is a plant strategy to avoid Pb-induced damages in photosynthetic tissues. Accordingly, the content of chlorophylls a and b was maintained at similar levels between Pb-treated and control plants. Moreover, increments in leaf area were noticed in Pb-treated plants in comparison to the control plants (on average, 24.7%). In addition, root length was boosted in plants under Pb exposure (22.6-66.7%). In conclusion, L. cultratus is able to endure the exposure to high Pb concentrations in soil, being a potential plant species to be used for Pb phytostabilization in metal-contaminated soils in tropical regions.

Authors+Show Affiliations

Instituto Federal Goiano, Campus Rio Verde, Rio Verde, Goiás, Brazil.Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz"/Universidade de São Paulo, Piracicaba, SP, 13418-900, Brazil.Instituto Federal Goiano, Campus Rio Verde, Rio Verde, Goiás, Brazil.Instituto Federal Goiano, Campus Rio Verde, Rio Verde, Goiás, Brazil.Instituto Federal Goiano, Campus Rio Verde, Rio Verde, Goiás, Brazil.Departamento de Biologia e Zootecnia, Universidade Estadual Paulista "Julio de Mesquita Filho", Ilha Solteira, SP, Brazil.Instituto Federal Goiano, Campus Rio Verde, Rio Verde, Goiás, Brazil. lucas.anjos@ifgoiano.edu.br.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34378132

Citation

Oliveira, Dayane Gomes, et al. "Lonchocarpus Cultratus, a Brazilian Savanna Tree, Endures High Soil Pb Levels." Environmental Science and Pollution Research International, vol. 28, no. 36, 2021, pp. 50931-50940.
Oliveira DG, Carvalho MEA, Silva HF, et al. Lonchocarpus cultratus, a Brazilian savanna tree, endures high soil Pb levels. Environ Sci Pollut Res Int. 2021;28(36):50931-50940.
Oliveira, D. G., Carvalho, M. E. A., Silva, H. F., Brignoni, A. S., Lima, L. R., Camargos, L. S., & Souza, L. A. (2021). Lonchocarpus cultratus, a Brazilian savanna tree, endures high soil Pb levels. Environmental Science and Pollution Research International, 28(36), 50931-50940. https://doi.org/10.1007/s11356-021-15856-5
Oliveira DG, et al. Lonchocarpus Cultratus, a Brazilian Savanna Tree, Endures High Soil Pb Levels. Environ Sci Pollut Res Int. 2021;28(36):50931-50940. PubMed PMID: 34378132.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Lonchocarpus cultratus, a Brazilian savanna tree, endures high soil Pb levels. AU - Oliveira,Dayane Gomes, AU - Carvalho,Marcia Eugenia Amaral, AU - Silva,Higor Ferreira, AU - Brignoni,Alcindo Sousa, AU - Lima,Letícia Rigonato, AU - Camargos,Liliane Santos, AU - Souza,Lucas Anjos, Y1 - 2021/08/10/ PY - 2021/05/07/received PY - 2021/08/03/accepted PY - 2021/8/12/pubmed PY - 2021/9/21/medline PY - 2021/8/11/entrez KW - Cerrado KW - Hormesis KW - Lead KW - Leguminous plants KW - Phytoremediation KW - Tolerance mechanism SP - 50931 EP - 50940 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 28 IS - 36 N2 - Industrial revolution markedly increased the environmental contamination by different pollutants, which include the metal lead (Pb). The phytoremediation potential of native species from tropical regions is little known, especially for woody plants. The present study aimed to evaluate the performance of Lonchocarpus cultratus (Fabaceae), a tree species from the Brazilian savanna, grown in soil that was artificially contaminated with increasing Pb concentrations (control and 4 Pb treatments, 56, 120, 180, and 292 mg kg-1) for 6 months. The biomass of L. cultratus was not depressed by exposure to Pb, despite the high accumulation of this metal (up to 7421.23 μg plant-1), indicating a high plant tolerance to this trace metal. Lead was mainly accumulated in roots (from 67 to 99%), suggesting that the low root-to-shoot Pb translocation is a plant strategy to avoid Pb-induced damages in photosynthetic tissues. Accordingly, the content of chlorophylls a and b was maintained at similar levels between Pb-treated and control plants. Moreover, increments in leaf area were noticed in Pb-treated plants in comparison to the control plants (on average, 24.7%). In addition, root length was boosted in plants under Pb exposure (22.6-66.7%). In conclusion, L. cultratus is able to endure the exposure to high Pb concentrations in soil, being a potential plant species to be used for Pb phytostabilization in metal-contaminated soils in tropical regions. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/34378132/Lonchocarpus_cultratus_a_Brazilian_savanna_tree_endures_high_soil_Pb_levels_ DB - PRIME DP - Unbound Medicine ER -