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Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage.
J Environ Manage. 2012 Nov 15; 110:299-307.JE

Abstract

A greenhouse pot experiment was conducted to evaluate the potential of three Brazilian leguminous woody species, Mimosa caesalpiniaefolia, Erythrina speciosa and Schizolobium parahyba, for the revegetation of lead- (Pb-) contaminated areas. The response of seedlings to increasing Pb concentrations (0, 250, 500 and 1000 mg kg(-1)) in the soil was studied. In addition to Pb accumulation and translocation, the following parameters were assessed: chlorophyll, nitrate, ammonia, lipid peroxidation (MDA) and free amino acid content; seedling growth; and nitrogenase activity. No differences were observed in the germination of woody species seeds sown in soils with or without Pb addition. M. caesalpiniaefolia did not show visual symptoms of Pb toxicity, while the other two species demonstrated stress symptoms, including reduced shoot biomass yield, leaf area and height. Biochemical analyses of plant tissues revealed markedly different responses to increasing Pb concentrations, such as changes in foliar soluble amino acid composition in S. parahyba; changes in ammonia and nitrate content in E. speciosa, M. caesalpiniaefolia and S. parahyba; and changes in MDA content in S. parahyba. The levels of chlorophyll a and b and carotenoid were affected in the species studied. For the Nitrogen-fixing (N(2)-fixing) species E. speciosa, an increase of Pb in the soil affected nodule formation and growth, which led to reduced nitrogenase activity in seedlings. The concentration of Pb in shoots and roots increased with the Pb concentration in soil. However, most of the Pb absorbed accumulated in the roots, and only a small fraction was translocated to aboveground parts. These findings were confirmed by the low bioconcentration factor (BCF) and translocation factor (TF) values for the three species. The tolerance index (TI) values suggested that M. caesalpiniaefolia, a N(2)-fixing tree, was the species that was most tolerant to high Pb concentrations in soil, while E. speciosa and S. parahyba showed moderate tolerance. Of the three Brazilian native woody species studied, M. caesalpiniaefolia was found to have the highest Pb tolerance and phytostabilisation potential in Pb-contaminated soils.

Authors+Show Affiliations

Institute of Biology, University of Campinas - Unicamp, PO Box 6109, 13083-970 Campinas, SP, Brazil. sarahcarolbio@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22831760

Citation

Ribeiro de Souza, Sarah Caroline, et al. "Lead Tolerance and Phytoremediation Potential of Brazilian Leguminous Tree Species at the Seedling Stage." Journal of Environmental Management, vol. 110, 2012, pp. 299-307.
Ribeiro de Souza SC, Adrián López de Andrade S, Anjos de Souza L, et al. Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage. J Environ Manage. 2012;110:299-307.
Ribeiro de Souza, S. C., Adrián López de Andrade, S., Anjos de Souza, L., & Schiavinato, M. A. (2012). Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage. Journal of Environmental Management, 110, 299-307. https://doi.org/10.1016/j.jenvman.2012.06.015
Ribeiro de Souza SC, et al. Lead Tolerance and Phytoremediation Potential of Brazilian Leguminous Tree Species at the Seedling Stage. J Environ Manage. 2012 Nov 15;110:299-307. PubMed PMID: 22831760.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Lead tolerance and phytoremediation potential of Brazilian leguminous tree species at the seedling stage. AU - Ribeiro de Souza,Sarah Caroline, AU - Adrián López de Andrade,Sara, AU - Anjos de Souza,Lucas, AU - Schiavinato,Marlene Aparecida, Y1 - 2012/07/23/ PY - 2011/11/08/received PY - 2012/03/23/revised PY - 2012/06/19/accepted PY - 2012/7/27/entrez PY - 2012/7/27/pubmed PY - 2013/1/24/medline SP - 299 EP - 307 JF - Journal of environmental management JO - J Environ Manage VL - 110 N2 - A greenhouse pot experiment was conducted to evaluate the potential of three Brazilian leguminous woody species, Mimosa caesalpiniaefolia, Erythrina speciosa and Schizolobium parahyba, for the revegetation of lead- (Pb-) contaminated areas. The response of seedlings to increasing Pb concentrations (0, 250, 500 and 1000 mg kg(-1)) in the soil was studied. In addition to Pb accumulation and translocation, the following parameters were assessed: chlorophyll, nitrate, ammonia, lipid peroxidation (MDA) and free amino acid content; seedling growth; and nitrogenase activity. No differences were observed in the germination of woody species seeds sown in soils with or without Pb addition. M. caesalpiniaefolia did not show visual symptoms of Pb toxicity, while the other two species demonstrated stress symptoms, including reduced shoot biomass yield, leaf area and height. Biochemical analyses of plant tissues revealed markedly different responses to increasing Pb concentrations, such as changes in foliar soluble amino acid composition in S. parahyba; changes in ammonia and nitrate content in E. speciosa, M. caesalpiniaefolia and S. parahyba; and changes in MDA content in S. parahyba. The levels of chlorophyll a and b and carotenoid were affected in the species studied. For the Nitrogen-fixing (N(2)-fixing) species E. speciosa, an increase of Pb in the soil affected nodule formation and growth, which led to reduced nitrogenase activity in seedlings. The concentration of Pb in shoots and roots increased with the Pb concentration in soil. However, most of the Pb absorbed accumulated in the roots, and only a small fraction was translocated to aboveground parts. These findings were confirmed by the low bioconcentration factor (BCF) and translocation factor (TF) values for the three species. The tolerance index (TI) values suggested that M. caesalpiniaefolia, a N(2)-fixing tree, was the species that was most tolerant to high Pb concentrations in soil, while E. speciosa and S. parahyba showed moderate tolerance. Of the three Brazilian native woody species studied, M. caesalpiniaefolia was found to have the highest Pb tolerance and phytostabilisation potential in Pb-contaminated soils. SN - 1095-8630 UR - https://www.unboundmedicine.com/medline/citation/22831760/Lead_tolerance_and_phytoremediation_potential_of_Brazilian_leguminous_tree_species_at_the_seedling_stage_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-4797(12)00330-1 DB - PRIME DP - Unbound Medicine ER -