Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/11565 |
Resumo: | Soil contamination with heavy metals brings with it several environmental problems. Among these metals, cadmium (Cd) stands out as an extremely harmful element to plant development and may even cause possible loss or suppression of vegetation in various soils worldwide. Thus, it is necessary to identify tolerant species to reestablish the ecological conditions of the environment. The present study aimed to evaluate Cd tolerance in Enterolobium contortisiliquum seedlings by assessing the effects of Cd on morphophysiological and biochemical variables and determining its potential as a phytoremediator species. The experimental design was completely randomized with four replications. Five Cd concentrations (0, 25, 50, 75, and 100 µmol L-1) were assessed. At the end of the exposure period to the treatments, we measured photosynthetic, morphological (shoot and root dry weight and root morphology), and biochemical (concentration of photosynthetic pigments, hydrogen peroxide content, membrane lipid peroxidation, and guaiacol peroxidase and superoxide dismutase activity) variables in plants. Even with the activation of antioxidant enzymes, cadmium concentrations negatively affected the photosynthetic pigments and photosynthetic rate of Enterolobium contortisiliquum, which reduced biomass production and photosystem functions, evidencing its sensitivity to excess Cd. Based on these characteristics, E. contortisiliquum seedlings can be used as a bioindicator for cadmium-contaminated areas. |
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Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquumToxicidade de cádmio e respostas de sensibilidade em Enterolobium contortisiliquumEnzimas antioxidantes. Excesso de cádmio. Trocas gasosas. Estresse oxidativo. Timbaúva.Antioxidant enzymes. Cadmium excess. Gas exchange. Oxidative stress. Timbaúva.Soil contamination with heavy metals brings with it several environmental problems. Among these metals, cadmium (Cd) stands out as an extremely harmful element to plant development and may even cause possible loss or suppression of vegetation in various soils worldwide. Thus, it is necessary to identify tolerant species to reestablish the ecological conditions of the environment. The present study aimed to evaluate Cd tolerance in Enterolobium contortisiliquum seedlings by assessing the effects of Cd on morphophysiological and biochemical variables and determining its potential as a phytoremediator species. The experimental design was completely randomized with four replications. Five Cd concentrations (0, 25, 50, 75, and 100 µmol L-1) were assessed. At the end of the exposure period to the treatments, we measured photosynthetic, morphological (shoot and root dry weight and root morphology), and biochemical (concentration of photosynthetic pigments, hydrogen peroxide content, membrane lipid peroxidation, and guaiacol peroxidase and superoxide dismutase activity) variables in plants. Even with the activation of antioxidant enzymes, cadmium concentrations negatively affected the photosynthetic pigments and photosynthetic rate of Enterolobium contortisiliquum, which reduced biomass production and photosystem functions, evidencing its sensitivity to excess Cd. Based on these characteristics, E. contortisiliquum seedlings can be used as a bioindicator for cadmium-contaminated areas.A contaminação do solo por metais pesados traz consigo diversos problemas ambientais. Dentre esses metais, destaca-se o cádmio (Cd) como um elemento extremamente prejudicial ao desenvolvimento das plantas, podendo inclusive causar possível perda ou supressão da vegetação em diversos solos ao redor do mundo. Assim, é necessário identificar espécies tolerantes para restabelecer as condições ecológicas do ambiente. Neste estudo, o objetivo foi avaliar a tolerância ao Cd em mudas de Enterolobium contortisiliquum, avaliando os efeitos do Cd sobre variáveis morfofisiológicas e bioquímicas para determinar seu potencial como espécie fitorremediadora. O delineamento experimental utilizado foi o inteiramente casualizado com quatro repetições, composto por cinco concentrações de Cd: 0, 25, 50, 75 e 100 µmol L-1. Ao final do período de exposição aos tratamentos, foram medidas as variáveis fotossintéticas, morfológicas (massa seca da parte aérea e da raiz e morfologia da raiz) e bioquímicas (concentração de pigmentos fotossintéticos, teor de peróxido de hidrogênio, peroxidação lipídica da membrana e atividade da guaiacol peroxidase e superóxido dismutase). Mesmo com a ativação de enzimas antioxidantes, as concentrações de cádmio afetaram negativamente os pigmentos fotossintéticos e a taxa fotossintética de Enterolobium contortisiliquum. Isso resultou em uma redução na produção de biomassa e nas funções do fotossistema, fato que indica sua sensibilidade ao excesso de Cd. Devido a essas características, mudas de E. contortisiliquum podem ser utilizadas como bioindicadoras de áreas contaminadas por cádmio.Universidade Federal Rural do Semi-Árido2023-09-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/1156510.1590/1983-21252023v36n409rcREVISTA CAATINGA; Vol. 36 No. 4 (2023); 814-822Revista Caatinga; v. 36 n. 4 (2023); 814-8221983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/11565/11323Copyright (c) 2023 Revista Caatingainfo:eu-repo/semantics/openAccessSenhor, Daiane FranchescaAguilar, Marcos Vinícius MirandaKuinchtner, Caroline CastroWertonge , Gerâne SilvaBirck, Thalia PreusslerTabaldi, Luciane Almeri2023-09-28T13:11:58Zoai:ojs.periodicos.ufersa.edu.br:article/11565Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:47:04.353226Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum Toxicidade de cádmio e respostas de sensibilidade em Enterolobium contortisiliquum |
title |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum |
spellingShingle |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum Senhor, Daiane Franchesca Enzimas antioxidantes. Excesso de cádmio. Trocas gasosas. Estresse oxidativo. Timbaúva. Antioxidant enzymes. Cadmium excess. Gas exchange. Oxidative stress. Timbaúva. |
title_short |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum |
title_full |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum |
title_fullStr |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum |
title_full_unstemmed |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum |
title_sort |
Cadmium toxicity and sensitivity responses in Enterolobium contortisiliquum |
author |
Senhor, Daiane Franchesca |
author_facet |
Senhor, Daiane Franchesca Aguilar, Marcos Vinícius Miranda Kuinchtner, Caroline Castro Wertonge , Gerâne Silva Birck, Thalia Preussler Tabaldi, Luciane Almeri |
author_role |
author |
author2 |
Aguilar, Marcos Vinícius Miranda Kuinchtner, Caroline Castro Wertonge , Gerâne Silva Birck, Thalia Preussler Tabaldi, Luciane Almeri |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Senhor, Daiane Franchesca Aguilar, Marcos Vinícius Miranda Kuinchtner, Caroline Castro Wertonge , Gerâne Silva Birck, Thalia Preussler Tabaldi, Luciane Almeri |
dc.subject.por.fl_str_mv |
Enzimas antioxidantes. Excesso de cádmio. Trocas gasosas. Estresse oxidativo. Timbaúva. Antioxidant enzymes. Cadmium excess. Gas exchange. Oxidative stress. Timbaúva. |
topic |
Enzimas antioxidantes. Excesso de cádmio. Trocas gasosas. Estresse oxidativo. Timbaúva. Antioxidant enzymes. Cadmium excess. Gas exchange. Oxidative stress. Timbaúva. |
description |
Soil contamination with heavy metals brings with it several environmental problems. Among these metals, cadmium (Cd) stands out as an extremely harmful element to plant development and may even cause possible loss or suppression of vegetation in various soils worldwide. Thus, it is necessary to identify tolerant species to reestablish the ecological conditions of the environment. The present study aimed to evaluate Cd tolerance in Enterolobium contortisiliquum seedlings by assessing the effects of Cd on morphophysiological and biochemical variables and determining its potential as a phytoremediator species. The experimental design was completely randomized with four replications. Five Cd concentrations (0, 25, 50, 75, and 100 µmol L-1) were assessed. At the end of the exposure period to the treatments, we measured photosynthetic, morphological (shoot and root dry weight and root morphology), and biochemical (concentration of photosynthetic pigments, hydrogen peroxide content, membrane lipid peroxidation, and guaiacol peroxidase and superoxide dismutase activity) variables in plants. Even with the activation of antioxidant enzymes, cadmium concentrations negatively affected the photosynthetic pigments and photosynthetic rate of Enterolobium contortisiliquum, which reduced biomass production and photosystem functions, evidencing its sensitivity to excess Cd. Based on these characteristics, E. contortisiliquum seedlings can be used as a bioindicator for cadmium-contaminated areas. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/11565 10.1590/1983-21252023v36n409rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/11565 |
identifier_str_mv |
10.1590/1983-21252023v36n409rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/11565/11323 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 36 No. 4 (2023); 814-822 Revista Caatinga; v. 36 n. 4 (2023); 814-822 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
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1797674030095925248 |