Avaliação dos efeitos tóxicos de Cd e Pb na cultura da mostarda (Brassica juncea)
Com o objetivo de avaliar o efeito da aplicação de cádmio (Cd) e chumbo (Pb) na cultura da mostarda (Brassica juncea) e sua relação com o desenvolvimento das plantas, os teores, o acúmulo e a translocação nas raízes e na parte aérea, plantas de mostarda em solução nutritiva de Clark foram cultivadas...
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Published in | Engenharia sanitária e ambiental Vol. 19; no. spe; pp. 61 - 68 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
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2014
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Abstract | Com o objetivo de avaliar o efeito da aplicação de cádmio (Cd) e chumbo (Pb) na cultura da mostarda (Brassica juncea) e sua relação com o desenvolvimento das plantas, os teores, o acúmulo e a translocação nas raízes e na parte aérea, plantas de mostarda em solução nutritiva de Clark foram cultivadas e submetidas a doses crescentes de Cd (0,00; 0,25; 1,00; 5,00 e 10,00 mg.L-1) e de Pb (0,00; 2,50; 10,00; 50,00 e 100,00 mg.L-1). O Cd mostrou significativa translocação na planta, o que se deve à formação de um complexo entre essa espécie química e a fitoquelatina; a baixa translocação de Pb e o efeito deletério se devem a depósitos radiculares de quelatos estáveis de Pb.
With the objective of evaluating the effect of cadmium (Cd) and lead (Pb) in the culture of mustard (Brassica juncea) and its relationship with plant development, levels, accumulation and translocation in roots and shoots, mustard plants were grown in Clark nutrient solution and subjected to increasing doses of Cd (0.00; 0.25; 1.00; 5.00 and 10.00 mg.L-1) and Pb (0.00; 2.50; 10.00; 50.00 and 100.00 mg.L-1). Cd showed a significant translocation into the plant, which is due to the formation of a complex between the chemical species and phytochelatin; the low translocation of Pb and deleterious effects are due to root deposits of Pb stable chelates. |
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AbstractList | Com o objetivo de avaliar o efeito da aplicação de cádmio (Cd) e chumbo (Pb) na cultura da mostarda (Brassica juncea) e sua relação com o desenvolvimento das plantas, os teores, o acúmulo e a translocação nas raízes e na parte aérea, plantas de mostarda em solução nutritiva de Clark foram cultivadas e submetidas a doses crescentes de Cd (0,00; 0,25; 1,00; 5,00 e 10,00 mg.L-1) e de Pb (0,00; 2,50; 10,00; 50,00 e 100,00 mg.L-1). O Cd mostrou significativa translocação na planta, o que se deve à formação de um complexo entre essa espécie química e a fitoquelatina; a baixa translocação de Pb e o efeito deletério se devem a depósitos radiculares de quelatos estáveis de Pb.
With the objective of evaluating the effect of cadmium (Cd) and lead (Pb) in the culture of mustard (Brassica juncea) and its relationship with plant development, levels, accumulation and translocation in roots and shoots, mustard plants were grown in Clark nutrient solution and subjected to increasing doses of Cd (0.00; 0.25; 1.00; 5.00 and 10.00 mg.L-1) and Pb (0.00; 2.50; 10.00; 50.00 and 100.00 mg.L-1). Cd showed a significant translocation into the plant, which is due to the formation of a complex between the chemical species and phytochelatin; the low translocation of Pb and deleterious effects are due to root deposits of Pb stable chelates. |
Author | Augusto, Amanda dos Santos Cannata, Marcele Gabriel Bertoli, Alexandre Carvalho Carvalho, Ruy Bastos, Ana Rosa Ribeiro |
Author_xml | – sequence: 1 givenname: Amanda dos Santos surname: Augusto fullname: Augusto, Amanda dos Santos organization: Universidade Federal de Lavras (UFLA), Brasil – sequence: 2 givenname: Alexandre Carvalho surname: Bertoli fullname: Bertoli, Alexandre Carvalho organization: Universidade Federal de Lavras (UFLA), Brasil; Universidade Federal de Alfenas (UNIFAL), Brasil – sequence: 3 givenname: Marcele Gabriel surname: Cannata fullname: Cannata, Marcele Gabriel organization: Universidade Federal de Lavras (UFLA), Brasil – sequence: 4 givenname: Ruy surname: Carvalho fullname: Carvalho, Ruy organization: Universidade Federal de Lavras (UFLA), Brasil – sequence: 5 givenname: Ana Rosa Ribeiro surname: Bastos fullname: Bastos, Ana Rosa Ribeiro organization: Universidade Federal de Lavras (UFLA), Brasil |
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