Lead uptake and tolerance of Ricinus communis L.

Romeiro, Solange; Lagôa, Ana Maria Magalhães Andrade; Furlani, Pedro Roberto; Abreu, Cleide Aparecida de; Abreu, Mônica Ferreira de; Erismann, Norma M

doi:10.1590/s1677-04202006000400006

Cited by 47 publications

(34 citation statements)

References 31 publications

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“…aokawa) plants (0.1) and turnip (0.30) (Santos, 2005). Higher F values (0.6) were obtained for maize plants grown in Oxisol samples treated with 2400 mg kg -1 de Pb (with and without EDTA) although for jack bean plants grown with increasing Pb rates (100 -400 μmol L -1 ) in the nutrient solution did not observe significant differences for F values (average 0.04) among treatments (Pereira et al, 2007;Romeiro, 2006).…”

Section: Effect Of Split Edta Application Upon the Pb-uptake By Jack mentioning

confidence: 78%

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EDTA assisted phytorremediation of a Pb contamined soil: metal leaching and uptake by jack beans

Gabos¹,

Abreu

Puga

2009

Sci. agric. (Piracicaba, Braz.)

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Lead (Pb) is one of the main soil contaminants. It is also of difficult phytoremediation due to its low solubility and high retention on soil particles. EDTA application to soil is a strategy to increase heavy metal phytoextraction, but such chelants usually cause phytotoxicity and metal leaching side effects. Therefore, these research work objectives were to evaluate the effects of single (0.5 g kg -1 ) and split (0.25 + 0.25 g kg -1 ) EDTA application on Pb uptake by jack beans (Canavalia ensiformis L.) as well as on Pb vertical movement in a Pb contaminated soil material. Two sets of experiments were carried out under greenhouse conditions: in the first one, plants were grown in 3L-pots filled with a Pb-contaminated soil to evaluate Pb uptake by plants; for the second experiment, PVC-columns (42 cm height) were used to evaluate soil Pb leaching: the upper half-column (20 cm) was filled up with Pb-contaminated soil (1800 mg kg -1 ) whereas the lower half-column (20 cm) was filled with clean soil. Ten 60 mm-rainfalls with a duration of five hours were simulated by dropping distilled water on the top of columns, and leachates were collected for chemical analysis. Plants did not show any visual Pb toxicity symptoms or reduction in dry matter yield. Nevertheless, Pb uptake by jack beans regarded as total plant Pb accumulation was higher in EDTA-treated plants. Vertical Pb movement was observed mostly for the single EDTA application. EDTA addition to the soil favor Pb-phytoextraction by jack beans and the split EDTA application decrease the metal leaching, indicating less risk of environmental contamination. Key words: Canavalia ensiformis L., lead, phytoremediation, chelant LIXIVIAÇÃO E ABSORÇÃO DE Pb PELO FEIJÃO-DE-PORCO ASSISTIDO PELA APLICAÇÃO DE EDTA NO SOLORESUMO: O chumbo (Pb) é um dos principais contaminantes de solo. Os processos de remediação são dificultados devido à alta retenção do elemento às partículas do solo. A utilização do EDTA para aumentar a fitoextração dos metais do solo tem apresentado bons resultados. Contudo, os quelantes podem causar efeitos indesejáveis como a fitotoxidez e a lixiviação do metal. Nesse sentido, avaliouse o efeito da aplicação única (0,5 g kg -1 ) e parcelada de EDTA (0,25 + 0,25 g kg -1 ) na absorção de Pb pelas plantas de feijão-de-porco (Canavalia ensiformis L.) e na movimentação vertical de Pb em solo contaminado, sob condições de casa de vegetação. Em um experimento, as plantas foram crescidas em vasos contendo 3 L de solo contaminado por Pb. No outro, utilizaram-se colunas de PVC com 42 cm de altura, preenchendo-se os primeiros 20 cm com solo contaminado com 1800 mg kg -1 de Pb, seguido de outros 20 cm, com amostra de solo não contaminado. Nesse experimento, foram feitas dez lixiviações com água em volume equivalente a uma chuva de 60 mm cada. As plantas não apresentaram sintomas visuais de toxicidade de Pb, nem diferença na produção de massa seca do feijão em função dos tratamentos aplicados. No entanto, a absorção de Pb foi superior para as plantas que r...

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Section: Effect Of Split Edta Application Upon the Pb-uptake By Jack mentioning

confidence: 78%

“…Most studies on phytoextracting species were accomplished under temperate climate conditions. Under tropical conditions, jack beans have been reported as effective Pb phytoextractors (Romeiro, 2006;Pereira, 2005).…”

Section: Introductionmentioning

confidence: 99%

EDTA assisted phytorremediation of a Pb contamined soil: metal leaching and uptake by jack beans

Gabos¹,

Abreu

Puga

2009

Sci. agric. (Piracicaba, Braz.)

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“…Such accumulation occurred with maximum efficiency in the range from 200 to 250 mg L -1 of Pb (Figures 2 and 3). Romeiro et al (2006) observed that castor bean plants cultivated under Pb concentrations from 0 and 400 μmol L -1 , in nutrient solution, accumulated ≈ 25,000 g kg -1 of Pb in root dry matter. In vetiver, great capacity of Pb accumulation in the roots and low translocation of this element to the shoots were shown by other authors (Alves et al, 2008;Andra et al, 2009;Danh et al, 2011), highlighting its great potential for Pb phytostabilization.…”

Section: Bmentioning

confidence: 98%

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

Alves

Souza

Pôrto

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TStudies concerning the tolerance, absorption and distribution of heavy metals in plants are essential for the success of phytoremediation programs. The present study was carried out in order to evaluate the potential of the sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators. The species were grown in nutrient solution containing increasing doses of Pb (0, 50, 100, 200 and 400 mg L -1 ) during a 30-day exposure period. A completely randomized split-plot design was used, with a 4 x 5 factorial and three replicates. Significant reductions of dry matter of the root, shoot and whole plant were found in the all species under study as a function of the increased Pb doses. Vetiver showed higher tolerance to Pb contamination; sunflower and castor bean had intermediate tolerance and the common buckwheat proved to be the most sensitive species. The concentration and total content of Pb in plant compartments were significantly affected by the increased Pb doses in solution, and higher accumulation of this element was observed, in general, in the roots of the studied species. Common buckwheat proved to be not much promising for Pb-phytoremediation programs; sunflower showed potential for Pb phytoextraction and castor bean and vetiver were the most appropriate for Pb phytostabilization.Potencial de girassol, mamona, trigo mourisco e vetiver como fitoacumuladoras de chumbo R E S U M O Estudos sobre a tolerância, absorção e distribuição de metais pesados em plantas, são essenciais para se obter sucesso em programas de fitorremediação. O objetivo foi avaliar o potencial de girassol, mamona, trigo mourisco e vetiver como fito-acumuladoras de chumbo (Pb). As espécies foram cultivadas em solução nutritiva com doses crescentes de Pb (0, 50, 100, 200 e 400 mg L -1 ) durante 30 dias. O delineamento empregado foi o inteiramente casualizado em parcela subdividida com o fatorial 4 x 5, com três repetições. Foram constatadas reduções na matéria seca da raiz, parte aérea e planta inteira das espécies estudadas em resposta à elevação das doses de Pb. O vetiver mostrou a maior tolerância ao Pb, a mamona e o girassol apresentaram tolerância intermediária e o trigo mourisco se mostrou a espécie mais sensível. Os teores e conteúdos de Pb nos compartimentos das plantas aumentaram com a elevação das doses de Pb, tendo sido verificado, de forma geral, maior acúmulo deste elemento nas raízes. O trigo mourisco mostrou-se pouco promissor para programas de fitorremediação de Pb, o girassol apresentou potencial para fitoextração de Pb e a mamona e vetiver se mostraram mais adequadas para fitoestabilização desse elemento.

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“…Essa redução no crescimento foi diretamente proporcional ao aumento da concentração de Pb no solo e da quantidade extraída, sendo que os menores valores, para ambos os parâmetros, foram apresentados pelas plantas manejadas com a dose de 1.200 mg kg -1 de Pb no solo. Romeiro et al (2006) inferiram que houve redução das massas das matérias secas da parte aérea e das raízes de mamoneiras submetidas a uma concentração de 200 µmol L -1 de Pb, em hidroponia. Porém, mesmo apresentando redução na produção da massa da matéria seca, as plantas citadas apresentaram a habilidade de acumular Pb nas raízes.…”

Section: Introductionunclassified

Potencial de fitoextração de Pb por mamoneiras em solo contaminado

et al. 2012

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ResumoAmostras do solo e do tecido vegetal foram coletadas noventa dias após a semeadura para a quantificação das massas das matérias secas da parte aérea e das raízes e para a determinação do acúmulo de chumbo nos tecidos vegetais de ambas as espécies. Os parâmetros avaliados foram submetidos à análise de variância avaliando-se o efeito dos tratamentos pelo teste de Tukey a nível de 5% de probabilidade. Os resultados significativos apresentados pelo Teste F foram submetidos à regressão polinomial. As mamoneiras apresentaram maior acúmulo de Pb nas raízes, houve uma diminuição do crescimento das plantas em função da diminuição das massas das matérias secas da parte aérea e das raízes com o aumento gradual da concentração de Pb no solo e, a adição de 1200 mg kg -1 de Pb no solo foi mais efetiva para a diminuição do crescimento das mamoneiras. Palavras-chave: Fitorremediação, fitoextração, espécies hiperacumuladoras, poluição do solo AbstractThe present work was developed with the objective to evaluate the accumulation of Pb in plant tissue of castor bean (Ricinus communis L.) in contaminated soil and investigate the potential for soil remediation. The experiment was carried out in a greenhouse at the Faculty of Agricultural Sciences/UNOESTEPresidente Prudente/SP. Plants were grown in pots with a capacity of 9 dm 3 of soil. The treatments were in addition to the vessels of 18.8 mg kg -1 , 37.5 mg kg -1 , 75 mg kg -1 , 150 mg kg -1 , 300 mg kg -1 , 600 mg kg -1 and 1200 mg kg -1 in the form of Pb (Pb(NO 3 ) 2 ). Treatments were arranged according to completely randomized design with three replications. Samples of soil and plant tissue were collected ninety days after sowing for the quantification of mass of dry matter of shoots and roots, and for determining the accumulation of lead in tissues of both species. The parameters were subjected to analysis of variance evaluating the effect of treatments by the Tukey test at 5% level of probability. The results presented by significant F-test were submitted to polynomial regression. The castor beans had a higher accumulation

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Lead uptake and tolerance of Ricinus communis L.

Cited by 47 publications

References 31 publications

EDTA assisted phytorremediation of a Pb contamined soil: metal leaching and uptake by jack beans

EDTA assisted phytorremediation of a Pb contamined soil: metal leaching and uptake by jack beans

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

Potencial de fitoextração de Pb por mamoneiras em solo contaminado

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