Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil

Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil

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–The influence of 14 arbuscular mycorrhiza fungal isolates (AMF) on brachiariagrass growth and extraction of Zn, Cd, Cu and Pb from a contaminated soil was evaluated in a greenhouse experiment. Mycorrhizal and nonmycorrhizal Brachiaria decumbens plants were grown in pots with 0.92 kg of soil containing (mg kg-1): Zn, 3,300; Cu, 60; Cd, 29; Pb, 73. The AMF increased dry matter yield in 84%. Plant heavy metal concentrations were high and were inversely related to dry matter yield. Isolates caused no effect on Pb, but reduced shoot Zn, Cd and Cu concentrations by 20, 28 and 63%, respectively. It was observed effect of mycorrhiza on Cu accumulation in roots (over 1,000%). Isolates enhanced the total amount of soil extracted metals by 845, 142, 68 and 54% for Cu, Pb, Zn and Cd, respectively. Only Acaulospora spinosa, Acaulospora morrowiae-UFLA and Gigaspora gigantea enhanced simultaneous soil extraction of all the four metals. The AMF increase the capacity of B. decumbens to extract contaminant heavy metals from soil, with differentiated effects amongst species.

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Main Authors: da Silva, Silvana, Siqueira, José Oswaldo, Sousa Soares, Cláudio Roberto Fonsêca
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2006
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/7341
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spelling rev-pab-br-article-73412014-10-08T16:10:40Z Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil Fungos micorrízicos no crescimento e na extração de metais pesados pela braquiária em solo contaminado da Silva, Silvana Siqueira, José Oswaldo Sousa Soares, Cláudio Roberto Fonsêca Brachiaria decumbens; root symbiosis; phytoextraction; soil fungi; soil polution Brachiaria decumbens; simbiose radicular; fitoextração; fungos do solo; poluição do solo –The influence of 14 arbuscular mycorrhiza fungal isolates (AMF) on brachiariagrass growth and extraction of Zn, Cd, Cu and Pb from a contaminated soil was evaluated in a greenhouse experiment. Mycorrhizal and nonmycorrhizal Brachiaria decumbens plants were grown in pots with 0.92 kg of soil containing (mg kg-1): Zn, 3,300; Cu, 60; Cd, 29; Pb, 73. The AMF increased dry matter yield in 84%. Plant heavy metal concentrations were high and were inversely related to dry matter yield. Isolates caused no effect on Pb, but reduced shoot Zn, Cd and Cu concentrations by 20, 28 and 63%, respectively. It was observed effect of mycorrhiza on Cu accumulation in roots (over 1,000%). Isolates enhanced the total amount of soil extracted metals by 845, 142, 68 and 54% for Cu, Pb, Zn and Cd, respectively. Only Acaulospora spinosa, Acaulospora morrowiae-UFLA and Gigaspora gigantea enhanced simultaneous soil extraction of all the four metals. The AMF increase the capacity of B. decumbens to extract contaminant heavy metals from soil, with differentiated effects amongst species. –Avaliou-se, em casa de vegetação, a influência de 14 isolados de fungos micorrízicos arbusculares (FMA) no crescimento e extração de Zn, Cd, Cu e Pb pela Brachiaria decumbens em solo contaminado. Foram utilizadas plantas com e sem FMA, em vasos com 0,92 kg de solo com (mg kg-1): Zn, 3.300; Cu, 60; Cd, 29; Pb, 73. Os isolados fúngicos tiveram efeitos diferenciados no crescimento e aumentaram a produção de matéria seca em 84%. Os teores de metais na planta foram elevados e apresentaram relação inversa com a produção de matéria seca. Verificou-se que os FMA não afetaram os teores de Pb, mas reduziram em 20, 28 e 63% os teores de Zn, Cd e Cu na parte aérea, respectivamente, e aumentaram os teores de Cu nas raízes em mais de 1.000%. Os FMA aumentaram a quantidade de metais extraídos do solo em 845, 142, 68 e 54% para Cu, Pb, Zn e Cd, respectivamente. Acaulospora spinosa, Acaulospora morrowiae-UFLA e Gigaspora gigantea aumentaram a extração simultânea dos quatro metais contaminantes. Os FMA, de acordo com a espécie, aumentam a capacidade da B. decumbens de extrair metais pesados do solo. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2006-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/7341 Pesquisa Agropecuaria Brasileira; v.41, n.12, dez. 2006; 1749-1757 Pesquisa Agropecuária Brasileira; v.41, n.12, dez. 2006; 1749-1757 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/7341/4386
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author da Silva, Silvana
Siqueira, José Oswaldo
Sousa Soares, Cláudio Roberto Fonsêca
spellingShingle da Silva, Silvana
Siqueira, José Oswaldo
Sousa Soares, Cláudio Roberto Fonsêca
Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
author_facet da Silva, Silvana
Siqueira, José Oswaldo
Sousa Soares, Cláudio Roberto Fonsêca
author_sort da Silva, Silvana
title Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
title_short Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
title_full Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
title_fullStr Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
title_full_unstemmed Mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
title_sort mycorrhizal fungi influence on brachiariagrass growth and heavy metal extraction in a contaminated soil
description –The influence of 14 arbuscular mycorrhiza fungal isolates (AMF) on brachiariagrass growth and extraction of Zn, Cd, Cu and Pb from a contaminated soil was evaluated in a greenhouse experiment. Mycorrhizal and nonmycorrhizal Brachiaria decumbens plants were grown in pots with 0.92 kg of soil containing (mg kg-1): Zn, 3,300; Cu, 60; Cd, 29; Pb, 73. The AMF increased dry matter yield in 84%. Plant heavy metal concentrations were high and were inversely related to dry matter yield. Isolates caused no effect on Pb, but reduced shoot Zn, Cd and Cu concentrations by 20, 28 and 63%, respectively. It was observed effect of mycorrhiza on Cu accumulation in roots (over 1,000%). Isolates enhanced the total amount of soil extracted metals by 845, 142, 68 and 54% for Cu, Pb, Zn and Cd, respectively. Only Acaulospora spinosa, Acaulospora morrowiae-UFLA and Gigaspora gigantea enhanced simultaneous soil extraction of all the four metals. The AMF increase the capacity of B. decumbens to extract contaminant heavy metals from soil, with differentiated effects amongst species.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2006
url https://seer.sct.embrapa.br/index.php/pab/article/view/7341
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