Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/6570 |
Resumo: | Despite the fact that bauxite mining activity promotes changes in soil characteristics, with negative effects on arbuscular mycorrhizas (AM), the effects of rehabilitation on AM fungi and their symbiosis are unknown. The purpose of this study was to evaluate the occurrence, diversity and efficiency of AM fungi, in bauxite mining areas, with different vegetation types and rehabilitation ages. Rhizosphere soil samples were collected for evaluations of extraradical mycelium, spore density, richness and diversity of AM fungi and to evaluate root colonization and symbiotic efficiency of fungal populations. Mining activity had negative effects on AM fungi and the AM recovering was more related to vegetation types than to areas rehabilitation age. Six species were found: Gigaspora margarita, Gigaspora sp., Paraglomus occultum, Glomus sp., Entrophospora colombiana and Acaulospora scrobiculata. AM fungi occurrence was favored by both grasses and Mimosa scabrella. Although Eucalyptus saligna was not a good host for these fungi, its presence associated with a well developed and diverse understore contributed for the recovering of AM fungi. The fungal populations isolated from areas with Brachiaria decumbens and Cajanus cajan and from Mimosa scabrella and Melinis minutiflora were highly efficient for bean plants growth, showing that it is possible to recover the function of AM fungi using different vegetation types. These AM fungi present a high potential of utilization for the rehabilitation of mining disturbed areas. |
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Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitationFungos micorrízicos arbusculares em solos de área de mineração de bauxita em reabilitaçãovegetation; symbiosis; symbionts; reclamationvegetação; simbiose; simbionte; recuperação do soloDespite the fact that bauxite mining activity promotes changes in soil characteristics, with negative effects on arbuscular mycorrhizas (AM), the effects of rehabilitation on AM fungi and their symbiosis are unknown. The purpose of this study was to evaluate the occurrence, diversity and efficiency of AM fungi, in bauxite mining areas, with different vegetation types and rehabilitation ages. Rhizosphere soil samples were collected for evaluations of extraradical mycelium, spore density, richness and diversity of AM fungi and to evaluate root colonization and symbiotic efficiency of fungal populations. Mining activity had negative effects on AM fungi and the AM recovering was more related to vegetation types than to areas rehabilitation age. Six species were found: Gigaspora margarita, Gigaspora sp., Paraglomus occultum, Glomus sp., Entrophospora colombiana and Acaulospora scrobiculata. AM fungi occurrence was favored by both grasses and Mimosa scabrella. Although Eucalyptus saligna was not a good host for these fungi, its presence associated with a well developed and diverse understore contributed for the recovering of AM fungi. The fungal populations isolated from areas with Brachiaria decumbens and Cajanus cajan and from Mimosa scabrella and Melinis minutiflora were highly efficient for bean plants growth, showing that it is possible to recover the function of AM fungi using different vegetation types. These AM fungi present a high potential of utilization for the rehabilitation of mining disturbed areas.Apesar de a mineração de bauxita causar grandes alterações nas características do solo, com efeitos negativos nas micorrizas arbusculares, os efeitos da reabilitação de áreas mineradas sobre os fungos micorrízicos arbusculares (MA) e sua simbiose são pouco conhecidos. O objetivo deste trabalho foi avaliar a ocorrência, diversidade e eficiência dos fungos MA, em áreas de mineração de bauxita, com diferentes tipos de vegetação e idades de reabilitação. Amostras de solo da rizosfera foram coletadas para analisar o micélio fúngico extrarradicular, o número de esporos, a riqueza e diversidade de fungos MA e para avaliar a colonização micorrízica e eficiência simbiótica de populações fúngicas. A mineração afetou negativamente os fungos MA, sendo a recuperação destes mais relacionada com o tipo de vegetação do que com o tempo de reabilitação da área. Foram encontradas as espécies: Gigaspora margarita, Gigaspora sp., Paraglomus occultum, Glomus sp., Entrophospora colombiana e Acaulospora scrobiculata. A ocorrência desses fungos foi favorecida pela presença de gramíneas e de bracatinga. Embora Eucalyptus saligna não seja um bom hospedeiro para os fungos MA, quando associado a sub-bosque bem desenvolvido e diverso, contribuiu para a recuperação dos fungos. As populações fúngicas isoladas de áreas com braquiária e feijão-guandu ou de bracatinga com capim-gordura apresentaram elevada eficiência para o feijoeiro, mostrando que é possível recuperar a função deste grupo de microrganismos utilizando diferentes tipos de vegetação. Estes isolados apresentam potencial de utilização em programas de reabilitação de solos minerados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMelloni, RogérioSiqueira, José OswaldoMoreira, Fátima Maria de Souza2003-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6570Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 267-276Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 267-2761678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6570/3627info:eu-repo/semantics/openAccess2010-08-16T17:47:14Zoai:ojs.seer.sct.embrapa.br:article/6570Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-16T17:47:14Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation Fungos micorrízicos arbusculares em solos de área de mineração de bauxita em reabilitação |
title |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation |
spellingShingle |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation Melloni, Rogério vegetation; symbiosis; symbionts; reclamation vegetação; simbiose; simbionte; recuperação do solo |
title_short |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation |
title_full |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation |
title_fullStr |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation |
title_full_unstemmed |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation |
title_sort |
Arbuscular mycorrhizal fungi in soils of bauxite mining area under rehabilitation |
author |
Melloni, Rogério |
author_facet |
Melloni, Rogério Siqueira, José Oswaldo Moreira, Fátima Maria de Souza |
author_role |
author |
author2 |
Siqueira, José Oswaldo Moreira, Fátima Maria de Souza |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Melloni, Rogério Siqueira, José Oswaldo Moreira, Fátima Maria de Souza |
dc.subject.por.fl_str_mv |
vegetation; symbiosis; symbionts; reclamation vegetação; simbiose; simbionte; recuperação do solo |
topic |
vegetation; symbiosis; symbionts; reclamation vegetação; simbiose; simbionte; recuperação do solo |
description |
Despite the fact that bauxite mining activity promotes changes in soil characteristics, with negative effects on arbuscular mycorrhizas (AM), the effects of rehabilitation on AM fungi and their symbiosis are unknown. The purpose of this study was to evaluate the occurrence, diversity and efficiency of AM fungi, in bauxite mining areas, with different vegetation types and rehabilitation ages. Rhizosphere soil samples were collected for evaluations of extraradical mycelium, spore density, richness and diversity of AM fungi and to evaluate root colonization and symbiotic efficiency of fungal populations. Mining activity had negative effects on AM fungi and the AM recovering was more related to vegetation types than to areas rehabilitation age. Six species were found: Gigaspora margarita, Gigaspora sp., Paraglomus occultum, Glomus sp., Entrophospora colombiana and Acaulospora scrobiculata. AM fungi occurrence was favored by both grasses and Mimosa scabrella. Although Eucalyptus saligna was not a good host for these fungi, its presence associated with a well developed and diverse understore contributed for the recovering of AM fungi. The fungal populations isolated from areas with Brachiaria decumbens and Cajanus cajan and from Mimosa scabrella and Melinis minutiflora were highly efficient for bean plants growth, showing that it is possible to recover the function of AM fungi using different vegetation types. These AM fungi present a high potential of utilization for the rehabilitation of mining disturbed areas. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-02-01 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/6570 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6570 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6570/3627 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 267-276 Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 267-276 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416714972561408 |