Activity and microbial populations involved in sulfur cycling in soils with different vegetations
Autor(a) principal: | |
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Data de Publicação: | 2002 |
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/6527 |
Resumo: | The objective of this work was to assess the microbial populations and its activities involved in the S cycle, of virgin and cultivated soils, and its relationships with the different fractions of S in the soil. The influence of soils with different vegetations on microbiological and biochemical characteristics was investigated. Out of the different populations of microorganisms examined, only the S0-oxidizing autotrophic bacteria and thiosulfate-oxidizing heterotrophs that represented less than 0.1% of the total bacteria were found. The average of autotrophs was double that of the heterotrophs. The highest counts of total bacteria, autotrophic and heterotrophic microorganisms were found in corn, pasture and forest soils, respectively. Arylsulfatase activity was greater in forest soil, and rhodanese activity in pasture soil. Arylsulfatase correlated with heterotrophic populations, organic C, total S, organic S, organic matter and soil moisture; and rhodanese with organic C, total S, and organic S. The contents of organic S and sulfate were of 94-98% and 2-6% of total S, respectively. The major content of total S and organic S was found in the forest soil. Total S correlated significantly with organic S, moisture and organic matter and organic S with organic matter. |
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Activity and microbial populations involved in sulfur cycling in soils with different vegetationsAtividade e população microbiana envolvida nas transformações do enxofre em solos com diferentes vegetaçõesbacteria; oxidation; arylsulfatase; rhodanesebactéria; oxidação; arilsulfatase; rodanase The objective of this work was to assess the microbial populations and its activities involved in the S cycle, of virgin and cultivated soils, and its relationships with the different fractions of S in the soil. The influence of soils with different vegetations on microbiological and biochemical characteristics was investigated. Out of the different populations of microorganisms examined, only the S0-oxidizing autotrophic bacteria and thiosulfate-oxidizing heterotrophs that represented less than 0.1% of the total bacteria were found. The average of autotrophs was double that of the heterotrophs. The highest counts of total bacteria, autotrophic and heterotrophic microorganisms were found in corn, pasture and forest soils, respectively. Arylsulfatase activity was greater in forest soil, and rhodanese activity in pasture soil. Arylsulfatase correlated with heterotrophic populations, organic C, total S, organic S, organic matter and soil moisture; and rhodanese with organic C, total S, and organic S. The contents of organic S and sulfate were of 94-98% and 2-6% of total S, respectively. The major content of total S and organic S was found in the forest soil. Total S correlated significantly with organic S, moisture and organic matter and organic S with organic matter.O objetivo deste trabalho foi determinar as populações microbianas e suas atividades envolvidas no ciclo do S, de solos virgem e cultivado, e as suas relações com as diferentes frações de S no solo. Das populações de microrganismos pesquisados, apenas foram encontradas as bactérias autótrofas oxidantes de S0 em pH 5,0 e as heterótrofas oxidantes de tiossulfato, que representaram menos de 0,1% das bactérias totais. A média das bactérias autótrofas foi o dobro das heterótrofas. As maiores contagens de bactérias totais, autótrofas e heterótrofas foram encontradas nos solos com milho, de pastagem e de floresta integrada, respectivamente. A atividade da arilsulfatase foi maior em solo de floresta integrada e a da rodanase em solo de pastagem. A arilsulfatase correlacionou com as populações de heterotróficos, C orgânico, S total, S orgânico, matéria orgânica e umidade do solo; e a rodanase com C orgânico, S total e S orgânico. Os teores de S orgânico e sulfato foram de 94-98% e 2-6% do S total, respectivamente. Os maiores teores de S total e orgânico foram encontrados no solo de floresta integrada. O S total correlacionou com o S orgânico, umidade e matéria orgânica, e o S orgânico com a matéria orgânica.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPinto, Cristiane Rêgo OliveiraNahas, Ely2002-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6527Pesquisa Agropecuaria Brasileira; v.37, n.12, dez. 2002; 1751-1756Pesquisa Agropecuária Brasileira; v.37, n.12, dez. 2002; 1751-17561678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6527/3584info:eu-repo/semantics/openAccess2010-08-24T12:44:47Zoai:ojs.seer.sct.embrapa.br:article/6527Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-24T12:44:47Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations Atividade e população microbiana envolvida nas transformações do enxofre em solos com diferentes vegetações |
title |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations |
spellingShingle |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations Pinto, Cristiane Rêgo Oliveira bacteria; oxidation; arylsulfatase; rhodanese bactéria; oxidação; arilsulfatase; rodanase |
title_short |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations |
title_full |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations |
title_fullStr |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations |
title_full_unstemmed |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations |
title_sort |
Activity and microbial populations involved in sulfur cycling in soils with different vegetations |
author |
Pinto, Cristiane Rêgo Oliveira |
author_facet |
Pinto, Cristiane Rêgo Oliveira Nahas, Ely |
author_role |
author |
author2 |
Nahas, Ely |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Pinto, Cristiane Rêgo Oliveira Nahas, Ely |
dc.subject.por.fl_str_mv |
bacteria; oxidation; arylsulfatase; rhodanese bactéria; oxidação; arilsulfatase; rodanase |
topic |
bacteria; oxidation; arylsulfatase; rhodanese bactéria; oxidação; arilsulfatase; rodanase |
description |
The objective of this work was to assess the microbial populations and its activities involved in the S cycle, of virgin and cultivated soils, and its relationships with the different fractions of S in the soil. The influence of soils with different vegetations on microbiological and biochemical characteristics was investigated. Out of the different populations of microorganisms examined, only the S0-oxidizing autotrophic bacteria and thiosulfate-oxidizing heterotrophs that represented less than 0.1% of the total bacteria were found. The average of autotrophs was double that of the heterotrophs. The highest counts of total bacteria, autotrophic and heterotrophic microorganisms were found in corn, pasture and forest soils, respectively. Arylsulfatase activity was greater in forest soil, and rhodanese activity in pasture soil. Arylsulfatase correlated with heterotrophic populations, organic C, total S, organic S, organic matter and soil moisture; and rhodanese with organic C, total S, and organic S. The contents of organic S and sulfate were of 94-98% and 2-6% of total S, respectively. The major content of total S and organic S was found in the forest soil. Total S correlated significantly with organic S, moisture and organic matter and organic S with organic matter. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-12-01 |
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/6527 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6527 |
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/6527/3584 |
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.37, n.12, dez. 2002; 1751-1756 Pesquisa Agropecuária Brasileira; v.37, n.12, dez. 2002; 1751-1756 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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