Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium

Detalhes bibliográficos
Autor(a) principal: Filho, Germano Nunes Silva
Data de Publicação: 2001
Outros Autores: Vidor, Caio
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/6284
Resumo: Twenty-one isolates of phosphate solubilizing microorganisms (Bacillus, Pseudomonas, Enterobacteriaceae, Penicillium, Aspergillus and Paecilomyces) were evaluated for their solubilizing capacity and potential in broth media (Glucose-Yeast Extract) amended with different types of phosphates (Ca, Al or Fe), in the presence of N sources (peptone, ammonium and nitrate) as well as concentrations of Fe, Ca and potassium. Microbial growth and phosphate solubilizing activity varied according to the microorganism and the nutrient supplied. Ammonium increased solubilization activity of six isolates and three of these solubilized only in this source. Nitrate decreased solubilizing activity and in some instances, completely inhibited solubilization. In general, the solubilizing activity of microbial isolates was not affected by different concentrations of iron. Low concentrations of Ca and K limited the growth of five isolates that characteristically form large colonies (Aspergillus). Solubilization of calcium phosphate was increased by two of these isolates. Variations in the phosphate solubilizing capacity and potential of microorganisms as a response to the conditions in the growth medium indicate that the process occurs with variable efficiency or suggest the presence of different mechanisms of solubilization.
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spelling Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassiumAtividade de microrganismos solubilizadores de fosfatos na presença de nitrogênio, ferro, cálcio e potássiophosphorus; soil; microorganisms; solubilization; nitrate; ammoniumfósforo; microrganismos do solo; solubilização; nitrato; amônioTwenty-one isolates of phosphate solubilizing microorganisms (Bacillus, Pseudomonas, Enterobacteriaceae, Penicillium, Aspergillus and Paecilomyces) were evaluated for their solubilizing capacity and potential in broth media (Glucose-Yeast Extract) amended with different types of phosphates (Ca, Al or Fe), in the presence of N sources (peptone, ammonium and nitrate) as well as concentrations of Fe, Ca and potassium. Microbial growth and phosphate solubilizing activity varied according to the microorganism and the nutrient supplied. Ammonium increased solubilization activity of six isolates and three of these solubilized only in this source. Nitrate decreased solubilizing activity and in some instances, completely inhibited solubilization. In general, the solubilizing activity of microbial isolates was not affected by different concentrations of iron. Low concentrations of Ca and K limited the growth of five isolates that characteristically form large colonies (Aspergillus). Solubilization of calcium phosphate was increased by two of these isolates. Variations in the phosphate solubilizing capacity and potential of microorganisms as a response to the conditions in the growth medium indicate that the process occurs with variable efficiency or suggest the presence of different mechanisms of solubilization.A capacidade e o potencial de solubilização de 21 isolados de microrganismos solubilizadores de fosfatos (Bacillus, Pseudomonas, Enterobacteriaceae, Penicillium, Aspergillus e Paecilomyces) foram avaliados em cultivos em meio de cultura Glicose-Extrato de Levedura contendo diferentes fosfatos (Ca, Al ou Fe), na presença de fontes de N (peptona, amônio e nitrato) e teores de Fe, Ca e K. O crescimento e a atividade solubilizadora variaram em função do tipo de microrganismo e dos fatores nutricionais. Em relação às fontes de N, a presença de amônio favoreceu a solubilização em seis isolados; destes, três solubilizaram somente nesta fonte. O nitrato diminuiu a atividade solubilizadora, reduzindo ou inibindo a solubilização. Para a maioria dos microrganismos, a atividade solubilizadora não foi afetada pelas variações nos teores de ferro. Baixos teores de Ca e K limitaram o crescimento de cinco isolados que apresentam características de amplo crescimento (Aspergillus). Em dois desses isolados, a solubilização de fosfato de Ca foi favorecida. Variações na capacidade e no potencial de solubilização dos microrganismos, em resposta às condições do meio de cultura, indicam que o processo ocorre com eficiência variável ou sugerem a presença de diferentes mecanismos de solubilização.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFilho, Germano Nunes SilvaVidor, Caio2001-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6284Pesquisa Agropecuaria Brasileira; v.36, n.12, dez. 2001; 1495-1508Pesquisa Agropecuária Brasileira; v.36, n.12, dez. 2001; 1495-15081678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6284/3349info:eu-repo/semantics/openAccess2010-08-06T16:54:29Zoai:ojs.seer.sct.embrapa.br:article/6284Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-06T16:54:29Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
Atividade de microrganismos solubilizadores de fosfatos na presença de nitrogênio, ferro, cálcio e potássio
title Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
spellingShingle Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
Filho, Germano Nunes Silva
phosphorus; soil; microorganisms; solubilization; nitrate; ammonium
fósforo; microrganismos do solo; solubilização; nitrato; amônio
title_short Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
title_full Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
title_fullStr Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
title_full_unstemmed Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
title_sort Phosphate solubilizing activity of microorganisms in the presence of nitrogen, iron, calcium and potassium
author Filho, Germano Nunes Silva
author_facet Filho, Germano Nunes Silva
Vidor, Caio
author_role author
author2 Vidor, Caio
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Filho, Germano Nunes Silva
Vidor, Caio
dc.subject.por.fl_str_mv phosphorus; soil; microorganisms; solubilization; nitrate; ammonium
fósforo; microrganismos do solo; solubilização; nitrato; amônio
topic phosphorus; soil; microorganisms; solubilization; nitrate; ammonium
fósforo; microrganismos do solo; solubilização; nitrato; amônio
description Twenty-one isolates of phosphate solubilizing microorganisms (Bacillus, Pseudomonas, Enterobacteriaceae, Penicillium, Aspergillus and Paecilomyces) were evaluated for their solubilizing capacity and potential in broth media (Glucose-Yeast Extract) amended with different types of phosphates (Ca, Al or Fe), in the presence of N sources (peptone, ammonium and nitrate) as well as concentrations of Fe, Ca and potassium. Microbial growth and phosphate solubilizing activity varied according to the microorganism and the nutrient supplied. Ammonium increased solubilization activity of six isolates and three of these solubilized only in this source. Nitrate decreased solubilizing activity and in some instances, completely inhibited solubilization. In general, the solubilizing activity of microbial isolates was not affected by different concentrations of iron. Low concentrations of Ca and K limited the growth of five isolates that characteristically form large colonies (Aspergillus). Solubilization of calcium phosphate was increased by two of these isolates. Variations in the phosphate solubilizing capacity and potential of microorganisms as a response to the conditions in the growth medium indicate that the process occurs with variable efficiency or suggest the presence of different mechanisms of solubilization.
publishDate 2001
dc.date.none.fl_str_mv 2001-12-01
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/6284
url https://seer.sct.embrapa.br/index.php/pab/article/view/6284
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/6284/3349
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.36, n.12, dez. 2001; 1495-1508
Pesquisa Agropecuária Brasileira; v.36, n.12, dez. 2001; 1495-1508
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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