Solubilização de fósforo por bactérias endofíticas
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4910 |
Resumo: | Soil microorganisms directly affect fertility and plant yield. Among these, inorganic phosphate solubilizers enhance phosphorus availability, and may increase phosphorus fertilizers efficiency. This work aimed to select inorganic phosphorus solubilizing bacteria as potential plant growth promoters. On the first stage, previously obtained isolates, from leaves and roots of sugarcane cultivated in Pernambuco, were tested in solid culture media with different phosphorus sources. On the second stage, three of the most solubilizing isolates, three of the least solubilizing, one considered as non-solubilizer, and a reference strain of Pseudomonas fluorescens (R-243) were tested in two liquid culture media to evaluate pH change and P solubilization over time. These isolates, and absence of inoculation, were tested in Leonard jars high and low solubility phosphorus sources, using cowpea as an indicator plant. At harvest, 44 days after planting, shoot dry mass, soluble phosphorus content on the substrate and phosphorus content on the shoot, and total shoot phosphorus were evaluated. Media composition, both for solid and liquid media, affected phosphorus solubilization ability of the endophytic bacteria. As isolates considered as low solubilizers in solid media, based on a semi-quantitative evaluation, presented high solubilization potential in liquid media, based on aquantitative determination, this evaluation system may be considered as more reliable for isolate selection. This solubilization was not directly related only to pH lowering, since different strains which lowered the media pH to the same point, had different soluble phosphorus yields. Isolates UAGC 17, 19 and 65 were the strongest solubilizers in culture media, but did not show the same efficiency when inoculated in cowpea. |
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LIRA JUNIOR, Mario de AndradeFREIRE, Maria Betânia Galvão dos SantosSILVA, Maria Luiza Ribeiro Bastos daLYRA, Maria do Carmo Catanho Pereirahttp://lattes.cnpq.br/3322930534301413SOUSA, Clayton Albuquerque de2016-06-30T12:09:30Z2010-02-26SOUSA, Clayton Albuquerque de. Solubilização de fósforo por bactérias endofíticas. 2010. 49 f. Dissertação (Programa de Pós-Graduação em Ciência do Solo) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4910Soil microorganisms directly affect fertility and plant yield. Among these, inorganic phosphate solubilizers enhance phosphorus availability, and may increase phosphorus fertilizers efficiency. This work aimed to select inorganic phosphorus solubilizing bacteria as potential plant growth promoters. On the first stage, previously obtained isolates, from leaves and roots of sugarcane cultivated in Pernambuco, were tested in solid culture media with different phosphorus sources. On the second stage, three of the most solubilizing isolates, three of the least solubilizing, one considered as non-solubilizer, and a reference strain of Pseudomonas fluorescens (R-243) were tested in two liquid culture media to evaluate pH change and P solubilization over time. These isolates, and absence of inoculation, were tested in Leonard jars high and low solubility phosphorus sources, using cowpea as an indicator plant. At harvest, 44 days after planting, shoot dry mass, soluble phosphorus content on the substrate and phosphorus content on the shoot, and total shoot phosphorus were evaluated. Media composition, both for solid and liquid media, affected phosphorus solubilization ability of the endophytic bacteria. As isolates considered as low solubilizers in solid media, based on a semi-quantitative evaluation, presented high solubilization potential in liquid media, based on aquantitative determination, this evaluation system may be considered as more reliable for isolate selection. This solubilization was not directly related only to pH lowering, since different strains which lowered the media pH to the same point, had different soluble phosphorus yields. Isolates UAGC 17, 19 and 65 were the strongest solubilizers in culture media, but did not show the same efficiency when inoculated in cowpea.Os microrganismos do solo influenciam diretamente a fertilidade e a produtividade vegetal. Dentre estes, os solubilizadores de fosfato inorgânico aumentam a disponibilidade do fósforo e podem aumentar a eficiência de fertilizantes fosfatados. Este trabalho visou selecionar bactérias solubilizadoras de fosfato inorgânico como potencial promotoras de crescimento vegetal. Na primeira etapa, isolados previamente obtidos, a partir de folhas e raízes de cana de açúcar cultivada no Estado de Pernambuco, foram testados em meios de cultura sólidos com diferentes fontes de fósforo. Na segunda etapa, três dos isolados mais solubilizadores, três considerados pouco solubilizadores, um isolado não solubilizador, e uma estirpe padrão Pseudomonas fluorescens (R-243) foram testados em dois meios de cultura líquidos para avaliar modificação do pH e solubilização de P ao longo do tempo. Os mesmos isolados, além da ausência de inoculação, foram testados em vasos de Leonard com fontes de fósforo de alta e baixa solubilidade, utilizando feijão caupi como planta indicadora. Na colheita, aos 44 dias após o plantio, foi avaliada a massa seca da parte aérea, o teor de fósforo solúvel no substrato e na parte aérea e o conteúdo de fósforo na parte aérea. A composição do meio, tanto sólido quanto líquido, influenciou na capacidade de solubilização de fosfato pelas bactérias endofíticas. Como isolados considerados pouco solubilizadores em meio sólido,baseado em avaliação semi-quantitativa, apresentaram alto potencial de solubilização no meio líquido, com base em determinação, podemos considerar que o meio líquido apresenta resultados mais confiáveis para a seleção de isolados. Esta solubilização não está diretamente relacionada apenas com a redução do pH, já que diferentes isolados, que baixaram o pH para o mesmo ponto, apresentaram diferentes solubilizações de P. Os isolados UAGC 17, 19 e 65 foram os solubilizadores mais fortes em meio de cultura, porém não demonstraram a mesma eficiência quando inoculados em feijão caupi.Submitted by (lucia.rodrigues@ufrpe.br) on 2016-06-30T12:09:30Z No. of bitstreams: 1 Clayton Albuquerque de Souza .pdf: 989506 bytes, checksum: 69714a0fd3c1b84ee85d4ef8c32cf324 (MD5)Made available in DSpace on 2016-06-30T12:09:30Z (GMT). No. of bitstreams: 1 Clayton Albuquerque de Souza .pdf: 989506 bytes, checksum: 69714a0fd3c1b84ee85d4ef8c32cf324 (MD5) Previous issue date: 2010-02-26Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqapplication/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Ciência do SoloUFRPEBrasilDepartamento de AgronomiaBactéria endofíticaMicroorganismoSolubilização de fosfatoAGRONOMIA::CIENCIA DO SOLOSolubilização de fósforo por bactérias endofíticasSolubilization of phosphorus by endofhytic bacteriainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis8551734419043507650600600600600-6800553879972229205-5919840527232375671-2555911436985713659info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPELICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/4910/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51ORIGINALClayton Albuquerque de Souza .pdfClayton Albuquerque de Souza .pdfapplication/pdf989506http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/4910/2/Clayton+Albuquerque+de+Souza+.pdf69714a0fd3c1b84ee85d4ef8c32cf324MD52tede2/49102019-09-16 10:07:16.293oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2019-09-16T13:07:16Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Solubilização de fósforo por bactérias endofíticas |
dc.title.alternative.eng.fl_str_mv |
Solubilization of phosphorus by endofhytic bacteria |
title |
Solubilização de fósforo por bactérias endofíticas |
spellingShingle |
Solubilização de fósforo por bactérias endofíticas SOUSA, Clayton Albuquerque de Bactéria endofítica Microorganismo Solubilização de fosfato AGRONOMIA::CIENCIA DO SOLO |
title_short |
Solubilização de fósforo por bactérias endofíticas |
title_full |
Solubilização de fósforo por bactérias endofíticas |
title_fullStr |
Solubilização de fósforo por bactérias endofíticas |
title_full_unstemmed |
Solubilização de fósforo por bactérias endofíticas |
title_sort |
Solubilização de fósforo por bactérias endofíticas |
author |
SOUSA, Clayton Albuquerque de |
author_facet |
SOUSA, Clayton Albuquerque de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
LIRA JUNIOR, Mario de Andrade |
dc.contributor.referee1.fl_str_mv |
FREIRE, Maria Betânia Galvão dos Santos |
dc.contributor.referee2.fl_str_mv |
SILVA, Maria Luiza Ribeiro Bastos da |
dc.contributor.referee3.fl_str_mv |
LYRA, Maria do Carmo Catanho Pereira |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3322930534301413 |
dc.contributor.author.fl_str_mv |
SOUSA, Clayton Albuquerque de |
contributor_str_mv |
LIRA JUNIOR, Mario de Andrade FREIRE, Maria Betânia Galvão dos Santos SILVA, Maria Luiza Ribeiro Bastos da LYRA, Maria do Carmo Catanho Pereira |
dc.subject.por.fl_str_mv |
Bactéria endofítica Microorganismo Solubilização de fosfato |
topic |
Bactéria endofítica Microorganismo Solubilização de fosfato AGRONOMIA::CIENCIA DO SOLO |
dc.subject.cnpq.fl_str_mv |
AGRONOMIA::CIENCIA DO SOLO |
description |
Soil microorganisms directly affect fertility and plant yield. Among these, inorganic phosphate solubilizers enhance phosphorus availability, and may increase phosphorus fertilizers efficiency. This work aimed to select inorganic phosphorus solubilizing bacteria as potential plant growth promoters. On the first stage, previously obtained isolates, from leaves and roots of sugarcane cultivated in Pernambuco, were tested in solid culture media with different phosphorus sources. On the second stage, three of the most solubilizing isolates, three of the least solubilizing, one considered as non-solubilizer, and a reference strain of Pseudomonas fluorescens (R-243) were tested in two liquid culture media to evaluate pH change and P solubilization over time. These isolates, and absence of inoculation, were tested in Leonard jars high and low solubility phosphorus sources, using cowpea as an indicator plant. At harvest, 44 days after planting, shoot dry mass, soluble phosphorus content on the substrate and phosphorus content on the shoot, and total shoot phosphorus were evaluated. Media composition, both for solid and liquid media, affected phosphorus solubilization ability of the endophytic bacteria. As isolates considered as low solubilizers in solid media, based on a semi-quantitative evaluation, presented high solubilization potential in liquid media, based on aquantitative determination, this evaluation system may be considered as more reliable for isolate selection. This solubilization was not directly related only to pH lowering, since different strains which lowered the media pH to the same point, had different soluble phosphorus yields. Isolates UAGC 17, 19 and 65 were the strongest solubilizers in culture media, but did not show the same efficiency when inoculated in cowpea. |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-02-26 |
dc.date.accessioned.fl_str_mv |
2016-06-30T12:09:30Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SOUSA, Clayton Albuquerque de. Solubilização de fósforo por bactérias endofíticas. 2010. 49 f. Dissertação (Programa de Pós-Graduação em Ciência do Solo) - Universidade Federal Rural de Pernambuco, Recife. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4910 |
identifier_str_mv |
SOUSA, Clayton Albuquerque de. Solubilização de fósforo por bactérias endofíticas. 2010. 49 f. Dissertação (Programa de Pós-Graduação em Ciência do Solo) - Universidade Federal Rural de Pernambuco, Recife. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4910 |
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por |
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por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Federal Rural de Pernambuco |
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UFRPE |
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Universidade Federal Rural de Pernambuco |
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