Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/85013 |
Resumo: | Cowpea (Vigna unguiculata) cultivation in northern and northeastern Brazil provides an excellent source of nutrients and carbohydrates for the poor and underprivileged. Production surplus leads to its consumption in other regions of Brazil and also as an export commodity. Its capacity to establish relationships with atmospheric nitrogen-fixing bacteria is crucial to the reduction of production costs and the environmental impact of nitrogen fertilizers. This study assessed the symbiotic efficiency of new strains of symbiotic nitrogen-fixing bacteria with cowpea and their tolerance to pH and aluminum. Twenty-seven strains of bacteria from different soils were evaluated under axenic conditions. These strains were compared to the following inoculant strains: INPA03-11B, UFLA03-84 and BR3267 and two controls that were not inoculated (with and without mineral nitrogen). Six strains and the three strains approved as inoculants were selected to increase the dry weight production of the aerial part (DWAP) and were tested in pots with soil that had a high-density of nitrogen-fixing native rhizobia. In this experiment, three strains (UFLA03-164, UFLA03-153, and UFLA03-154) yielded higher DWAP values. These strains grow at pH levels of 5.0, 6.0, 6.8 and at high aluminum concentration levels, reaching 10(9) CFU mL-1. In particular UFLA03-84, UFLA03-153, and UFLA03-164 tolerate up to 20 mmol c dm-3 of Al+3. Inoculation with rhizobial strains, that had been carefully selected according to their ability to nodulate and fix N2, combined with their ability to compete in soils that are acidic and contain high levels of Al, is a cheaper and more sustainable alternative that can be made available to farmers than mineral fertilizers. |
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Scientia Agrícola (Online) |
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Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria Cowpea (Vigna unguiculata) cultivation in northern and northeastern Brazil provides an excellent source of nutrients and carbohydrates for the poor and underprivileged. Production surplus leads to its consumption in other regions of Brazil and also as an export commodity. Its capacity to establish relationships with atmospheric nitrogen-fixing bacteria is crucial to the reduction of production costs and the environmental impact of nitrogen fertilizers. This study assessed the symbiotic efficiency of new strains of symbiotic nitrogen-fixing bacteria with cowpea and their tolerance to pH and aluminum. Twenty-seven strains of bacteria from different soils were evaluated under axenic conditions. These strains were compared to the following inoculant strains: INPA03-11B, UFLA03-84 and BR3267 and two controls that were not inoculated (with and without mineral nitrogen). Six strains and the three strains approved as inoculants were selected to increase the dry weight production of the aerial part (DWAP) and were tested in pots with soil that had a high-density of nitrogen-fixing native rhizobia. In this experiment, three strains (UFLA03-164, UFLA03-153, and UFLA03-154) yielded higher DWAP values. These strains grow at pH levels of 5.0, 6.0, 6.8 and at high aluminum concentration levels, reaching 10(9) CFU mL-1. In particular UFLA03-84, UFLA03-153, and UFLA03-164 tolerate up to 20 mmol c dm-3 of Al+3. Inoculation with rhizobial strains, that had been carefully selected according to their ability to nodulate and fix N2, combined with their ability to compete in soils that are acidic and contain high levels of Al, is a cheaper and more sustainable alternative that can be made available to farmers than mineral fertilizers. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/8501310.1590/S0103-90162014000300001Scientia Agricola; v. 71 n. 3 (2014); 171-180Scientia Agricola; Vol. 71 Núm. 3 (2014); 171-180Scientia Agricola; Vol. 71 No. 3 (2014); 171-1801678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/85013/87810Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessSoares, Bruno LimaFerreira, Paulo Avelar AdemarOliveira-Longatti, Silvia Maria deMarra, Leandro MarcianoRufini, MarciaAndrade, Messias José Bastos deMoreira, Fatima Maria de Souza2014-09-26T18:01:50Zoai:revistas.usp.br:article/85013Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2014-09-26T18:01:50Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
title |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
spellingShingle |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria Soares, Bruno Lima |
title_short |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
title_full |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
title_fullStr |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
title_full_unstemmed |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
title_sort |
Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria |
author |
Soares, Bruno Lima |
author_facet |
Soares, Bruno Lima Ferreira, Paulo Avelar Ademar Oliveira-Longatti, Silvia Maria de Marra, Leandro Marciano Rufini, Marcia Andrade, Messias José Bastos de Moreira, Fatima Maria de Souza |
author_role |
author |
author2 |
Ferreira, Paulo Avelar Ademar Oliveira-Longatti, Silvia Maria de Marra, Leandro Marciano Rufini, Marcia Andrade, Messias José Bastos de Moreira, Fatima Maria de Souza |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Soares, Bruno Lima Ferreira, Paulo Avelar Ademar Oliveira-Longatti, Silvia Maria de Marra, Leandro Marciano Rufini, Marcia Andrade, Messias José Bastos de Moreira, Fatima Maria de Souza |
description |
Cowpea (Vigna unguiculata) cultivation in northern and northeastern Brazil provides an excellent source of nutrients and carbohydrates for the poor and underprivileged. Production surplus leads to its consumption in other regions of Brazil and also as an export commodity. Its capacity to establish relationships with atmospheric nitrogen-fixing bacteria is crucial to the reduction of production costs and the environmental impact of nitrogen fertilizers. This study assessed the symbiotic efficiency of new strains of symbiotic nitrogen-fixing bacteria with cowpea and their tolerance to pH and aluminum. Twenty-seven strains of bacteria from different soils were evaluated under axenic conditions. These strains were compared to the following inoculant strains: INPA03-11B, UFLA03-84 and BR3267 and two controls that were not inoculated (with and without mineral nitrogen). Six strains and the three strains approved as inoculants were selected to increase the dry weight production of the aerial part (DWAP) and were tested in pots with soil that had a high-density of nitrogen-fixing native rhizobia. In this experiment, three strains (UFLA03-164, UFLA03-153, and UFLA03-154) yielded higher DWAP values. These strains grow at pH levels of 5.0, 6.0, 6.8 and at high aluminum concentration levels, reaching 10(9) CFU mL-1. In particular UFLA03-84, UFLA03-153, and UFLA03-164 tolerate up to 20 mmol c dm-3 of Al+3. Inoculation with rhizobial strains, that had been carefully selected according to their ability to nodulate and fix N2, combined with their ability to compete in soils that are acidic and contain high levels of Al, is a cheaper and more sustainable alternative that can be made available to farmers than mineral fertilizers. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06-01 |
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://www.revistas.usp.br/sa/article/view/85013 10.1590/S0103-90162014000300001 |
url |
https://www.revistas.usp.br/sa/article/view/85013 |
identifier_str_mv |
10.1590/S0103-90162014000300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/85013/87810 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 71 n. 3 (2014); 171-180 Scientia Agricola; Vol. 71 Núm. 3 (2014); 171-180 Scientia Agricola; Vol. 71 No. 3 (2014); 171-180 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1800222792053948416 |