Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas
Some isolated rhizobias, besides fixing N2, are also able to solubilize low soluble phosphates, making the P available both for plants and for themselves. Some factors like toxic Al and acidity, as in some Amazonian soils, may decrease the population of these microorganisms. The present study evalua...
| Autor principal: | Hara, Francisco Adilson dos Santos |
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| Outros Autores: | Oliveira, Luiz Antonio de |
| Grau: | Artigo |
| Idioma: | pt_BR |
| Publicado em: |
Acta Amazonica
2020
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https://repositorio.inpa.gov.br/handle/1/13427 |
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oai:repositorio:1-13427 |
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oai:repositorio:1-13427 Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas Physiological and ecological characteristics of rhizobio isolated deriving of acid and alic soils of Presidente Figueiredo, Amazonas State Hara, Francisco Adilson dos Santos Oliveira, Luiz Antonio de Leguminosae Nitrogen Acidity Aluminum And Phophate Solubilization Leguminosa Nitrogênio Acidez Alumínio Tóxico E Solubilização De Fosfato Some isolated rhizobias, besides fixing N2, are also able to solubilize low soluble phosphates, making the P available both for plants and for themselves. Some factors like toxic Al and acidity, as in some Amazonian soils, may decrease the population of these microorganisms. The present study evaluated the nodulation ability, tolerance to acidity and toxic aluminum, as well as the ability to solubilize Ca and Al phosphates of rhizobia isolated from agricultural soils the municipality of from Presidente Figueiredo, AM. Samples of soil under agricultural cultivation were collected and used as a source of inoculum for the cowpea bean. Some rhizobia isolates were tested for tolerance to acidity and toxic Al, as well as to verify their abilities to solubilize phosphates. The soil samples contained rhizobia populations capable of inducing the nodulation and improving the aerial biomass of cowpea bean under acidity (pH 4,5) and alic (2 cmol c Al.L-1) conditions. The rhizobia population from the soil samples idnetified as INPA-PF2, INPA-PF3, INPA-PF4, INPA-PF5, INPA-PF13, INPA-PF15, INPA-PF22 and INPA-PF24 promoted increases of aerial biomass when compared to the control tratment (absence of inoculum). Twenty-five percent of the isolates were tolerant to acidity and 23% to Al. The Ca phosphate was solubilized by 39% of the isolated rhizobia. However, just one isolate presented high solubilization index. The Al phosphate solubilization ability was identified in 67% of the isolates. The majority of the isolates that solubilized Ca phosphate (76.5% of the lineages) also solubilized the Al phosphate. Alguns isolados de rizóbio, além de fixarem o N2, são capazes de solubilizar fosfatos pouco solúveis, disponibilizando o P para as plantas e para si mesmos. No entanto, o Al e a acidez dos solos da Amazônia podem diminuir a população desses microrganismos. O presente trabalho avaliou a capacidade nodulífera, a tolerância à acidez e ao Al tóxico, bem como a capacidade de solubilizar fosfatos de Ca e de Al de 88 isolados de rizóbio de solos agrícolas, do município de Presidente Figueiredo, AM. Amostras de solo sob cultivos agrícolas foram coletadas e utilizadas como fontes de inóculo para plantas de feijão caupi. As amostras de solo continham isolados de rizóbio capazes de induzir a nodulação e incrementar a biomassa aérea do feijão caupi em condição ácida (pH 4,5) e álica (2cmol c Al. L-1). Os isolados de rizóbio presentes nas amostras de solo identificadas como INPA-PF2, INPA-PF3, INPA-PF4, INPA-PF5, INPA-PF13, INPA-PF15, INPA-PF22 e INPA-PF24 promoveram rendimentos de biomassa aérea superiores à testemunha. A tolerância à acidez foi apresentada por 25% dos isolados e apenas 23% apresentaram tolerância ao Al. O fosfato de Ca foi solubilizado por 39% dos isolados. No entanto, apenas um isolado apresentou alto índice de solubilização. A capacidade de solubilização de fosfato de Al foi identificada em 67% dos isolados. A maioria dos isolados de rizóbio que solubilizou fosfato de Ca (76,5% dos isolados) também solubilizou o fosfato de Al. 2020-04-24T15:23:50Z 2020-04-24T15:23:50Z 2004 Artigo https://repositorio.inpa.gov.br/handle/1/13427 10.1590/S0044-59672004000300002 pt_BR Volume 34, Número 3, Pags. 343-357 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Acta Amazonica |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
pt_BR |
| topic |
Leguminosae Nitrogen Acidity Aluminum And Phophate Solubilization Leguminosa Nitrogênio Acidez Alumínio Tóxico E Solubilização De Fosfato |
| spellingShingle |
Leguminosae Nitrogen Acidity Aluminum And Phophate Solubilization Leguminosa Nitrogênio Acidez Alumínio Tóxico E Solubilização De Fosfato Hara, Francisco Adilson dos Santos Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas |
| topic_facet |
Leguminosae Nitrogen Acidity Aluminum And Phophate Solubilization Leguminosa Nitrogênio Acidez Alumínio Tóxico E Solubilização De Fosfato |
| description |
Some isolated rhizobias, besides fixing N2, are also able to solubilize low soluble phosphates, making the P available both for plants and for themselves. Some factors like toxic Al and acidity, as in some Amazonian soils, may decrease the population of these microorganisms. The present study evaluated the nodulation ability, tolerance to acidity and toxic aluminum, as well as the ability to solubilize Ca and Al phosphates of rhizobia isolated from agricultural soils the municipality of from Presidente Figueiredo, AM. Samples of soil under agricultural cultivation were collected and used as a source of inoculum for the cowpea bean. Some rhizobia isolates were tested for tolerance to acidity and toxic Al, as well as to verify their abilities to solubilize phosphates. The soil samples contained rhizobia populations capable of inducing the nodulation and improving the aerial biomass of cowpea bean under acidity (pH 4,5) and alic (2 cmol c Al.L-1) conditions. The rhizobia population from the soil samples idnetified as INPA-PF2, INPA-PF3, INPA-PF4, INPA-PF5, INPA-PF13, INPA-PF15, INPA-PF22 and INPA-PF24 promoted increases of aerial biomass when compared to the control tratment (absence of inoculum). Twenty-five percent of the isolates were tolerant to acidity and 23% to Al. The Ca phosphate was solubilized by 39% of the isolated rhizobia. However, just one isolate presented high solubilization index. The Al phosphate solubilization ability was identified in 67% of the isolates. The majority of the isolates that solubilized Ca phosphate (76.5% of the lineages) also solubilized the Al phosphate. |
| format |
Artigo |
| author |
Hara, Francisco Adilson dos Santos |
| author2 |
Oliveira, Luiz Antonio de |
| author2Str |
Oliveira, Luiz Antonio de |
| title |
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas |
| title_short |
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas |
| title_full |
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas |
| title_fullStr |
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas |
| title_full_unstemmed |
Características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de Presidente Figueiredo, Amazonas |
| title_sort |
características fisiológicas e ecológicas de isolados de rizóbios oriundos de solos ácidos e álicos de presidente figueiredo, amazonas |
| publisher |
Acta Amazonica |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/13427 |
| _version_ |
1787142073047056384 |
| score |
11.755432 |