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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
19/11/2014 |
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Data da última atualização: |
04/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VARON-LOPEZ, M.; DIAS, A. C. F.; FASANELLA, C. C.; DURRER, A.; MELO, I. S. de; KURAMAE, E. E.; ANDREOTE, F. D. |
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Afiliação: |
MARYEIMY VARON-LOPEZ, ESALQ-USP; ARMANDO CAVALCANTE FRANCO DIAS, ESALQ-USP; CRISTIANE CIPOLLA FASANELLA, ESALQ-USP; ADEMIR DURRER, ESALQ-USP; ITAMAR SOARES DE MELO, CNPMA; EIKO EURYA KURAMAE, Netherlands Institute of Ecology; FERNANDO DINI ANDREOTE. |
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Título: |
Sulphur-oxidizing and sulphate-reducing communities in Brazilian mangrove sediments. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Environmental Microbiology, Oxford, v. 16, n. 3, p. 845-855, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Mangrove soils are anaerobic environments rich in sulphate and organic matter. Although the sulphur cycle is one of the major actors in this ecosystem, little is known regarding the sulphur bacteria communities in mangrove soils. We investigated the abundance, composition and diversity of sulphur-oxidizing (SOB) and sulphate-reducing (SRB) bacteria in sediments from three Brazilian mangrove communities: two contaminated, one with oil (OilMgv) and one with urban waste and sludge (AntMgv), and one pristine (PrsMgv). The community structures were assessed using quantitative real-time polymerase chain reaction (qPCR), polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and clone libraries, using genes for the enzymes adenosine-5'-phosphosulphate reductase (aprA) and sulphite reductase (Dsr) (dsrB). The abundance for qPCR showed the ratio dsrB/aprA to be variable among mangroves and higher according to the gradient observed for oil contamination in the OilMgv. The PCR-DGGE patterns analysed by Nonmetric Multidimensional Scaling revealed differences among the structures of the three mangrove communities. The clone libraries showed that Betaproteobacteria, Gammaproteobacteria and Deltaproteobacteria were the most abundant groups associated with sulphur cycling in mangrove sediments. We conclude that the microbial SOB and SRB communities in mangrove soils are different in each mangrove forest and that such microbial communities could possibly be used as a proxy for contamination in mangrove forests. MenosAbstract: Mangrove soils are anaerobic environments rich in sulphate and organic matter. Although the sulphur cycle is one of the major actors in this ecosystem, little is known regarding the sulphur bacteria communities in mangrove soils. We investigated the abundance, composition and diversity of sulphur-oxidizing (SOB) and sulphate-reducing (SRB) bacteria in sediments from three Brazilian mangrove communities: two contaminated, one with oil (OilMgv) and one with urban waste and sludge (AntMgv), and one pristine (PrsMgv). The community structures were assessed using quantitative real-time polymerase chain reaction (qPCR), polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and clone libraries, using genes for the enzymes adenosine-5'-phosphosulphate reductase (aprA) and sulphite reductase (Dsr) (dsrB). The abundance for qPCR showed the ratio dsrB/aprA to be variable among mangroves and higher according to the gradient observed for oil contamination in the OilMgv. The PCR-DGGE patterns analysed by Nonmetric Multidimensional Scaling revealed differences among the structures of the three mangrove communities. The clone libraries showed that Betaproteobacteria, Gammaproteobacteria and Deltaproteobacteria were the most abundant groups associated with sulphur cycling in mangrove sediments. We conclude that the microbial SOB and SRB communities in mangrove soils are different in each mangrove forest and that such microbial communities could possibly be us... Mostrar Tudo |
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Thesagro: |
Bactéria; Enxofre; Mangue; Sulfato. |
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Thesaurus Nal: |
Mangrove soils; Metabolism; Polluted soils; Sulfate-reducing bacteria; Sulfur. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02386naa a2200301 a 4500
001 2000536
005 2014-12-04
008 2014 bl uuuu u00u1 u #d
100 1 $aVARON-LOPEZ, M.
245 $aSulphur-oxidizing and sulphate-reducing communities in Brazilian mangrove sediments.$h[electronic resource]
260 $c2014
520 $aAbstract: Mangrove soils are anaerobic environments rich in sulphate and organic matter. Although the sulphur cycle is one of the major actors in this ecosystem, little is known regarding the sulphur bacteria communities in mangrove soils. We investigated the abundance, composition and diversity of sulphur-oxidizing (SOB) and sulphate-reducing (SRB) bacteria in sediments from three Brazilian mangrove communities: two contaminated, one with oil (OilMgv) and one with urban waste and sludge (AntMgv), and one pristine (PrsMgv). The community structures were assessed using quantitative real-time polymerase chain reaction (qPCR), polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and clone libraries, using genes for the enzymes adenosine-5'-phosphosulphate reductase (aprA) and sulphite reductase (Dsr) (dsrB). The abundance for qPCR showed the ratio dsrB/aprA to be variable among mangroves and higher according to the gradient observed for oil contamination in the OilMgv. The PCR-DGGE patterns analysed by Nonmetric Multidimensional Scaling revealed differences among the structures of the three mangrove communities. The clone libraries showed that Betaproteobacteria, Gammaproteobacteria and Deltaproteobacteria were the most abundant groups associated with sulphur cycling in mangrove sediments. We conclude that the microbial SOB and SRB communities in mangrove soils are different in each mangrove forest and that such microbial communities could possibly be used as a proxy for contamination in mangrove forests.
650 $aMangrove soils
650 $aMetabolism
650 $aPolluted soils
650 $aSulfate-reducing bacteria
650 $aSulfur
650 $aBactéria
650 $aEnxofre
650 $aMangue
650 $aSulfato
700 1 $aDIAS, A. C. F.
700 1 $aFASANELLA, C. C.
700 1 $aDURRER, A.
700 1 $aMELO, I. S. de
700 1 $aKURAMAE, E. E.
700 1 $aANDREOTE, F. D.
773 $tEnvironmental Microbiology, Oxford$gv. 16, n. 3, p. 845-855, 2014.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
07/12/2022 |
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Data da última atualização: |
07/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MATTOS, M. L. T.; VALGAS, R. A.; MARTINS, J. F. da S. |
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Afiliação: |
MARIA LAURA TURINO MATTOS, CPACT; RICARDO ALEXANDRE VALGAS, CPACT; JOSE FRANCISCO DA SILVA MARTINS, CPACT. |
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Título: |
Evaluation of the Agronomic Efficiency of Azospirillum brasilense Strains Ab-V5 and Ab-V6 in Flood-Irrigated Rice. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Agronomy, v. 12, 3047, 2022. |
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Páginas: |
17 p. |
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ISSN: |
2073-4395 |
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DOI: |
https://doi.org/10.3390/agronomy12123047 |
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Idioma: |
Inglês |
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Conteúdo: |
The rational use of nitrogen fertilization is fundamental, not only to increase recovery efficiency, but also to increase crop productivity and reduce the production costs and risks of environmental impacts. In the State of Rio Grande do Sul in Brazil, irrigated rice productivity can surpass 8 tonne ·ha-1 as a result of the technification of the crop and favorable environmental conditions, yet there is great variability in the agronomic efficiency of chemical nitrogen fertilizers, which rarely exceed 50% of the applied dose. Biological nitrogen fixation is one of the technological alternatives for reducing the use of nitrogen in this crop. In this study, the agronomic efficiency ofAzospirillum brasilense strains Ab-V5 and Ab-V6 in terms of biological nitrogen fixation in flood-irrigated rice cultivars in a lowland agroecosystem was evaluated through five field experiments. A. brasilense combined with reduced nitrogen fertilization (reduction of 30 kg N ·ha−1) increased the dry mass of the aerial part of rice plants by 3.2%, and promoted an increase in N concentration in stems and leaves and in the N content exported by grains by 43% and 27.5%, respectively, in relation to the absence of N and inoculant, and promoted an average increase of 30% in rice production. |
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Thesagro: |
Bactéria; Carbono; Crescimento; Fixação de Nitrogênio; Inoculação; Oryza Sativa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149314/1/Revista-Agronomy-Artigo-FBN-Arroz.pdf
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Marc: |
LEADER 02078naa a2200253 a 4500
001 2149314
005 2022-12-07
008 2022 bl uuuu u00u1 u #d
022 $a2073-4395
024 7 $ahttps://doi.org/10.3390/agronomy12123047$2DOI
100 1 $aMATTOS, M. L. T.
245 $aEvaluation of the Agronomic Efficiency of Azospirillum brasilense Strains Ab-V5 and Ab-V6 in Flood-Irrigated Rice.$h[electronic resource]
260 $c2022
300 $a17 p.
520 $aThe rational use of nitrogen fertilization is fundamental, not only to increase recovery efficiency, but also to increase crop productivity and reduce the production costs and risks of environmental impacts. In the State of Rio Grande do Sul in Brazil, irrigated rice productivity can surpass 8 tonne ·ha-1 as a result of the technification of the crop and favorable environmental conditions, yet there is great variability in the agronomic efficiency of chemical nitrogen fertilizers, which rarely exceed 50% of the applied dose. Biological nitrogen fixation is one of the technological alternatives for reducing the use of nitrogen in this crop. In this study, the agronomic efficiency ofAzospirillum brasilense strains Ab-V5 and Ab-V6 in terms of biological nitrogen fixation in flood-irrigated rice cultivars in a lowland agroecosystem was evaluated through five field experiments. A. brasilense combined with reduced nitrogen fertilization (reduction of 30 kg N ·ha−1) increased the dry mass of the aerial part of rice plants by 3.2%, and promoted an increase in N concentration in stems and leaves and in the N content exported by grains by 43% and 27.5%, respectively, in relation to the absence of N and inoculant, and promoted an average increase of 30% in rice production.
650 $aBactéria
650 $aCarbono
650 $aCrescimento
650 $aFixação de Nitrogênio
650 $aInoculação
650 $aOryza Sativa
700 1 $aVALGAS, R. A.
700 1 $aMARTINS, J. F. da S.
773 $tAgronomy$gv. 12, 3047, 2022.
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