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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
17/11/2003 |
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Data da última atualização: |
09/05/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KING, G. M.; HUNGRIA, M. |
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Afiliação: |
UNIVERSITY OF MAINE; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Soil-atmosphere CO exchanges and microbial biogeochemistry of CO transformations in a brazilian agricultural ecosystem. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Applied and Environmental Microbiology, v. 68, n. 9, p. 4480-4485, Sept. 2002. |
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DOI: |
10.1128/AEM.68.9.4480-4485.2002 |
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Idioma: |
Inglês |
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Conteúdo: |
Although anthropogenic land use has major impacts on the exchange of soil and atmosphere gas in general, relatively little is known about its impacts on carbon monoxide. We compared soil-atmosphere CO exchanges as a function of land use, crop type, and tillage treatment on an experimental farm in Parãna, Brazil, that is representative of regionally important agricultural ecosystems. Our results showed that cultivated soils consumed CO at rates between 3 and 6 mg of CO m−2 day−1, with no statistically significant effect of tillage method or crop. However, CO exchange for a pasture soil was near zero, and an unmanaged woodlot emitted CO at a rate of 9 mg of CO m−2 day−1. Neither nitrite, aluminum sulfate, nor methyl fluoride additions affected CO consumption by tilled or untilled soils from soybean plots, indicating that CO oxidation did not depend on ammonia oxidizers and that CO oxidation patterns differed in part from patterns reported for forest soils. The apparent Km for CO uptake, 5 to 11 ppm, was similar to values reported for temperate forest soils; Vmax values, approximately 1 μg of CO g (dry weight)−1 h−1, were comparable for woodlot and cultivated soils in spite of the fact that the latter consumed CO under ambient conditions. Short-term (24-h) exposure to elevated levels of CO (10% CO) partially inhibited uptake at lower concentrations (i.e., 100 ppm), suggesting that the sensitivity to CO of microbial populations that are active in situ differs from that of known carboxydotrophs. Soil-free soybean and corn roots consumed CO when they were incubated with 100-ppm concentrations and produced CO when they were incubated with ambient concentrations. These results document for the first time a role for cultivated plant roots in the dynamics of CO in an agricultural ecosystem. MenosAlthough anthropogenic land use has major impacts on the exchange of soil and atmosphere gas in general, relatively little is known about its impacts on carbon monoxide. We compared soil-atmosphere CO exchanges as a function of land use, crop type, and tillage treatment on an experimental farm in Parãna, Brazil, that is representative of regionally important agricultural ecosystems. Our results showed that cultivated soils consumed CO at rates between 3 and 6 mg of CO m−2 day−1, with no statistically significant effect of tillage method or crop. However, CO exchange for a pasture soil was near zero, and an unmanaged woodlot emitted CO at a rate of 9 mg of CO m−2 day−1. Neither nitrite, aluminum sulfate, nor methyl fluoride additions affected CO consumption by tilled or untilled soils from soybean plots, indicating that CO oxidation did not depend on ammonia oxidizers and that CO oxidation patterns differed in part from patterns reported for forest soils. The apparent Km for CO uptake, 5 to 11 ppm, was similar to values reported for temperate forest soils; Vmax values, approximately 1 μg of CO g (dry weight)−1 h−1, were comparable for woodlot and cultivated soils in spite of the fact that the latter consumed CO under ambient conditions. Short-term (24-h) exposure to elevated levels of CO (10% CO) partially inhibited uptake at lower concentrations (i.e., 100 ppm), suggesting that the sensitivity to CO of microbial populations that are active in situ differs from that of known... Mostrar Tudo |
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Thesagro: |
Ecossistema. |
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Thesaurus Nal: |
Ecosystems. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02404naa a2200169 a 4500
001 1450140
005 2025-05-09
008 2002 bl uuuu u00u1 u #d
024 7 $a10.1128/AEM.68.9.4480-4485.2002$2DOI
100 1 $aKING, G. M.
245 $aSoil-atmosphere CO exchanges and microbial biogeochemistry of CO transformations in a brazilian agricultural ecosystem.$h[electronic resource]
260 $c2002
520 $aAlthough anthropogenic land use has major impacts on the exchange of soil and atmosphere gas in general, relatively little is known about its impacts on carbon monoxide. We compared soil-atmosphere CO exchanges as a function of land use, crop type, and tillage treatment on an experimental farm in Parãna, Brazil, that is representative of regionally important agricultural ecosystems. Our results showed that cultivated soils consumed CO at rates between 3 and 6 mg of CO m−2 day−1, with no statistically significant effect of tillage method or crop. However, CO exchange for a pasture soil was near zero, and an unmanaged woodlot emitted CO at a rate of 9 mg of CO m−2 day−1. Neither nitrite, aluminum sulfate, nor methyl fluoride additions affected CO consumption by tilled or untilled soils from soybean plots, indicating that CO oxidation did not depend on ammonia oxidizers and that CO oxidation patterns differed in part from patterns reported for forest soils. The apparent Km for CO uptake, 5 to 11 ppm, was similar to values reported for temperate forest soils; Vmax values, approximately 1 μg of CO g (dry weight)−1 h−1, were comparable for woodlot and cultivated soils in spite of the fact that the latter consumed CO under ambient conditions. Short-term (24-h) exposure to elevated levels of CO (10% CO) partially inhibited uptake at lower concentrations (i.e., 100 ppm), suggesting that the sensitivity to CO of microbial populations that are active in situ differs from that of known carboxydotrophs. Soil-free soybean and corn roots consumed CO when they were incubated with 100-ppm concentrations and produced CO when they were incubated with ambient concentrations. These results document for the first time a role for cultivated plant roots in the dynamics of CO in an agricultural ecosystem.
650 $aEcosystems
650 $aEcossistema
700 1 $aHUNGRIA, M.
773 $tApplied and Environmental Microbiology$gv. 68, n. 9, p. 4480-4485, Sept. 2002.
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Registro original: |
Embrapa Soja (CNPSO) |
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| Registros recuperados : 10 | |
| 3. |  | YAMADA, M. M.; FALEIRO, F. G.; CLEMENT, D. P. L.; LOPES, U. V.; PIRES, J. L.; MELO, G. R. P. Relationship between molecular markers and incompatibility in Theobroma cacao L. Agrotropica, v. 22, n. 2, p. 71-74, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Cerrados. |
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| 4. | | SANTOS, E. S. L. dos; CERQUEIRA-SILVA, C. B. M.; CLEMENT, D. P. L.; LUZ, E. D. M. N. Identificação de resistência genética do cacaueiro à podridão-parda. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 4, p. 413-416, abr. 2009 Notas Científicas. Título em inglês: Identifi cation of cacao genetic resistance to black pod disease.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | MOURNET, P.; ALBUQUERQUE, P. S. B. de; ALVES, R. M.; SILVA-WERNECK, J. O.; RIVALLAN, R.; MARCELLINO, L. H.; CLÉMENT, D. A reference high-density genetic map of Theobroma grandiflorum (Willd. ex Spreng) and QTL detection for resistance to witches' broom disease (Moniliophthora perniciosa). Tree Genetics & Genomes, v. 16, article 89, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Recursos Genéticos e Biotecnologia. |
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| 6. | | FALEIRO, F. G.; PEREIRA, M. G.; CLEMENT, D.; LOPES, U. V.; YAMADA, M. M.; ARAÚJO, I. S.; PIRES, J. L.; PEREIRA, J. L. Mapping genes of resistance in cocoa. In: COMMON FUND FOR COMMODITIES. Project: The use of molecular biology techniques in search for varieties resistant to wotches' broom disease of cocoa. Amsterdam: CFC, 2010. Cap. 2. p. 34-52. (CFC Technical Paper, 55).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Cerrados. |
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| 7. | | NASCIMENTO, A. dos S.; ALVES, R. M.; SILVA, C. R. de S.; ALBUQUERQUE, P. S. B. de; LEMOS, L. S. L.; GRAMACHO, K. P.; CLÉMENT, D. Transferibilidade e mapeamento de microssatélites entre Theobroma cacao L. e Theobroma grandiflorum (Willd. ex. Spreng.) Schum. Agrotrópica, v. 31, n. 2, p. 85-102, 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 8. | | SILVA, R. A. da; SOUZA, G.; LEMOS, L. S. L.; LOPES, U. V.; PATROCÌNIO, N. G. R. B.; ALVES, R. M.; MARCELLINO, L. H.; CLEMENT, D.; MICHELI, F.; GRAMACHO, K. P. Genome size, cytogenetic data and transferability of EST-SSRs markers in wild and cultivated species of the genus Theobroma L. (Byttnerioideae, Malvaceae). PLoS ONE, v. 12, n. 2, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Recursos Genéticos e Biotecnologia. |
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| 9. | | LIMA, L. S.; GRAMACHO, K. P.; PIRES, J. L.; CLEMENT, D.; LOPES, U. V.; CARELS, N.; GESTEIRA, A. da S.; GAIOTTO, F. A.; CASCARDO, J. C. de MATTOS; MICHELI, F. Development, characterization, validation, and mapping of SSRs derived from Theobroma cacao L.-Moniliophthora perniciosa interaction ESTs. Tree Genetics & Genomes, Heidelberg, v. p. 663–676mar. 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 10. | | AZEVEDO, A. C. dos S.; BEDROSSIAN, C.; BÉLOT, J. - L.; BELTRÃO, N. E. de M.; BERTHAUD, A.; CARLI, M.; CLEMENT, D.; COSTA, F. C.; GONZÁLES, W. de A.; MACEDO, L. A. de; PRADES, A.; QUIRINO, W. F.; ROSCOE, R.; ROUSSET, P.; SILVA, D. A. da; SILVA, O.; SILVIE, P. Fiches descriptives des olèagineuses brèsiliennes. In: ROUSSET, P. (Coord.). Guide technique pour une utilisation énergétique des huiles végétables. Brasília, DF: CIRAD, 2008. p. 20-206| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Algodão. |
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| Registros recuperados : 10 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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