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Registros recuperados : 101 | |
41. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | FRANCA, F. S.; MACEDO, P. R. de O.; FERREIRA, M. C. Arquitetura do sistema radicular de E. saligna em diferentes condições de sítio e suas interações com as características do solo. Silvicultura, São Paulo, v. 11, n. 41, p. 65, 1986. Resumo. Edição dos anais do 5º Congresso Florestal Brasileiro, 1986, Olinda. Usos múltiplos da floresta: uma necessidade. Biblioteca(s): Embrapa Florestas. |
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42. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | GAROFALO, D. F. T.; MESSIAS, C. G.; LIESENBERG, V.; BOLFE, E. L.; FERREIRA, M. C. Análise comparativa de classificadores digitais em imagens do Landsat-8 aplicados ao mapeamento temático. Pesquisa Agropecuária Brasileira, Brasília, v. 50, n.7, p. 593-604, jul. 2015. Biblioteca(s): Embrapa Territorial. |
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45. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | CHUEIRE, L. M. O.; FERREIRA, M. C.; ANDRADE, D. de S.; HUNGRIA, M. Effects of soil tillage management and crop rotation on bradyrhizobia population. In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguacu. Nitrogen fixation: from molecules to crop productivity: proceedings. Dordrechet: Kluwer, 2000. p. 551. (Current Plant Science and Biotechnology in Agriculture, 38). Editado por Fabio O. Pedrosa, Mariangela Hungria, Geoffrey Yates, William E. Newton. Biblioteca(s): Embrapa Soja. |
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46. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | ALBINO, U.; FERREIRA, M. C.; VINUESA, P.; SARIDAKIS, D. P.; HUNGRIA, M.; ANDRADE, G. Diversity of free living diazotrofics associated with Drosera villosa var. villosa. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 21., 2001, Foz do Iguaçu-PR. Resumos... Foz do Iguaçu: Sociedade Brasileira de Microbiologia, 2001. Trab. MS-084. Biblioteca(s): Embrapa Soja. |
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47. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | LAMEIRA, O. A.; OLIVEIRA, E. C. P. de; FERREIRA, M. C.; CORDEIRO, I. M. C. C. Copaifera spp.: Copaíba. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1028-1040. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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48. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | FERREIRA, M. C.; LAMEIRA, O. A.; MEDEIROS, A. P. R.; BARBOSA, R. K. da C. Costus spiralis: Canarana. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1041-1046. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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49. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | LAMEIRA, O. A.; SANTOS, M. A. C. dos; PARACAMPO, N. E. N. P.; FERREIRA, M. C. Stryphnodendron adstringens: Barbatimão. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1088-1094. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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50. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | FERREIRA, M. C.; LAMEIRA, O. A.; OLIVEIRA, E. C. P. de; SOUZA, F. I. B. de. Uncaria guianensis e U. tomentosa: Unha-de-gato. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1095-1103. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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51. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | GOY, R. C.; FERREIRA, M. C. R. S.; BERNARDES FILHO, R. Avaliação da atividade antibacteriana de filmes finos de quitosana/nanopartículas de própolis contra staphylococcus aureus. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 8, 2014, Juiz de fora. Anais... São Carlos: Embrapa Instrumentação; Campo Grande: Embrapa Gado de Corte; Juiz de Fora: Embrapa Gado de Leite, 2014. p. 377-380. Editores: Maria Alice Martins, Humberto de Mello Brandão, Marlene de Barros Coelho, Daniel Souza Corrêa, Caue Ribeiro, Luiz Henrique Capparelli Mattoso. Biblioteca(s): Embrapa Instrumentação. |
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52. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | FERREIRA, M. C. R. S.; GOY, R. C.; BERNARDES-FILHO, R. Avaliação da atividade antibacteriana de filmes finos de quitosana/nanopartículas de próprolis contra staphylococcus aureus. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 6., 2014, São Carlos, SP Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2014. p. 73. Editores técnicos: João de Mendonça Naime, Caue Ribeiro, Maria Alice Martins, Elaine Cristina Paris, Paulino Ribeiro Villas Boas, Ladislau Marcelino Rabello. (Embrapa Instrumentação. Documentos, 57). Biblioteca(s): Embrapa Instrumentação. |
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54. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | LAMEIRA, O. A.; MEDEIROS, A. P. R.; FERREIRA, M. C.; SANTOS, M. A. C. dos. Carapa guianensis: Andiroba. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1002-1012. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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56. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | FERREIRA, M. C.; LAMEIRA, O. A.; BARBOSA, R. K. da C.; CORDEIRO, I. M. C. C. Piper callosum: Elixir-paregórico. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1078-1081. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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58. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | FERREIRA, M. C.; GUERRA, B.; GRANGE, L.; CHUEIRE, L. M. O.; MENDES, I. C.; HUNGRIA, M. Metodos moleculares para a avaliacao de estirpes de rhizobio em solos brasileiros. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 28., 2001, Londrina. Ciencia do solo: fator de produtividade e competitividade com sustentabilidade. Londrina: Sociedade Brasileira de Ciencia do Solo, 2001. p.79. Biblioteca(s): Embrapa Soja. |
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59. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | MEDEIROS, A. P. R.; LAMEIRA, O. A.; FERREIRA, M. C.; BARBOSA, R. K. da C. Myrcia multiflora: Pedra-ume-caá. In: CORADIN, L.; CAMILLO, J.; VIEIRA, I. C. G. (ed.). Espécies nativas da flora brasileira de valor econômico atual ou potencial: plantas para o futuro: região Norte. Brasília, DF: MMA, 2022. p. 1063-1067. (Série Biodiversidade, 53). Biblioteca(s): Embrapa Amazônia Oriental. |
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Registros recuperados : 101 | |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
25/04/2007 |
Data da última atualização: |
03/08/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
BATISTA, J. S. S.; HUNGRIA, M.; BARCELLOS, F. G.; FERREIRA, M. C.; MENDES, I. C. |
Afiliação: |
JESIANE STEFÂNIA SILVA BATISTA, UEL; MARIANGELA HUNGRIA DA CUNHA, CNPSO; FERNANDO GOMES BARCELLOS; MAGDA CRISTIANI FERREIRA, UEL; IÊDA CARVALHO MENDES. |
Título: |
Variability in Bradyrhizobium japonicum and B. elkanii seven years after introduction of both the exotic microsymbiont and the soybean host in a cerrados soil. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Microbial Ecology, New York, v. 53, n. 2, p. 270-284, Feb. 2007. |
ISSN: |
0095-3628 |
DOI: |
10.1007/s00248-006-9149-2 |
Idioma: |
Inglês |
Conteúdo: |
The plasticity of rhizobial genomes is far greater than previously thought, with complex genomic recombination events that may be accelerated by the often stressful environmental conditions of the tropics. This study aimed at evaluating changes in soybean rhizobia due to adaptation to inhospitable environmental conditions (high temperatures, drought, and acid soils) in the Brazilian Cerrados. Both the host plant and combinations of four strains of soybean Bradyrhizobium were introduced in an uncropped soil devoid of rhizobia capable of nodulating soybean. After the third year, seeds were not reinoculated. Two hundred and sixty-three isolates were obtained from nodules of field-grown soybean after the seventh year, and their morphological, physiological, serological, and symbiotic properties determined, followed by genetic analysis of conserved and symbiotic genes. B. japonicum strain CPAC 15 (same serogroup as USDA 123) was characterized as having high saprophytic capacity and competitiveness and by the seventh year represented up to 70% of the cultivable population, in contrast to the poor survival and competitiveness of B. japonicum strain CPAC 7 (same serogroup as CB 1809). In general, adapted strains had increased mucoidy, and up to 43% of the isolates showed no serological reaction. High variability, presumably resulting from the adaptation to the harsh environmental conditions, was verified in rep-PCR (polymerase chain reaction) profiles, being lower in strain CPAC 15, intermediate in B. elkanii, and higher in CPAC 7. Restriction fragment length polymorphism (RFLP)-PCR types of the 16S rDNA corresponded to the following: one type for B. elkanii species, two for B. japonicum, associated to CPAC 15 and CPAC 7, and unknown combinations of profiles. However, when nodC sequences and RFLP-PCR of the nifH region data were considered, only two clusters were observed having full congruence with B. japonicum and B. elkanii species. Combining the results, variability was such that even within a genetically more stable group (such as that of CPAC 15), only 6.4% of the isolates showed high similarity to the inoculant strain, whereas none was similar to CPAC 7. The genetic variability in our study seems to result from a variety and combination of events including strain dispersion, genomic recombination, and horizontal gene transfer. Furthermore, the genetic variability appears to be mainly associated with adaptation, saprophytic capacity, and competitiveness, and not with symbiotic effectiveness, as the similarity of symbiotic genes was higher than that of conserved regions of the DNA. MenosThe plasticity of rhizobial genomes is far greater than previously thought, with complex genomic recombination events that may be accelerated by the often stressful environmental conditions of the tropics. This study aimed at evaluating changes in soybean rhizobia due to adaptation to inhospitable environmental conditions (high temperatures, drought, and acid soils) in the Brazilian Cerrados. Both the host plant and combinations of four strains of soybean Bradyrhizobium were introduced in an uncropped soil devoid of rhizobia capable of nodulating soybean. After the third year, seeds were not reinoculated. Two hundred and sixty-three isolates were obtained from nodules of field-grown soybean after the seventh year, and their morphological, physiological, serological, and symbiotic properties determined, followed by genetic analysis of conserved and symbiotic genes. B. japonicum strain CPAC 15 (same serogroup as USDA 123) was characterized as having high saprophytic capacity and competitiveness and by the seventh year represented up to 70% of the cultivable population, in contrast to the poor survival and competitiveness of B. japonicum strain CPAC 7 (same serogroup as CB 1809). In general, adapted strains had increased mucoidy, and up to 43% of the isolates showed no serological reaction. High variability, presumably resulting from the adaptation to the harsh environmental conditions, was verified in rep-PCR (polymerase chain reaction) profiles, being lower in strain CPAC 15,... Mostrar Tudo |
Thesagro: |
Rhizobium; Soja. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03319naa a2200217 a 4500 001 1469973 005 2017-08-03 008 2007 bl uuuu u00u1 u #d 022 $a0095-3628 024 7 $a10.1007/s00248-006-9149-2$2DOI 100 1 $aBATISTA, J. S. S. 245 $aVariability in Bradyrhizobium japonicum and B. elkanii seven years after introduction of both the exotic microsymbiont and the soybean host in a cerrados soil. 260 $c2007 520 $aThe plasticity of rhizobial genomes is far greater than previously thought, with complex genomic recombination events that may be accelerated by the often stressful environmental conditions of the tropics. This study aimed at evaluating changes in soybean rhizobia due to adaptation to inhospitable environmental conditions (high temperatures, drought, and acid soils) in the Brazilian Cerrados. Both the host plant and combinations of four strains of soybean Bradyrhizobium were introduced in an uncropped soil devoid of rhizobia capable of nodulating soybean. After the third year, seeds were not reinoculated. Two hundred and sixty-three isolates were obtained from nodules of field-grown soybean after the seventh year, and their morphological, physiological, serological, and symbiotic properties determined, followed by genetic analysis of conserved and symbiotic genes. B. japonicum strain CPAC 15 (same serogroup as USDA 123) was characterized as having high saprophytic capacity and competitiveness and by the seventh year represented up to 70% of the cultivable population, in contrast to the poor survival and competitiveness of B. japonicum strain CPAC 7 (same serogroup as CB 1809). In general, adapted strains had increased mucoidy, and up to 43% of the isolates showed no serological reaction. High variability, presumably resulting from the adaptation to the harsh environmental conditions, was verified in rep-PCR (polymerase chain reaction) profiles, being lower in strain CPAC 15, intermediate in B. elkanii, and higher in CPAC 7. Restriction fragment length polymorphism (RFLP)-PCR types of the 16S rDNA corresponded to the following: one type for B. elkanii species, two for B. japonicum, associated to CPAC 15 and CPAC 7, and unknown combinations of profiles. However, when nodC sequences and RFLP-PCR of the nifH region data were considered, only two clusters were observed having full congruence with B. japonicum and B. elkanii species. Combining the results, variability was such that even within a genetically more stable group (such as that of CPAC 15), only 6.4% of the isolates showed high similarity to the inoculant strain, whereas none was similar to CPAC 7. The genetic variability in our study seems to result from a variety and combination of events including strain dispersion, genomic recombination, and horizontal gene transfer. Furthermore, the genetic variability appears to be mainly associated with adaptation, saprophytic capacity, and competitiveness, and not with symbiotic effectiveness, as the similarity of symbiotic genes was higher than that of conserved regions of the DNA. 650 $aRhizobium 650 $aSoja 700 1 $aHUNGRIA, M. 700 1 $aBARCELLOS, F. G. 700 1 $aFERREIRA, M. C. 700 1 $aMENDES, I. C. 773 $tMicrobial Ecology, New York$gv. 53, n. 2, p. 270-284, Feb. 2007.
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