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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/02/1999 |
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Data da última atualização: |
09/07/2019 |
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Autoria: |
MARTINS, L. M. V.; NEVES, M. C. P.; RUMJANEK, N. G. |
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Título: |
Growth characteristics and symbiotic efficienty of rhizobia isolated from cowpea nodules of the North-east region of Brazil. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Soil Biology and Biochemistry, v. 29, n. 5/6, p. 1005-1010, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
In Brazil, the geo-environmental conditions of the North-east region exert an effect on the rhizobia diversity. A large collection of rhizobia isolates were obtained from nodules of cowpea planted in different soils from this region of Brazil. Cowpea was selected as the scavenger for this study of rhizobia diversity because it is a known broad host-hange leguminous plant and it is also widespread in the region. A total of 536 nodule isolates were obtained and later arranged in 78 different groups based on colony morphology and growth. Growth in culture media of isolate representatives of these groups revealed that 27 of them showed fast growth characteristics although the plant is characteristically nodulated by strains described as Bradyrhizobium spp. the analysis spp. Furthermore, the analysis of the isolates from each region showed an increased proportion of fast-growing rhizobia when going from the coast to be semi-arid region. Fifty-five of the rhizobia representatives from the Brazilian north-east region induced Hup+ phenotype in cowpea nodules indicating the predominance of this phenotype. They were also inoculated into soybean, since this legume plant is nodulated by the slow-growing rhizobia species B. japonicum and B. elkanii. Twenty-five of the group representatives were not capable of nodulating soybean. Inoculation with some of them promoted the formation of pseudo-nodule structures which despite not contributing significantly to the nitrogen content of the plant are an indication that signal exchange between plant rhizobia is occurring. The remaining isolate representatives were capable of nodulating soybean. The nodulation of soybean by the isolates obtained in soils of the semi-arid region of Brazil is quite remarkable since this crop has never been cultivated in the region before. Data on host-regulated uptake hydrogenase phenotype (Hup-hr) is discussed. MenosIn Brazil, the geo-environmental conditions of the North-east region exert an effect on the rhizobia diversity. A large collection of rhizobia isolates were obtained from nodules of cowpea planted in different soils from this region of Brazil. Cowpea was selected as the scavenger for this study of rhizobia diversity because it is a known broad host-hange leguminous plant and it is also widespread in the region. A total of 536 nodule isolates were obtained and later arranged in 78 different groups based on colony morphology and growth. Growth in culture media of isolate representatives of these groups revealed that 27 of them showed fast growth characteristics although the plant is characteristically nodulated by strains described as Bradyrhizobium spp. the analysis spp. Furthermore, the analysis of the isolates from each region showed an increased proportion of fast-growing rhizobia when going from the coast to be semi-arid region. Fifty-five of the rhizobia representatives from the Brazilian north-east region induced Hup+ phenotype in cowpea nodules indicating the predominance of this phenotype. They were also inoculated into soybean, since this legume plant is nodulated by the slow-growing rhizobia species B. japonicum and B. elkanii. Twenty-five of the group representatives were not capable of nodulating soybean. Inoculation with some of them promoted the formation of pseudo-nodule structures which despite not contributing significantly to the nitrogen content of the plan... Mostrar Tudo |
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Palavras-Chave: |
Caupi; Cowpea; Eficiencia simbiotica; Growth; Nordeste; Rhizobia; Symbiotic eficiency; Vigga unguiculata. |
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Thesagro: |
Crescimento; Nodulação; Rhizobium. |
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Thesaurus Nal: |
Brazil; nodulation. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02765naa a2200301 a 4500
001 1130526
005 2019-07-09
008 1997 bl --- 0-- u #d
100 1 $aMARTINS, L. M. V.
245 $aGrowth characteristics and symbiotic efficienty of rhizobia isolated from cowpea nodules of the North-east region of Brazil.$h[electronic resource]
260 $c1997
520 $aIn Brazil, the geo-environmental conditions of the North-east region exert an effect on the rhizobia diversity. A large collection of rhizobia isolates were obtained from nodules of cowpea planted in different soils from this region of Brazil. Cowpea was selected as the scavenger for this study of rhizobia diversity because it is a known broad host-hange leguminous plant and it is also widespread in the region. A total of 536 nodule isolates were obtained and later arranged in 78 different groups based on colony morphology and growth. Growth in culture media of isolate representatives of these groups revealed that 27 of them showed fast growth characteristics although the plant is characteristically nodulated by strains described as Bradyrhizobium spp. the analysis spp. Furthermore, the analysis of the isolates from each region showed an increased proportion of fast-growing rhizobia when going from the coast to be semi-arid region. Fifty-five of the rhizobia representatives from the Brazilian north-east region induced Hup+ phenotype in cowpea nodules indicating the predominance of this phenotype. They were also inoculated into soybean, since this legume plant is nodulated by the slow-growing rhizobia species B. japonicum and B. elkanii. Twenty-five of the group representatives were not capable of nodulating soybean. Inoculation with some of them promoted the formation of pseudo-nodule structures which despite not contributing significantly to the nitrogen content of the plant are an indication that signal exchange between plant rhizobia is occurring. The remaining isolate representatives were capable of nodulating soybean. The nodulation of soybean by the isolates obtained in soils of the semi-arid region of Brazil is quite remarkable since this crop has never been cultivated in the region before. Data on host-regulated uptake hydrogenase phenotype (Hup-hr) is discussed.
650 $aBrazil
650 $anodulation
650 $aCrescimento
650 $aNodulação
650 $aRhizobium
653 $aCaupi
653 $aCowpea
653 $aEficiencia simbiotica
653 $aGrowth
653 $aNordeste
653 $aRhizobia
653 $aSymbiotic eficiency
653 $aVigga unguiculata
700 1 $aNEVES, M. C. P.
700 1 $aRUMJANEK, N. G.
773 $tSoil Biology and Biochemistry$gv. 29, n. 5/6, p. 1005-1010, 1997.
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Embrapa Semiárido (CPATSA) |
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| Registros recuperados : 109 | |
| 5. |  | LEITE, J.; MARTINS, L. M. V.; RUMJANEK, N. G.; XAVIER, G. R. Caracterização de bactérias isoladas de nódulos de feijão caupi em solos do semi-árido, Brasil. In: SEMANA CIENTÍFICA JOHANNA DOBEREINER, 9., 19 a 23 de outubro de 2009, Seropédica. Ciência no Brasil: desafios, avanços e aplicações. Seropédica: Embrapa Agrobiologia, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 6. | | MORGADO, L. B.; MARTINS, L. M. V.; XAVIER, G. R.; RUMJANEK, N. G. Avaliação do potencial de estirpes de rizóbio em fixar nitrogênio associadas ao feijão-caupi em Petrolina-PE. In: CONGRESSO NACIONAL DE FEIJÃO- CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO- CAUPI, 6., 2006, Teresina, PI. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006. 1 CD-ROM (Embrapa Meio-Norte. Documentos, 121).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 8. | | XAVIER, G. R.; MARTINS, L. M. V; RUMJANEK, N. G.; FREIRE FILHO, F. R. Variabilidade genética em acessos de caupi analisada por meio de marcadores RAPD. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 4, p. 353-359, abr. 2005. Cowpea genetic variability analyzed by RAPD markers.| Biblioteca(s): Embrapa Agrobiologia. |
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| 14. | | LEITE, J.; XAVIER, G. R.; RUMJANEK, N. G.; MARTINS, L. M. V. Potencial biotecnológico de bactérias isoladas de nódulos de feijão-caupi para solubilizar fosfato de cálcio. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. Viçosa: SBCS, 2010. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 17. | | LEITE, J.; XAVIER, G. R.; RUMJANEK, N. G.; MARTINS, L. M. V. Perfil de utilização de fontes de carbono e atividade enzimática de isolados bacterianos de nódulos de feijão-caupi. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. Viçosa: SBCS, 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 20. | | MARTINS, L. M. V.; RUMJANEK, N. G.; MORGADO, L. B.; XAVIER, G. R.; NEVES, M. C. P. Avaliacao do estabelecimento e sobrevivencia de estirpes de rizobio introduzidas em area de sequeiro do semi-arido brasileiro - 1o. ano. In: REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 23.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 7.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 5.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO., 2, 1998, Caxambu, MG. Resumos... Lavras: UFLA/SBCS/SBM, 1998. p. 775.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 109 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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