Beijerinckia
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. A atividade da nitrogenase de Beijerinckia derxii é preservada sob condições diversas para seu crescimento
Os parâmetros utilizados para se avaliar a ação de diferentes fatores ambientais sobre Beijerinckia derxii foram curvas de crescimento e medidas de atividade específica de nitrogenase. As condições estudadas foram: a) meios com os valores de pH 2,5, 2,8, 4,2 e 5,7; b) meio suplementado com 230 mM de sulfato de alumínio; c) meio com as concentrações
Brazilian Journal of Microbiology. Publicado em: 2002-09
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14. Beijerinckia derxii estimula a viabilidade de bactérias não fixadoras de N2 em meio sem nitrogênio
Co-culturas com a bactéria fixadora de nitrogênio Beijerinckia derxii e duas bactérias não diazotróficas (Escherichia coli e uma bactéria quimiolitotrófica facultativa oxidante de enxofre) foram empregadas para o estudo de interações bacterianas. B. derxii foi colocada em contato direto e indireto com E. coli. Um aumento no número de UFC e a manute
Brazilian Journal of Microbiology. Publicado em: 2000-09
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15. Contribuição ao estudo dos parametros de fermentação por Beijerinckia sp
O resumo poderá ser visualizado no texto completo da tese digital
Publicado em: 1996
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16. Contribuição ao estudo da estrutura quimica do exopolissacarideo PS-32 obtido a partir de fermentação aerobica da bacteria Beijerinckia sp
O resumo poderá ser visualizado no texto completo da tese digital
Publicado em: 1996
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17. Produção e caracterização do biopolimero produzido por Beijerinckia sp isolada do solo cultivado com cana-de-açucar da região de Ribeiro Preto-São Paulo-Brasil
Two microorganisms were isolated and selecionated from a sugar cane plantation from the North-East region of the São Paulo. They were identified as Beijerinckia sp, strains 7070 and 9102AA . Sucrose solutions at concentrations from 0.1 to 5.0% in Yeast Malt medium were used to determine cellular growth of the 7070 strain. The 1 % sucrose medium showed the b
Publicado em: 1995
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18. Bacterial oxidation of the polycyclic aromatic hydrocarbons acenaphthene and acenaphthylene.
A Beijerinckia sp. and a mutant strain, Beijerinckia sp. strain B8/36, were shown to cooxidize the polycyclic aromatic hydrocarbons acenaphthene and acenaphthylene. Both organisms oxidized acenaphthene to the same spectrum of metabolites, which included 1-acenaphthenol, 1-acenaphthenone, 1,2-acenaphthenediol, acenaphthenequinone, and a compound that was tent
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19. Metabolism of Dibenzo-p-Dioxin and Chlorinated Dibenzo-p- Dioxins by a Beijerinckia Species
Whole cells of the parent strain of Beijerinckia, grown with succinate and biphenyl, oxidized dibenzo-p-dioxin and several chlorinated dioxins. The rate of oxidation of the chlorinated dibenzo-p-dioxins decreased with an increasing degree of chlorine substitution. A mutant strain (B8/36) of Beijerinckia oxidized dibenzo-p-dioxin to cis-1,2-dihydroxy-1,2-dihy
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20. Identification of Beijerinckia in the High Arctic (Devon Island, Northwest Territories)
Although generally considered, with few exceptions, to be restricted to the acidic, tropical soils of the southern hemisphere, Beijerinckia species, resembling B. indica, were found at three sites on Devon Island (75°33′N, 84°40′W) in the Canadian Arctic.
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21. Comparative Cytochrome Oxidase and Superoxide Dismutase Analyses on Strains of Azotobacter vinelandii and Other Related Free-Living Nitrogen-Fixing Bacteria
Quantitative N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) oxidase and superoxide dismutase (SOD) analyses were performed on representative organisms of the family Azotobacteraceae. Azotobacter vinelandii, Azotobacter chroococcum, Azotobacter paspali, and Derxia gummosa exhibited high quantitative TMPD oxidase activities, and their extracts possessed v
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22. Metabolism of dibenzothiophene by a Beijerinckia species.
Beijerinckia B8/36 when grown with succinate in the presence of dibenzothiophene, accumulated (+)-cis-1,2-dihydroxy-1,2-dihydrodibenzothiophene and dibenzothiophene-5-oxide in the culture medium. Each metabolite was isolated in crystalline form and characterized by a variety of chemical techniques, cis-Naphthalene dihydrodiol dehydrogenase, isolated from Pse
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23. Identification of Beijerinckia from Pacific Northwest soils.
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24. Molecular and biochemical characterization of two meta-cleavage dioxygenases involved in biphenyl and m-xylene degradation by Beijerinckia sp. strain B1.
Beijerinckia sp. strain B1 is able to grow on either biphenyl or m-xylene as the sole source of carbon and is capable of cooxidizing many polycyclic aromatic hydrocarbons. The catabolic pathways for biphenyl and m-xylene degradation are coinduced and share common downstream enzymatic reactions. The catabolic pathway for biphenyl degradation involves two meta