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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Cerrados. |
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Data corrente: |
08/05/1996 |
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Data da última atualização: |
22/05/2000 |
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Autoria: |
PURCINO, A. A. C. |
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Título: |
Nitrogenase, nodule enzymes and carbohydrate components of copada (Cratylia floribunda, Benth) related to soil fertility effects on regrowth vigor and nodulation with an oxisol of Brazil. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
Stillwater: Oklahoma State University, 1980. |
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Páginas: |
181p. |
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Idioma: |
Inglês |
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Notas: |
PhD. Thesis. |
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Conteúdo: |
This dissertation summarizes results from four greenhouse experiments where the effect of plant age and soil fertility on regrowth, nodulation, and nodule physiology of Cratylia floribunda, Benth was studied using a dark red latosol (Typic Eutrustox) from Brazil. Plant and nodule characteristics studied in these experiments included: plant growth, root growth, nodule size, nodule number, nodule weight, and nodule cytosol levels of glucose, sucrose, starch, soluble protein, pyridoxyl phosphates and alpha ketoglutarate. Activities of the enzymes nitrogenase (C2H2 red), glutamate dehydrogenase, glutamine synthetase, glutamate synthase, glutamate-oxaloacetate transaminase and glutamate-pyruvate transaminase were also measured. Bacteroids-free nodule extracts wereprepared using ultra sonication and high speed centrifugation procedures. Enzymatic activity was expressed either as enzymes units (U)/mg protein (specific activity) or U/g fresh nodule. Four nodule types were recognized in these plants. Apparently nodules smaller than 1 mm in diameter had little nitrogenase activity and tended to be sinks for photosyntate assimilates such as sucrose, starch, and alpha ketoglutarate, but not glucose. Increases in nodule size were followed by onset of higher activity of nitrogenase and the enzymes of NH3 assimilation. Nodule fresh weight/plant but not total number of nodule/plant correlated wellwith nitrogenase activity. Phosphorus was most limiting nutrient for increased plant growth and improved nodule physiological.......... MenosThis dissertation summarizes results from four greenhouse experiments where the effect of plant age and soil fertility on regrowth, nodulation, and nodule physiology of Cratylia floribunda, Benth was studied using a dark red latosol (Typic Eutrustox) from Brazil. Plant and nodule characteristics studied in these experiments included: plant growth, root growth, nodule size, nodule number, nodule weight, and nodule cytosol levels of glucose, sucrose, starch, soluble protein, pyridoxyl phosphates and alpha ketoglutarate. Activities of the enzymes nitrogenase (C2H2 red), glutamate dehydrogenase, glutamine synthetase, glutamate synthase, glutamate-oxaloacetate transaminase and glutamate-pyruvate transaminase were also measured. Bacteroids-free nodule extracts wereprepared using ultra sonication and high speed centrifugation procedures. Enzymatic activity was expressed either as enzymes units (U)/mg protein (specific activity) or U/g fresh nodule. Four nodule types were recognized in these plants. Apparently nodules smaller than 1 mm in diameter had little nitrogenase activity and tended to be sinks for photosyntate assimilates such as sucrose, starch, and alpha ketoglutarate, but not glucose. Increases in nodule size were followed by onset of higher activity of nitrogenase and the enzymes of NH3 assimilation. Nodule fresh weight/plant but not total number of nodule/plant correlated wellwith nitrogenase activity. Phosphorus was most limiting nutrient for increased plant growth and... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Feed legumes; Forrageira; Plants; Root nodulation. |
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Thesagro: |
Carboidrato; Cratylia Floribunda; Enzima; Feijão Branco; Fertilidade; Fertilidade do Solo; Leguminosa; Leguminosa Forrageira; Nitrogenase; Nodulação; Oxisol; Planta; Solo. |
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Thesaurus Nal: |
Brazil; carbohydrates; enzymes; Ferralsols; soil fertility. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02666nam a2200409 a 4500
001 1559899
005 2000-05-22
008 1980 bl uuuu m 00u1 u #d
100 1 $aPURCINO, A. A. C.
245 $aNitrogenase, nodule enzymes and carbohydrate components of copada (Cratylia floribunda, Benth) related to soil fertility effects on regrowth vigor and nodulation with an oxisol of Brazil.
260 $aStillwater: Oklahoma State University$c1980
300 $a181p.
500 $aPhD. Thesis.
520 $aThis dissertation summarizes results from four greenhouse experiments where the effect of plant age and soil fertility on regrowth, nodulation, and nodule physiology of Cratylia floribunda, Benth was studied using a dark red latosol (Typic Eutrustox) from Brazil. Plant and nodule characteristics studied in these experiments included: plant growth, root growth, nodule size, nodule number, nodule weight, and nodule cytosol levels of glucose, sucrose, starch, soluble protein, pyridoxyl phosphates and alpha ketoglutarate. Activities of the enzymes nitrogenase (C2H2 red), glutamate dehydrogenase, glutamine synthetase, glutamate synthase, glutamate-oxaloacetate transaminase and glutamate-pyruvate transaminase were also measured. Bacteroids-free nodule extracts wereprepared using ultra sonication and high speed centrifugation procedures. Enzymatic activity was expressed either as enzymes units (U)/mg protein (specific activity) or U/g fresh nodule. Four nodule types were recognized in these plants. Apparently nodules smaller than 1 mm in diameter had little nitrogenase activity and tended to be sinks for photosyntate assimilates such as sucrose, starch, and alpha ketoglutarate, but not glucose. Increases in nodule size were followed by onset of higher activity of nitrogenase and the enzymes of NH3 assimilation. Nodule fresh weight/plant but not total number of nodule/plant correlated wellwith nitrogenase activity. Phosphorus was most limiting nutrient for increased plant growth and improved nodule physiological..........
650 $aBrazil
650 $acarbohydrates
650 $aenzymes
650 $aFerralsols
650 $asoil fertility
650 $aCarboidrato
650 $aCratylia Floribunda
650 $aEnzima
650 $aFeijão Branco
650 $aFertilidade
650 $aFertilidade do Solo
650 $aLeguminosa
650 $aLeguminosa Forrageira
650 $aNitrogenase
650 $aNodulação
650 $aOxisol
650 $aPlanta
650 $aSolo
653 $aBrasil
653 $aFeed legumes
653 $aForrageira
653 $aPlants
653 $aRoot nodulation
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 135 | |
| 7. |  | PURCINO, A. A. C.; WAQUIL, J. M. Milho transgênico em favor do desenvolvimento. Conselho de Informações sobre Biotecnologia, 14 set. 2009. Publicado também no Correio CooperBom, Bom Despacho, p. 5, out. 2009; Revista Plantar, ano 5, n. 34, p. 46-49, 2009.| Tipo: Artigo de Divulgação na Mídia |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 16. | | WAQUIL, J. M.; PRATES, H. T.; PURCINO, A. A. C. Prospecção de fenótipos de sorgo contrastantes quanto a incidência da cigarrinha-do-milho. In: CONGRESSO NACIONAL DE MILHO E SORGO, 25.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 1., 2004, Cuiabá, MT. Da agricultura familiar ao agronegócio: tecnologia, competitividade e sustentabilidade: [resumos expandidos]. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Cuiabá: Empaer, 2004. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 19. | | MAGALHAES, J. R.; MACHADO, A. T.; PURCINO, A. A. C.; MARRIEL, I. E.; MAGALHAES, P. C. Acumulação de amônio livre, amino ácidos e atividade de enzimas de assimilação de N em genótipos de milho em função de formas de nitrogênio e CaCO3. In: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 3., 1991, Viçosa, MG. Resumos... Vicosa: SBFV, 1991. p. 49.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 135 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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