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| Registros recuperados: 83 | |
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| Araújo,L.M.; Huergo,L.F.; Invitti,A.L.; Gimenes,C.I.; Bonatto,A.C.; Monteiro,R.A.; Souza,E.M.; Pedrosa,F.O.; Chubatsu,L.S.. |
| Azospirillum brasilense is a diazotroph found in association with important agricultural crops. In this organism, the regulation of nitrogen fixation by ammonium ions involves several proteins including the uridylyltransferase/uridylyl-removing enzyme, GlnD, which reversibly uridylylates the two PII proteins, GlnB and GlnZ, in response to the concentration of ammonium ions. In the present study, the uridylylation/deuridylylation cycle of A. brasilense GlnB and GlnZ proteins by GlnD was reconstituted in vitro using the purified proteins. The uridylylation assay was analyzed using non-denaturing polyacrylamide gel electrophoresis and fluorescent protein detection. Our results show that the purified A. brasilense GlnB and GlnZ proteins were uridylylated by... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Azospirillum brasilense; Nitrogen fixation; PII-like protein; GlnD; GlnB; GlnZ. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000400006 |
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| CARVALHO, G. A. B. de; BATISTA, J. S. S.; MARCELINO, F. C.; HUNGRIA, M.. |
| ABSTRACT: Soybean [Glycine max (L.) Merr.] is the most important legume cropped worldwide, with an economic value attributed mainly to the high protein content of the grain, which, in turn, demands a heavy supply of nitrogen. An environmentally friendly source of nitrogen at low cost to farmers is represented by the biological fixation of atmospheric nitrogen that takes place is association with symbiotic bacteria. For the soybean, the association occurs mainly with bacteria belonging to the species Bradyrhizobium japonicum and Bradyrhizobium elkanii, but our knowledge about gene expression associated with the symbiosis is still poor. This work - part of an effort by the Soybean Genome Consortium (Genosoja)?was conducted with the aim of achieving better... |
| Tipo: Artigo de divulgação na mídia (INFOTECA-E) |
Palavras-chave: Soja; Inoculação; Fixação de nitrogênio; Soybeans; Nitrogen fixation; Root inoculation. |
| Ano: 2012 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/945205 |
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| Chauhan,Anjali; Guleria,Shiwani; Balgir,Praveen P.; Walia,Abhishek; Mahajan,Rishi; Mehta,Preeti; Shirkot,Chand Karan. |
| Abstract Aneurinibacillus aneurinilyticus strain CKMV1 was isolated from rhizosphere of Valeriana jatamansi and possessed multiple plant growth promoting traits like production of phosphate solubilization (260 mg/L), nitrogen fixation (202.91 nmol ethylene mL-1 h-1), indole-3-acetic acid (IAA) (8.1 µg/mL), siderophores (61.60%), HCN (hydrogen cyanide) production and antifungal activity. We investigated the ability of isolate CKMV1 to solubilize insoluble P via mechanism of organic acid production. High-performance liquid chromatography (HPLC) study showed that isolate CKMV1 produced mainly gluconic (1.34%) and oxalic acids. However, genetic evidences for nitrogen fixation and phosphate solubilization by organic acid production have been reported first time... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Valeriana jatamansi; Phosphate solubilization; Nitrogen fixation; Glucose dehydrogenase; Aneurinibacillus aneurinilyticus; PGPR. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200294 |
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| Dalla Santa,Osmar R.; Hernández,Ramona Fernández; Alvarez,Gergina L. Michelena; Ronzelli Junior,Pedro; Soccol,Carlos Ricardo. |
| The aim of the present work was to evaluate the inoculation effects of Azospirillum sp. RAM-7 strain, in seeds of wheat, barley and oats cultures on yield and total nitrogen content of the grains in greenhouse experiments. Seeds inoculation with Azospirillum sp. RAM-7 strain enhanced grain yields, even so, the responses vary among the evaluated cultures. For wheat, significant increases were obtained when the inoculation was associated to 100% of the recommended nitrogen, although the treatment that received only inoculation produced 7.4% above the control, however this difference wasn't significant. For barley, the presence of the inoculant substituted 20% the recommended nitrogen fertilization. For oats the inoculation with Azospirillum sp. RAM-7 didn't... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Azospirillum; Wheat; Barley; Oats; Nitrogen fixation; Plant growth promotion. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600002 |
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| Embrapa Gado de Corte (Campo Grande, MS). |
| Equipe multidisciplinar: Ademir Hugo Zimmer, CNPGC; Armindo Neivo Kichel, CNPGC; Bela Grof; Carlos Maurício Soares de Andrade; Celso Dornelas Fernandes, CNPGC; Francisco Assis Rolim Pereira; Haroldo Pires Queiroz, CNPGC; Hortência Maria Abranches Purcino; Jaqueline Rosemeire Verzignassi, CNPGC; José Alexandre Agiova da Costa, CNPGC; José Marcelino Sobrinho (in memorian); José Marques da Silva, CNPGC; José Raul Valério, CNPGC; Leônidas da Costa Schalcher Valle; Manuel Cláudio Motta Macedo, CNPGC; Maria José D´Ávila Charchar; Maria do Socorro Bona Nascimento; Marta Pereira da Silva; Rosângela Maria Simeão Resende; Roza Maria Shunke. Histórico e descrição da cultivar. Principais atributos do estilosantes-campo-grande. Fixação biológica de nitrogênio e valor... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Estilosantes; Desempenho animal; Consorciação; Campo Grande; Mato Grosso do Sul; Brasil; Management; Feed crops; Sustainability; Mixed pastures; Pests of plants; Plant diseases.; Desenvolvimento Sustentável; Doença de Planta; Erva Daninha; Fixação de Nitrogênio; Historia; Leguminosae; Leguminosa Forrageira; Manejo; Pastejo; Pastagem; Nutrição Animal; Planta Forrageira; Praga de Planta; Produção Animal; Sistema de Cultivo; Valor Nutritivo.; Animal performance; Animal nutrition; Stylosanthes; Animal production; Brazil; Cropping systems; Grazing; History; Nutritive value; Pastures; Nitrogen fixation; Weeds.. |
| Ano: 2007 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/319150 |
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| Fonseca-batista, Debany; Dehairs, Frank; Riou, Virginie; Fripiat, Francois; Elskens, Marc; Deman, Florian; Brion, Natacha; Queroue, Fabien; Bode, Maya; Auel, Holger. |
| Euphotic layer dinitrogen (N-2) fixation and primary production (PP) were measured in the eastern Atlantic Ocean (38 degrees N-21 degrees S) using N-15(2) and C-13 bicarbonate tracer incubations. This region is influenced by Saharan dust deposition and waters with low nitrogen to phosphorus (N/P) ratios originating from the Subantarctic and the Benguela upwelling system. Depth-integrated rates of N-2 fixation in the north (0 degrees N-38 degrees N) ranged from 59 to 370 mu mol N m(-2) d(-1), with the maximal value at 19 degrees N under the influence of the northwest African upwelling. Diazotrophic activity in the south (0 degrees S-21 degrees S), though slightly lower, was surprisingly close to observations in the north, with values ranging from 47 to 119... |
| Tipo: Text |
Palavras-chave: Nitrogen fixation; Atlantic Ocean; Primary production. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00379/49009/49451.pdf |
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| Freire, Juliana Müller; Jesus, Ederson da Conceição; Rouws, Janaína Ribeiro Costa; de Faria, Sérgio Miana; Zilli, Jerri Edson. |
| O objetivo deste trabalho é avaliar a resposta de mudas de Mimosa bimucronata (DC) O. Kuntze à inoculação com estirpes de rizóbio previamente selecionados, utilizar diferentes substratos em condições de viveiro. Utilizou-se o delineamento experimental em blocos ao acaso com parcelas subdivididas, testando-se três substratos (organomineral puro contendo barro, areia e esterco na proporção 1: 1: 1 v: v: v, organomineral misturado com 30% de palha e areia com vermiculita na proporção 1: 1 v: v) e quatro fontes de N (inoculação com as estirpes BR 3461 e BR 3470, tratamento controle com nitrogênio e controle sem adubação), totalizando 12 tratamentos. Foramavaliados altura e diâmetro do colo após 90 dias e massas da parte aérea, das raízes e dos nódulos secos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências agrárias engenharia florestal silvicultura Rizobactéria; Fixação de nitrogênio; Leguminosas arbóreas Rhizobacteria; Nitrogen fixation; Leguminous treess. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1132 |
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| Garcia,Nayara F. S.; Arf,Orivaldo; Portugal,José R.; Peres,Amanda R.; Rodrigues,Mayara; Penteado,Mariele de S.. |
| ABSTRACT The study was carried out in Selvíria-MS, in the 2011/12 and 2012/13 agricultural years, aiming to evaluate the efficiency of Azospirillum brasilense in nitrogen fixation in upland rice, as a function of doses and application methods of the inoculant containing this diazotrophic bacterium. The experimental design was randomized blocks, arranged in a 4 x 4 factorial scheme, with 4 doses of inoculant (control without inoculation, 100, 200 and 300 mL of the commercial product ha-1) and 4 application methods (seed inoculation, application in the sowing furrow, soil spraying after sowing, and foliar spraying at the beginning of plant tillering), with 4 replicates. During the experiment, the agronomic characteristics, production components and yield of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; Diazotrophic; Cv. IAC 202; Nitrogen fixation; Grain yield. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001100990 |
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| GONNET,SUSANA; DÍAZ,PEDRO. |
| Lotus corniculatus, L. tenuis, L. pedunculatus, and L. subbiflorus inoculated with Mesorhizobium loti NZP2037 strain were grown in a growth chamber. The plants dry weight (DW), the nodule fresh weight (FW), the nitrogenase activity, the nodule glutamine synthetase (GS) and glutamate synthase (GOGAT) activities, as well as the leghemoglobin content and the amino acid in the stem were measured 28 days after inoculation. The highest DW of plants was measured in L. tenuis and the highest FW of nodules was measured in L. pedunculatus. Nitrogenase activity in L. tenuis, L. pedunculatus and L. subbiflorus was six fold the activity in L. corniculatus. Nodule GS and GOGAT activities did not follow this same pattern. L. tenuis had the highest values of GS and GOGAT... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen fixation; Nitrogenase; Mesorhizobium loti; Leghemoglobin; Ammonia assimilation. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312000000300003 |
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| Registros recuperados: 83 | |
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