Consulta: subjectFacets:"Nodulation"
Registros recuperados: 60
Data/hora: 17/06/2024 01:45:47

Liming influence on soil chemical properties, nutritional status and yield of alfalfa grown in acid soil
Provedor de dados: 90
Autores: Moreira,Adônis; Fageria,Nand Kumar.
Alfalfa is an important forage crop with high nutritive value, although highly susceptible to soil acidity. Liming is one of the most efficient and prevailing practices to correct soil acidity and improve alfalfa yield. The objective of this study was to evaluate response to liming of alfalfa grown in a greenhouse on a Typic Quartzipsamment soil. The treatments consisted of four lime rates (0, 3.8, 6.6 and 10.3 Mg ha-1) and two cuts. Alfalfa dry matter increased quadratically with increasing lime rates. In general, dry matter yield was maximized by a lime rate of 8.0 Mg ha-1. Except for the control, the dry matter nutrient contents in the treatments were adequate. The positive linear correlation between root and nodule dry matter with lime rates indicated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicago sativa L.; Shoot dry matter; Nodulation; Soil acidity; Nutrient uptake.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400022

Seeds enriched with phosphorus and molybdenum improve the contribution of biological nitrogen fixation to common bean as estimated by 15n isotope dilution
Provedor de dados: 90
Autores: Chagas,Eduardo; Araújo,Adelson Paulo; Alves,Bruno José Rodrigues; Teixeira,Marcelo Grandi.
Seeds with a high concentration of P or Mo can improve the growth and N accumulation of the common bean (Phaseolus vulgaris L.), but the effect of enriched seeds on biological N2 fixation has not been established yet. This study aimed to evaluate the effect of seeds enriched with P and Mo on growth and biological N2 fixation of the common bean by the 15N isotope dilution technique. An experiment was carried out in pots in a 2 x 3 x 2 x 2 factorial design in randomized blocks with four replications, comprising two levels of soil applied P (0 and 80 mg kg-1), three N sources (without N, inoculated with rhizobia, and mineral N), two seed P concentrations (low and high), and two seed Mo concentrations (low and high). Non-nodulating bean and sorghum were used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molybdenum; Nodulation; Phaseolus vulgaris.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400009

Rhizobial Inoculation and Molybdenum Fertilization in Peanut Crops Grown in a No Tillage System After 20 Years of Pasture
Provedor de dados: 90
Autores: Crusciol,Carlos Alexandre Costa; Ferrari Neto,Jayme; Mui,Tsai Siu; Franzluebbers,Alan Joseph; Costa,Cláudio Hideo Martins da; Castro,Gustavo Spadotti Amaral; Ribeiro,Lívia Cristina; Costa,Nídia Raquel.
ABSTRACT: Peanut (Arachis hypogea) is an important legume grain consumed by humans and utilized for effective nutrient cycling in a diverse cropping system. Areas that have been cultivated with perennial pasture for decades may have nutritional deficiencies and lack a sufficient population of atmospheric nitrogen-fixing bacteria. Molybdenum is an essential micronutrient that is part of the enzyme nitrogenase contained within symbiotic Bradyrhizobium bacteria, which are responsible for fixing nitrogen in legumes. Our objective was to evaluate the effects of application of Mo at different rates and a rhizobial inoculant on peanut growth characteristics. The experiment was conducted in the 2009/2010 growing season in a no-tillage cropping system following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis hypogaea; Urochloa brizantha; Symbiotic fixation; Nodulation; Nitrogenase activity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100500

Effect of fertilizer-N application and seed coating with rhizobial inoculants on soybean yield in eastern Paraguay
Provedor de dados: 90
Autores: Kubota,Aki; Hoshiba,Kent; Bordon,Jorge.
Nitrogen removal in soybean grains at harvest may exceed biological N2 fixation, particularly if grain yields are as high as typically achieved on "Terra Rossa" soils of Eastern Paraguay. Applying N fertilizer or coating seeds with rhizobial inoculants that enhance nodulation may represent a way of balancing the N budget. However, the effects of such treatments appear to be highly site-specific. The objective of this study was to examine the effects of N application (N) and rhizobial inoculation (I) on nodulation, N accumulation and soybean yields in Eastern Paraguay. Field experiments were conducted in two consecutive soybean seasons. Dry conditions in the first year delayed sowing and reduced plant number m-2 and pod number plant-1. Grain yields were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Inoculum; Nitrogen; Nodulation; Rhizobium.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832008000400027

Seeds with high molybdenum concentration improved growth and nitrogen acquisition of rhizobium-inoculated and nitrogen-fertilized common bean plants
Provedor de dados: 90
Autores: Almeida,Fernanda Fátima Delgado; Araújo,Adelson Paulo; Alves,Bruno José Rodrigues.
Seeds of common bean (Phaseolus vulgaris) with high molybdenum (Mo) concentration can supply Mo plant demands, but to date no studies have concomitantly evaluated the effects of Mo-enriched seeds on plants inoculated with rhizobia or treated with N fertilizer. This work evaluated the effects of seed Mo on growth and N acquisition of bean plants fertilized either by symbiotic N or mineral N, by measuring the activities of nitrogenase and nitrate reductase and the contribution of biological N2 fixation at different growth stages. Seeds enriched or not with Mo were sown with two N sources (inoculated with rhizobia or fertilized with N), in pots with 10 kg of soil. In experiment 1, an additional treatment consisted of Mo-enriched seeds with Mo applied to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Nodulation; Biological N2 fixation; 15N isotope dilution; Ontogeny.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000200008

Land use and vegetation cover on native symbionts and interactions with cowpea
Provedor de dados: 91
Autores: Rocha,Beatriz C. F.; Santos,Enésia O. da S.; Santos,José G. D.; Takako,Adriana K.; Castro,Fabio J.
ABSTRACT Arbuscular mycorrhizal fungi and rhizobia are important components of agroecosystems and they respond to human interference. The objective of this study was to investigate native communities of those microorganisms in soil collected under the native forest, four pastures (Brachiaria brizantha, Panicum maximum, Arachis pintoi and Stylosanthes guianensis) and a fallow soil after maize cultivation, in interaction with cowpea (Vigna unguculata). The cowpea grew in a greenhouse until flowering. They were randomly distributed depending on soil, in five replications. The lowest mycorrhizal fungi sporulation and mycorrhizal root colonization occurred under the Panicum and forest soil. In the soils under forest and Stylosanthes, the cowpea did not exhibit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhiza; Rhizobia; Legal Amazon; Nodulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200116

Water restriction and physiological traits in soybean genotypes contrasting for nitrogen fixation drought tolerance
Provedor de dados: 63
Autores: Cerezini,Paula; Fagotti,Dáfila dos Santos Lima; Pípolo,Antonio Eduardo; Hungria,Mariangela; Nogueira,Marco Antonio.
ABSTRACT Biological nitrogen fixation (BNF) is essential to the economic viability of the soybean [Glycine max (L.) Merrill] crop in Brazil, but drought may impair the BNF processes. We evaluated physiological traits of nitrogen fixation drought-tolerant (NFDT) (R01-581F, R01-416F and R02-1325) and drought-susceptible (CD 215 and BRS 317) genotypes of soybean subjected to drought or regular water supply between 45 and 55 days after emergence, in an experiment under greenhouse conditions in pots containing non-sterile soil. R01-581F had more stable photosynthetic and transpiration rates, and higher intercellular CO2 levels under drought. Drought reduced the chlorophyll concentration in all genotypes, but with less intensity in R01-581F and R02-1325. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Abiotic stress; Nodulation; Total soluble sugars; Ureides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000200110

Sesbania virgata stimulates the occurrence of its microsymbiont in soils but does not inhibit microsymbionts of other species
Provedor de dados: 63
Autores: Florentino,Ligiane Aparecida; Guimarães,Ana Paula; Rufini,Márcia; Silva,Krisle da; Moreira,Fátima Maria de Souza.
The legume species Sesbania virgata establishes a specific and efficient symbiosis with Azorhizobium doebereinerae. Previous studies have shown that A. doebereinerae occurrence correlates to the presence of S. virgata. This work aimed to evaluate the occurrence of A. doebereinerae and of other nitrogen-fixing Leguminosae-nodulating bacteria (NFLNB) in soil samples collected adjacent to and 10 m away from the stems of five S. virgata plants in pasture areas. Symbiotic characteristics of isolates from these NFLNB populations were also studied. S. virgata and the four promiscuous legume species Leucaena leucocephala, Macroptilium atropurpureum, Phaseolus vulgaris and Vigna unguiculata were inoculated with soil samples to trap A. doebereinerae and other NFLNB....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azorhizobium; Cupriavidus; Leguminosae; Nodulation; Nitrogen-fixing species.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500012

Caracterização de rizóbios (Bradyrhizobium japonicum) e produtividade da soja
Provedor de dados: 63
Autores: LIMA,S.C.; LOPES,E.S.; LEMOS,E.G.M.
Fez-se um estudo de campo sobre a competição e a dinâmica de ocupação de sítios de nodulação de estirpes de Bradyrhizobium japonicum naturalizadas ou inoculadas em sementes. O ensaio foi instalado em Latossolo Vermelho Escuro utilizando blocos ao acaso, com 8 repetições dos seguintes tratamentos: A) controle sem inoculante; B) controle sem inoculante, com adubação nitrogenada; C) inoculante com cerca de 107 rizóbios/g (8g/kg de semente); D) inoculação com cerca de 1010 rizóbios/g (8g/kg de semente). Os inoculantes foram preparados com as estirpes recomendadas na ocasião, SMS - 314 (= SEMIA 587) e SMS - 463 (= SEMIA 5019 = 29W). A identificação das estirpes formadoras dos nódulos foi realizada em amostras coletadas aos 10, 42 e 70 dias após a germinação....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soja; Nodulação; Bactéria; Nodulation.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000300003

Análise e Classificação Automática de Nódulos em Raízes de Cultivares de Soja.
Provedor de dados: 119
Autores: PACANHELA, E. F.; RONDINA, A. B. L.; NOGUEIRA, M. A.; HUNGRIA, M.; SAITO, P. T. M.; LOPES, F. M.
Tipo: Parte de livro
Palavras-chave: Computação; Soja; Nodulação; Fixação de Nitrogênio; Computador; Soybeans; Nodulation; Nitrogen fixation; Computer vision.
Ano: 2022
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150741

Production and disease resistance of elite black bean lines previously selected using mineral nitrogen fertilization cultivated with natural versus artificial nitrogen supplementation.
Provedor de dados: 119
Autores: DIAS, P. A. S.; MELO, P. G. S.; MELO, L. C.; SOUZA, T. L. P. O.; FARIA, L. C. de; FERREIRA, E. P. B.; PEREIRA, H. S.
Nitrogen (N) is the most important soil nutrient for common beans; the main sources are mineral N fertilizers and symbiotic N fixation (SNF). The common bean (Phaseolus vulgaris) is a N fixing species, but breeding programs have neglected this fact. We investigates black seeded elite lines grown with mineral N fertilization or using inoculation with rhizobia to select lines with broad adaptability, high yield stability, and high agronomic performance. Fifteen black seeded common bean elite lines and cultivars, all of them selected under mineral N fertilization, were evaluated in major bean crop regions in the Brazilian states of Goiás, Paraná and Distrito Federal in different growing seasons and years, totaling 13 environments (combination of...
Tipo: Artigo de periódico
Palavras-chave: Symbiotic N fixation; Feijão; Phaseolus Vulgaris; Nodulação; Rhizobium; Fixação de Nitrogênio; Melhoramento Genético Vegetal; Beans; Plant breeding; Nitrogen fixation; Nodulation.
Ano: 2020
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1122030

So many rhizobial partners, so little nitrogen fixed: The intriguing symbiotic promiscuity of common bean (Phaseolus vulgaris L.).
Provedor de dados: 119
Autores: MOURA, F. T.; RIBEIRO, R. A.; HELENE, L. C. F.; NOGUEIRA, M. A.; HUNGRIA, M.
Tipo: Artigo de periódico
Palavras-chave: Fixação de Nitrogênio; Nodulação; Feijão; Beans; Nitrogen fixation; Nodulation.
Ano: 2022
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150683

Rhizobial characterization in revegetated areas after bauxite mining.
Provedor de dados: 119
Autores: BORGES, W. L.; PRIN, Y.; DUCOUSSO, M.; LE ROUX, C.; FARIA, S. M. de.
Little is known regarding how the increased diversity of nitrogen-fixing bacteria contributesto the productivity and diversity of plants in complex communities. However, some authorshave shown that the presence of a diverse group of nodulating bacteria is required for dif-ferent plant species to coexist. A better understanding of the plant symbiotic organismdiversity role in natural ecosystems can be extremely useful to define recovery strategies ofenvironments that were degraded by human activities. This study used ARDRA, BOX-PCRfingerprinting and sequencing of the 16S rDNA gene to assess the diversity of root nodulenitrogen-fixing bacteria in former bauxite mining areas that were replanted in 1981, 1985,1993, 1998, 2004 and 2006 and in a native forest....
Tipo: Artigo de periódico
Palavras-chave: Symbiotic nitrogen fixation.; Fixação simbiótica de nitrogênio; Nodulação; Simbiose; Nodulation; Symbiosis.
Ano: 2016
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1043239

Compatibilidade do tratamento de sementes de feijão-caupi com fungicidas e inoculação com estirpes de Bradyrhizobium.
Provedor de dados: 119
Autores: SILVA NETO, M. L. da; SMIDERLE, O. J.; SILVA, K. da; FERNANDES JUNIOR, P. I.; XAVIER, G. R.; ZILLI, J. E.
O objetivo deste trabalho foi avaliar a compatibilidade do tratamento de sementes com fungicidas e a inoculação com estirpes de Bradyrhizobium em feijão-caupi. Em laboratório, avaliou-se a sobrevivência de células nas sementes da cultivar BRS Guariba, tratadas ou não com fungicidas (fludioxonil, carbendazim, carbendazim + thiram e carboxin + thiram) e inoculadas ou não com Bradyrhizobium (estirpes UFLA3&amp;#8209;84, BR 3267, INPA3&amp;#8209;11B e BR 3262). Em casa de vegetação, conduziu-se experimento em vasos de Leonard, com os mesmos tratamentos. Foram avaliados: massa de matéria seca da parte aérea, além de número e massa de nódulos 25 dias após a emergência das plantas. No campo, dois experimentos foram conduzidos, tendo-se utilizado a estirpe BR...
Tipo: Artigo de periódico
Palavras-chave: Fixação biológica de nitrogênio; Biological nitrogen fixation.; Feijão; Doença; Semente; Nodulação; Vigna Unguiculata.; Nodulation; Bradyrhizobium.
Ano: 2013
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/953437

Genomic basis of broad host range and environmental adaptability of Rhizobium tropici CIAT 899 and Rhizobium sp. PRF 81 which are used in inoculants for common bean (Phaseolus vulgaris L.).
Provedor de dados: 119
Autores: ORMEÑO-ORRILLO, E.; MENNA, P.; ALMEIDA, L. G. P.; JAVIER OLLERO, F.; NICOLÁS, M. F.; RODRIGUES, E. P.; NAKATANI, A. S.; BATISTA, J. S. S.; CHUEIRE, L. M. de O.; SOUZA, R. C.; VASCONCELOS, A. T. R.; MEGÍAS, M.; HUNGRIA, M.; MARTÍNEZ-ROMERO, E.
Tipo: Separatas
Palavras-chave: Feijão; Fixação de nitrogênio; Nodulação; Beans; Nitrogen fixation; Nodulation.
Ano: 2012
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/949496

Capacidade de genótipos de feijoeiro de fixar N2 atmosférico.
Provedor de dados: 119
Autores: PEREIRA, P. A. A.; ARAUJO, R. S.; ROCHA, R. E. M. D.; STEINMETZ, S.
Foi conduzido em campo, programa de tiragem para avaliar a potencialidade de diversos genótipos de feijoeiro (Phaseolus vulgaris L.) para fixação de N2 atmosférico. Observou-se uma ampla variabilidade no peso da matéria seca dos nódulos e na atividade da ntrogenase (N2-ase) dos genótipos estudados. A atividade media da nitrogenase (N2-ase) foi maior na floração do que no enchimento dos grãos das plantas de feijão, o que indicou uma senescência dos nódulos nesta fase fisiológica. Mais de 40% dos genótipos estudados apresentaram uma massa nodular superior a 92,5 mg de peso da matéria seca dos nódulos/planta, e alguns alcançaram 200 mg deste peso, podendo ser comparados a massa nodular de outras leguminosas tidas como eficientes na simbiose com bactérias do...
Tipo: Artigo de periódico
Palavras-chave: Cerrado; Feijão; Genótipo; Nitrogênio; Nodulação; Phaseolus Vulgaris; Fixação de Nitrogênio; Beans; Nodulation; Nitrogen fixation.
Ano: 1984
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/205104

Efeito de doses de inoculante turfoso na fixacao biologica do nitrogenio pela cultura da soja.
Provedor de dados: 119
Autores: BRANDAO JUNIOR, O.; HUNGRIA, M.
RESUMO: A inoculação e a reinoculação da soja [Glycine max (L.) Merrill] são essenciais para garantir a maximização do processo de fixação biológica do N2. A maioria dos inoculantes comercializados para a soja no País utiliza, como veículo, a turfa, mas existem controvérsias sobre a dose a ser recomendada, especialmente em condições desfavoráveis ou em áreas já inoculadas. Assim, para a região central do Brasil, tem sido recomendado usar 1.000 g de inoculante/50 kg de sementes, com solução açucarada como adesivo. Neste estudo, porém, constatou-se que a dose máxima de turfa aderida às sementes está entre 500 g e 600 g de inoculante/50 kg. O uso de doses superiores resultará, portanto, em acúmulo na semeadora, dificultando o plantio. Em condições de casa de...
Tipo: Separatas
Palavras-chave: Inoculation.; Inoculação; Nodulação; Semente; Tratamento; Soja.; Bradyrhizobium; Nodulation; Seed treatment.
Ano: 2000
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/444842

Expressão dos genes nodC, nodW e nopP em Bradyrhizobium japonicum estirpe CPAC 15 avaliada por RT-qPCR.
Provedor de dados: 119
Autores: BORTOLAN, S.; BARCELLOS, F. G.; MARCELINO, F. C.; HUNGRIA, M.
Resumo O objetivo deste trabalho foi avaliar a expressão, por RT-qPCR, dos genes de nodulação nodC e nodW e do gene nopP da estirpe CPAC 15, que provavelmente atuam na infecção das raízes da soja. Foram realizados dois experimentos. No primeiro, a expressão dos genes foi avaliada nas células após a incubação com genisteína por 15 min, 1, 4 e 8 horas. Os resultados revelaram que os três genes apresentaram maior expressão imediatamente após o contato com o indutor (15 min). No segundo experimento, a bactéria foi cultivada na presença de indutores (genisteína ou exsudatos de sementes de soja) por 48 horas. A expressão dos três genes foi maior na presença de genisteína, com valores de expressão para nodC, nodW e nopP superiores ao controle. Os resultados...
Tipo: Artigo de periódico
Palavras-chave: Genes de nodulação; Sistema de secreção tipo III; Nodulation genes; Fixação de nirogênio.; Soja; Flavonóide; Nodulação.; Soybeans; Flavonoids; Gene expression; Nitrogen fixation; Nodulation; Type III secretion system.
Ano: 2009
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/631360

Crescimento e nodulação da soja em função de culturas de entressafra e adubação nitrogenada.
Provedor de dados: 119
Autores: YOKOYAMA, A. H.; RIBEIRO, R. H.; ZUCARELI, C.; BALBINOT JUNIOR, A. A.; NOGUEIRA, M. A.; FRANCHINI, J. C.; DEBIASI, H.; COELHO, A. E.
Tipo: Parte de livro
Palavras-chave: Soja; Crescimento; Nodulação; Entressafra; Fertilizante Nitrogenado; Fixação de Nitrogênio; Soybeans; Nitrogen fixation; Vegetative growth; Nodulation.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093766

Horizontal transfer of symbiosis genes within and between rhizobial genera: occurrence and importance.
Provedor de dados: 119
Autores: ANDREWS, M.; DE MEYER, M.; JAMES, E. K.; ST. EPKOWSKI, T.; HODGE, S.; SIMON, M. F.; YOUNG, J. P. W.
Tipo: Separatas
Palavras-chave: Lateral gene transfer; N2 fixation; Nod genes; Fabaceae; Legumes; Nodulation.
Ano: 2018
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103949

Ureides sap content in common bean genotypes selected for high-nodulation efficiency.
Provedor de dados: 119
Autores: KNUPP, A. M.; SOUZA, T. L. P. O. de; FERREIRA, E. P. de B.; ARAÚJO, A. P. de.
This work presents results of the field evaluation of 15 common bean genotypes previously selected in a greenhouse screening which the ureides sap contents were quantified by contrasting the performance of those genotypes under N fertilization and under Rhizobium inoculation.
Tipo: Artigo de periódico
Palavras-chave: Feijão; Phaseolus Vulgaris; Fertilizante Nitrogenado; Nitrogênio; Rhizobium; Inoculação; Beans; Nodulation; Ureides; Nitrogen fertilizers.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119212

Automated and estimation methods to count nodule number in common bean.
Provedor de dados: 119
Autores: DIAS, P. A. S.; MELO, P. G. S.; PEREIRA, H. S.; FERREIRA, E. P. de B.
The nodulation on legume roots is an important trait to evaluate the symbiotic efficiency, but very laborious and time spending, what can limit the effectiveness of legume breeding programs. Based on the need to simplify the assessment of nodule number, this work aimed to evaluate the accuracy and time spent to assess nodule number in common bean using different methods of estimation and counting, compared to manual count (MC), which was considered the standard method. The estimation methods consisted of two simple techniques with two sampling range: graph paper with sampling range from 10 to 20 nodules (GPR1) and graph paper with sampling range from 21 to 40 nodules (GPR2), Petri dish with sampling range from10 to 20 nodules (PDR1), Petri dish with...
Tipo: Artigo de periódico
Palavras-chave: Feijão; Phaseolus vulgaris; Fixação de nitrogênio; Nodulação; Beans; Nitrogen fixation; Nodulation.
Ano: 2017
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078143

Rhizobial diversity from stem and root nodules of Discolobiumand Aeschynomene.
Provedor de dados: 119
Autores: MARTINS, C. M.; BORGES, W. L.; COSTA JÚNIOR, J. de S.; RUMJANEK, N. G.
Among the genera that exhibit stem nodulation, Aeschynomeneand Discolobiumare found in the Pantanal Mato-grossense (wetlands in the state ofMato Grosso, Brazil). Isolates obtained from the stem and root nodules of D. pulchellum, D. psoraleaefolium, D. leptophyllumand A. fluminensiswere collected from various locations in the Pantanal de Poconésub-region and phenotypically characterized and genotyped by restriction analysis of the 16S rDNA gene. Of the 282 isolates obtained from the stem and root nodules, 84.3% alkalized YMA media and 74.1% showed slow growth. No differences in either the phenotype or the genotype among the rhizobial populations isolated from the root or stem nodules of the species Discolobiumand A. fluminensis were observed. Among the...
Tipo: Artigo de periódico
Palavras-chave: Symbiose; Biological nitrogen fixation; Vegetable.; Anatomia vegetal; Nodulação; Simbiose; Fixação simbiótica de nitrogênio; Legume; Plant anatomy.; Nodulation.
Ano: 2015
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1015336

Metabólitos secundários e e coinoculação com Azospirillum na nodulação de soja afetada por veranico.
Provedor de dados: 119
Autores: HONDA, C.; SANTOS, M. B.; CEREZINI, P.; KUWANO, B. H.; HUNGRIA, M.; NOGUEIRA, M. A.
A restrição hídrica é um dos principais fatores limitantes à cultura da soja (Glycine max L.), com prejuízos à fisiologia da planta, o que também prejudica a fixação biológica de nitrogênio (FBN). A busca por estratégias que possam garantir os benefícios da FBN frente a estresses abióticos, como a seca, torna-se importante diante das mudanças climáticas globais, com o aumento da frequência de ocorrência de veranicos. O objetivo desse trabalho foi avaliar a influência da coinoculação de Bradyrhizobium com Azospirillum e da adição de metabólitos secundários na dinâmica de nodulação e nos componentes de produção em soja que sofreu um período de veranico. Foi conduzido um experimento a campo na Embrapa Soja, Londrina, PR (23°12' S e 51°11' W, altitude de 585 m...
Tipo: Anais e Proceedings de eventos
Palavras-chave: Soja; Nodulação; Soybeans; Nodulation.
Ano: 2014
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010639

Inibição da nodulação por N-mineral em soja.
Provedor de dados: 119
Autores: SANTOS, M. B.; CEREZINI, P.; KUWANO, B. H.; TERASSI, F. S.; HUNGRIA, M.; NOGUEIRA, M. A.
Apesar da indicação da pesquisa de que a inoculação adequada com bactérias do gênero Bradyrhizobium é suficiente para suprir a demanda de N pela cultura da soja pela fixação biológica de nitrogênio (FBN), alguns agricultores ainda têm feito o uso de N mineral. Entretanto, a adubação nitrogenada aumenta os custos de produção, apresenta riscos de danos ambientais, e pode reduzir a nodulação e a eficiência da FBN. O objetivo desse trabalho foi avaliar o efeito de doses crescentes de N mineral na nodulação da soja. Utilizaram-se duas cultivares de soja: BMX Potência e BRS 360, inoculadas com Bradyrhizobium no momento da semeadura. Os tratamentos compreenderam 0, 5, 10, 15, 25, 50, 75, 100 e 125 mg de N vaso-1, em seis repetições. Para cada cultivar, um...
Tipo: Separatas
Palavras-chave: Fixação de nitrogênio; Soja; Nodulação; Nitrogen fixation; Soybeans; Nodulation.
Ano: 2014
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1020542

Efeito da coinoculação e de fatores Nod na nodulação em soja.
Provedor de dados: 119
Autores: CEREZINI, P.; KUWANO, B. H.; SANTOS, M. B.; TERASSI, F. S.; IMACHITA, R.; HUNGRIA, M.; NOGUEIRA, M. A.
A capacidade de leguminosas, como a soja (Glycine max), em adquirir N via fixação biológica (FBN) representa benefícios econômicos e ambientais, pois substitui o uso de fertilizantes nitrogenados. Dessa forma, com intuito de aumentar a eficácia desse processo biológico, buscam-se estratégias que favoreçam o estabelecimento e a eficiência das simbioses rizóbios-leguminosas. O objetivo desse trabalho foi avaliar a dinâmica da nodulação em soja inoculada com Bradyrhizobium e coinoculada com Azospirillum ou acrescida de metabólitos secundários (Fatores Nod, oligossacarídeos lipoquitínicos). Realizou-se um experimento a campo na Embrapa Soja, Londrina, PR (23°12'S e 51°11'W, altitude de 585 m e clima Cfa, segundo Köppen), durante a safra 2013/2014. O...
Tipo: Anais e Proceedings de eventos
Palavras-chave: Soja; Nodulação; Soybeans; Nodulation.
Ano: 2014
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1010723

Nitrogen sources on agronomic traits in carioca common bean lines developed under mineral nitrogen fertilization.
Provedor de dados: 119
Autores: DIAS, P. A. S.; MELO, P. G. S.; FERREIRA, E. P. de B.; MELO, L. C.; SOUZA, T. L. P. O. de; FARIA, L. C. de; ALMEIDA, V. M. de; PEREIRA, H. S.
Despite the importance of symbiotic nitrogen fixation (SNF) as a nitrogen source for leguminous plants, there are few reports of common bean breeding programs aiming at efficiency in SNF. This study aimed to analyze the interaction between elite lines of common bean with carioca grains and the nitrogen source (mineral fertilizer or SNF), and to select lines with wide adaptability, stability, high agronomic performance, and superiority in nodulation. Nineteen lines with carioca grains were evaluated in 12 environments in Brazil. In each environment, one experiment with mineral nitrogen fertilization and another with Rhizobium inoculation were set up, and agronomic traits were evaluated. Nodulation traits were evaluated in two years at one out of five...
Tipo: Artigo de periódico
Palavras-chave: Feijão; Phaseolus Vulgaris; Nodulação; Rhizobium; Fixação Simbiótica de Nitrogênio; Fertilizante Nitrogenado; Nitrogen fixation; Nodulation; Beans; Agronomic traits; Mineral fertilizers.
Ano: 2024
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1164079

Efeito da reinoculacao na soja [Glycine max (L.) Merrill] em um solo com populacao estabelecida de Bradyrhizobium com as extirpes SEMIA 566, 586, 587, 5019, 5079 e 5080.
Provedor de dados: 119
Autores: NISHI, C. Y. M.; HUNGRIA, M.
Foram conduzidos tres experimentos em um Latossolo Roxo, no Estado do Parana, com populacao de Bradyrhizobium estabelecida (2,21x105 celulas/g de solo, para verificar os efeitos da reinoculacao na soja [Glycine max (L.) Merrill] na fixacao biologica do N2 e na produtividade. Todas as seis estirpes testadas, duas da especie B. japonicum e quatro da especie B. elkanii, foram capazes de se estabelecer na rizosfera, aumentando a porcentagem de ocupacao dos nodulos. Na safra de 92/93 foram obtidos, pela inoculacao, incrementos na produtividade da soja de ate 420 kg/ha, com 13,5% mais de N total nos graos, em relacao ao controle sem inoculacao e com fertilizacao nitrogenada. Quando o trigo (Triticum aestivum L.) foi plantado como cultura de inverno, nas mesmas...
Tipo: Artigo de periódico
Palavras-chave: Ecologia microbiana; Fixacao biologica do N2; Metabolismo do N; Brasil; Parana; Soybean; Nitrogen fertilization; Biological fixation N2.; Fertilizante Nitrogenado; Glycine Max; Nodulação; Triticum Aestivum; Trigo; Soja.; Bradyrhizobium; Brazil; Nodulation; Nitrogen metabolism; Microbial ecology; Wheat.
Ano: 1996
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/444790

Genetic variation in symbiotic islands of natural variant strains of soybean Bradyrhizobium japonicum and Bradyrhizobium diazoefficiens differing in competitiveness and in the efficiency of nitrogen fixation.
Provedor de dados: 119
Autores: BENDER, F. R.; NAGAMATSU, S. T.; DELAMUTA, J. R. M.; RIBEIRO, R. A.; NOGUEIRA, M. A.; HUNGRIA, M.
Tipo: Artigo de periódico
Palavras-chave: Nodulação; Simbiose; Fixação de Nitrogênio; Soja; Soybeans; Nitrogen fixation; Nodulation; Symbiosis.
Ano: 2022
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1150686

Rhizobial inoculation and molybdenum fertilization in peanut crops grown in a no tillage system after 20 years of pasture.
Provedor de dados: 119
Autores: CRUSCIOL, C. A. C.; FERRARI NETO, J.; MUI, T. S.; FRANZLUEBBERS, A. J.; COSTA, C. H. M. DA; CASTRO, G. S. A.; RIBEIRO, L. C.; COSTA, N. R.
Peanut (Arachis hypogea) is an important legume grain consumed by humans and utilized for effective nutrient cycling in a diverse cropping system. Areas that have been cultivated with perennial pasture for decades may have nutritional deficiencies and lack a sufficient population of atmospheric nitrogen-fixing bacteria. Molybdenum is an essential micronutrient that is part of the enzyme nitrogenase contained within symbiotic Bradyrhizobium bacteria, which are responsible for fixing nitrogen in legumes. Our objective was to evaluate the effects of application of Mo at different rates and a rhizobial inoculant on peanut growth characteristics. The experiment was conducted in the 2009/2010 growing season in a no-tillage cropping system following 20-year use...
Tipo: Artigo de periódico
Palavras-chave: Symbiotic fixation; Nitrogenase activity; Arachis hypogaea subsp. hypogaea; Urochloa brizantha; Nodulation.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108077

Efeito da densidade de plantio em soja na nodulação, concentração de nutrientes e rendimento.
Provedor de dados: 119
Autores: LUCA, M. J. de; HUNGRIA, M.
Para manter a sustentabilidade dos sistemas agrícolas é importante aperfeiçoar o uso dos recursos naturais. Cerca de 87% das vagens de soja abortam antes de alcançar 2 cm de comprimento. Entretanto, maior luminosidade na parte inferior do dossel resultam num aumento na retenção de vagens e na produtividade da soja. A inoculação com Bradyrhizobium permite altos rendimentos da soja, dispensando o uso de N mineral, mas os resultados podem variar com a estirpe empregada. A densidade de plantio por sua vez modifica a absorção de nutrientes. Assim, o objetivo deste trabalho foi estudar o efeito combinado da diminuição na densidade (plantas/m2) e inoculação com duas estirpes de B. japonicum no rendimento, nodulação e concentração de nutrientes em folhas de soja....
Tipo: Parte de livro
Palavras-chave: Soja; Inoculação; Nodulação; Fixação de nitrogênio; Soybeans; Nodulation; Nitrogen fixation; Inoculation methods.
Ano: 2012
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/934697

Genome sequence of Bradyrhizobium embrapense strain CNPSo 2833T, isolated from a root nodule of Desmodium heterocarpon.
Provedor de dados: 119
Autores: DELAMUTA, J. R. M.; RIBEIRO, R. A.; GOMES, D. F.; SOUZA, R. C.; CHUEIRE, L. M. O.; HUNGRIA, M.
Tipo: Separatas
Palavras-chave: Fixação de nitrogênio; Simbiose; Genoma; Nodulação; Nitrogen fixation; Symbiosis; Genome; Nodulation.
Ano: 2017
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080233

Flavonoid profiling and nodulation of some legumes in response to the allelopathic stress of Sonchus oleraceus L.
Provedor de dados: 39
Autores: Gomaa,Nasr Hassan; Hassan,Mahmoud Omar; Fahmy,Gamal Mohammad; González,Luís; Hammouda,Ola; Atteya,Atteya Mostafa.
Annual sowthistle (Sonchus oleraceus) has been reported to produce allelopathic effects. Two greenhouse experiments were conducted to estimate the allelopathic potential of both plant residue and root exudates of S. oleraceus on flavonoid composition and nodulation in a leguminous crop, Trifolium alexandrinum, and in two leguminous weeds, Melilotus indicus and T. resupinatum. The results of high performance liquid chromatography-mass spectrometry (HPLC-MS/MS) showed that all three legumes contained six flavonoid aglycones: apigenin, daidzein, kaempferol, luteolin, myricetin and quercetin; and seven flavonoid glycosides: daidzin, genistin, hesperidin, hyperoside, kaempferol-7-O-glucoside, naringin and rutin. In general, both plant residue and root exudates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Flavonoids; Legumes; Nodulation; Sonchus oleraceus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400553

Di-nitrogen fixation at the early and late growth stages of soybean
Provedor de dados: 1
Autores: Hamawaki, Raphael Lemes; Kantartzi, Stella K.
 Soybean derives a significant portion of the required nitrogen (N) from the symbiosis with rhizobia bacteria. However, information on the available genetic variation for N2 fixation capacity in different growth stages of soybean is limited. The objective of this study was to investigate the N2 fixation capacity of 22 soybean lines compared with that of non-nodulating and supernodulating checks at the early and late growth stages and identify the most informative traits for selection. Two cycles of greenhouse experiments were carried out to estimate the percentage of N derived from the atmosphere (%Ndfa) as well as 10 different traits related to N2 fixation. The results showed that %Ndfa was significantly different among the lines at the early and late...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; %Ndfa; 15N dilution technique; Nodulation; Symbiosis.; (Agronomia; Fitotecnia; Melhoramento Vegetal).
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36372

Di-nitrogen fixation at the early and late growth stages of soybean
Provedor de dados: 1
Autores: Hamawaki, Raphael Lemes; Kantartzi, Stella K.
 Soybean derives a significant portion of the required nitrogen (N) from the symbiosis with rhizobia bacteria. However, information on the available genetic variation for N2 fixation capacity in different growth stages of soybean is limited. The objective of this study was to investigate the N2 fixation capacity of 22 soybean lines compared with that of non-nodulating and supernodulating checks at the early and late growth stages and identify the most informative traits for selection. Two cycles of greenhouse experiments were carried out to estimate the percentage of N derived from the atmosphere (%Ndfa) as well as 10 different traits related to N2 fixation. The results showed that %Ndfa was significantly different among the lines at the early and late...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: (5.01.00.00-9; 5.01.03.00-8; 5.01.03.05-9) Glycine max; %Ndfa; 15N dilution technique; Nodulation; Symbiosis. (Agronomia; Fitotecnia; Melhoramento Vegetal).
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36372

Application of date palm leaves compost (DPLC) and plant growth promoting rhizobacteria(PGPR) for controlling faba bean root rot disease in New Valley, Egypt
Provedor de dados: 111
Autores: Abdel-Monaim, Montaser.
Abstract This study was designed to investigate the effect of date palm leaves compost (DPLC) individually and/or in combined with plant growth promoting rhizobacteria(PGPR) for controlling faba bean root rot disease caused by Rhizoctonia solani andFusarium solani under greenhouse and field conditions as well as plant growth and yield parameters. The obtained data indicate thatDPLC at different concentrations significantly decreased root rot incidence either under artificial infection in pot or natural infection in field as well as increased growth and yield parameters during growing season 2013-2014. Date palm leaves compost at 8 ton/feddan recorded the highest protection against root rot disease and gave the highest increased of plant growth and yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: M. F. Abdel-Monaim; Manal S. M. Khalil; Sahar H. Abdel-Baset Date palm leaves compost (DPLC); Faba bean; Growth and yield parameters; Nodulation; PGPR; Root rot disease.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4423

Nodulation and N2 fixation effectiveness of Bradyrhizobium strains in symbiosis with Adzuki Bean, Vigna angularis
Provedor de dados: 52
Autores: Delić,Dušica; Stajković,Olivera; Rasulić,Nataša; Kuzmanović,Djordje; Jošić,Dragana; Miličić,Bogić.
In pot experiment, one isolate Knj from a Serbian soil, four strains of Bradyrhizobium japonicum and three strains of Bradyrhizobium spp. were examined for the effect on adzuki bean nodulation and effectiveness in symbiotic N2 fixation. All the tested strains produced root nodules in adzuki bean. Strains of B. japonicum showed high potential of N2 fixation, particularly 525 and 542. B. japonicum strains resulted 65-71% shoot dry weight and 99-138% total N content of uninoculated control with full N content (100%). No significant difference was found between the plants inoculated with Bradyrhizobium spp. strains and uninoculated control plants without N (40-42 and 42% shoot dry weight, respectively), which indicated symbiotic N2 fixation inactivity of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bradyrhizobium; Adzuki bean; Nodulation; Symbiotic N fixation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200007

Draft genome sequence of Bradyrhizobium sp. strain BR 3267, an elite strain recommended for cowpea inoculation in Brazil
Provedor de dados: 58
Autores: Simões-Araújo,Jean Luiz; Leite,Jakson; Passos,Samuel Ribeiro; Xavier,Gustavo Ribeiro; Rumjanek,Norma Gouvêa; Zilli,Jerri Édson.
Abstract The strain BR 3267 is a nitrogen-fixing symbiotic bacteria isolated from soil of semi-arid area of Brazilian Northeast using cowpea as the trap plant. This strain is used as commercial inoculant for cowpea and presents high efficient in nitrogen fixation as consequence of its adaptation potential to semi-arid conditions. We report here the draft genome sequence of Bradyrhizobium sp. strain BR 3267, an elite bacterium used as inoculant for cowpea. Whole genome sequencing of BR 3267 using Illumina MiSeq sequencing technology has 55 scaffolds with a total genome size of 7,904,309 bp and C+G 63%. Annotation was added by the RAST prokaryotic genome annotation service and has shown 7314 coding sequences and 52 RNA genes.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Biological nitrogen fixation; Next generation sequencing; Nodulation; Semi-arid region.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400781

Nitrogen-fixing bacteria and arbuscular mycorrhizal fungi in Piptadenia gonoacantha (Mart.) Macbr.
Provedor de dados: 58
Autores: Oliveira Júnior,Joel Quintino de; Jesus,Ederson da Conceição; Lisboa,Francy Junio; Berbara,Ricardo Luis Louro; Faria,Sergio Miana de.
Abstract The family Leguminosae comprises approximately 20,000 species that mostly form symbioses with arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria (NFB). This study is aimed at investigating and confirming the dependence on nodulation and biological nitrogen fixation in the specie Piptadenia gonoacantha (Mart.) Macbr., which belongs to the Piptadenia group. Two consecutive experiments were performed in a greenhouse. The experiments were fully randomized with six replicates and a factorial scheme. For the treatments, the two AMF species and three NFB strains were combined to nodulate P. gonoacantha in addition to the control treatments. The results indicate this species’ capacity for nodulation without the AMF; however, the AMF + NFB...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synergy; Nodulation; Biological nitrogen fixation; “Pau-jacaré”.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100095

Draft genome sequence of Bradyrhizobium sp. strain BR 3262, an effective microsymbiont recommended for cowpea inoculation in Brazil
Provedor de dados: 58
Autores: Simões-Araújo,Jean Luiz; Leite,Jakson; Marie Rouws,Luc Felicianus; Passos,Samuel Ribeiro; Xavier,Gustavo Ribeiro; Rumjanek,Norma Gouvêa; Zilli,Jerri Édson.
Abstract The strain BR 3262 was isolated from nodule of cowpea (Vigna unguiculata L. Walp) growing in soil of the Atlantic Forest area in Brazil and it is reported as an efficient nitrogen fixing bacterium associated to cowpea. Firstly, this strain was assigned as Bradyrhizobium elkanii, however, recently a more detailed genetic and molecular characterization has indicated it could be a Bradyrhizobium pachyrhizi species. We report here the draft genome sequence of B. pachyrhizi strain BR 3262, an elite bacterium used as inoculant for cowpea. The whole genome with 116 scaffolds, 8,965,178 bp and 63.8% of C+G content for BR 3262 was obtained using Illumina MiSeq sequencing technology. Annotation was added by the RAST prokaryotic genome annotation service and...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Atlantic forest area; Biological nitrogen fixation; Next generation sequencing; Nodulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400783

Genome sequence of Bradyrhizobium embrapense strain CNPSo 2833T, isolated from a root nodule of Desmodium heterocarpon
Provedor de dados: 58
Autores: Delamuta,Jakeline Renata Marçon; Ribeiro,Renan Augusto; Gomes,Douglas Fabiano; Souza,Renata Carolini; Chueire,Ligia Maria Oliveira; Hungria,Mariangela.
Abstract Bradyrhizobium embrapense CNPSo 2833T is a nitrogen-fixing symbiont of the legume pasture Desmodium. Its draft genome contains 8,267,832 bp and 7876 CDSs. The symbiotic island includes nodulation and nitrogen fixation genes resembling the operon organization of B. japonicum. Several CDSs related to secretion proteins and stress tolerance were also identified.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological nitrogen fixation; Genome; Nodulation; Symbiosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100009

Symbiotic potential and survival of native rhizobia kept on different carriers
Provedor de dados: 58
Autores: Ruíz-Valdiviezo,Víctor Manuel; Canseco,Lucía María Cristina Ventura; Suárez,Luis Antonio Castillo; Gutiérrez-Miceli,Federico Antonio; Dendooven,Luc; Rincón-Rosales,Reiner.
Native rhizobia are ideal for use as commercial legume inoculants. The characteristics of the carrier used to store the inoculants are important for the survival and symbiotic potential of the rhizobia. The objective of this study was to investigate the effects of peat (PEAT), perlite sugarcane bagasse (PSB), carboxymethyl cellulose plus starch (CMCS), and yeast extract mannitol supplemented with mannitol (YEMM) on the survival, nodulation potential and N2 fixation capacity of the native strains Sinorhizobium mexicanum ITTG R7T and Rhizobium calliandrae LBP2-1T and of the reference strain Rhizobium etli CFN42T. A factorial design (4 × 3) with four repetitions was used to determine the symbiotic potential of the rhizobial strains. The survival of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobia; Inoculants; Nodulation; Nitrogen fixation; Carrier.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300735

Draft genome sequence of Bradyrhizobium manausense strain BR 3351T, an effective symbiont isolated from Amazon rainforest
Provedor de dados: 58
Autores: Simões-Araújo,Jean Luiz; Rumjanek,Norma Gouvêa; Xavier,Gustavo Ribeiro; Zilli,Jerri Édson.
ABSTRACT The strain BR 3351T (Bradyrhizobium manausense) was obtained from nodules of cowpea (Vigna unguiculata L. Walp) growing in soil collected from Amazon rainforest. Furthermore, it was observed that the strain has high capacity to fix nitrogen symbiotically in symbioses with cowpea. We report here the draft genome sequence of strain BR 3351T. The information presented will be important for comparative analysis of nodulation and nitrogen fixation for diazotrophic bacteria. A draft genome with 9,145,311 bp and 62.9% of GC content was assembled in 127 scaffolds using 100 bp pair-end Illumina MiSeq system. The RAST annotation identified 8603 coding sequences, 51 RNAs genes, classified in 504 subsystems.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon forest; Biological nitrogen fixation; Next generation sequencing; Nodulation; Cowpea.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400610

Integrated use of Rhizobium leguminosarum, Plant Growth Promoting Rhizobacteria and Enriched Compost for Improving Growth, Nodulation and Yield of Lentil (Lens culinaris Medik.)
Provedor de dados: 117
Autores: Iqbal,Muhammad Asif; Khalid,Muhammad; Shahzad,Sher Muhammad; Ahmad,Maqshoof; Soleman,Nawaf; Akhtar,Naeem.
Maintenance of high bacterial population in the rhizosphere improves the efficiency of these organisms. This high bacterial population can be maintained by the application of enriched compost which supports their growth and activities. Thus integrated use of Rhizobium, plant growth promoting rhizobacteria (PGPR) containing 1-aminocyclopropane-1-carboxylate deaminase (ACC-deaminase) and P-enriched compost (PEC) could be highly effective for promoting growth, nodulation, and yield of lentil (Lens culinaris Medik.). A field study was conducted to evaluate the potential of Rhizobium, PGPR containing ACC-deaminase and PEC for promoting growth of lentil. For this study, the soil type was sandy clay loam soil having pH 7.6; EC (electrical conductivity) 2.8 dS...
Tipo: Journal article
Palavras-chave: Co-inoculation; Biological N fixation; Rhizobium; ACC-deaminase; P-enriched compost; Nodulation; Yield.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100017

Genetic and phenotypic diversity of Rhizobium isolates from Southern Ecuador
Provedor de dados: 64
Autores: Torres-Gutiérrez,Roldán; Granda-Mora,Klever Iván; Alvarado-Capó,Yelenys; Rodriguez,Aminael Sánchez; Mogollón,Noroska Gabriela Salazar; Almeida,José Rafael de.
ABSTRACT Rhizobium-legume symbioses play relevant roles in agriculture but have not been well studied in Ecuador. The aim of this study was to characterize the genetic and phenotypic diversity of Rhizobium isolates associated with Phaseolus vulgaris from southern Ecuador. Morpho-cultural characterization, biochemical tests and physiological analyses were conducted to authenticate and determine the diversity of bacteria Rhizobium-like isolates. The genetic diversity of the isolates was determined by molecular techniques, which consisted of bacteria DNA extraction and amplification and sequencing of the 16S rRNA gene. The nodulation parameters and nitrogen fixation for P. vulgaris under greenhouse conditions were also assessed to determine the phenotypic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Diazotrophic bacteria; 16S rRNA gene; Nodulation; Indole acetic acid.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600634

Soil management and application of agricultural gypsum in a Planosol for soybean cultivation
Provedor de dados: 65
Autores: Marchesan,Enio; Tonetto,Felipe; Teló,Gustavo Mack; Coelho,Lucas Lopes; Aramburu,Bruno Behenck; Trivisiol,Vinicius Severo.
ABSTRACT: This study investigated the effects of soil management systems, tillage, and application of gypsum agricultural to soil, on soybean development in lowland areas. The experiment was carried out on an Alfisol in a randomized complete block design in a factorial arrangement. The two soil tillage practices were without deep tillage and with deep tillage. Gypsum treatments were no gypsum application, 500kg of gypsum ha-1, 1000kg of gypsum ha-1, and 1500kg of gypsum ha-1. Deep tillage resulted in less soil resistance to root penetration during ryegrass cultivation during the soybean offseason, 11 months after applying the management treatments, resulting in higher dry mass of ryegrass in the offseason and higher soybean yield in the following year.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L.; Deep tillage; Nodulation; Grain yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100201

Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor
Provedor de dados: 65
Autores: Amarante,Cassandro Vidal Talamini do; Canci,Paulo Cesar.
The effect of metolachlior [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetamide] at rates of 0.0, 1.5, 3.0, 4.5, and 6.0kg a.i./ha on the growth and nodulation of soybean cv. BR-4 cultivated on two substrata (soil and soil + sand) and inoculated with Bradyrhizobium japonicum (Kirchnea-1896) Jordan 1982, 137 (Denotes that this name has been validly published in the oficial publicadon, Intemational Joumal of Systematic Bacteriology), was studied under greenhouse conditions at Lages, SC, Brazil, in 1992-93. The experimental design was completely randomized with four replicates. The experimental unit was a container with two plants. Fifty-two days after the emergence (at R1 stage - beginning of flowering) the plants were harvested and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metolachlor; Glycine max (L.) Merril; Growth; Nodulation.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781995000300001

Respuesta de la simbiosis tripartita Rhizobium-Leguminosa-Micorriza arbuscular ante vanadio y níquel.
Provedor de dados: 32
Autores: Vidal Fernández, Judith Estela.
Este trabajo evaluó la respuesta de la simbiosis tripartita Rhizobium-leguminosa-micorriza arbuscular en presencia de vanadio (V) y níquel (Ni). El trabajo se dividió en dos fases experimentales; la primera fase estudió el comportamiento de la simbiosis Rhizobium tropici-Phaseolus vulgaris ante concentraciones de V o Ni (0, 25, 50, 75, 100 y 120 mg L-1) y su efecto en el contenido elemental en nódulos, en un sistema de bolsa de crecimiento bajo condiciones controladas (25°C, 70% HR y 12h de fotoperiodo) durante 30 días. En las plantas con V, la nodulación inició al cuarto día después de la inoculación y tuvo un máximo de 40 nódulos por planta en el testigo y 6 nódulos en las concentraciones de 50 y 100 mg L-1. La mayor actividad nitrogenasa (AN) se...
Palavras-chave: Nodulación; Metales; Fitorremediación; Simbiosis; Phaseolus; Rhizophagus; Nodulation; Metals; Phytorremediation; Symbiosis; Edafología; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/753

Aluminium tolerance in the tropical leguminous N2-fixing shrub Acaciella angustissima (Mill.) Britton &amp;amp; Rose inoculated with Sinorhizobium mexicanum
Provedor de dados: 73
Autores: RINCÓN-ROSALES,REINER; RUÍZ-VALDIVIEZO,VÍCTOR M; MONTES-MOLINA,JOAQUÍN A; GUTIÉRREZ-MICELI,FEDERICO A; DENDOOVEN,LUC.
The tropical legume Acaciella angustissima inoculated with or without Sinorhizobium mexicanum ITTG R7T strain was cultivated in an aluminium (Al) spiked soil to study its tolerance towards this metal. Seedlings of A. angustissima were grown in soil with 0, 2, 4 or 6 mg Al kg-1. The effect of Al and inoculation on growth, nodulation, and nitrogen and tannins content in the plants was monitored. Height and total and dry root weight of plantlets decreased significantly when soil was spiked with Al, but increased when inoculated. Al decreased the number of nodules. Inoculum increased total N and tannin content of the plantlets. It was found that Al reduced the growth of the tropical leguminous N2-fixing shrub A. angustissima, while inoculation with S....
Tipo: Journal article
Palavras-chave: Aluminium tolerance; Plant growth; Nodulation; Nitrogen and tannins content; Sinorhizobium mexicanum ITTG R7T; Soil.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200009

Genetic diversity and symbiotic compatibility among rhizobial strains and Desmodium incanum and Lotus spp. plants
Provedor de dados: 74
Autores: Granada,Camille E; Strochein,Marcos; Vargas,Luciano K; Bruxel,Manuela; Sá,Enilson Luiz Saccol de; Passaglia,Luciane M.P.
This work aimed to evaluate the symbiotic compatibility and nodulation efficiency of rhizobia isolated from Desmodium incanum, Lotus corniculatus, L. subbiflorus, L. uliginosus and L. glaber plants by cross-inoculation. Twelve reference strains and 21 native isolates of rhizobia were genetically analyzed by the BOX-PCR technique, which showed a high genetic diversity among the rhizobia studied. The isolates were also characterized based on their production of indolic compounds and siderophores, as well as on their tolerance to salinity. Fifteen of the 33 rhizobia analyzed were able to produce indolic compounds, whereas 13 produced siderophores. All the tested rhizobia were sensitive to high salinity, although some were able to grow in solutions of up to 2%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobia; Nodulation; Nitrogen; Specificity.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000300012

Metodos de aplicacao de micronutrientes na nodulacao e na fixacao biologica do N2 em soja.
Provedor de dados: 14
Autores: CAMPO, R. J.; ALBINO, U. B.; HUNGRIA, M.
Tipo: Folhetos
Palavras-chave: Micronutriente; Soybean; Fixação de Nitrogênio; Nodulação; Soja; Nitrogen fixation; Nodulation; Trace elements.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/461380

O magnesio na fertilidade dos solos do cerrado.
Provedor de dados: 14
Autores: REIN, T. A.; SOUSA, D. M. G. de.
Tipo: Folhetos
Palavras-chave: Defensivos; Inoculation; Lentil; Pea; Cerrado; Fertilidade do Solo; Ervilha; Inoculação; Lentilha; Legume; Leguminosa; Leguminosae; Lens Culinaris; Magnésio; Nodulação; Pisum Sativum; Semente; Tratamento; Magnesium; Inoculation methods; Nodulation; Seeds; Soil fertility.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546143

Nodulação em espécies leguminosas da região de Porto Trompetas, Oriximiná, Estado do Pará e seu potencial uso no reflorestamento de bacias de rejeito do lavado de bauxita.
Provedor de dados: 14
Autores: FARIA, S. M. de; LIMA, H. C. de; RIBEIRO, R. D.; CASTILHO, A. F.; HENRIQUES, J. C.
Tipo: Folhetos
Palavras-chave: Espécie leguminosa; Root nodulation; Soil reclamation; Reclamation; Soil deterioration; Deterioração do Solo; Leguminosae; Leguminosa; Nodulação; Reflorestamento; Recuperação do Solo; Reforestation; Nodulation; Soil degradation.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/628849

Inoculacao de leguminosas.
Provedor de dados: 14
Autores: MENDES, I. C.; VARGAS, M. A. T.; HUNGRIA, M.
Tipo: Folhetos
Palavras-chave: Defensivos; Inoculation; Lentil; Pea; Cerrado; Ervilha; Inoculação; Lentilha; Leguminosa; Leguminosae; Lens Culinaris; Nodulação; Pisum Sativum; Semente; Tratamento; Legumes; Inoculation methods; Nodulation; Seeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546144

Micorrizas vesicular-arbusculares em plantas forrageiras - Aspectos agronômicos e interações microbiológicas.
Provedor de dados: 14
Autores: SOUTO, S. M.; PAULA, M. A. de; FRANCO, A. A.
Importância e limitações das MVA.Infecção de forrageiras por fungos micorrizicos vesicular-arbusculares (FMVA). Seleção de MVA para forrageiras.Simbiose leguminosa + FMVA + Rhizobium. Efeito de agrotóxicos na simbiose FMVA+Rhizobium+ leguminosa.Efeito de FMVA na nodulação e FBN em leguminosas. Competição da tríplice simbiose por fotossintatos.
Tipo: Folhetos
Palavras-chave: Fixação biológica de nitrogênio; FBN; Biological nitrogen fixation; BNF; Agrotóxico; Infecção; Nodulação; Micorriza Vesicular Arbuscular; Planta Forrageira; Simbiose; Rhizobium; Infection; Pesticides; Nodulation; Pastures; Symbiosis; Vesicular arbuscular mycorrhizae.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/623721

Rhizobium fredii USDA191の過酸化水素耐性変異株の根粒形成及び窒素固定機能について
Provedor de dados: 19
Autores: 大和田, 琢二; 三浦, 賢紀; 南, 里栄; 白川, 雪香; 井川, 香子; 佐藤, 哲也; OHWADA, Takuji; MIURA, Takanori; MINAMI, Rie; SHIRAKAWA, Yukika; IGAWA, Keiko; SATO, Tetsuya.
Palavras-chave: 根粒菌; 過酸化水素（H2O2); トランスポゾン(Tn5); ペルオキシダーゼ; 根粒形成; Rhizobium; Hydrogen peroxide (H2O2); Transposon (Tn5); Peroxidase; Nodulation.
Ano: 1998
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1287

Growth and yield of common bean cultivars at two soil phosphorus levels under biological nitrogen fixation
Provedor de dados: 86
Autores: ARAÚJO,ADELSON PAULO; TEIXEIRA,MARCELO GRANDI; ALMEIDA,DEJAIR LOPES DE.
The genotypic differences on growth and yield of common bean (Phaseolus vulgaris L.) in response to P supply were evaluated in a field experiment under biological N2 fixation. Eight cultivars were grown at two levels of applied P (12 and 50 kg ha-1 of P -- P1 and P2 respectively), in randomized block design in factorial arrangement. Vegetative biomass was sampled at three ontogenetic stages. The effects of genotype and phosphorus were significant for most traits, but not the genotype ´ phosphorus interaction. The cultivars presented different patterns of biomass production and nutrient accumulation, particularly on root system. At P1, P accumulation persisted after the beginning of pod filling, and P translocation from roots to shoots was lower. The nodule...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genotype; Harvest index; Nodulation; Phaseolus vulgaris.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000400019

Lipoxygenase activities during development of root and nodule of soybean
Provedor de dados: 86
Autores: Junghans,Tatiana Góes; Oliveira,Maria Goreti de Almeida; Moreira,Maurilio Alves.
The objective of this work was to evaluate root and nodule soybean lipoxygenases in Doko cultivar and in a near isogenic line lacking seed lipoxygenases, inoculated and uninoculated with Bradyrhizobium elkanii. The lipoxygenase activities from roots collected at 3, 5, 9, 13, 18 and 28 days post-inoculation and from nodules collected at 13, 18 and 28 days post-inoculation were measured. The pH-activity profiles from root and nodules suggested that the lipoxygenases pool expressed in these organs from Doko cultivar and triple-null near isogenic lines are similar. The root lipoxygenase activity of Doko and triple-null lines, inoculated and uninoculated, reduced over time. The highest lipoxygenase activity observed at the beginning of root formation suggests...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Triple-null lines; Nodulation.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000700002

Biological nitrogen fixation in soybean under water restriction and exposed to 1-methylcyclopropene
Provedor de dados: 86
Autores: Nascimento Junior,Vitor Camargo do; Prete,Cássio Egidio Cavenaghi; Nogueira,Marco Antonio.
Abstract: The objective of this work was to assess the effects of 1-methylcyclopropene (1-MCP) on traits related with biological nitrogen fixation on 'BRS 268' soybean (Glycine max) subjected to water restriction. Plants were either exposed to drought between 32 (R2) and 47 (R3) days after sowing (DAS) or kept well-watered, in combination with exposure or not to 1-MCP. On the second day under drought (34 DAS), plants from both water conditions were exposed to 1-MCP in a hermetically sealed chamber for 15 hours. Control plants, dry or well-watered, that were not exposed to 1-MCP were kept in a separate chamber. At 36 (R2) and 47 (R3) DAS, shoot and root dry weights, leaf area index, number and dry weight of nodules, total ureides in sap, and N concentration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bradyrhizobium; Glycine max; Inhibitor of ethylene; Nodulation; Water stress.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000700818

Effect of water stress on nitrogen fixation and nodule structure of common bean
Provedor de dados: 86
Autores: Ramos,Maria Lucrecia Gerosa; Parsons,Richard; Sprent,Janet Irene; James,Euan Kelvin.
The aim of this work was to investigate the effect of water stress on N2 fixation and nodule structure of two common bean (Phaseolus vulgaris L.) cultivars Carioca and EMGOPA-201. Plants were harvested after five and eight days of water stress. Carioca had lower nodule dry weight on both water stress periods; shoot dry weight was lower at five days water stress and did not differ from control after eight days stress. Both cultivars had lower nitrogenase activity than control after five and eight days water stress. For both cultivars, after eight days stress bacteroid membranes were damaged. Carioca presented more pronounced damage to infected tissue, with host cell vacuolation and loss of the peribacteroid membrane at five days after stress; at eight days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Nitrogenase; Leaf water potential; Nodulation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000300002