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| Registros recuperados: 31 | |
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| Oliveira,Dâmiany Pádua; Ferreira,Sindynara; Soares,Bruno Lima; Ferreira,Paulo Ademar Avelar; Morais,Augusto Ramalho de; Moreira,Fatima Maria de Souza; Andrade,Messias José Bastos de. |
| ABSTRACT Although the use of inoculants containing rhizobia is encouraged, there are no official recommendations for inoculation of snap bean. In this respect, the aim of this study was to evaluate the agronomic performance of Rhizobium strains in symbiosis with snap bean cultivars with different growth habits and crop cycles. The experiment was carried out in pots with soil in a greenhouse in the spring-summer season in Lavras, state of Minas Gerais, Brazil. A completely randomized experimental design was used, with 4 replications, in a 4 × 7 factorial arrangement involving four snap bean cultivars and seven treatments – five strains of Rhizobium (UFLA 02-100, UFLA 02-127, UFLA 04-173, CIAT 899, and PRF 81), plus two controls without inoculation (with and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological nitrogen fixation; Green bean cultivars; Phaseolus vulgaris; Rhizobium spp.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200292 |
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| Ferreira,Paulo Ademar Avelar; Pereira,João Paulo Andrade Rezende; Oliveira,Dâmiany Pádua; Vale,Helson Mário Martins do; Jesus,Ederson da Conceição; Soares,André Luís de Lima; Nogueira,Cláudia de Oliveira Gonçalves; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza. |
| ABSTRACT Studies in the Amazon indicate a wide diversity of rhizobia with the ability for biological nitrogen fixation (BNF), which could expand the number of strains approved for cowpea. Thus, the aim of this field study was to evaluate the agronomic performance in cowpea of the several strains isolated from the soils of the Brazilian states Acre and Rondônia, and to compare them withstrains approved by the Ministry of Agriculture (MAPA) and withnon-inoculated controls (without and with mineral nitrogen fertilizer). The inoculants performed well. Though less effective than the other strains, the UFLA 03-36 strain also was prominent with respect to grain yield. Because of the positive response of the UFLA 03-129 strain, which led to yield increases greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Biological nitrogen fixation; Amazon strains; Seed inoculation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100038 |
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| Toma,Maíra Akemi; Carvalho,Teotonio Soares de; Guimarães,Amanda Azarias; Costa,Elaine Martins da; Silva,Jacqueline Savana da; Moreira,Fatima Maria de Souza. |
| ABSTRACT Sophora tomentosa is a pantropical legume species with potential for recovery of areas degraded by salinization, and for stabilization of sand dunes. However, few studies on this species have been carried out, and none regarding its symbiotic relationship with beneficial soil microorganisms. Therefore, this study aimed to evaluate the diversity of nitrogen-fixing bacteria isolated from nodules of Sophora tomentosa, and to analyze the occurrence of colonization of arbuscular mycorrhizal fungi on the roots of this legume in seafront soil. Thus, seeds, root nodules, and soil from the rhizosphere of Sophora tomentosa were collected. From the soil samples, trap cultures with this species were established to extract spores and to evaluate arbuscular... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Legumes; Diversity of rhizobia; Degraded areas. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400680 |
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| Teixeira,Anita Fernanda dos Santos; Kemmelmeier,Karl; Marascalchi,Matheus Nicoletti; Stürmer,Sidney Luiz; Carneiro,Marco Aurélio Carbone; Moreira,Fatima Maria de Souza. |
| ABSTRACT Arbuscular mycorrhizal fungi (AMF) interact symbiotically with most plant species, facilitating revegetation of areas under rehabilitation. The aim of this study was to evaluate the inoculum potential, density, and diversity of AMF spores in five environments, as well as the relation of species with soil properties. Soil samples were collected in five environments in a mining area and its surroundings in the Quadrilátero Ferrífero, Minas Gerais (Brazil): tailings piles in rehabilitation with grass, canga, Cerrado, native forest, and eucalyptus plantation; these samples were subjected to chemical and physical analyses. Spores were directly extracted from field samples and from trap cultures (TCs) established in two locations in the Southeast and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tailings piles; Glomeromycota; Ironstone; Rehabilitation.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500511 |
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| Silva,Sérgio Henrique Godinho; Teixeira,Anita Fernanda dos Santos; Menezes,Michele Duarte de; Guilherme,Luiz Roberto Guimarães; Moreira,Fatima Maria de Souza; Curi,Nilton. |
| ABSTRACT Determination of soil properties helps in the correct management of soil fertility. The portable X-ray fluorescence spectrometer (pXRF) has been recently adopted to determine total chemical element contents in soils, allowing soil property inferences. However, these studies are still scarce in Brazil and other countries. The objectives of this work were to predict soil properties using pXRF data, comparing stepwise multiple linear regression (SMLR) and random forest (RF) methods, as well as mapping and validating soil properties. 120 soil samples were collected at three depths and submitted to laboratory analyses. pXRF was used in the samples and total element contents were determined. From pXRF data, SMLR and RF were used to predict soil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil analyses; Spatial prediction; Proximal sensor.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000600648 |
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| Oliveira,Dâmiany Pádua; Soares,Bruno Lima; Martins,Fábio Aurélio Dias; Franceschini,Leandro Alex; Cardillo,Bruno Ewerton da Silveira; Rufini,Márcia; Morais,Augusto Ramalho de; Moreira,Fatima Maria de Souza; Andrade,Messias José Bastos de. |
| Abstract: The objective of this work was to evaluate the viability of liquid medium inoculation of Rhizobium etli in the planting furrow and to certify the efficiency of its strain UFLA 02-100 as a potential inoculant for common bean (Phaseolus vulgaris). The treatments consisted of three application rates of liquid inoculant applied in the planting furrows or in common bean seed, besides two controls without inoculation. The inoculant contained 109 cells of Rhizobium etli mL-1. Regardless of the application method, the yield obtained with the inoculation was equivalent to that of N from urea; however, the application in the furrows, at 0.6 L ha-1, is more advantageous due to the operational practicality and reduced costs. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Biological N2 fixation; Biotechnology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300394 |
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| Ferreira,Paulo Ademar Avelar; Bomfeti,Cleide Aparecida; Silva Júnior,Romildo da; Soares,Bruno Lima; Soares,Cláudio Roberto Fonseca Sousa; Moreira,Fatima Maria de Souza. |
| O objetivo deste trabalho foi avaliar a tolerância de estirpes de Cupriavidus necator a zinco, cádmio, cobre e chumbo, além de determinar a eficiência simbiótica das estirpes mais tolerantes em associação a espécies leguminosas com potencial para revegetação. A tolerância foi testada em meio LB, suplementado com 2,5; 5,0; 7,5; 10; 12,5 e 15 mmol L-1 de ZnSO4.7H2O, CdSO4.8H2O, CuSO4.5H2O e PbCl2, respectivamente, em comparação ao controle sem adição de metal. Determinou-se a eficiência simbiótica das quatro estirpes de C. necator mais tolerantes aos metais avaliados (UFLA02-71, UFLA02-73, UFLA01-659 e UFLA01-663), as quais foram inoculadas nas espécies: Leucaena leucocephala, Enterolobium contortisiliquum, Acacia mangium, Mimosa caesalpiniifolia, M. pudica,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Áreas degradadas; Β-proteobactéria; Fixação biológica de nitrogênio; Metais pesados; Revegetação. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000100012 |
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| Rufini,Márcia; Oliveira,Dâmiany de Pádua; Trochmann,André; Soares,Bruno Lima; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza. |
| O objetivo deste trabalho foi avaliar a eficiência simbiótica de estirpes de bactérias fixadoras de nitrogênio do gênero Bradyrhizobium com guandu-anão. Os experimentos foram conduzidos em vasos de Leonard, em vasos com solo e em campo. Foram testadas 11 estirpes em vasos de Leonard, e as que apresentaram maior eficiência em promover o crescimento do guandu-anão foram avaliadas em vasos com solo (Latossolo Vermelho-Amarelo e Cambissolo) e em campo (Latossolo Vermelho-Amarelo). Em todos os experimentos, os tratamentos foram comparados a dois controles positivos (estirpes aprovadas como inoculantes para as cultivares de guandu-anão BR 2003 e BR 2801) e a duas testemunhas sem inoculação, uma com alta concentração de N mineral, e a outra, a depender do... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cajanus cajan; Fixação biológica de nitrogênio; Inoculante. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000300197 |
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| Marques,Teresa Cristina Lara Lanza de Sá e Melo; Moreira,Fatima Maria de Souza; Siqueira,José Oswaldo. |
| O objetivo do trabalho foi avaliar o teor de metais pesados e o crescimento de mudas de 20 espécies arbóreas tropicais em solo com elevado grau de contaminação com metais pesados. Em casa de vegetação, as mudas foram transplantadas para vasos contendo 3,3 kg de misturas com diferentes proporções (0, 20, 40 e 60% v/v) de solo contaminado. Verificou-se comportamento diferenciado das espécies quanto à inibição de crescimento e aos teores de metais na raiz e na parte aérea em decorrência da contaminação. Com base na produção de matéria seca da parte aérea, concluiu-se que apenas Myrsine umbellata, Cedrella fissilis, Tabebuia impetiginosa e Copaifera langsdorffii não foram afetadas pela contaminação, enquanto Hymenaea courbaril, Mimosa caesalpiniaefolia, Acacia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poluição do solo; Árvores tropicais; Revegetação; Reabilitação do solo. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000100015 |
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| Costa,Elaine Martins da; Nóbrega,Rafaela Simão Abrahão; Carvalho,Fernanda de; Trochmann,André; Ferreira,Linnajara de Vasconcelos Martins; Moreira,Fatima Maria de Souza. |
| O objetivo deste trabalho foi avaliar o potencial de promoção do crescimento vegetal e a diversidade genética de bactérias isoladas de nódulos de feijão-caupi cultivado em solos do Cerrado piauiense. Avaliaram-se 26 estirpes quanto à capacidade de fixar nitrogênio em vida livre, solubilizar fosfatos inorgânicos, produzir ácido-3-indolacético (AIA) na ausência e na presença do aminoácido triptofano (100 mg L-1), produzir nódulos e promover o crescimento de feijão-caupi em vasos Leonard. Nenhuma estirpe fixou nitrogênio em vida livre, e 69% foram capazes de solubilizar fosfato de cálcio in vitro. Na presença de triptofano, todas as estirpes foram capazes de sintetizar o AIA em meio 79, e 80% sintetizaram o AIA em meio DYGS. Apenas quatro estirpes nodularam o... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ácido-3-indolacético; Fixação biológica de nitrogênio; Solubilização de fosfatos. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000900012 |
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| Rufini,Márcia; Ferreira,Paulo Ademar Avelar; Soares,Bruno Lima; Oliveira,Dâmiany Pádua; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza. |
| O objetivo deste trabalho foi avaliar o efeito do pH do meio de cultivo na eficiência simbiótica de estirpes de Rhizobium, em solo com e sem calagem. Foram realizados experimentos em casa de vegetação, com e sem calagem, e no campo, apenas com calagem. O delineamento experimental utilizado foi de blocos ao acaso com quatro repetições, e os tratamentos foram cinco estirpes de Rhizobium (UFLA 02-100, UFLA 02-68, UFLA 04-195, UFLA 04-202 e CIAT 899), cultivadas em meio de cultura 79 com diferentes valores de pH (5,0, 6,0 e 6,9), e testemunhas sem inoculação, com ou sem nitrogênio mineral. Foram avaliados número e massa de matéria seca de nódulos, massa de matéria seca da parte aérea, eficiência relativa, teor e acúmulo de nitrogênio na parte aérea e nos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Rhizobium; Acidez; Fixação biológica de nitrogênio; Inoculante. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000100011 |
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| Diniz,Patricia Fabian de Araújo; Oliveira,Luiz Edson Mota de; Lopes,Noelly Alves; Florentino,Ligiane Aparecida; Carvalho,Teotonio Soares de; Moreira,Fatima Maria de Souza. |
| Diversos relatos evidenciam os benefícios de procariotos fixadores de nitrogênio atmosférico no crescimento e na nutrição de muitas espécies vegetais; entretanto, não há, até o momento, nenhum trabalho visando à prospecção desses microrganismos na rizosfera da seringueira (Hevea brasiliensis). Assim, os objetivos deste trabalho foram verificar a ocorrência de bactérias diazotróficas em solos sob plantio de seringueira, assim como em suas raízes, e isolar e caracterizar essas bactérias. Para essa finalidade, coletaram-se amostras de solo e de raízes finas de seringueiras cultivadas no Campus Experimental da Universidade Federal de Lavras (Lavras, MG) para inoculação em meios de cultura semissólidos sem N na forma combinada, de modo a favorecer o crescimento... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea; Diazotróficos; Fixação biológica de nitrogênio; Beijerinckia. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500006 |
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| Soares,Bruno Lima; Ferreira,Paulo Ademar Avelar; Rufini,Márcia; Martins,Fábio Aurélio Dias; Oliveira,Dâmiany Pádua; Reis,Ricardo Pereira; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza. |
| ABSTRACT Management of biological nitrogen fixation in common bean still requires improvement. The objective of this study was to verify the compatibility of nitrogen fertilization with biological N2 fixation to increase common bean yield and profitability. Four field experiments were performed in four municipalities of Minas Gerais, Brazil, during the 2009 and 2010 winter crop season. The 2009 crop experiments were set up under a no-till system and the 2010 crop was conducted using conventional tillage. A randomized block experimental design was used with four replications and seven treatments combining application rates of mineral N (at sowing and/or topdressing) and seed inoculation with Rhizobium tropici strain CIAT899. Inoculation with 20 kg ha-1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Nitrogen fixation; No-till; Conventional tillage. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100416 |
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| Bomfeti,Cleide Aparecida; Florentino,Ligiane Aparecida; Guimarães,Ana Paula; Cardoso,Patrícia Gomes; Guerreiro,Mário César; Moreira,Fatima Maria de Souza. |
| The process of biological nitrogen fixation (BNF), performed by symbiotic nitrogen fixing bacteria with legume species, commonly known as α and β rhizobia, provides high sustainability for the ecosystems. Its management as a biotechnology is well succeeded for improving crop yields. A remarkable example of this success is the inoculation of Brazilian soybeans with Bradyrhizobium strains. Rhizobia produce a wide diversity of chemical structures of exopolysaccharides (EPS). Although the role of EPS is relatively well studied in the process of BNF, their economic and environmental potential is not yet explored. These EPS are mostly species-specific heteropolysaccharides, which can vary according to the composition of sugars, their linkages in a single... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exopolysaccharides; Nodules; Environmental stress; Soil aggregation; Rhizobia. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300001 |
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| Navarrete,Acácio Aparecido; Taketani,Rodrigo Gouvêa; Mendes,Lucas William; Cannavan,Fabiana de Souza; Moreira,Fatima Maria de Souza; Tsai,Siu Mui. |
| The study of the ecology of soil microbial communities at relevant spatial scales is primordial in the wide Amazon region due to the current land use changes. In this study, the diversity of the Archaea domain (community structure) and ammonia-oxidizing Archaea (richness and community composition) were investigated using molecular biology-based techniques in different land-use systems in western Amazonia, Brazil. Soil samples were collected in two periods with high precipitation (March 2008 and January 2009) from Inceptisols under primary tropical rainforest, secondary forest (5-20 year old), agricultural systems of indigenous people and cattle pasture. Denaturing gradient gel electrophoresis of polymerase chain reaction-amplified DNA (PCR-DGGE) using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil microbial ecology; Soil microbiology; Microbial diversity; Land use changes; Tropical soils. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500007 |
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| Rufini,Márcia; Oliveira,Dâmiany Pádua; Trochmann,André; Soares,Bruno Lima; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza. |
| ABSTRACT: Optimization of symbiosis between nitrogen-fixing bacteria and legumes has been extensively studied, seeking agricultural sustainability. To evaluate the symbiotic efficiency of nitrogen-fixing bacterial strains belonging to the Bradyrhizobium genus with pigeon pea (Cajanus cajan (L.) Millsp.) cv. Fava-Larga, experiments were conducted in Leonard jars (axenic conditions), pots with soil, and in the field. Ten strains were tested in Leonard jars, and three strains, in addition to BR 29, were selected according to their ability to promote the growth of pigeon pea, for further tests in pots with different soil types (Inceptsol and Oxisol) and in the field (Oxisol). Treatments were compared with strains BR 2003 and BR 2801 (approved as inoculants for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cajanus cajan; Inoculant; Biological nitrogen fixation; Selection. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100432 |
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| Castro,Jordana Luísa de; Souza,Mariana Gonçalves; Rufini,Márcia; Guimarães,Amanda Azarias; Rodrigues,Tainara Louzada; Moreira,Fatima Maria de Souza. |
| ABSTRACT Mining is an important economic activity. However, its impact on environment must be accessed, mainly on relevant processes for their sustainability. The objective of this study was to evaluate the diversity and efficiency of symbiotic nitrogen fixing bacterial communities in soils under different types of vegetation in the Quadrilátero Ferrífero: ironstone outcrops, Atlantic Forest, neotropical savanna, and a rehabilitated area revegetated with grass. Suspensions of soil samples collected under each type of vegetation were made in a saline solution to capture rhizobia communities that were then inoculated on cowpea [Vigna unguiculata (L.) Walp.], which was used as a trap plant. The symbiotic efficiency of the communities was evaluated in a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological indicators; Biological N2 fixation; Ironstone outcrops. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100421 |
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| Registros recuperados: 31 | |
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