Symbiotic Nitrogen Fixation
Mostrando 1-12 de 200 artigos, teses e dissertações.
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1. New Native Rhizobia Strains for Inoculation of Common Bean in the Brazilian Savanna
ABSTRACT Maximization of biological nitrogen fixation in the common bean (Phaseolus vulgaris L.) crop depends on the genetic characteristics related to the plant, the symbiotic efficiency of rhizobia, and environmental factors. The objective of this study was to evaluate the performance of rhizobia selected beforehand from Cerrado (Brazilian tropical savanna
Rev. Bras. Ciênc. Solo. Publicado em: 09/03/2017
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2. Genome sequence of Bradyrhizobium embrapense strain CNPSo 2833T, isolated from a root nodule of Desmodium heterocarpon
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 i
Braz. J. Microbiol.. Publicado em: 2017-03
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3. Symbiotic effectiveness of Bradyrhizobium ingae in promoting growth of Inga edulis Mart. seedlings
ABSTRACT Inga edulis Mart. is a leguminous tree adapted to acidic and low-fertility soils that establishes symbioses with nitrogen (N)-fixing bacteria. The identification of effective bacteria in biological N fixation may bolster the use of I. edulis in degraded or modified areas and agroforestry systems. Therefore, the aims of this study were evaluation of
Rev. Bras. Ciênc. Solo. Publicado em: 06/02/2017
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4. Draft genome sequence of Bradyrhizobium sp. strain BR 3267, an elite strain recommended for cowpea inoculation in Brazil
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 gen
Braz. J. Microbiol.. Publicado em: 2016-12
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5. Plant densities and modulation of symbiotic nitrogen fixation in soybean
Soybean nitrogen (N) demands can be supplied to a large extent via biological nitrogen fixation, but the mechanisms of source/sink regulating photosynthesis/nitrogen fixation in high yielding cultivars and current crop management arrangements need to be investigated. We investigated the modulation of symbiotic nitrogen fixation in soybean [Glycine max (L.) M
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-06
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6. Symbiotic nitrogen-fixing bacterial populations trapped from soils under agroforestry systems in the Western Amazon
Cowpea (Vigna unguiculata) is an important grain-producing legume that can forego nitrogen fertilization by establishing an efficient symbiosis with nitrogen-fixing bacteria. Although inoculating strains have already been selected for this species, little is known about the genotypic and symbiotic diversity of native rhizobia. Recently, Bradyrhizobium has be
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-12
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7. Interrelação bactérias (MHB) e FMA : estratégia para estimular a eficiência simbiótica e micorrização de sabiá. / Bacteria (MHB) and FMA interrelation : a strategy to stimulate the symbiotic efficiency and mycorrhizal of sabiá.
A utilização de plantas associadas simbioticamente, com bactérias fixadoras de N2 e fungos micorrízicos arbusculares (FMA), constitui uma estratégia eficiente para acelerar a recuperação de áreas impactadas além de reduzir consideravelmente os custos com a mesma. O conceito de mycorrhiza helper bacteria (MHB) tem sido introduzido e discutido devido
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/03/2012
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8. Multilocus sequence analysis (MLSA) of Bradyrhizobium strains: revealing high diversity of tropical diazotrophic symbiotic bacteria
Symbiotic association of several genera of bacteria collectively called as rhizobia and plants belonging to the family Leguminosae (=Fabaceae) results in the process of biological nitrogen fixation, playing a key role in global N cycling, and also bringing relevant contributions to the agriculture. Bradyrhizobium is considered as the ancestral of all nitroge
Brazilian Journal of Microbiology. Publicado em: 2012-06
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9. Physiological and symbiotic diversity of Cupriavidus necator strains isolated from nodules of Leguminosae species
Biological nitrogen fixation, performed by diazotrophic bacteria, plays an important role in the maintenance of agricultural systems, as it contributes with significant amounts of the nitrogen (N) needed for plant growth, totally or partially exempting the use of industrial N fertilisers. Twenty-five bacterial strains isolated from nodules of Leucaena leucoc
Sci. agric. (Piracicaba, Braz.). Publicado em: 2012
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10. Tolerância de Cupriavidus necator a cádmio e zinco e sua eficiência simbiótica em leguminosas / The Cupriavidus necator tolerance to cadmium and zinc and its symbiotic efficiency in legumes
A contaminação por metais pesados como cádmio, cobre, chumbo e zinco no solo, provenientes de atividades de mineração, causa sérias consequências ambientais e impactos à saúde pública devido a sua toxicidade e capacidade de acumulação. Assim, a recuperação de áreas degradadas pela atividade de mineração deve ser eficaz e realizada visando ac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/08/2011
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11. Taxa de inóculo na habilidade competitiva de rizóbios e eficiência na fixação do N2 em feijão-caupi ( Vigna unguiculata (L.) Walp,). / Inoculum rate in competitiveness and effective ability for nitrogen fixation of rhizobia on Cowpea (Vigna unguiculata (L.) Walp.).
O feijão - caupi (Vigna unguiculata (L.) Walp.) é cultivado, no Brasil, nas mais diferentes condições edafoclimáticas. Devido a sua boa adaptabilidade às condições tropicais e por ser uma cultura de alto valor sócio-econômico, tem um papel importante para a capitalização de pequenos agricultores na região Nordeste. Por ser uma leguminosa, o feij
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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12. Density and diversity of diazotrophic bacteria isolated from Amazonian soils using N-free semi-solid media
Non-symbiotic diazotrophic bacteria are amongst the most important functional groups of soil-dwelling microorganisms. These bacteria contribute to plant growth predominantly through biological N2 fixation. Here, we evaluated the density and diversity of non-symbiotic diazotrophic bacteria in soils taken from diverse land use systems (LUS) in Amazonia using n
Scientia Agricola. Publicado em: 2011-10