Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 98
Primeira ... 12345 ... Última
Imagem não selecionada

Imprime registro no formato completo
A microbiological and biogeochemical investigation of the cold seep tubeworm Escarpia southwardae (Annelida: Siboglinidae): Symbiosis and trace element composition of the tube ArchiMer
Duperron, Sebastien; Gaudron, Sylvie M.; Lemaitre, Nolwenn; Bayon, Germain.
Tubeworms within the annelid family Siboglinidae rely on sulfur-oxidizing autotrophic bacterial symbionts for their nutrition, and are among the dominant metazoans occurring at deep-sea hydrocarbon seeps. Contrary to their relatives from hydrothermal vents, sulfide uptake for symbionts occurs within the anoxic subsurface sediment, in the posterior ‘root’ region of the animal. This study reports on an integrated microbiological and geochemical investigation of the cold seep tubeworm Escarpia southwardae collected at the Regab pockmark (Gulf of Guinea). Our aim was to further constrain the links between the animal and its symbiotic bacteria, and their environment. We show that E. southwardae harbors abundant sulfur-oxidizing bacterial symbionts in its...
Tipo: Text Palavras-chave: Sulfur-oxidizing bacteria; RTCA; Trace elements; RubisCO; Symbiosis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00191/30251/28683.pdf
Imagem não selecionada

Imprime registro no formato completo
A preliminary review of zoanthid-hermit crab symbioses (Cnidaria; Zoantharia/Crustacea, Paguridea) Naturalis
Ates, R.M.L..
A preliminary review is presented of zoanthid-hermit crab symbioses reported in the literature. The records of Balss (1924) are included. Aspects of this type of symbiosis are discussed.
Tipo: Article / Letter to the editor Palavras-chave: Hermit crabs; Paguridea; Colonial anemones; Zoantharia; Symbiosis; Review; 42.74.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/220292
Imagem não selecionada

Imprime registro no formato completo
A simple, economical and reproducible protein extraction protocol for proteomics studies of soybean roots. Repositório Alice
RODRIGUES, E. P.; TORRES, A. R.; BATISTA, J. S. da S. B.; HUERGO, L.; HUNGRIA, M..
2012
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Protein extraction; 2-DE; Soja; Raiz; Simbiose; Soybeans; Roots; Proteomics; Symbiosis.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/926653
Imagem não selecionada

Imprime registro no formato completo
A simple, economical and reproducible protein extraction protocol for proteomics studies of soybean roots Genet. Mol. Biol.
Rodrigues,Elisete Pains; Torres,Adalgisa Ribeiro; Batista,Jesiane Stefânia da Silva; Huergo,Luciano; Hungria,Mariangela.
Sample preparation is a critical step in two-dimensional gel electrophoresis (2-DE) of plant tissues. Here we describe a phenol/SDS procedure that, although greatly simplified, produced well-resolved and reproducible 2-DE profiles of protein extracts from soybean [Glycine max (L.) Merril] roots. Extractions were made in three replicates using both the original and simplified procedure. To evaluate the quality of the extracted proteins, ten spots were randomly selected and identified by mass spectrometry (MS). The 2-DE gels were equally well resolved, with no streaks or smears, and no significant differences were observed in protein yield, reproducibility, resolution or number of spots. Mass spectra of the ten selected spots were compared with database...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2-DE; Protein extraction; Proteomics; Soybean roots; Symbiosis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000200016
Imagem não selecionada

Imprime registro no formato completo
A study of chlorophyll-like and phycobilin pigments in the C endosymbiont of the apple- snail Pomacea canaliculata Biocell
Vega,Israel A.; Dellagnola,Federico A.; Hurst,Jorge A.; Godoy,Martín S.; Castro-Vazquez,Alfredo.
Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were investigated. Acetone extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of chlorophylls. Three fractions obtained from silica gel column chromatography of the acetone extracts (C I, C II and C III), were studied by positive ion fast atom bombardment-mass spectrometry (FAB-MS) and hydrogen-nuclear magnetic resonance (H-NMR). Results indicated the presence of (1) a sterol in the yellow colored C I fraction; (2) a mixture of pheophorbides a and b in the major green fraction, C II; and (3) a modified pheophorbide a in the smaller green fraction, C III. Aqueous extracts of the C endosymbiont did not show evidence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Symbiosis; Cyanobacteria; Chloroplast; Photosynthetic pigments; Phylogeny.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452012000200001
Imagem não selecionada

Imprime registro no formato completo
Acquisition of epibiotic bacteria along the life cycle of the hydrothermal shrimp Rimicaris exoculata ArchiMer
Guri, Mathieu; Durand, Lucile; Cueff-gauchard, Valerie; Zbinden, Magali; Crassous, Philippe; Shillito, Bruce; Cambon-bonavita, Marie-anne.
The caridean shrimp Rimicaris exoculata dominates the fauna at several Mid-Atlantic Ridge hydrothermal vent sites. This shrimp has an enlarged gill chamber, harboring a dense ectosymbiotic community of chemoautotrophic bacteria associated with mineral oxide deposits. Until now, their acquisition is not fully understood. At three hydrothermal vent sites, we analyzed the epibionts diversity at different moult stages and also in the first stages of the shrimp life (eggs, hatched eggs (with larvae) and juveniles). Hatched eggs associated with young larvae were collected for the first time directly from gravid females at the Logachev vent site during the Serpentine cruise. An approach using 16S rRNA clone libraries, scanning and transmission electron...
Tipo: Text Palavras-chave: Symbiosis; Larvae; Methanotrophic symbiont; Rimicaris exoculata; Transmission pathways.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00072/18318/15997.pdf
Imagem não selecionada

Imprime registro no formato completo
Adaptations of lichens to conditions in tropical forests of South-East Asia and their taxonomic implications Naturalis
Wolseley, P.A.; Hawksworth, D.L..
Lichens are fungi with a specialized nutritional mode involving algae, or cyanobacteria, or both. Classification is based on the fungal partner, and around 13 500 species are known. The association is ancient, and the first ascomycete fungi with fruit bodies may have been lichenized. Adaptations to tropical habitats include extensive utilization of trentepohlioid algae, the production of large multi-celled spores capable of forming numerous germ tubes, and water-repellant hydophobins coating internal cell walls. Many tropical groups lack modern monographs and numerous new species are discovered in detailed studies. Lichens merit more attention in the tropics as bioindicators of habitat disturbance.
Tipo: Article / Letter to the editor Palavras-chave: Algae; Ascomycota; Bioindication; Coevolution; Symbiosis.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/525176
Imagem não selecionada

Imprime registro no formato completo
Agronomic efficiency of Bradyrhizobium in peanut under different environments in Brazilian Northeast. Repositório Alice
SIZENANDO, C. I. T.; RAMOS, J. P. C.; FERNANDES JUNIOR, P. I.; LIMA, L. M. de; FREIRE, R. M. M.; SANTOS, R. C. dos.
Several legumes have natural ability to associate with nitrogen - fixing bacteria known as rhizobia. The efficiency of this association depends on the plant and bacterial genotype and the edaphoclimatic conditions. Peanut is a tropical legume able to associate with a wide range of rhizobia and the selection of efficient bacteria is important to increase the nitrogen fixation in this crop. In order to investigate the agronomic efficiency of two Bradyrhizobiumstrains, two peanut genotypes were used in field trails carried out in three environments located at Brazilian Northeast. The genotypes (BR1 and L7 Bege) were submitted to rhizobial inoculation (SEMIA 6144 or ESA 123, both Bradyrhizobium strains, and chemical nitrogen fertilization in randomized block...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bradyrhizobium; Fixação biológica de nitrogênio; Inoculante; Fertilização; Simbiose; Rizóbios; Amendoim; Bacteria; Leguminosa; Biological nitrogen fixation; Inoculant; Symbiosis; Peanut.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1052954
Imagem não selecionada

Imprime registro no formato completo
Agronomical performance of common bean inoculated with new rhizobial isolates. Repositório Alice
FERREIRA, E.; MOREIRA, L.; WENDLAND, A..
This work aimed to evaluate the agronomic efficiency of rhizobia isolates under field conditions in two sites: Guapó and Santo Antônio de Goiás, by comparison of their results with the commercial strains SEMIA 4077, 4080 and SEMIA SEMIA 4088 of Rhizobium tropici.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Feijão; Phaseolus vulgaris; Fixação de nitrogênio; Simbiose; Nitrogen fixation; Symbiosis.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1024853
Imagem não selecionada

Imprime registro no formato completo
Approche métagénomique de la chimiosynthèse en système hydrothermal océanique profond : cas particulier des symbioses bactériennes associées à la crevette Rimicaris exoculata ArchiMer
Jan, Cyrielle.
The hydrothermal shrimp Rimicaris exoculata is an endemic species of the Mid-Atlantic Ridge (MAR).This species lives in dense aggregates on the walls of active chimneys and dominates the megafauna of most of these sites. This shrimp has two distinct microbial communities whose roles remain almost unknown. One of these communities is associated with the cephalothorax and hypertrophied mouthparts.These are covered by a dense community of bacteria affiliated to chemoautotrophic epibionts associated with mineral deposits. To deepen our knowledge on the symbiotic community in the context of the thesis, a metagenomic approach was undertaken. This helped highlighting the microbial diversity present with a dominant phylum, the Proteobacteria. Two classes are...
Tipo: Text Palavras-chave: Epibiontes; Métagénomique; Rimicaris exoculata; Symbiose; Zetaproteobacteria; Symbiosis; Epibionts; Metagenomic.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00498/60954/64357.pdf
Imagem não selecionada

Imprime registro no formato completo
Arbuscular mycorrhiza in species of Commelinidae (Liliopsida) in the state of Pernambuco (Brazil) Acta Botanica
Silva,Gladstone Alves da; Santos,Bartolomeu Acioli dos; Alves,Marccus Vinícius; Maia,Leonor Costa.
Mycorrhiza are a mutualistic symbiosis between fungi and plant roots, the main benefit to the plant being increased nutrient uptake. The arbuscular is the most important kind of mycorrhiza for agriculture and it is widespread in occurrence and distribution in most ecosystems. The aim of this work was to study the mycorrhizal status of the species of Commelinidae that occur in the State of Pernambuco. Plant roots, collected in ten municipalities, were washed, cleared in KOH, stained with Trypan blue in lactoglycerol and observed under a light microscope in order to assess presence and identification of the mycorrhizal type. Percentage of root colonization was evaluated by the gridline intersect method. Forty specimens representing 30 species were observed....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cyperaceae; Eriocaulaceae; Poaceae; Mycorrhizal fungi; Symbiosis.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062001000200002
Imagem não selecionada

Imprime registro no formato completo
Arbuscular mycorrhizal fungi diversity in revegetated areas after bauxite mining. Repositório Alice
BORGES, W. L.; NOVAIS, C. B.; SAGGIN JUNIOR, O. J.; PRIN, Y.; LE ROUX, C.; DUCOUSSO, M.; FARIA, S. M. de.
Arbuscular mycorrhizal fungi (AMF) are obligatory biotrophs that have a symbiotic evolutionary relationship with about 80% of all terrestrial plant species. The fungus mainly supplies water and nutrients to the plant and receives photoassimilates. The AMF diversity affects both the competition among species and floristic composition of an area. Fluctuations in the population of this group of microorganisms can cause fluctuations in plant populations above ground. In this work, the AMF community profile in areas with different ages of revegetation was evaluated by morphological identification of spores and denaturing gradient gel electrophoresis (DGGE) techniques. We found 12 AMF species and dominance of the species Glomus macrocarpum determined by spore...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fungo; Mineração; Morfologia; DGGE; Symbiosis.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/994850
Imagem não selecionada

Imprime registro no formato completo
Association between deep-water scale-worms (Annelida: Polynoidae) and black corals (Cnidaria: Antipatharia) in the Southwestern Atlantic Rev. Bras. Zool.
De Assis,José Eriberto; Souza,José Roberto B. de; Lima,Manuela M. de; Lima,Gislaine V. de; Cordeiro,Ralf T.S.; Pérez,Carlos D..
ABSTRACT Polynoid scale-worms have been found living as commensals with deep-water antipatharians (commonly known as black corals) in the Potiguar Basin, off Rio Grande do Norte State, Northeastern Brazil. In this paper two polychaete species and four black corals species are redescribed. Benhamipolynoe cf. antipathicola and Parahololepidella cf. greeffi, and the black coral Stylopathes adinocrada Opresko, 2006 are recorded for the Southwestern Atlantic. Benhamipolynoe cf. antipathicola was first described from off New Zealand and the Malay Archipelago, as symbiont with the black coral Stylopathes tenuispina (Silberfeld, 1909). It was later reported for the North Atlantic, off Florida, associated with Stylopathes columnaris (Duchassaing, 1870). In our...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Hexacorallia; Polynoids; South America; Symbiosis.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100315
Imagem não selecionada

Imprime registro no formato completo
Avaliacao de cultivares de soja quanto a fixacao biologica do nitrogenio. Repositório Alice
BOHRER, T. R. J.; HUNGRIA, M..
Este trabalho objetivou detectar cultivares de soja (Glycine max L. Merril) com maior capacidade de nodulacao e fixacao biologica do N2(FBN) e cultivares que restringem a nodulacao com as estirpes de Bradyrhizobium estabelecidas nos solos brasileiros. A avaliacao foi feita com 152 cultivares, infectadas sob condicoes ambientais controladas, axenicas e na ausencia de N mineral, com uma das tres estirpes de Bradyrhizobium elkanii: SEMIA 5019 (=29w), SEMIA 587 e SEMIA 566. Das cultivares analisadas, nenhuma restringiu a nodulacao, embora houvesse uma diferenca de ate quatro vezes no numero e massa de nodulos por planta. A media geral de nitrogenio acumulado na parte aerea das cultivares infectadas foi de 50,24 mg N/planta. As cultivares que apresentaram maior...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bradyrhizobium; Inoculacao; Glycine max; Nodulacao; Simbiose; Inoculation; Nodulation; Symbiosis.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/86435
Imagem não selecionada

Imprime registro no formato completo
Benefícios da adubação verde sobre a simbiose micorrízica e a produtividade de batata-doce. Infoteca-e
ESPÍNDOLA, J. A. A.; ALMEIDA, D. L. de; GUERRA, J. G. M..
Plantio das leguminosas e da batata doce. Produtividade da batata doce e simbiose micorrízica.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Batata doce; Adubação verde; Simbiose; Micorriza; Produção; Ipomoea batata; Plantio; Leguminosa; Sweet potatoes; Green manures; Symbiosis; Mycorrhiza; Mycorrhizae; Production; Legume.
Ano: 1997 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/623563
Imagem não selecionada

Imprime registro no formato completo
"Beta-rizóbios": os novos simbiontes encontrados em espécies de Mimosa. Infoteca-e
REIS JÚNIOR, F. B. dos; FARIA, S. M. de; MENDES, I. de C.; SIMON, M. F.; LOUREIRO, M. de F.; ELLIOT, G. N.; YOUNG, P.; SPRENT, J. I.; JAMES, E. K..
The fixation and transformation of atmospheric dinitrogen into ammonia and hence into organic e compounds is a crucial part of the nitrogen cycle. Nitrogenase, the enzyme responsible, has a wide taxonomie distribution in the bacteria and archaea, but is confined to a limited number of species. Among these, rhizobia, whieh form nodules on the roots of legumes, are recognised as the main contributors of biologieally-fixed nitrogen. Until recently, it has been generally accepted that legumes are nodulated exelusively by members of the alfa-proteobaeteria belonging to a number of related genera in the family Rhizobiaceae. In this document we review some results from recent studies that presents the newly-discovered beta-rhizobia which challenge the accepted...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Rhizobium; Fixação de nitrogênio; Leguminosa forrageira; Simbiose; Nitrogen fixation; Feed legumes; Symbiosis.
Ano: 2006 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/570271
Imagem não selecionada

Imprime registro no formato completo
Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.)Merr.) crop under different doses of inoculant Acta Agron. (Palmira)
Pedrozo,Alessandro; Girelli de Oliveira,Nelson João; Alberton,Odair.
Abstract Soybean is one of the most important crops in the world and presents great versatility. This study aims to investigate the effect of the Bradyrhizobium japonicum inoculant at 0, 600 and 1200 mL ha1 on soybean crop, with and without 1 L ha-1 calcium (Ca 41%) + 0.4 L ha-1 boron (B 14%). Plants were grown for 90 days in plastic pots with 3 kg of sand and vermiculite (v/v) autoclaved at 121oC for 1 h. The experiment was conducted in a completely randomized design with five replications in a greenhouse. Soybean yield parameters were evaluated, such as, dry weight of shoot, root and total; plant height, nitrogen in the shoot; number and dry weight of nodules; chlorophyll index in the leaves; number of pods per plant (NPPL); number of grains per pod...
Tipo: Journal article Palavras-chave: Bradyrhizobium; Inoculation; Plant-soil relations; Rhizosphere; Soil microbiology; Symbiosis.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000200297
Imagem não selecionada

Imprime registro no formato completo
Biological nitrogen fixation in tropical dry forests with different legume diversity and abundance. Repositório Alice
SILVA, A. F. da; FREITAS, A. D. S. de; COSTA, T. L.; FERNANDES JUNIOR, P. I.; MARTINS, L. M. V.; SANTOS, C. E. de R. e S.; MENEZES, K. A. S.; SAMPAIO, E. V. de S. B..
Tropical dry forests have high diversity and plant abundance of potentially biologically nitrogen fixing (BNF) legume species, attributed to the ecological advantage of fixation. However, there are few estimates of N quantities annually fixed, hindering the understanding of factors that control BNF, like low phosphorus availability. The quantities of N fixed in three dry forest (caatinga) fragments of the semiarid Brazilian northeastern region with different legume plant proportions were determined and seedlings of Mimosa tenuiflora were grown with phosphorous fertilized soil from the fragments to verify if lack of fixation was due to the absence of rhizobia populations or P deficiency. The vegetation of all areas was dominated by legume plants, mainly...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Floresta; Fixação biológica de nitrogênio; Semiárido; Biomassa foliar; Floresta tropical; Rhizobium; Natural abundance; Leaf biomass; Symbiosis.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1069272
Imagem não selecionada

Imprime registro no formato completo
Bukholderia strains promote Mimosa spp. growth but not Macroptilium atropurpureum Rev. Ciênc. Agron.
Araújo,Kaliane Sírio; Carvalho,Fernanda de; Moreira,Fatima Maria de Souza.
ABSTRACT The aim of this study was to evaluate the relationship and symbiotic efficiency of 14 strains of Burkholderia isolated from rupestrian grasslands, using M. atropurpureum and Mimosa tenuiflora as trap plants, with the species M. atropurpureum, Mimosa bimucronata and M. foliolosa. For the nodulation and symbiotic efficiency test in M. atropurpureum, long-neck bottles containing nutrient solution were used. The experiments with Mimosa spp. were carried out in tubes containing vermiculite (160 cm3) and sand (80 cm3) (2:1). The parameters under evaluation were number of nodules, nodules dry matter production, shoots dry matter, roots dry matter, and total dry matter production for all the species analyzed; and plant height, diameter, and the Dickson...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rupestrian grasslands; Nitrogen-fixing bacteria; Symbiosis; Mimosa bimucronata; Mimosa foliolosa.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000100041
Imagem não selecionada

Imprime registro no formato completo
Casuarina equisetifolia fitorremeciación de suelo contaminado con diesel y aplicación de bioestimulación y bioaumentación. Colegio de Postgraduados
Díaz Martínez, María Esther.
En este trabajo se evaluó la germinación de semillas y el crecimiento de plantas de C. equisetifolia L. ante diesel, y su potencial de fitorremediación en combinación de bioaumentación y bioestimulación. La primera fase experimental evaluó el efecto tóxico de 15 dosis de diesel (0, 100, 250, 500, 800, 1000, 1500, 2000, 2500, 3000, 5000, 7500, 10000, 15000 y 20000 mg kg-1) en la germinación de semillas y la emergencia de plántulas. A los 10 días, la germinación fue mayor en concentraciones altas de diesel; la mayor geminación ocurrió en 20000 mg kg-1, y la menor se registró ante 5000 mg kg-1. La emergencia de plántulas fue mayor en las concentraciones menores a 5000 mg kg-1. A los 15 días, el crecimiento de las plántulas disminuyó ante concentraciones...
Palavras-chave: Germinación; Emergencia de plantas; Simbiosis; Fertilización; Microorganismos; Degradación de hidrocarburos; Seed germination; Seedling emergence; Symbiosis; Fertilization; Microorganisms; Hydrocarbon degradation; Maestría; Edafología.
Ano: 2012 URL: http://hdl.handle.net/10521/730
Registros recuperados: 98
Primeira ... 12345 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional