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Moreira,Fátima M.S.; Lange,Anderson; Klauberg-Filho,Osmar; Siqueira,José O.; Nóbrega,Rafaela S.A.; Lima,Adriana S.. |
This work aimed to evaluate density of associative diazotrophic bacteria populations in soil and grass root samples from heavy metal contaminated sites, and to characterize isolates from these populations, both, phenotypically (Zinc, Cadmium and NaCl tolerance in vitro, and protein profiles) and genotypically (16S rDNA sequencing), as compared to type strains of known diazotrophic species. Densities were evaluated by using NFb, Fam and JNFb media, commonly used for enrichment cultures of diazotrophic bacteria. Bacterial densities found in soil and grass root samples from contaminated sites were similar to those reported for agricultural soils. Azospirillum spp. isolates from contaminated sites and type strains from non-contaminated sites varied... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Azospirillum; Zinc; Cadmium; Soil contaminants; Nitrogen-fixing bacteria. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000400014 |
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BALIEIRO, F. de C.; BERBARA, R.; FARIA, S. M. de; DE-POLLI, H.; FRANCO, A. A.. |
Entre as tecnologias usadas na agricultura, destaque deve ser dado ao uso dos insumos biológicos, expressão aqui utilizada para designar os materiais biológicos empregados para a obtenção de maior eficiência na exploração agrícola ou florestal, com reflexos positivos, tanto econômicos quanto ambientais. Os insumos biológicos compreendem organismos úteis e as variações de seus empregos, sendo o exemplo mais difundido o das bactérias fixadoras de nitrogênio atmosférico (BFN) denominadas bactérias diazotróficas. A inoculação dessas bactérias à soja transformou o País no segundo maior produtor mundial da oleaginosa, sem que para isso fosse necessária a aplicação do adubo nitrogenado, que é caro e danoso ao meio ambiente, quando usado sem uma boa recomendação. |
Tipo: Parte de livro |
Palavras-chave: Insumo; Fixação de Nitrogênio; Micorriza; Nitrogen-fixing bacteria. |
Ano: 2013 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/963368 |
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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 |
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