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	Provedor de dados Ciencia e Investigación Agraria (1) Rev. Bras. Ciênc. Solo (1) Autor López,Liliana (2) Santamaría,Johanna (2) Castro,Lida (1) Moreno,Jessica L (1) Parrado,Carmen Alicia (1) Sánchez,Alexandra (1) Mais... Palavra-chave Colombian Andes (2) Antimicrobial resistance (1) Cattle farms (1) Ecological agriculture (1) Environmental pollution (1) Soil microbial indicators (1) Tetracycline (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Journal article (1) Ano 2018 (1) 2012 (1) País Brazil (1) Chile (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Soil Microbial Community Structure and Diversity in Cut Flower Cultures Under Conventional and Ecological Management Rev. Bras. Ciênc. Solo Santamaría,Johanna; Parrado,Carmen Alicia; López,Liliana. ABSTRACT Microorganisms are excellent soil quality indicators because their properties within the soil community change quickly in response to changes in the surrounding environment. The aim of this study was to determine if the structure and diversity of soil bacterial and fungal communities were useful for discriminating cut flower cultures under conventional (CM), ecological (EM), and intermediate (IM) management practices. Results obtained by PCR-DGGE revealed that bacteria had lower similarity in structure and higher diversity under EM than under CM. Sites under IM showed greater similarities in structure and diversity to the site under CM, although there were still significant differences between them. Fungal structure showed higher similarity among... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil microbial indicators; Ecological agriculture; Colombian Andes. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100401 Presence of tetracycline resistant bacteria and genes in grassland-based animal production systems Ciencia e Investigación Agraria López,Liliana; Santamaría,Johanna; Sánchez,Alexandra; Castro,Lida; Moreno,Jessica L. This study assessed the presence of tetracycline-resistant bacteria in five different grassland-based production systems dedicated to raising dairy cattle located in the Colombian Andes. Animal (ruminal fluid and feces) and environmental (soil and water) samples were evaluated, and resistant heterotrophic bacteria were found in rumen fluid, feces, soil, and runoff water samples. The resistant bacteria were isolated and identified based on the 16S rDNA region. Subsequently, they were evaluated for the presence of tet genes, which encode ribosomal protection proteins and membrane efflux pumps. The most frequent phyla detected were Firmicutes and Proteobacteria. The most common resistance genes found were tet(W), tet(Q), and tet(M). The nucleotide sequences... Tipo: Journal article Palavras-chave: Antimicrobial resistance; Cattle farms; Colombian Andes; Environmental pollution; Tetracycline. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300002 Registros recuperados: 2 Primeira ... 1 ... Última

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