Listar por autor "Yarzábal R., Luis A."
Mostrando ítems 1-7 de 7
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Characterization of the mineral phosphate-solubilizing activity of pantoea aglomerans MMB051 isolated from an Iron-Rich soil in southeastern Venezuela (Bolívar State)
Pérez P., Elizabeth M.; Sulbarán Mora, Miguel; Ball Vargas, María Mercedes; Yarzábal R., Luis A.; Bahsas B., Alí H. (Current Microbiology 2009 Apr;58(4):378-83, 2008-12-09)The mineral phosphate-solubilizing (MPS) activity of a Pantoea agglomerans strain, namely MMB051, isolated from an iron-rich, acidic soil near Ciudad Piar (Bolý´var State, Venezuela), was characterized on a chemically ... -
Cytochromes c of Acidithiobacillus ferrooxidans
Yarzábal R., Luis A.; Bonnefoy, Violaine; Brasseur, Gaël (FEMS Microbiol Lett. 2002 Apr 9;209(2):189-95, 2002-04)The chemolithoautotrophic Gram-negative bacterium Acidithiobacillus ferrooxidans is versatile and can grow on a number of electron donors and acceptors. In the A. ferrooxidans ATCC 23270 genome, computer analysis identified ... -
Información Investigador: Yarzábal Rodríguez, Luis Andrés
Yarzábal R., Luis A. (2008-09-19)Resumen Curricular: Obtuvo su Licenciatura en la Universidad Central de Venezuela en 1989. Culminó la Maestría en Biología Molecular (ULA) en 1995. En el año del 2003 obtuvo su Doctorado en Microbiología Molecular en la ... -
Isolation and characterization of mineral phosphate-solubilizing bacteria naturally colonizing a limonitic crust in the south-eastern Venezuelan region
Pérez P., Elizabeth M.; Sulbarán Mora, Miguel; Ball Vargas, María Mercedes; Yarzábal R., Luis A. (Soil Biology & Biochemistry 39 (2007) 2905–2914, 2007-11)With the aim to explore the possible role of mineral phosphate-solubilizing bacteria (PSB) in phosphorus (P) cycling in iron-rich, acidic soils, we conducted a survey of PSB naturally colonizing a limonitic crust in the ... -
Mercury resistance in bacterial strains isolated from tailing ponds in a gold mining area near El Callao (Bolívar State, Venezuela)
Ball Vargas, María Mercedes; Yarzábal R., Luis A.; Carrero M., Pablo E.; Castro, David (Current Microbiology 2007 Feb;54(2):149-54, 2007-02-01)Bacterial resistance to mercury (Hg) was investigated in strains isolated from Hg-contaminated tailing ponds located in the gold mining area of El Callao (Bolívar State, Venezuela). High frequencies of resistance were ... -
El plan de acción para la transformación de la educación superior en América Latina y el Caribe
Yarzábal R., Luis A. (SABER ULA, 2005-06-09) -
Regulation of the expression of the acidithiobacillus ferrooxidans rus operon encoding two cytochromes c, a cytochrome oxidase and rusticyanin
Yarzábal R., Luis A.; Appia Ayme, Corinne; Ratouchniak, Jeanine; Bonnefoy, Violaine (Microbiology 150 (2004), 2113-2123, 2004)The regulation of the expression of the rus operon, proposed to encode an electron transfer chain from the outer to the inner membrane in the obligate acidophilic chemolithoautroph Acidithiobacillus ferrooxidans, has been ...