Consulta: subjectFacets:"Pseudomonas putida"
Registros recuperados: 12
Data/hora: 09/06/2024 13:30:08

Rizobacterias y hongos micorrizógenos arbusculares como alternativa biotecnológica para mejorar el vigor y sanidad de portainjertos de cítricos.
Provedor de dados: 32
Autores: Chiquito Contreras, Roberto Gregorio.
El aprovechamiento de agentes biológicos como rizobacterias y hongos micorrizógenos arbusculares constituye una alternativa viable para disminuir el uso de agroquímicos en la producción agrícola. Se evaluó el potencial de rizobacterias y hongos micorrizógenos arbusculares como promotores del crecimiento y agentes de control biológico en plantas de cítricos. En la primera etapa de tres, se realizaron pruebas de reacción bioquímica, las cuales permitieron la identificación de las cepas FCA-56 y FCA-60 como Pseudomonas putida, FCA-8 como Pseudomonas fluorescens y en el caso de las cepas FCA-9, FCA-10, FCA-35 y FCA-52 se confirmó el género Pseudomonas. Además, se determinó la capacidad antagónica in vitro de las siete cepas rizobacterianas sobre el crecimiento...
Palavras-chave: Pseudomonas putida; Phytophthora parasitica; Antagonismo; ADNr16S; Colonizacion micorrízica; Antagonism; 16S rDNA; Mycorrhizal colonization; Agroecosistemas Tropicales; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/545

Rizobacterias y hongos micorrizógenos arbusculares como alternativa biotecnológica para mejorar el vigor y sanidad de portainjertos de cítricos.
Provedor de dados: 32
Autores: Chiquito Contreras, Roberto Gregorio.
El aprovechamiento de agentes biológicos como rizobacterias y hongos micorrizógenos arbusculares constituye una alternativa viable para disminuir el uso de agroquímicos en la producción agrícola. Se evaluó el potencial de rizobacterias y hongos micorrizógenos arbusculares como promotores del crecimiento y agentes de control biológico en plantas de cítricos. En la primera etapa de tres, se realizaron pruebas de reacción bioquímica, las cuales permitieron la identificación de las cepas FCA-56 y FCA-60 como Pseudomonas putida, FCA-8 como Pseudomonas fluorescens y en el caso de las cepas FCA-9, FCA-10, FCA-35 y FCA-52 se confirmó el género Pseudomonas. Además, se determinó la capacidad antagónica in vitro de las siete cepas rizobacterianas sobre el crecimiento...
Palavras-chave: Pseudomonas putida; Phytophthora parasitica; Antagonismo; ADNr16S; Colonizacion micorrízica; Antagonism; 16S rDNA; Mycorrhizal colonization; Agroecosistemas Tropicales; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/545

Bioconversion of mixed free fatty acids to poly-3-hydroxyalkanoates by Pseudomonas putida BET001 and modeling of its fermentation in shake flasks
Provedor de dados: 69
Autores: Makhdum Munawar,Khalil Munawar; Simarani,Khanom; Annuar,Mohamad Suffian Mohamad.
Background: The paper reports on the utilization of palm kernel oil (PKO) as a low cost renewable substrate for medium-chain-length poly-3-hydroxyalkanoates (mcl-PHA) production by Pseudomonas putida BET001. Investigation on the effects of selected key variables on growth, mixed free fatty acids consumption and mcl-PHA production by the bacterial culture in the shaken flask system were carried out along with its kinetic modeling. Results: The biomass production, fatty acids consumption and mcl-PHA production were found favorable when the strain was cultured in mineral medium at pH 6-7,28°C, aeration surface-to-volume ratio of 0.4 x 10(6) m-1, 250 rpm agitation rate for 48 h. Mcl-PHA production by this strain showed mixed growth and non-growth associated...
Tipo: Journal article
Palavras-chave: Biopolymer; Fermentation; Medium-chain-length PHA; Palm kernel oil; Pseudomonas putida.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100008

Biodegradation kinetics of o-cresol by Pseudomonas putida DSM 548 (pJP4) and o-cresol removal in a batch-recirculation bioreactor system
Provedor de dados: 69
Autores: Kaymaz,Yasin; Babaoglu,Anil; Pazarlioglu,Nurdan Kasikara.
The biodegradation kinetics of o-cresol was examined by acclimatized P. putida DSM 548 (pJP4) in batch experiments at varying initial o-cresol concentrations (from 50 to 500 mg/L). The kinetic parameters of o-cresol aerobic biodegradation were estimated by using the Haldane substrate inhibition equation. The biodegradation kinetics of o-cresol was investigated. In batch culture reactors, the Maximum specific growth rate (&amp;#956;max), Monod constant (Ks) and the inhibition constant (Ki) were established as 0.519 h-1, 223.84 mg/L and 130.883 mg/L, respectively. o-cresol biodegradation in a batch-recirculation bioreactor system by immobilized P. putida was also studied. The recycled packed bed reactor system, which was composed of Ca-alginate beads and...
Tipo: Journal article
Palavras-chave: Biodegradation; Cell immobilization; O-cresol; Pseudomonas putida; Substrate inhibition kinetics.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000100003

Avaliação da segurança da introdução de Pseudomonas putida no ambiente: testes ecotoxicológicos da Fase 1 e perspectivas de implementação de novos estudos.
Provedor de dados: 14
Autores: JONSSON, C. M.; CASTRO, V. L. S. S. de; SILVA, C. M. M.; MAIA, A. de H. N.
Resumo: Os procedimentos de avaliação de risco necessários para a liberação de agentes microbianos em campo são executados de acordo com protocolos em fases sequenciais nas quais estão incluídos os estudos em organismos não-alvo. A bactéria Pseudomonas putida - linhagem AF7- (P. putida AF7) tem demonstrado potencial de aplicação no meio ambiente, tanto como biorremediador, como no controle de pragas. No presente estudo foram avaliados alguns efeitos desta bactéria em roedores (ratos Wistar) e organismos aquáticos (Daphnia similis) que constam da Fase inicial dos protocolos. Também foi avaliada a atividade enzimática microbiana em três tipos de solo após a sua inoculação com o agente biológico. Os ratos não demonstraram sintomas de patogenicidade, apesar do...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Teste ecotoxicológico; Ratos Wistar.; Bactéria; Pseudomonas putida; Controle biológico; Toxidez; Roedor; Biological control; Toxicity testing; Toxicity; Daphnia.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/907631

Biocontrole da mancha-angular do feijoeiro por antagonistas bacterianos
Provedor de dados: 86
Autores: Garcia,Flávio Augusto de Oliveira; Romeiro,Reginaldo da Silva.
O objetivo deste trabalho foi avaliar o efeito de isolados de Bacillus cereus e Pseudomonas putida sobre a severidade da mancha-angular do feijoeiro, em condições de campo. Quatro experimentos foram conduzidos em épocas favoráveis à mancha-angular (Pseudocercospora griseola), com as cultivares Pérola e Ouro Negro. Os experimentos foram realizados em delineamento de blocos ao acaso, com seis repetições. Os tratamentos foram pulverizações sobre as plantas com três estirpes de B. cereus (UFV-172, UFV-101 e UFV-75) e duas estirpes de P. putida (UFV-53 e UFV-Pp), acibenzolar-S-metil, fungicida clorotalonil e controle pulverizado com água, no total de oito tratamentos. Os tratamentos foram aplicados por atomização no filoplano de plantas de feijoeiro,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus cereus; Phaseolus vulgaris; Pseudocercospora griseola; Pseudomonas putida.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001200004

Grain filling and fatty acid composition of safflower fertilized with integrated nitrogen fertilizer and biofertilizers
Provedor de dados: 86
Autores: Sharifi,Raouf Seyed; Namvar,Ali; Sharifi,Reza Seyed.
Abstract: The objective of this work was to evaluate the effects of the integrated application of nitrogen fertilizer and biofertilizers on the yield, grain filling period, and composition of fatty acids of safflower (Carthamus tinctorius). Split-plot experiments were carried out during the 2011 and 2012 crop seasons. The treatments consisted of seed inoculation with plant growth-promoting rhizobacteria (Azotobacter chroococcum strain 5, Azospirillum lipoferum strain F, and Pseudomonas putida strain 186) in the subplots, including a control without seed inoculation; and of the application of N fertilizer at different rates (60, 120, and 180 kg ha-1 urea) in the main plots, including a control without N. The highest grain yield, grain filling period, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carthamus tinctorius; Pseudomonas putida; Oil quality; PGPR; Fatty acids; Seed-inoculation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000400236

ACTIVIDAD ANTAGÓNICA FRENTE A Pyricularia grisea (Sacc.) Y FITOESTIMULACIÓN EN EL CULTIVO DEL ARROZ DE CEPAS AUTÓCTONAS DE Pseudomonas putida (Trev.)
Provedor de dados: 100
Autores: Rives,Narovis; Acebo,Yanelis; Almaguer,M; García,J.C; Hernández,Annia.
La aplicación de inoculantes de origen bacteriano en cultivos de importancia económica, constituye una alternativa ecológica que permite la obtención de mayores rendimientos y la conservación del medio ambiente. La obtención y caracterización de cepas autóctonas, potencialmente eficientes en la promoción del crecimiento vegetal y el control biológico de patógenos constituye un paso esencial para el desarrollo de inoculantes microbianos. Esta investigación se desarrolló con el objetivo de caracterizar cepas de Pseudomonas putida previamente aisladas del cultivo del arroz variedad J-104 en cuanto a su actividad promotora del crecimiento vegetal y su efecto antagónico frente a Pyricularia grisea. Se realizaron experimentos in vitro para detectar la producción...
Tipo: Journal article
Palavras-chave: Arroz; Pseudomonas putida; Pyricularia grisea; Promoción del crecimiento; Actividad antagónica.
Ano: 2009
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522009000200006

Aislamiento y caracterización de rizobacterias asociadas a cultivos de arroz (Oryza sativa L.) del Norte de Santander (Colombia)
Provedor de dados: 115
Autores: Florez-Márquez,Jessica D.; Leal-Medina,Gloria I.; Ardila-Leal,Leidy D.; Cárdenas-Caro,Diana M.
Resumen Las rizobacterias promotoras de crecimiento vegetal son reconocidas y estudiadas por sus efectos benéficos en varios cultivos. Cepas de los géneros Azotobacter y Pseudomonas se aislaron de suelo rizosférico de cultivos de arroz (Oryza sativa L.) de 10 fincas en el distrito de riego del río Zulia, Norte de Santander, Colombia. El aislamiento bacteriano se hizo a partir de gránulos de suelo y diluciones seriadas de suelo, sembradas en agar Ashby para Azotobacter y King B para Pseudomonas fluorescentes, respectivamente. Cuarenta y dos aislamientos se conservaron en viales con solución salina estéril (0.85 % NaCl) en refrigeración a 4 °C y se ingresaron al Banco de Cepas del Laboratorio de Investigaciones en Biología Aplicada de la Universidad...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azotobacter; Pseudomonas putida; Solubilización de fosfatos; Fijación biológica de nitrógeno; Ácido indolacético; Sideróforos.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400373

Effect of culture medium on biocalcification by Pseudomonas Putida, Lysinibacillus Sphaericus and Bacillus Subtilis
Provedor de dados: 58
Autores: Shirakawa,Márcia Aiko; Cincotto,Maria Alba; Atencio,Daniel; Gaylarde,Christine C.; John,Vanderley M.
The objective of this study is to investigate the efficiency of calcium carbonate bioprecipitation by Lysinibacillus sphaericus, Bacillus subtilis and Pseudomonas putida, obtained from the Coleção de Culturas do Instituto Nacional de Controle de Qualidade em Saúde (INCQS), as a first step in determining their potential to protect building materials against water uptake. Two culture media were studied: modified B4 containing calcium acetate and 295 with calcium chloride. Calcium consumption in the two media after incubation with and without the bacterial inoculum was determined by atomic absorption analysis. Modified B4 gave the best results and in this medium Pseudomonas putida INQCS 113 produced the highest calcium carbonate precipitation, followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas putida; Lysinibacillus sphaericus; Bacillus subtilis; Calcium carbonate; Biocalcification.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200014

Further characterization of o-nitrobenzaldehyde degrading bacterium Pseudomonas sp: ONBA-17 and deduction on its metabolic pathway
Provedor de dados: 58
Autores: Yu,Fang-Bo; Li,Xiao-Dan; Ali,Shinawar Waseem; Shan,Sheng-Dao; Luo,Lin-Ping; Guan,Li-Bo.
A previously reported o-nitrobenzaldehyde (ONBA) degrading bacterium Pseudomonas sp. ONBA-17 was further identified and characterized. Based on results of DNA base composition and DNA-DNA hybridization, the strain was identified as P. putida. Its degradation effect enhanced with increase of inoculum amount and no lag phase was observed. Higher removal rate was achieved under shaking conditions. All tested ONBA with different initial concentrations could be completely degraded within 5 d. In addition, degradative enzyme(s) involved was confirmed as intra-cellular distributed and constitutively expressed. Effects of different compounds on relative activity of degradative enzyme(s) within cell-free extract were also evaluated. Finally, 2-nitrobenzoic acid and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas putida; Biodegradation; Metabolic pathway; Nitroaromatics.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400021

Benzene, toluene and xylene biodegradation by Pseudomonas putida CCMI 852
Provedor de dados: 58
Autores: Otenio,Marcelo Henrique; Silva,Maria Teresa Lopes da; Marques,Maria Luiza Oliveira; Roseiro,José Carlos; Bidoia,Ederio Dino.
A minimal liquid medium containing benzene (B), toluene (T) and xylene (X) and mixtures thereof, was used to evaluate degradation activity of Pseudomonas putida CCMI 852 containing a TOL plasmid. Experiments were developed with B, T and X (100 mg L-1), with mixtures of BT, BX, and TX (50 + 50 mg L-1 each) and BTX (33.3 + 33.3 + 33.3 mg L-1 each), added to 500 mL of medium. After 18 to 24 hours, the inoculum was added and solvent disappearance was determined after 24 to 25 hours by GC. Results showed that P. putida CCMI 852 was able to metabolize T and X, but B was not metabolized. In a BTX mixture, B was not metabolized and T and X degradation rate decreased 50%.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas putida; Biodegradation; BTX; Plasmid TOL.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300010