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| Registros recuperados: 48 | |
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| Tejera,B; Heydrich,Mayra; Rojas,Marcia M. |
| El arroz es uno de los alimentos con mayor demanda en el mercado actual debido al gran número de personas que lo consumen. Una alternativa para dar solución a la aparición de enfermedades de origen fúngico es la utilización de bacterias como control biológico de hongos fitopatógenos. Dentro de estos microorganismos, los aislamientos del género Bacillus han sido uno de los más empleados en el control biológico, debido a que estos tienen la capacidad de producir una amplia diversidad de metabolitos con actividad antifúngica. En el presente trabajo se utilizaron siete aislados pertenecientes al género Bacillus para evaluar el efecto antagónico ejercido por estos microorganismos sobre dos hongos fitopatógenos del cultivo del arroz Curvularia sp. (Boed.) y... |
| Tipo: Journal article |
Palavras-chave: Bacillus; Curvularia sp.; Pyricularia grisea. |
| Ano: 2012 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522012000200008 |
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| Guidoli,Marcos Gabriel; Mendoza,Jorge Arnaldo; Falcón,Sofia Lizardo; Boehringer,Silvia Irene; Sánchez,Sebastián; Macías,María Elena Fátima Nader. |
| ABSTRACT: Probiotics are a novel alternative to antibiotics as growth factors. Previously, our group isolated, selected and tested in vivo, eight autochthonous strains. They showed no significant effects when administered individually. However, the best doses, stages and ways of administration were combined in a multi strain formula. The aim of this research was to evaluate the effect of this probiotic product on the growth and survival of Piaractus mesopotamicus larvae. The administration was implemented during egg incubation and endogenous feeding period (5), during larvae exogenous feeding period (10) and all along the experiment (15). A group without microorganisms was used as control. The probiotic generates significant increments of mean weight and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactic acid bacteria; Bacillus; Pacú; Larviculture. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700652 |
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| Traldi,Ana Beatriz; Oliveira,Maria Cristina de; Duarte,Karina Ferreira; Moraes,Vera Maria Barbosa de. |
| Três experimentos foram conduzidos com o objetivo de avaliar o efeito da utilização de probióticos na dieta de frangos de corte sobre as características da cama reutilizada e das lesões de peito, joelho e coxim plantar. Foram utilizados em cada experimento 800 pintos machos de um dia, da linhagem comercial Ross, alojados em 20 boxes, em densidade populacional de 10 aves/m². O delineamento foi inteiramente casualizado e os tratamentos distribuídos em esquema fatorial 2 × 2 (cama nova ou reutilizada x rações com ou sem probiótico). O probiótico utilizado nas dietas foi composto por Bacillus subtilis e B. coagulans (2x10(9) e 1x10(7) ufc, respectivamente). Aos 42 dias de idade, quatro aves de cada boxe foram abatidas para análise das lesões de peito, joelho e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus; Qualidade da cama de frango; PH; Potencial de volatilização de amônia. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000300020 |
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| Costa,Antonio Carlos Augusto da; Duta,Flavia Pereira. |
| This work presents some results on the use of microbes from the genus Bacillus for uptake of cadmium, zinc, copper and lead ions. Maximum copper bioaccumulations were 5.6 mol/g biomass for B. sphaericus, 5.9 mol/g biomass for B. cereus and B. subtilis, and 6.4 mol/g biomass for Bacillus sp. Maximum zinc bioaccumulations were 4.3 mol/g biomass for B. sphaericus, 4.6 mol/g biomass for B. cereus, 4.8 mol/g biomass for Bacillus sp. and 5.0 mol/g biomass for B. subtilis. Maximum cadmium bioaccumulations were 8.0 mol/g biomass for B. cereus, 9.5 mol/g biomass for B. subtilis, 10.8 mol/g biomass for Bacillus sp. and 11.8 mol/g biomass for B. sphaericus. Maximum lead biomaccumulations were 0.7 mol/g biomass for B. sphaericus, 1.1 mol/g biomass for B. cereus, 1.4... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioaccumulation; Bacillus; Heavy metals. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100001 |
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| Shiomi,Humberto Franco; Silva,Harllen Sandro Alves; Melo,Itamar Soares de; Nunes,Flávia Vieira; Bettiol,Wagner. |
| Suppression of plant diseases due to the action of endophytic microorganisms has been demonstrated in several pathosystems. Experiments under controlled conditions involving endophytic bacteria isolated from leaves and branches of Coffea arabica L and Coffea robusta L were conducted with the objective of evaluating the inhibition of germination of Hemileia vastatrix Berk. & Br., race II, urediniospores and the control of coffee leaf rust development in tests with leaf discs, detached leaves, and on potted seedling of cv. Mundo Novo. The endophytic bacterial isolates tested proved to be effective in inhibiting urediniospore germination and/or rust development, with values above 50%, although the results obtained in urediniospore germination tests... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hemileia vastatrix; Coffea spp.; Bacillus; Biocontrol. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000100006 |
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| Khanna,Purnima; Goyal,Dinesh; Khanna,Sunil. |
| Pyrene, a high molecular weight polycyclic aromatic hydrocarbon (PAH), is a priority pollutant present in soil contaminated with crude oil, coal-tar and complex PAHs. Bacterial consortium CON-3 developed from crude oil contaminated soil of Patiala, Punjab (India) cometabolized 50 µg ml-1 pyrene in the presence of glucose (0.5 %; w/v) at 30 °C, as determined by reverse-phase high performance liquid chromatography (HPLC). Bacillus sp. PK-12, Bacillus sp. PK-13 and Bacillus sp. PK-14 from CON-3, identified by 16S rRNA gene sequence analysis, were able to cometabolize 64 %, 55 % and 53 % of pyrene in 35 days, respectively. With the increase in glucose concentration to 1.0 % (w/v) in growth medium isolates PK-12, PK-13 and PK-14 showed 19 - 46 % uptake of 50 µg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pyrene; Bacillus; Crude oil contaminated soil; High performance liquid chromatography (HPLC). |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200024 |
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| Willemse-collinet, M.f.; Carsin, J.l.; Brodard, E.; L'Emeillat, Y.. |
| Evolution of marine oil pollution made the study of microbial degradation a current matter of importance. The present work dealt with preliminary assays in vitro of a systematic study of petroleum degrading Bacillus species. Degradation of petrol during the different experimentations was followed with infrared analyses. Progressive elimination of alcanes and isoalcanes was controlled by gas- chromatography. Out of the 37 strains of Bacillus subtilis, B_. polymyxa, B. megaterium and Sporosar- cina tested, 10 could grow with petrol as unique source of carbon. The factors of growth as supplemented in these experiments hardly accelerated the degradation. |
| Tipo: Text |
Palavras-chave: Pétrole; Biodégradation; Bacillus. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/00306/41750/40961.pdf |
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| Mojica-Marín,V; Luna-Olvera,HA; Sandoval-Coronado,CF; Pereyra-Alférez,B; Morales-Ramos,LH; González-Aguilar,NA; Hernández-Luna,CE; Alvarado-Gomez,OG. |
| La expansión de la marchitez del chile en nuevas plantaciones y diferentes zonas productoras de México, y la dificultad en el control de la misma, obligan a desarrollar nuevas medidas de control. Se espera que las mismas auspicien mejores expectativas para el control de la enfermedad en el contexto de una estrategia de manejo integrado. El presente estudio se realizó con el objetivo de evaluar y determinar la capacidad antagónica de 64 cepas de Bacillus thuringiensis sobre Rhizoctonia solani, Phytophthora capsici y Fusarium oxysporum mediante estudios de cultivos duales en placas Petri. Las cepas de Bacillus thuringiensis provinieron de la Colección Internacional de Bacilos Entomopatógenos de la FCB-UANL. Fueron 16 cepas de B. thuringiensis que redujeron... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus; Control biológico; Antagonismo; Germinación; Fitopatógenos con origen en el suelo. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572009000200004 |
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| Oliva-Ortiz,Luz del C.; Velázquez-Alcaraz,Teresa de J.; Sosa-Pérez,Rogelio; Partida-Ruvalcaba,Leopoldo; Díaz-Valdés,Tomás; Arciniega-Ramos,Julio; López-Orona,Carlos A.. |
| Resumen La fusariosis vascular del garbanzo (Cicer arietinum L.) aumenta debido a la dificultad para controlarla. El control químico disminuye la biodiversidad y contamina el ambiente, por lo cual se deben desarrollar medidas sustentables para limitar la enfermedad. Por lo tanto, el objetivo de este estudio fue determinar el potencial de cepas bacterianas y fúngicas, nativas de Sinaloa, como agentes biocontrol de esta enfermedad en plantas de garbanzo cultivadas en invernadero. La hipótesis fue que las cepas bacterianas y fúngicas nativas son una alternativa para controlar de la fusariosis vascular del garbanzo porque inhiben Fusarium oxysporum f. sp. ciceris. La inhibición de las cepas de control biológico se evaluó sobre el crecimiento radial de Fusarium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control biológico; Cepas nativas; Bacillus; Trichoderma; Pseudomonas; Fusarium oxysporum f. sp. ciceris. |
| Ano: 2017 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600683 |
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| Ayala Torres, Ana María. |
| Un total de 129 aislamientos bacterianos obtenidos de la micósfera de esclerocios de Claviceps gigantea se evaluaron in vitro para determinar su capacidad de inhibir el crecimiento de Fusarium graminearum, F. subglutinans y F. verticillioides patógenos a maíz. Ensayos cualitativos en confrontación dual, resultaron en la selección de 22 aislamientos bacterianos con el mayor potencial antagónico hacia una, dos o las tres especies de Fusarium. Los aislamientos se identificaron molecularmente mediante secuenciación parcial del gen 16s ADNr. Las cepas con mayor grado de antagonismo pertenecen a los géneros Bacillus y Pseudomonas. La caracterización en la producción de metabolitos potencialmente involucrados en la actividad antagónica, mostró que el 100% de las... |
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Palavras-chave: Bacillus; Pseudomonas; Biocontrol; Metabolitos secundarios; Caracterización; Secondary metabolites; Characterization; Fitopatología; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2299 |
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| Mantecón,Jorge D. |
| Soybean {Glycine max) is currently the most widely grown and rapidly expanding crop in Argentina, and brown spot caused by Septoria glycines is a major foliage disease that affects this crop. Triáis in the 2005 and 2006 growing seasons were undertaken using soybean (Glycine max) cv. Nidera A4800 RR. A randomized complete block design was used with four replicates. Two biological fungicides, based on Bacillus subtilis or B. pumilus, and four conventional fungicides, pyraclostrobin in combination with epoxiconazole (Opera 25 SC, BASF Argentina), azoxystrobin (Amistar 25 SC, Syngenta Argentina), trifloxystrobin in combination with cyproconazole (Sphere 267,5 EC, Bayer, Argentina), and tebuconazole (Folicur 25 EC, Bayer, Argentina), were evaluated. Fungicides... |
| Tipo: Journal article |
Palavras-chave: Bacillus; Chemical and biological control; Brown spot; Diseases; Fungicides; Soybean. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000200011 |
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| López,Sofía; Zea,Sven; Gómez-León,Javier. |
| RESUMEN La formación de biopelículas es un proceso importante para las comunidades bacterianas marinas debido a que este mecanismo favorece la adaptación a variaciones en las condiciones ambientales. El objetivo de este estudio fue evaluar la formación de biopelículas de las bacterias aisladas de sedimentos marinos en condiciones in vitro. Para esto se realizaron ensayos de cuantificación de biopelículas usando dos métodos, cristal violeta y reducción del colorante XTT; además se evaluó la viabilidad de las bacterias mediante la tinción Live/Dead. Posteriormente las cepas evaluadas fueron identificadas usando el marcador 16S ARN. Los resultados mostraron que los aislados pertenecen al género Bacillus todos en diferentes rangos fueron capaces de formar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterias marinas; Bacillus; Biopelículas; Sedimentos. |
| Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612019000200071 |
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| Anisha,Anvar Hussain Noorul; Anandham,Rangasamy; Kwon,Soon Woo; Gandhi,Pandiyan Indira; Gopal,Nellaiappan Olaganathan. |
| Abstract Adhirasam is a cereal based, doughnut shaped, deep fried dessert consumed in the southern regions of India. The dough used to prepare adhirasam is fermented and contains rice flour and jaggery. The aim of the present study was to characterize the cultivable bacteria associated with this fermented dough and to identify a suitable starter culture for the production of quality adhirasam. In total, one hundred and seventy bacterial isolates were recovered from de Man Rogosa Sharp (MRS) agar, nutrient agar, lysogeny agar and tryptic soy agar media. Out of the 170 bacterial isolates, sixteen isolates were selected based on their ability to tolerate glucose and sucrose. All the bacterial isolates tolerated 15% glucose and 30% sucrose. Analyses of 16S... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adhirasam; Fermented cereal product; Bacillus; South Indian dessert. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401183 |
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| Swetlana,Nagal; Jain,P. C.. |
| Feather waste is generated in large amounts as a by-product of commercial poultry processing. This residue is almost pure keratin, which is not easily degradable by common proteolytic enzymes. Eight strains of Bacillus, isolated from decomposing feathers were tested for the hydrolysis of feather wastes in the laboratory. Among these strains, Bacillus cereus KB043 was the best feather degrading organism when grown on basal medium containing 1% hen feather as sole source of carbon and nitrogen. It caused 78.16 ± 0.4 % degradation with a significant release of soluble protein (1206.15 ± 14.7 µg mL-1) and cysteine (20.63 ± 0.4 µg mL-1) in the cultivation fluid. The strain also showed the highest level of keratinase activity (39.10 ± 0.4 U mL-1). These data... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus; Feather degradation; Poultry waste; Soluble protein; Keratinase. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100028 |
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| Registros recuperados: 48 | |
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