|
|
|
| Registros recuperados: 11 | |
|
|
| Franzon,J.H.; Santos,D.S.. |
| The histone-like protein H1 (H-NS) is an abundant structural component of the bacterial nucleoid and influences many cellular processes including recombination, transcription and transposition. Mutations in the hns gene encoding H-NS are highly pleiotropic, affecting the expression of many unrelated genes. We have studied the role of H-NS on the regulation of hemolysin gene expression in Serratia marcescens. The Escherichia coli hns mutant carrying S. marcescens hemolysin genes on a plasmid constructed by ligation of the 3.2-kb HindIII-SacI fragment of pR02 into pBluescriptIIKS, showed a high level of expression of this hemolytic factor. To determine the osmoregulation of wild-type and hns defective mutants the cells were grown to mid-logarithmic phase in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hemolysin expression; H-NS; Global regulation; Serratia marcescens. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001200001 |
| |
|
|
| Díaz Sánchez,Adrian A.; Corzo López,Mylene; Báez Arias,Michel; Espinosa Castaño,Ivette; Prieto Abreu,Marlene; Fiallo Madruga,Roberto C.; Pérez Hernández,María del Carmen; Martínez Zubiaur,Yamila. |
| Los aislados bacterianos SUR - 6, DiP/2012 y Oct/Y se obtuvieron a partir de gusanos de seda (Bombyx mori L.) infectados naturalmente, los cuales presentaban síntomas evidentes de flacheria bacteriana. El presente trabajo tuvo como objetivo identificar los patógenos bacterianos asociados a estos síntomas observados en las crías de gusano de seda en zonas de Cuba, para establecer medidas de control y saneamiento. Los estudios morfológico, bioquímico y fisiológico de los aislados permitieron identificarlos como Enterobacter cloacae (SUR - 6), Serratia marcescens (DiP/2012) y Acinetobacter baumanii (Oct/Y), los cuales, en la literatura, son informados ampliamente como patógenos de insectos. |
| Tipo: Journal article |
Palavras-chave: Bombyx mori L.; Flacheria; Septicemia bacteriana; Serratia marcescens; Enterobacter cloacae; Acinetobacter baumanii. |
| Ano: 2014 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522014000300010 |
| |
|
|
| Carbonell,G.V.; Amorim,C.R.N.; Furumura,M.T.; Darini,A.L.C.; Fonseca,B.A.L.; Yano,T.. |
| Serratia marcescens cytotoxin was purified to homogeneity by ion-exchange chromatography on a DEAE Sepharose Fast Flow column, followed by gel filtration chromatography on a Sephadex G100 column. The molecular mass of the cytotoxin was estimated to be about 50 kDa. Some biological properties of the cytotoxin were analyzed and compared with well-characterized toxins, such as VT1, VT2 and CNF from Escherichia coli and hemolysin produced by S. marcescens. The sensitivity of the cell lines CHO, HeLa, HEp-2, Vero, BHK-21, MA 104 and J774 to the cytotoxin was determined by the cell viability assay using neutral red. CHO and HEp-2 were highly sensitive, with massive cellular death after 1 h of treatment, followed by BHK-21, HeLa, Vero and J774 cells, while MA 104... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cell culture; Biological activity; Serratia marcescens; Cytotoxin; Virulence factors. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000300010 |
| |
|
|
| Li,Bin; Yu,Rongrong; Liu,Baoping; Tang,Qiaomei; Zhang,Guoqing; Wang,Yanli; Xie,Guanlin; Sun,Guochang. |
| Representative strains of Serratia marcescens from an edible cactus plant and silkworms were characterized and a comparison based on their cellular fatty acid composition, 16S rRNA and groE gene sequence analysis as well as silkworm virulence and chitosan susceptibility was carried out. Results from this study indicate that there are no significant differences between the phenotypic and molecular characterization, virulence and chitosan susceptibility of the S. marcescens strains from the cactus plant and silkworms. Silkworms inoculated with S. marcescens from either plant or silkworm resulted in nearly 100% mortality. Chitosan solution exhibited strong antibacterial activity against S. marcescens. This activity increased with the increase of chitosan... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Serratia marcescens; Cactus; Silkworm; Characterization; Virulence; Chitosan susceptibility. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100013 |
| |
|
|
| Carbonell,G.V.; Alfieri,A.F.; Alfieri,A.A.; Vidotto,M.C.; Levy,C.E.; Darini,A.L.C.; Yanaguita,R.M.. |
| Cytotoxin production was studied in 60 Serratia marcescens strains isolated from hospitalized patients. Association of cytotoxic activity with serotype, source of isolation and presence of plasmids was also evaluated. Thirteen of the 60 S. marcescens strains produced a cytotoxic effect on Vero cells. These strains were isolated from distinct clinical sources and classified into seven different serotypes (O1:H7; O4:NM; O10:NT; O19:NM; O6,14:H4; O6,14:NM and O6,14:H1). No relationship was observed between cytotoxic activity and clinical source or serotypes of the strains. Plasmids from five cytotoxin-producing S. marcescens strains were transferred to E. coli K12/711. The transconjugants did not exhibit cytotoxicity, indicating that the cytotoxic effect is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cytotoxin production; Nosocomial infections; Plasmids; Serratia marcescens; Virulence factors. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001100005 |
| |
|
| |
|
|
| Kurbanoglu,Esabi Basaran; Ozdal,Murat; Ozdal,Ozlem Gur; Algur,Omer Faruk. |
| This work addresses the production of prodigiosin from ram horn peptone (RHP) using MO-1, a local isolate in submerged culture. First, a novel gram-negative and rod-shaped bacterial strain, MO-1, was isolated from the body of the grasshopper (Poecilemon tauricola Ramme 1951), which was collected from pesticide-contaminated fields. Sequence analysis of 16S rDNA classified the microbe as Serratia marcescens. The substrate utilization potential (BIOLOG) and fatty acid methyl ester profile (FAME) of S. marcescens were also determined. The effect of RHP on the production of prodigiosin by S. marcescens MO-1 was investigated, and the results showed that RHP supplementation promoted the growth of MO-1 and increased the production of prodigiosin. A concentration... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prodigiosin; Serratia marcescens; Ram horn peptone; Agricultural waste. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200631 |
| |
|
|
| Stancu,Mihaela Marilena. |
| ABSTRACT The aim of this study was to investigate the solvent tolerance mechanisms in Serratia marcescens strain IBBPo15 (KT315653). Serratia marcescens IBBPo15 exhibited remarkable solvent-tolerance, being able to survive in the presence of high concentrations (above 40%) of toxic organic solvents, such as cyclohexane, n-hexane, n-decane, toluene, styrene, and ethylbenzene. S. marcescens IBBPo15 produced extracellular protease and the enzyme production decreased in cells exposed to 5% cyclohexane, n-hexane, toluene, styrene, and ethylbenzene, as compared with the control and n-decane exposed cells. S. marcescens IBBPo15 cells produced carotenoid pigments and alteration of pigments profile (i.e., phytoene, lycopene) were observed in cells exposed to 5%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Serratia marcescens; Solvents; Tolerance; Mechanisms. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100704 |
| |
|
|
| Hernández Vidal,Gustavo; Ramírez Romero,Rafael; Rodríguez Tovar,Luís Edgar; Mora Valdez,Francisco A.; Vidales Contreras,Juan Antonio; Hernández Escareño,Jesús Jaime. |
| Se identificó la microflora normal, formada por hongos, levaduras y bacterias, de la conjuntiva en 50 caballos clínicamente sanos, de diferente raza y sexo, de tres a 12 años de edad, del área metropolitana de Monterrey, Nuevo León. Las muestras se tomaron del saco conjuntival de ambos ojos (n = 100 ojos) con un hisopo bajo condiciones estériles. Ningún ojo fue negativo a la presencia de microorganismos. Hubo a menudo diferencias en los tipos de colonias entre los ojos del mismo animal, 100% fueron positivos a la presencia de hongos y bacterias en ambos ojos, y 60% positivos a la presencia de levaduras. Este estudio presenta, por vez primera en conjuntiva de caballos, la presencia de Serratia marcescens, considerada microorganismo patógeno oportunista con... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Serratia marcescens; Ojo; Caballos; Conjuntiva; Queratomicosis. |
| Ano: 2010 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0301-50922010000400001 |
| |
|
|
| Ito,Margarida Fumiko; Paradela Filho,Osvaldo; Rodrigues Neto,Júlio; Beriam,Luis Otávio Saggion; Longo,Ronaldo de Souza; Santos,João Miguel dos. |
| Observou-se, em laboratório, grande número de lagartas mortas em uma criação de Heliothis virescens (Fabr.). Dessas lagartas, isolou-se uma bactéria, posteriormente identificada como Serratia marcescens Bizio. O presente trabalho registra sua ocorrência e comprova-lhe a patogenicidade sobre aquelas lagartas. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Entomopatógeno; Heliothis virescens; Serratia marcescens. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051996000200013 |
| |
| Registros recuperados: 11 | |
|
|
|
