surface balance study of the interaction between microorganisms and lipid monolayer at the air/water interface.using the surface balance technique, we have compared the interaction between acholeplasma laidlawii and some marine bacteria towards different types of monolayered lipid films. cells from a. laidlawii and serratia marinorubra penetrate the film, whereas cells from psuedomonas fluorescens form a layer underneath the film. the forces that bind microorganisms to the air/water interface are not strong enough to scatter a condensed monolayer but increase the strength of loosely packed monolayers.19765058
bacteriocin typing of serratia marcescens. a simplified system.the authors describe a simplified system for the detection of bacteriocin production by serratia marcescens with the use of six indicator strains, which include escherichia coli, klebsiella pneumoniae, citrobacter diversus, enterobacter aerogenes (two strains), and serratia rubidaea grown on arabinose minimal medium plates. of the 64 possible bacteriocin types, 11 were observed; 66% of the isolates tested were found to be one of three types. occasionally more than one bacteriocin type was observ ...1979371382
toxic effect of water-soluble fractions of crude, refined, and weathered oils on the growth of a marine bacterium.the water-soluble fractions of three crude and two refined oils reduced the growth rate and maximum cell density of the marine bacterium serratia marinorubra grown in batch culture. the weathering of a crude and a refined oil was simulated in the laboratory. the water-soluble fractions remaining from this process were more toxic to s. marinorubra than were the parent unweathered oils. increases in the magnitude of toxic effect of 3 to 30 times were observed as a function of decreasing the concen ...1977879769
use of bile-esculin agar for rapid differentiation of enterobacteriaceae.bile-esculin agar has been used for several years for the presumptive identification of group d streptococci. all members of the enterobacteriaceae family will also grow on this medium, but only certain ones can hydrolyze esculin to 6,7-dihydroxycoumarin, which reacts with iron to produce a characteristic blackening of the medium. one thousand and six cultures from clinical specimens representing 20 genera were isolated and identified. heavy inocula from fresh pure culture isolates on heart infu ...19751176613
dna relatedness among species of enterobacter and serratia.species of enterobacter and serratia were examined for deoxyribonucleic acid relatedness to klebsielleae, to atypical erwiniae, and to other members of enterobacteriaceae. deoxyribonucleic acid hybridization and then hydroxyapatite chromatography was the technique used to assess relatedness. strains of enterobacter cloacae formed two separate hybridization groups that correlate with the presence or absence of yellow pigment. pigmented e. cloacae were 75-100% related, but they were only 40-50% re ...19761260520
effects of bacterial inoculation of high-moisture ear corn on its aerobic stability, digestion, and utilization for growth by beef steers.high-moisture ear corn (hmec) was treated with specific bacterial inoculants and evaluated for its aerobic stability and utilization for growth by beef steers. immediately after harvest, hmec (65% dm) was ensiled in tower silos after being either untreated (control) or treated with the following inoculants: 1) ecosyl (e); 2) ecosyl plus serratia rubidaea (e + sr); and 3) ecosyl plus streptococcus thermophilus (e + st). a portion of hmec was frozen immediately (-20 degrees c) and subsequently tre ...19921429293
monofunctional chorismate mutase from serratia rubidaea: a paradigm system for the three-isozyme gene family of enteric bacteria.serratia rubidaea (atcc 27614) typifies a substantial number of enteric bacteria which, unlike escherichia coli, possess a monofunctional species of chorismate mutase (denoted cm-f). cm-f coexists with two additional species of chorismate mutase, each of the latter being one catalytic domain of a bifunctional protein. the two bifunctional proteins are utilized for phenylalanine (cm-p/prephenate dehydratase) and tyrosine (cm-t/cyclohexadienyl dehydrogenase) biosynthesis in all enteric bacteria. s ...19921550340
enterosistem 18-r: description and comparative evaluation with conventional methods for identification of members of the family enterobacteriaceae.the efficiency and accuracy of enterosistem 18-r (liofilchem s.r.l., roseto degli abruzzi, teramo, italy) were compared with those of conventional biochemical methods to identify 360 members (38 species) of the family enterobacteriaceae. overall, 329 strains (91.3%) were correctly identified (percentage of identification, greater than or equal to 90.0), with 37 (11.2%) requiring additional tests for complete identification. for 11 isolates (3.1%), enterosistem 18-r gave only genus identification ...19911939588
surface-active novel glycolipid and linked 3-hydroxy fatty acids produced by serratia rubidaea.a serratia rubidaea isolate with wetting activity when grown at 30 but not 37 degrees c was examined for the production of specific lipids. two novel lipids (rubiwettins r1 and rg1) were isolated and shown to be able to lower the surface tension of saline to 26 mn/m. these lipids were located in extracellular vesicles found in a 30 degrees c culture of s. rubidaea. chemical structures of these biosurfactants were determined by degradation product analyses, infrared spectroscopy, mass spectrometr ...19902345132
comparison of the exoproducts of gram-negative bacteria by sds-page.the protein exoproducts released during exponential growth of gram-negative bacteria were analysed and compared by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page). the following bacterial strains were tested: escherichia coli, klebsiella pneumoniae, citrobacter freundii, enterobacter cloacae, serratia liquefaciens, serratia rubidaea, proteus mirabilis, proteus vulgaris, salmonella minnesota, pseudomonas aeruginosa and pseudomonas fluorescens. it is demonstrated by sds-page t ...19852408403
psychrotrophic, proteolytic and lipolytic properties of enterobacteriaceae isolated from milk and dairy products.most of the enterobacteriaceae strains (73 out of 75) isolated in a previous study (wessels et al., 1988) were psychrotrophic on agar plates, with the exception of enterobacter cloacae strains. the enterobacteriaceae strains were largely non-proteolytic on milk agar medium although limited numbers of e. cloacae, serratia rubidaea and klebsiella oxytoca strains were capable of proteolytic activity at 25 degrees c. the e. cloacae and k. oxytoca strains positive at 25 degrees c were also proteolyti ...19892701399
serratia rubidaea isolated from a silastic foam dressing. 19853997256
cation transport in serratia marcescens and serratia marinorubra.the sodium, potassium, and magnesium ion contents of serratia marcescens and those of its salt-tolerant relative, s. marinoruba, were determined by atomic-absorption spectrometry. the intracellular k(+) and mg(2+) contents of both microorganisms were found to be dependent on the ionic strength of the growth or suspending medium. the mg(2+) content of s. marinoruba was generally greater than that of s. marcescens. the na(+) content of the cells was normally low and did not increase as the cells a ...19704923067
microbiological assay for organic compounds in seawater. ii. distribution of adenine, uracil, and threonine.biochemically deficient strains of serratia marinorubra have been isolated with specific requirements for adenine, uracil, and threonine. standard curves for dose to growth response have been obtained showing a linear sensitivity from 0.5 to 4.0 mg of adenine per liter of seawater, 0.1 to 2.0 mg of uracil per liter of seawater, and 0.5 to 10 mg of threonine per liter of seawater. these mutants have been used to test for the presence of their required metabolites in natural seawater samples from ...19665335381
microbiological assay for organic compounds in seawater. i. quantitative assay procedures and biotin distribution.a method for the quantitative identification of organic compounds in seawater has been developed. when auxotrophic mutants of serratia marinorubra were incubated at 21 to 24 c for 72 hr with constant agitation, standard bioassay reference curves were obtained. sodium glycerophosphate (400 mg per liter), ammonium dibasic citrate (5 g per liter), and glycerol (25 ml per liter) supplied the needed nutrients for maximal growth with a limited concentration of the required metabolite. data are present ...19655866037
new fimbrial hemagglutinin in serratia species.strains of serratia marcescens, serratia liquefaciens, serratia marinorubra, and serratia plymuthica produced one or more of the following hemagglutinins (has): mannose-sensitive ha and mannose-resistant k-ha (mr/k-ha) and p-ha (mr/p-ha) (j. p. duguid and d. c. old, in e. h. beachey (ed.), bacterial adherence, vol. 6., p. 185-217, 1980). most strains (82%) were multiply hemagglutinating. the properties of the three has are described. each ha was associated with a distinct type of fimbria: mannos ...19826128303
[is serratia rubidaea pathogenic for man? observations on a case of localized infection]. 19846463516
evaluation of rapid one system for identification of 379 strains in the family enterobacteriaceae and oxidase-negative, gram-negative nonfermenters.the ability of the rapid one system (innovative diagnostic systems, inc., norcross, ga.) to identify 364 strains in the family enterobacteriaceae and 15 oxidase-negative, gram-negative, nonfermentative rods was evaluated. kits were inoculated with no. 2 mcfarland standard suspensions, and reactions were interpreted after 4 h of incubation at 35 degrees c. overall, the method correctly identified (to the species level or to the genus level for salmonellas and non-shigella sonnei shigella species) ...19948027345
the aroq-encoded monofunctional chorismate mutase (cm-f) protein is a periplasmic enzyme in erwinia herbicola.enteric bacteria possess two species of chorismate mutase which exist as catalytic domains on the amino termini of the bifunctional phea and tyra proteins. in addition, some of these organisms possess a third chorismate mutase, cm-f, which exists as a small monofunctional protein. the cm-f gene (denoted aroq) from erwinia herbicola was cloned and sequenced for the first time. a strategy for selection by functional complementation in a chorismate mutase-free escherichia coli background was devise ...19938335631
comparative analyses of serratia spp. outer membrane porin proteins.eight serratia strains and several members of the enterobacteriaceae family were used in immunoblot and southern dna hybridization experiments and probed with antibody and dna probes specific for the 41-kda serratia marcescens porin, to determine the extent of homology between gram-negative porins. immunoblot analyses performed using porin-specific rabbit sera and cell envelope preparations from these strains revealed that all strains produced at least one cross-reactive protein in the 41-kda mo ...19938388771
purification, characterization and immunochemical properties of a novel 60-kda protein of vibrio anguillarum strains.vibrio anguillarum strains expressed increased amounts of a novel 60-kda protein when cells were grown at physiologically elevated temperatures. the relative amounts of the 60-kda protein were unaltered by changes in osmolarity or ionic concentration of the growth medium in cells grown at optimal growth temperatures. the n-terminal amino acid sequence analysis of the v. anguillarum 60-kda protein showed extensive (94-89%) sequence identity with the 60-kda heat shock protein of yersinia enterocol ...19989812371
further studies on rpos in enterobacteria: identification of rpos in enterobacter cloacae and kluyvera cryocrescens.rpos, the alternative sigma factor sigma(s), is important for bacterial survival under extreme conditions. many enterobacteria are opportunistic human pathogens and their ability to survive in a changing environment could be an essential step for their virulence. to determine the presence of this gene in enteric bacteria, an escherichia coli rpos probe was constructed and used to detect the presence of this gene in different species. a gene homologous to rpos was found in citrobacter amalonaticu ...200111491080
[community acquired sepsis by serratia rubidaea].a 48-year-old male who had a past history of alcoholic pancreatitis and diabetes mellitus was admitted to our hospital due to chills and vomiting, on august 13, 1998. his body temperature was 38.0 degrees c, and he had the disturbance of consciousness, tachypnea, tachycardia and hepatomegaly with tenderness. laboratory findings showed highly inflammatory reactions, dic and hepatorenal dysfunction. abdominal ct and us revealed multiple liver abscess with portal vein thrombus. serratia rubidaea wa ...200211904995
natural antimicrobial susceptibilities of strains of 'unusual' serratia species: s. ficaria, s. fonticola, s. odorifera, s. plymuthica and s. rubidaea.the natural susceptibility to 71 antibiotics of 104 serratia strains of serratia ficaria (n = 15), serratia fonticola (n = 18), serratia odorifera (n = 16), serratia plymuthica (n = 32) and serratia rubidaea (n = 23) was examined. mics were determined using a microdilution procedure in isosensitest broth for all the strains and in cation-adjusted mueller-hinton broth for some strains. with few exceptions, all species tested were uniformly naturally resistant to penicillin g, oxacillin, cefazolin ...200312654765
[frequency of serratia sp in urine infections of intern patients in the santa casa de misericórdia in fortaleza].in the present time the serratia is considered an important human pathogen, which has been found as causal agent of nosocomial infections mainly urine infections. we verify the frequency of the serratia sp in urine samples, in intern patients. were studied 1197 urine samples, this study show 15 positive for the serratia sp. the species found were: 7 serratia liquefaciens (46,7%), 5 serratia odorífera (33,3%) and 3 serratia rubidaea (20%).200415042191
occurrence and ecological significance of gtp in the ocean and in microbial cells.a comparison between the atp concentrations based on peak height light emission values (0 to 3 s) and integrated light flux determinations (15 to 75 s) for a variety of seawater samples revealed that the integrated method of light detection consistently yielded higher atp concentrations, ranging from 1.38 to 2.35 times larger than the corresponding peak atp values. a significant correlation (r = 0.923) was observed for a plot of deltaadp (i.e., integrated atp - peak atp) versus gtp + utp, sugges ...197816345313
occurrence and characterization of a phosphoenolpyruvate: glucose phosphotransferase system in a marine bacterium, serratia marinorubra.the mechanism of d-glucose transport in the marine bacterium serratia marinorubra was investigated. uptake is mediated by a single, constitutive phosphoenolpyruvate:sugar phosphotransferase system (pts), resulting in phosphorylation of d-glucose to d-glucose phosphate during transport. the system is saturable (k(m) = 6.4 x 10 m) and highly temperature dependent, with a q(10) of 3.5 between 5 and 15 degrees c. the system is highly specific for d-glucose; structurally related sugars and sugar alco ...197916345474
water-to-air fractionation of bacteria.differences in the ability of bacterial species to be transported from water to air by bursting bubbles were investigated. bubbles were generated in suspensions of mixed bacterial cultures, and the concentration was measured for each species in the top jet drop ejected. this concentration divided by the concentration in the bulk menstruum is the concentration factor (cf). bubbles were generated 2 cm below the liquid surface, and jet drops with diameters from 34 to 136 mum were studied. serratia ...198016345506
distribution of thiamine, biotin, and niacin in the sea.the distribution of thiamine, biotin, and niacin was investigated in surface waters collected from 20 stations in southeast alaska, by use of bioassay methods. a marine yeast, cryptococcus albidus, was used for thiamine, and mutants of the marine bacterium serratia marinorubra were used for biotin and niacin. thiamine was found in 6 (38%) of the samples in amounts ranging to 200 ng/liter; biotin was found in 8 (38%) of the samples in amounts ranging to 3.1 ng/liter. niacin was found to be comple ...196816349794
effect of salt stress on pigment production of serratia rubidaea n-1: a potential indicator strain for screening quorum sensing inhibitors from marine microbes. 200616778355
prevalence of ewingella americana in retail fresh cultivated mushrooms (agaricus bisporus, lentinula edodes and pleurotus ostreatus) in zaragoza (spain).the prevalence and mycopathogenic potential of enterobacteriaceae (especially ewingella americana) in cultivated mushrooms were studied. a total of 95 samples of agaricus bisporus, lentinula edodes and pleurotus ostreatus were analyzed to quantify the enterobacteriaceae and to identify the species isolated. the host pathogenicity test was used to verify their mycopathogenic potential. the genus pseudomonas was also quantified, since it is the predominant bacterial group in cultivated mushrooms. ...200419712317
presence of quorum-sensing inhibitor-like compounds from bacteria isolated from the brown alga colpomenia sinuosa.several gram-negative bacterial species use n-acyl homoserine lactone (ahl) molecules as quorum-sensing (qs) signals to regulate various biological functions. similarly, various bacteria can stimulate, inhibit or inactivate qs signals in other bacteria by producing molecules called as quorum-sensing inhibitors (qsi). our aim was to screen and identify the epibiotic bacteria associated with brown algae for their ability of producing qs-inhibiting activity.200919732328
patterning of mutually interacting bacterial bodies: close contacts and airborne signals.bacterial bodies (colonies) can develop complex patterns of color and structure. these patterns may arise as a result of both colony-autonomous developmental and regulatory processes (self-patterning) and environmental influences, including those generated by neighbor bodies. we have studied the interplay of intra-colony signaling (self-patterning) and inter-colony influences in related clones of serratia rubidaea grown on rich media.201020462411
factors affecting preference responses of the freshwater ciliate uronema nigricans to bacterial enhance our understanding of the factors affecting feeding selectivity of bacterivorous protists in aquatic systems, we examined the preference responses of the freshwater ciliate uronema nigricans towards three bacterial prey taxa, pseudomonas luteola, serratia rubidaea, and aeromonas hydrophila. potential factors influencing the predator-prey contact rate included the previous feeding history of the ciliate and physiological state of bacteria. preference indexes were obtained from multiple- ...200921462552
characterization and enhanced production of prodigiosin from the spoiled coconut.many bacterial secondary products are bioactive substances that play an important role in biotechnology and pharmacology (e.g., as antibiotics or antitumor agents). over the past few years interest in prodigiosin has been increased due to its promising anti-cancer activity. prodigiosin is also of potential clinical interest because it is reported to have anti-fungal, anti-bacterial, anti-protozoal/anti-malarial, and immunosuppressive activity. thus there is a need to develop a high-throughput an ...201122072139
isolation of serratia rubidaea from a mixed infection after a horse bite infections are very rarely reported in the medical literature. here we present a case of a severe facial infection in a 2-year-old boy after a horse bite, from which serratia rubidaea and enterobacter cloacae were isolated. some pieces of grass were found inside the wound and were removed before performing a surgical toilet. the presence of these two gram-negative bacteria associated with a horse bite infection, as well as other organisms such as anaerobes, pseudomonas, gram-positive ...201223267624
investigating the compatibility of the biocontrol agent clonostachys rosea ik726 with prodigiosin-producing serratia rubidaea s55 and phenazine-producing pseudomonas chlororaphis toza7.this study was carried out to assess the compatibility of the biocontrol fungus clonostachys rosea ik726 with the phenazine-producing pseudomonas chlororaphis toza7 or with the prodigiosin-producing serratia rubidaea s55 against fusarium oxysporum f. sp. radicis-lycopersici. the pathogen was inhibited by both strains in vitro, whereas c. rosea displayed high tolerance to s. rubidaea but not to p. chlororaphis. we hypothesized that this could be attributed to the atp-binding cassette (abc) protei ...201626860841
analysis of scalp wound infections among craniocerebral trauma patients following the 2008 wenchuan explore the causes of scalp wound infection, pathogen distribution, characteristics of antimicrobial susceptibility and therapeutic measures following craniocerebral trauma caused by the 2008 wenchuan earthquake. material and201222274967
isolation and characterization of plant and human pathogenic bacteria from green pepper (capsicum annum l.) in riyadh, saudi arabia.forty-three bacterial isolates in five genera were recovered from naturally infected green pepper fruits (38 samples) showing dark brown, irregular-shaped splotches. the pathogenicity test was performed on healthy green pepper fruits and red colonies were from inoculated fruits showing the same symptoms and the infected area developed into soft rot. their identification was based on phenotypic characters and sequence of the gene fragment coding 16s rrna. of 43 isolates, 10 showing splotches on g ...201428324470
effect of different seawaters on the development of biochemically deficient mutants of serratia marinorubra.the effect of different seawaters on survival and growth of biotin-, isoleucine-, and uracil-requiring mutants of the marine bacterium, serratia marinorubra, has been investigated. samples of seawater were collected from coastal waters, the california current, and central north pacific waters at depths of 1, 25, 50, 100, 250, and 500 m. the growth or survival of the test bacterium in basal medium prepared in these seawater samples was determined. the control water was synthetic or charcoal-treat ...19655867646
production and characterization of rhamnolipids produced by serratia rubidaea snau02 under solid-state fermentation and its application as biocontrol agent.the present study aimed at exploring mahua (madhuca indica) oil cake as a novel substrate for the production of biosurfactant by serratia rubidaea snau02 under solid-state fermentation (ssf). response surface methodology showed followings as the optimal conditions for the production of biosurfactant: mahua oil cake 7.48 g, 2.5 ml inoculum size (1×10(8) cells/ml), and ph 7.22 and 31 °c temperature. the characterization of the biosurfactant by tlc, ft-ir and gc-ms revealed the presence of rhamnoli ...201425305653
draft genome sequence of the serratia rubidaea cip 103234t reference strain, a human-opportunistic pathogen.we provide here the first genome sequence of a serratia rubidaea isolate, a human-opportunistic pathogen. this reference sequence will permit a comparison of this species with others of the serratia genus.201526586886
the fitness change and the diversity maintenance in the growing mixed colony of two serratia rubidaea clones.we extend the palette of possible colonies models of two different clones of serratia rubidaea. our model fits the real morphology of the colonies. we also present that the colony growth leads to a change in the ratio of the fitness which propose to be caused by the production of some signal. this signal influences the behavior of the clones and leads to the prolonged diversity maintenance. the explanation of the diversity maintenance of the mixed concurrent population in one niche is the curren ...201626694714
complete genome sequence of serratia rubidaea isolated in china.we report here the first complete genome of serratia rubidaea, isolated from a patient in china.201627125482
first complete genome sequence of a virulent bacteriophage infecting the opportunistic pathogen serratia rubidaea.a serratia rubidaea phage, vb_sru ime250, was isolated from hospital sewage. the morphology suggested that phage vb_sru ime250 should be classified as a member of the family myoviridae. high-throughput sequencing revealed that the phage genome has 154,938 nucleotides and consists of 193 coding dna sequences, 90 of which have putative functions. the genome of vb_sru ime250 is a linear, double-stranded dna with an average gc content of 40.04%. the phage has a relatively high similarity to klebsiel ...201728265773
[bacteremia by a serratia rubidaea with an atypical quinolones resistance phenotype].serratia spp. causes the 2% of nosocomial infections. serratia marcescens is the pathogenic species for excellence as it causes more than 90% of cases, however, there are very few reported cases of clinical infection caused by other minority species, among which is s. rubidaea. we present a case of nosocomial bacteremia by s. rubidaea, probably related to a peripheral catheter, in a healthy teenager who consulted to the emergency room after suffering a fit while practicing strenuous sport.201425146213
serratia rubidaea as an invasive pathogen.serratia rubidaea biotype 1 was isolated from the bile and blood of a patient with a bile tract carcinoma obstructing the common bile duct and who underwent invasive procedures. the infection was cleared after adequate treatment with antibiotics.19968748310
serratia rubidaea isolated from a silastic foam dressing.a pigment-producing strain of serratia rubidaea was isolated from two consecutive cultures from a sponge of silastic foam used as a dressing for chronic crural ulcers. the bacterium caused a red discolouration of the sponge and the surrounding part of the leg. the silastic sponge creates a new type of environment for microorganisms. the growth of previously rare bacteria such as s. rubidaea may be favoured by conditions within the sponge.19846490172
biosurfactant production by serratia rubidaea snau02 isolated from hydrocarbon contaminated soil and its physico-chemical characterization.the aim of the study was to characterize and optimize the growth media for biosurfactant production from serratia rubidaea snau02 isolated from hydrocarbon-contaminated soil from cuddalore district, tamilnadu, india. the biosurfactant produced by s. rubidaea snau02, was able to reduce the surface tension to 34.4 mn m(-1) in msm medium. the biosurfactant was characterized by ft-ir and gc-ms analysis. the gc-ms analysis shows that dirhamnolipid was detected in abundance as predominant congener tha ...201323993704
real time monitoring of population dynamics in concurrent bacterial growth using sift-ms quantification of volatile metabolites.population dynamics of three different bacterial species, serratia rubidaea (r), serratia marcescens (f) and escherichia coli (ec), growing in single or mixed populations in liquid media, was monitored by real time headspace quantification of volatile compounds using selected ion flow tube mass spectrometry, sift-ms. the three bacterial species interact with each other in a competitive fashion in a way similar to the game "rock-paper-scissors" (r-ec-f). the concentrations of volatile metabolites ...201323801325
chromosome-encoded broad-spectrum ambler class a β-lactamase rub-1 from serratia rubidaea.whole-genome sequencing of serratia rubidaea cip 103234(t) revealed a chromosomally located ambler class a β-lactamase gene. the gene was cloned, and the β-lactamase, rub-1, was characterized. rub-1 displayed 74% and 73% amino acid sequence identity with the gil-1 and tem-1 penicillinases, respectively, and its substrate profile was similar to that of the latter β-lactamases. analysis by 5' rapid amplification of cdna ends revealed promoter sequences highly divergent from the escherichia coli σ( ...201727956418
isolation and characterization of a chromium-resistant bacterium serratia sp. cr-10 from a chromate-contaminated site.a novel bacterium, cr-10, was isolated from a chromium-contaminated site and capable of removing toxic chromium species from solution by reducing hexavalent chromium to an insoluble precipitate. sequence analysis of 16s rrna gene of strain cr-10 showed that it was most closely related to serratia rubidaea jcm 1240(t) (97.68%). physiological and chemotaxonomic data also supported that strain cr-10 was identified as serratia sp., a genus which was never specially reported chromate-resistant before ...201121318365
[serratia rubidaea bacteremia].serratia rubidaea is an opportunist pathogenic bacterium, it is rarely identified in man, and when so, generally found in the respiratory tract, wounds, feces, bile, but also in blood. s. rubidaea can be responsible for infection, particularly in debilitated patients, receiving broad spectrum antibiotics or after undergoing extensive surgery, or invasive procedures. we report the case of a 54-year-old, nicotinic patient, with no previous medical history, admitted for complete arrhythmia due to a ...200717321092
evaluation of the four-hour micro-id technique for direct identification of oxidase-negative, gram-negative rods from blood cultures.a 4-h micro-id technique for direct identification of oxidase-negative gram-negative rods from positive blood cultures was compared to subculture and species identification of single colonies by api 20e and micro-id, using standardized inocula. a total of 127 patients (220 positive cultures) were studied. isolates included 96 escherichia coli, 46 klebsiella pneumoniae, 7 klebsiella oxytoca, 8 enterobacter aerogenes, 17 enterobacter cloacae, 19 serratia marcescens, 2 serratia liquefaciens, 8 prot ...19806999020
ammonia produced by bacterial colonies promotes growth of ampicillin-sensitive serratia sp. by means of antibiotic inactivation.volatiles produced by bacterial cultures are known to induce regulatory and metabolic alterations in nearby con-specific or heterospecific bacteria, resulting in phenotypic changes including acquisition of antibiotic resistance. we observed unhindered growth of ampicillin-sensitive serratia rubidaea and s. marcescens on ampicillin-containing media, when exposed to volatiles produced by dense bacterial growth. however, this phenomenon appeared to result from ph increase in the medium caused by ba ...201424716667
epiphytic marine pigmented bacteria: a prospective source of natural antioxidants.awareness on antioxidants and its significance in human healthcare has increased many folds in recent time. increased demand requisite on welcoming newer and alternative resources for natural antioxidants. seaweed associated pigmented bacteria screened for its antioxidant potentials reveals 55.5% of the organisms were able to synthesize antioxidant compounds. dpph assay showed 20% of the organisms to reach a antioxidant zone of 1 cm and 8.3% of the strains more than 3 cm. pseudomonas koreensis ( ...201526221086
role of the nephridia in the elimination of foreign cells from the coelomic fluid of two polychaete annelids, with observations on the structure of the nephridia.formalinized sheep red blood cells and living bacteria (serratia marinorubra) are rapidly phagocytosed. when infected into arenicola marina and neoamphitrite figulus. phagocytes clump but later disperse. after sheep red cells have been taken up by phagocytes they migrate through the nephridial cells into the lumen. after bacteria have been taken up by the phagocytes they also clump and again later disperse but they are not found within the nephridial cell walls probably because the bacteria are ...198718620206
Displaying items 1 - 57 of 57