abstract：:One of the proposed mechanisms by which rhizobacteria enhance plant growth is through the production of plant growth regulators. Five plant growth promoting rhizobacterial (PGPR) strains produced the cytokinin dihydrozeatin riboside (DHZR) in pure culture. Cytokinin production by Pseudomonas fluorescens G20-18, a rifa...

journal_title：Canadian journal of microbiology

authors： García de Salamone IE,Hynes RK,Nelson LM

更新日期：2001-05-01 00:00:00

abstract：:The PII protein is apparently involved in the control of NifA activity in Herbaspirillum seropedicae. To evaluate the probable role of PII in signal transduction, uridylylation assays were conducted with purified H. seropedicae PII and Escherichia coli GlnD, or a cell-free extract of H. seropedicae as sources of uridy...

journal_title：Canadian journal of microbiology

authors： Benelli EM,Buck M,de Souza EM,Yates MG,Pedrosa FO

更新日期：2001-04-01 00:00:00

abstract：:The activities of isocitrate lyase, esterase, and lipase by the psychrotrophic Acinetobacter sp. strain HH1-1 were monitored during incubation at 25 degreesC, 5 degreesC, and after a 25 degreesC to 5 degreesC down shift in growth temperature. During growth at 25 degreesC, isocitrate lyase activity was detected in cell...

journal_title：Canadian journal of microbiology

authors： Barbaro SE,Trevors JT,Inniss WE

更新日期：2001-03-01 00:00:00

abstract：:Rhizobia are used exclusively in agricultural systems for enhancing the ability of legumes to fix atmospheric nitrogen. Knowledge about the indigenous population is necessary for the selection and application of inoculant strains. In this study, we have assessed the genetic diversity of Bradyrhizobium strains isolated...

journal_title：Canadian journal of microbiology

authors： Saleena LM,Loganathan P,Rangarajan S,Nair S

更新日期：2001-02-01 00:00:00

abstract：:Brachiaria, predominantly an African genus, contains species, such as B. brizantha, an apomictic C4 grass, that are commercially important forage grasses in tropical America, where they now cover about 55 million hectares. From B. brizantha accession CIAT 6780, we isolated an endophytic fungus that may be economically...

journal_title：Canadian journal of microbiology

authors： Kelemu S,White JF Jr,Muñoz F,Takayama Y

更新日期：2001-01-01 00:00:00

abstract：:A dairy product processing plant was studied for 2.5 years to examine contamination with Staphylococcus aureus and try to correlate the source of contamination. Cultures were submitted to an antibiotic susceptibility test (AST) and characterised by Pulsed-field Gel Electrophoresis (PFGE) analysis. Results showed that ...

journal_title：Canadian journal of microbiology

authors： Tondo EC,Guimarães MC,Henriques JA,Ayub MA

更新日期：2000-12-01 00:00:00

abstract：:The 16S-23S rDNA spacer of the type strain (ATCC 35879) of Xylella fastidiosa was amplified by PCR, cloned, and sequenced. The spacer sequence (455 bp) contains two tRNA (tRNA(ala) and tRNA(ile)) genes. Identical tRNA genes were also found in the 16S-23S spacer sequences of all the 51 strains of X. fastidiosa retrieve...

journal_title：Canadian journal of microbiology

authors： Chen J,Banks D,Jarret RL,Jones JB

更新日期：2000-12-01 00:00:00

abstract：:Three composts were tested for their ability to suppress root and stem rot caused by the soil borne fungal pathogen Fusarium oxysporum f. sp. radicis-cucumerinum (FORC) on cucumber. Two of the composts were prepared from separated dairy solids either by windrow (WDS) or vermicomposting (VMC) while the third, obtained ...

journal_title：Canadian journal of microbiology

authors： Kannangara T,Utkhede RS,Paul JW,Punja ZK

更新日期：2000-11-01 00:00:00

abstract：:Overexpression and purification are procedures used to allow functional and structural characterization of proteins. Many overexpressed proteins are partially or completely insoluble, and can not be easily purified. The NifA protein is an enhancer-binding protein involved in activating the expression of nif and some f...

journal_title：Canadian journal of microbiology

authors： Monteiro RA,Souza EM,Yates MG,Pedrosa FO,Chubatsu LS

更新日期：2000-11-01 00:00:00

abstract：:In the past decade, the large tailings pond (Mildred Lake Settling Basin) on the Syncrude Canada Ltd. lease near Fort McMurray, Alta., has gone methanogenic. Currently, about 60%-80% of the flux of gas across the surface of the tailings pond is methane. As well as adding to greenhouse gas emissions, the production of ...

journal_title：Canadian journal of microbiology

authors： Holowenko FM,MacKinnon MD,Fedorak PM

更新日期：2000-10-01 00:00:00

abstract：:Pathogenic and nonpathogenic isolates of Venturia inaequalis were grown in liquid culture. Hyphae were treated with two types of fimbrial antiserum (AU- and AV-1) and examined by immunofluorescent microscopy, in order to establish the distribution of fimbrial epitopes in whole cell mounts. The AV-1 antiserum was speci...

journal_title：Canadian journal of microbiology

authors： Svircev AM,Smith RJ,Zhou T,Day AW

更新日期：2000-09-01 00:00:00

abstract：:DNA-degrading activity from anaerobic samples of bovine ruminal fluid, primary anaerobic digestor wastewater, freshwater sediments, and marine sediments was observed in the presence of 5 mM EDTA. Nuclease activity experiments involved exposing salmon chromosomal DNA to the environmental samples in 50 mM pH 7.2 buffer,...

journal_title：Canadian journal of microbiology

authors： Ruiz TR,Andrews S,Smith GB

更新日期：2000-08-01 00:00:00

abstract：:Virulent strains of the fish pathogen Aeromonas salmonicida, which have surface S-layers (S+), efficiently adhere to, enter, and survive within macrophages. Here we report that S+ bacteria were 10- to 20-fold more adherent to non-phagocytic fish cell lines than S-layer-negative (S-) mutants. When reconstituted with ex...

journal_title：Canadian journal of microbiology

authors： Garduño RA,Moore AR,Olivier G,Lizama AL,Garduño E,Kay WW

更新日期：2000-07-01 00:00:00

abstract：:Yeast predation was studied with respect to the range of its distribution among ascomycetous yeasts, the range of yeast species that can be affected, and nutritional aspects of the phenomenon. The yeasts identified as predators belong to the Saccharomycopsis clade as defined on the basis of rDNA sequence relatedness. ...

journal_title：Canadian journal of microbiology

authors： Lachance MA,Pupovac-Velikonja A,Natarajan S,Schlag-Edler B

更新日期：2000-06-01 00:00:00

abstract：:In the divE mutant, which has a temperature-sensitive mutation in the tRNA1(Ser) gene, the synthesis of beta-galactosidase is dramatically decreased at the non-permissive temperature. In Escherichia coli, the UCA codon is only recognized by tRNA1(Ser). Several genes containing UCA codons are normally expressed at 42 d...

journal_title：Canadian journal of microbiology

authors： Kubo T,Aiso T,Ohki R

更新日期：2000-06-01 00:00:00

abstract：:The effects of various hydrocarbon substrates, and a chemical surfactant capable of enhancing crude-oil biodegradation, on the community structure of a mixed-bacterial inoculum were examined in batch culture. Of 1000 TSA-culturable isolates, 68.6% were identified at the genus level or better by phospholipid fatty acid...

journal_title：Canadian journal of microbiology

authors： Van Hamme JD,Odumeru JA,Ward OP

更新日期：2000-05-01 00:00:00

abstract：:Caulobacters are biofilm-forming members of the natural flora of soil and aquatic environments, which exhibit several characteristics that make them attractive for development of high surface area microbial bioreactors or biosensors. Although caulobacters are well characterized genetically, little is known about their...

journal_title：Canadian journal of microbiology

authors： Smit J,Sherwood CS,Turner RF

更新日期：2000-04-01 00:00:00

abstract：:The use of microorganisms for bioremediation of contaminated soils may be enhanced with an understanding of the pathways involved in their degradation of hazardous compounds. Ralstonia sp. strain RJGII.123 was isolated from soil located at a former coal gasification plant, based on its ability to mineralize carbazole,...

journal_title：Canadian journal of microbiology

authors： Schneider J,Grosser RJ,Jayasimhulu K,Xue W,Kinkle B,Warshawsky D

更新日期：2000-03-01 00:00:00

abstract：:A virulent strain of pigeon pea wilt pathogen was isolated from wilted pigeon pea plants and was identified as Fusarium oxysporum f. sp. udum. Many bacterial cultures showing antagonism to the pathogen were isolated from various ecological niches. When tested under pot and field conditions, development of fusarial wil...

journal_title：Canadian journal of microbiology

authors： Bapat S,Shah AK

更新日期：2000-02-01 00:00:00

abstract：:Sixty-four species of filamentous fungi from five flare pits in northern and western Canada were tested for their ability to degrade crude oil using gas chromatographic analysis of residual hydrocarbons following incubation. Nine isolates were tested further using radiorespirometry to determine the extent of mineraliz...

journal_title：Canadian journal of microbiology

authors： April TM,Foght JM,Currah RS

更新日期：2000-01-01 00:00:00

abstract：:The expression of the toxA and regA genes in Pseudomonas aeruginosa is negatively regulated by iron at the transcriptional level. We have previously described ptxR, an exotoxin A regulatory gene which appears to enhance toxA expression through regA. In this study, we have tried to determine if ptxR expression correlat...

journal_title：Canadian journal of microbiology

authors： Colmer JA,Hamood AN

更新日期：1999-12-01 00:00:00

abstract：:A soluble cytochrome P450 (P450EP1A) induced by 2-ethoxyphenol was purified to apparent homogeneity from Corynebacterium sp. strain EP1. The P450EP1A showed a single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis with a molecular weight of about 45 kDa. The CO-reduced difference spectra of P450EP1A ...

journal_title：Canadian journal of microbiology

authors： Kawahara N,Ikatsu H,Kawata H,Miyoshi S,Tomochika K,Sinoda S

更新日期：1999-10-01 00:00:00

abstract：:In Japan, antimicrobial agent therapy for patients with diarrhea due to enterovirulent organisms including enterohemorrhagic Escherichia coli (EHEC) is common, and norfloxacin (NFLX), fosfomycin, and kanamycin are recommended for EHEC treatment by the Japanese Ministry of Health and Welfare. The aim of this study was ...

journal_title：Canadian journal of microbiology

authors： Yoh M,Frimpong EK,Voravuthikunchai SP,Honda T

更新日期：1999-09-01 00:00:00

abstract：:A morphological and physiological description of an anamorphic basidiomycetous yeast species, named Trichosporon guehoae (CBS 8521T), is presented. The ability to assimilate several aliphatic and aromatic compounds as sole source of carbon and energy is reported. The phylogenetic position within the genus, based on nu...

journal_title：Canadian journal of microbiology

authors： Middelhoven WJ,Scorzetti G,Fell JW

更新日期：1999-08-01 00:00:00

abstract：:The metal-binding properties of Pseudomonas aeruginosa PAO1 biofilms were investigated using four metals (Cu, Fe, Au, and La). All but one of the metals (i.e., Cu) were bound by the biofilms in amounts that were significantly greater than those bound by planktonically grown cells of the same strain. Lanthanum precipit...

journal_title：Canadian journal of microbiology

authors： Langley S,Beveridge TJ

更新日期：1999-07-01 00:00:00

abstract：:To determine the subcellular location of the Streptococcus mutans P1 protein C-terminal anchor, cell envelope fractionation experiments were conducted in combination with Western immunoblotting, using monoclonal antibody MAb 6-8C specific for an epitope that maps near the C terminus of P1 protein and also a polyclonal...

journal_title：Canadian journal of microbiology

authors： Homonylo-McGavin MK,Lee SF,Bowden GH

更新日期：1999-06-01 00:00:00

abstract：:Numerous ultrastructural and biochemical analyses have been performed to characterize the cell wall composition and structure of Candida albicans. However, little investigation has focused on how subtle differences in cell wall structure influence the intracellular transport of amino acids and monosaccharides. In this...

journal_title：Canadian journal of microbiology

authors： Braun PC

更新日期：1999-05-01 00:00:00

abstract：:Using a mixture of three mono nitrophenols as sole carbon, nitrogen and energy sources, mixed cultures were enriched from municipal activated sludge to degrade both nitrophenols and nitrobenzene. Bacterial growth and degradation rate could be increased by supplementing the medium with 0.1% YE. Microorganisms were isol...

journal_title：Canadian journal of microbiology

authors： Zhao JS,Ward OP

更新日期：1999-05-01 00:00:00

abstract：:Bacteria are known to rapidly produce new phenotypes, but it is unclear how phenotype "plasticity" relates to studies on the population ecology of bacteria in complex environments. We characterised a collection of 14 spontaneous phenotype variants, derived from in vitro and in vivo cultures (wheat roots) of Pseudomona...

journal_title：Canadian journal of microbiology

authors： Barnett SJ,Alami Y,Singleton I,Ryder MH

更新日期：1999-04-01 00:00:00

abstract：:The effect of atmospheric composition and storage temperature on growth and survival of uninjured and sublethally heat-injured Escherichia coli O157:H7, inoculated onto brain heart infusion agar containing 0.3% beef extract (BEM), was determined. BEM plates were packaged in barrier bags in air, 100% CO2, 100% N2, 20% ...

journal_title：Canadian journal of microbiology

authors： Semanchek JJ,Golden DA,Williams RC

更新日期：1999-03-01 00:00:00

abstract：:Two new yeast species were isolated from flowers of Hibiscus species in Eastern and Northern Australia. Kodamaea kakaduensis is heterothallic, haploid, and similar to other Kodamaea species and to Candida restingae. Buds are often produced on short protuberances, and a true mycelium is formed. The new species differs ...

journal_title：Canadian journal of microbiology

authors： Lachance MA,Bowles JM,Starmer WT,Barker JS

更新日期：1999-02-01 00:00:00

abstract：:Fusaproliferin (FP), a toxic metabolite of the world-wide maize pathogens Fusarium proliferatum and Fusarium subglutinans, was recently found to be a natural contaminant of maize. Its toxic activity on haematopoietic human cell lines and its teratogenic effects on chicken embryos has been recently proved. Therefore a ...

journal_title：Canadian journal of microbiology

authors： Monti SM,Fogliano V,Randazzo G,Peluso G,Logrieco A,Ritieni A

更新日期：1999-01-01 00:00:00

abstract：:Antibiotic susceptibility tests and restriction enzyme analysis (REA) of genomic DNA were performed to characterize the relationship between sources of isolates of yellow-pigmented enterococci. Antibiotic susceptibility tests were conducted with 10 therapeutic antibiotics and 54 isolates grouped by source (wild and ot...

journal_title：Canadian journal of microbiology

authors： Bahirathan M,Puente L,Seyfried P

更新日期：1998-11-01 00:00:00

abstract：:The adherence of Streptococcus pneumoniae to epithelial (A549) lung cells was studied and the bacterial binding distribution was found to be nonrandom (non-Gaussian). Analysis of the dependency of bacterial binding on the cell cycle of A549 cells revealed that approximately 1.8 times more bacteria bind to G2 cells tha...

journal_title：Canadian journal of microbiology

authors： Bérubé LR,Jouishomme H,Jarrell HC

更新日期：1998-05-01 00:00:00

abstract：:The Bacillus subtilis glutamyl-tRNA synthetase (GluRS), encoded by the gltX gene, aminoacylates its homologous tRNA(Glu) and tRNA(Gln) with glutamate. This gene was cloned with its sigma A promoter and a downstream region including a rho-independent terminator in the shuttle vector pRB394 for Escherichia coli and B. s...

journal_title：Canadian journal of microbiology

authors： Pelchat M,Lacoste L,Yang F,Lapointe J

更新日期：1998-04-01 00:00:00

abstract：:Marine shrimp of the species Penaeus monodon were collected from the coastal region (Haroa) of the deltaic Sundarbans of West Bengal, India during the premonsoon period in 1996. Klebsiella pneumoniae was isolated from the alimentary canal and gills of the shrimp as the sole isolate. All 10 isolated strains were resist...

journal_title：Canadian journal of microbiology

authors： Choudhury P,Kumar R

更新日期：1998-02-01 00:00:00

abstract：:Subtyping Neisseria meningitidis by methods that rely on monoclonal antibody (mAb) reactivity results in an unusually high number of strains that are not subtypeable. To subtype 48 strains isolated (1993-1994) in the province of Quebec that were not subtypeable by mAb-based techniques, we used DNA sequencing of the va...

journal_title：Canadian journal of microbiology

authors： Arhin FF,Moreau F,Coulton JW,Mills EL

更新日期：1998-01-01 00:00:00

abstract：:A full-scale nuclear fuel waste disposal container experiment was carried out 240 m below ground in an underground granitic rock research laboratory in Canada. An electric heater was surrounded by buffer material composed of sand and bentonite clay and provided heat equivalent to what is anticipated in a Canadian nucl...

journal_title：Canadian journal of microbiology

authors： Stroes-Gascoyne S,Pedersen K,Haveman SA,Dekeyser K,Arlinger J,Daumas S,Ekendahl S,Hallbeck L,Hamon CJ,Jahromi N,Delaney TL

更新日期：1997-12-01 00:00:00

abstract：:The bacterial flora of an experimental plant that processes liquid swine manure by an aerated compartmented (multistage) lagoon system has been studied. The total flora is characterized by a larger number of oligotrophic bacteria than eutrophic ones. Each compartment displays a specific flora, different from the flora...

journal_title：Canadian journal of microbiology

authors： Chikh G,Pourquié J,Kaiser P,Davila AM

更新日期：1997-11-01 00:00:00

abstract：:A series of synthetic promoters, based upon the Escherichia coli sigma 70 consensus promoter sequence, was constructed upstream of the lacZ reporter gene in the modified broad-host-range vector pQF52. The role of the intervening spacer region in gene expression in Pseudomonas aeruginosa and E. coli was studied by inse...

journal_title：Canadian journal of microbiology

authors： McLean BW,Wiseman SL,Kropinski AM

更新日期：1997-10-01 00:00:00