Isolation of antibiotic-resistant and antimetabolite-resistant mutants of Frankia strains EuI1c and Cc1.17.

abstract：:The B subunit of Escherichia coli heat-labile enterotoxin (LTB), a nontoxic molecule with potent biological properties, is a powerful mucosal and parenteral adjuvant that induces a strong immune response against co-administered or coupled antigens. In this paper, the effect of LTB on the humoral immune response to rec...

journal_title：Canadian journal of microbiology

authors： da Silva Ramos Rocha A,Conceição FR,Grassmann AA,Lagranha VL,Dellagostin OA

更新日期：2008-08-01 00:00:00

abstract：:The synthesis of the nucleotide precursors for peptidoglycan is regulated by the relA gene in Escherichia coli. Thus, nucleotide precursors labeled with [3H]diaminopimelic acid accumulated in a relA strain but not in an isogenic relA+ strain during amino acid deprivation. Furthermore, nucleotide precursor synthesis wa...

journal_title：Canadian journal of microbiology

authors： Ishiguro EE

更新日期：1982-06-01 00:00:00

abstract：:Three types of bacteria are associated with leprosy: Mycobacterium leprae, leprosy-derived corynebacteria (LDC), and armadillo-derived mycobacteria (ADM). The immunological relationships between these three types of bacteria and Mycobacterium bovis BCG, used as a reference, were determined by cross-immunoelectrophores...

journal_title：Canadian journal of microbiology

authors： Baelden MC,Bouckaert AE,Grégoire D,van de Poele M,Coene M

更新日期：1994-06-01 00:00:00

abstract：:Strict anaerobic cultures of Mucor hiemalis lead to major modifications of the quantitative and qualitative composition of sterols. Sterols of which the lateral chain contains an ethyl or ethylidene group in C24 are for the first time brought to evidence in a Mucorales. Isolation in the same conditions of E-ethylidene...

journal_title：Canadian journal of microbiology

authors： Herber R,Villoutreix J,Granger P,Chapelle S

更新日期：1983-05-01 00:00:00

abstract：:Ribosomal preparations from Neisseria gonorrhoeae types 1 and 4 were examined for their in vitro stimulation of mouse splenocytes to determine the ribosomal moiety or contaminant responsible for the immunoproliferative activity. In immunodiffusion tests with homologous rabbit antiserum, crude 70S ribosomes formed four...

journal_title：Canadian journal of microbiology

authors： Brodeur BR

更新日期：1978-05-01 00:00:00

abstract：:Habitat fragmentation affects the biodiversity and function of aboveground organisms in natural ecosystems but has not been studied for effects on belowground species. In this paper, we consider the diversity of the rhizobia associated with the indigenous legume Dalea purpurea in 3 residual prairie areas in Minnesota ...

journal_title：Canadian journal of microbiology

authors： Tlusty B,van Berkum P,Graham PH

更新日期：2005-01-01 00:00:00

abstract：:The production of cold shock proteins (csps) and cold acclimation proteins (caps) was characterized in the psychrotrophic bacterium Pseudomonas putida Q5 and its transconjugant P. putida Q5T which contains the toluene-degradative TOL (pWWO) plasmid, using two-dimensional gel electrophoresis and computing scanning lase...

journal_title：Canadian journal of microbiology

authors： Gumley AW,Inniss WE

更新日期：1996-08-01 00:00:00

abstract：:Chitinases isolated from membrane and cytosolic fractions of two mucoraceous fungi, Choanephora cucurbitarum and Phascolomyces articulosus, were investigated. The membrane-bound chitinase was isolated by Bio-Gel P-100 and DEAE Bio-Gel A chromatographic techniques. On SDS-PAGE the chitinase from both fungi migrated as ...

journal_title：Canadian journal of microbiology

authors： Balasubramanian R,Manocha MS

更新日期：1992-04-01 00:00:00

abstract：:Lymphocytic choriomeningitis virus could be demonstrated earlier in mice inoculated with clinical specimens if the mice were sacrificed before they appeared sick for examination by the fluorescent antibody technique. In the procedure, the optimal route for inoculation was intracerebral and the best organ tested for st...

journal_title：Canadian journal of microbiology

authors： Lewis VJ,Thacker WL,Mitchell SH

更新日期：1976-11-01 00:00:00

abstract：:Lysis of mid-log phase cells of the Gram-positive bacterium, Corynebacterium sepedonicum, by a combination of lysozyme treatment and incubation with alkaline sodium dodecyl sulfate at 56 degrees C led to the recovery of a single plasmid. The plasmid was purified in CsCl density gradients, and its molecular weight esti...

journal_title：Canadian journal of microbiology

authors： Clark MC,Lawrence CH

更新日期：1986-08-01 00:00:00

abstract：:A technique is described that employs vapor fixation and a simple vapor diffusion dehydration apparatus to minimize the disturbance of delicate fungal structures during preparation for scanning electron microscopy. The technique is applicable to fungi grown on agar media or on natural substrates. ...

journal_title：Canadian journal of microbiology

authors： King EJ,Brown MF

更新日期：1983-06-01 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：:The suitability of two types of membrane filters for scanning and transmission electron-microscopical examination of chlamydospores formed from macroconidia of Fusarium solani from soil was tested. An improved method to incubate propagules in soil and to collect them free from soil particles for electron-microscopical...

journal_title：Canadian journal of microbiology

authors： Van Eck WH

更新日期：1976-11-01 00:00:00

abstract：:The environmental distribution of Giardia spp. and Cryptosporidium spp. is dependent upon human, agricultural, and wildlife sources. The significance of each source with regard to the presence of parasites in the environment is unknown. This 2-year study examined parasite prevalence in human sewage influent, wildlife,...

journal_title：Canadian journal of microbiology

authors： Heitman TL,Frederick LM,Viste JR,Guselle NJ,Morgan UM,Thompson RC,Olson ME

更新日期：2002-06-01 00:00:00

abstract：:Menadione reductase (EC 1.6.99.2) has been purified 67-fold from Clostridium tyrobutyricum extracts. The molecular weight was found to be 60 000 and the prosthetic group was identified as FMN on the basis of the enzymatic analysis data. The binding of FMN to the menadione dehydrogenase apoenzyme was relatively weak wi...

journal_title：Canadian journal of microbiology

authors： Petitdemange H,Marczak R,Raval G,Gay R

更新日期：1980-03-01 00:00:00

abstract：:Five yeast strains belonging to the genus Cryptococcus Vuillemin were isolated from steppe plants and turf collected in the Prioksko-terrasny biosphere reserve (Moscow region, Russia). Sequence analyses of the D1/D2 domains of the 26S rDNA and of the internal transcribed spacer region revealed that these yeast strains...

journal_title：Canadian journal of microbiology

authors： Golubev WI,Sampaio JP,Alves L,Golubev NW

更新日期：2004-12-01 00:00:00

abstract：:In our study of opportunistic pathogens, we have some indication that Staphylococcus aureus can increase resistance in mice against Pseudomonas aeruginosa. Intraperitoneal injections of sublethal doses of S. aureus had a protective effect in mice against lethal doses of P. aeruginosa, more so if living and coagulase-p...

journal_title：Canadian journal of microbiology

authors： deRepentigny J,Mathieu LG,Coallier-Ascah J

更新日期：1976-07-01 00:00:00

abstract：:Catalase from Bacillus sp. N2a (BNC) isolated from Antarctic seawater was purified to homogeneity. BNC has a molecular mass of about 230 kDa and is composed of four identical subunits of 56 kDa. The catalase showed optimal activity at 25 degrees C and at a pH range of 6-11. The enzyme could be inhibited by azide, hydr...

journal_title：Canadian journal of microbiology

authors： Wang W,Sun M,Liu W,Zhang B

更新日期：2008-10-01 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：:Ten bacteriophages infecting Micrococcus luteus have been characterized. All phages contain double-stranded DNA, of 64.3--73.5 mol% guanine plus cytosine (GC). The DNA of phage N7 has the highest GC content reported for any bacterial virus. No unusual bases have been found. The intracellular replicating DNAs of six ph...

journal_title：Canadian journal of microbiology

authors： Compton SW,Mayo JA,Ehrlich M,Ackermann HW,Tremblay L,Cords CE,Scaletti JV

更新日期：1979-09-01 00:00:00

abstract：:A transformation protocol mediated by Agrobacterium tumefaciens is described for the sapstaining fungus Ophiostoma piceae. We compared transformants obtained from Agrobacterium with those obtained from yeast-like cells made into spheroplasts and treated with CaCl2. For all putative transformants analyzed, Southern hyb...

journal_title：Canadian journal of microbiology

authors： Tanguay P,Breuil C

更新日期：2003-04-01 00:00:00

abstract：:Probiotics are usually isolated from the gastrointestinal tract of humans and animals. The search of probiotics in human milk is a recent field of research, as the existence of the human milk microbiome was discovered only about a decade ago. To our knowledge, no reports regarding the potential probiotic effect of bac...

journal_title：Canadian journal of microbiology

authors： Quilodrán-Vega SR,Villena J,Valdebenito J,Salas MJ,Parra C,Ruiz A,Kitazawa H,García A

更新日期：2016-06-01 00:00:00

abstract：:Fermentative hydrogen production was carried out by Enterobacter cloacae DM11, using glucose as the substrate. The effects of initial substrate concentration, initial medium pH, and temperature were investigated. Results showed that at an initial glucose concentration of 1.0% (m/v), the molar yield of hydrogen was 3.3...

journal_title：Canadian journal of microbiology

authors： Nath K,Kumar A,Das D

更新日期：2006-06-01 00:00:00

abstract：:The mouse model of intraperitoneal sepsis with Proteus rettgeri was used to evaluate the anti-endotoxic effect of polymyxin B sulfate. An unexpected reversal of the usual protective effect of polymyxin in experimental enterobacterial sepsis was observed in which the lethality of the infection was enhanced. ...

journal_title：Canadian journal of microbiology

authors： Bannatyne RM,Cheung R

更新日期：1980-02-01 00:00:00

abstract：:Fourteen Lactococcus lactis strains showing inhibitory activity against Listeria innocua SICC 4202 were isolated from different French raw milks and raw milk cheeses and screened for bacteriocin production by the triple layer method under conditions that eliminate the effects of lactic acid and hydrogen peroxide. Thre...

journal_title：Canadian journal of microbiology

authors： Ali D,Lacroix C,Thuault D,Bourgeois CM,Simard RE

更新日期：1995-09-01 00:00:00

abstract：:A quantitative and qualitative survey of the indigenous Endogone population in wheat field soil and vesicular-arbuscular mycorrhiza in wheat roots as influenced by season and by the stage of development of the wheat plant was made. The number of Endogone spores in wheat field soil remained relatively unchanged in win...

journal_title：Canadian journal of microbiology

authors： Saif SR,Khan AG

更新日期：1975-07-01 00:00:00

abstract：:Plant secondary metabolites, such as saponins, have a considerable impact in agriculture because of their allelopathic effects. They also affect the growth of soil microorganisms, especially fungi. We investigated the influence of saponins on rhizosphere bacteria in vitro and in soil conditions. The effects of gypsoph...

journal_title：Canadian journal of microbiology

authors： Fons F,Amellal N,Leyval C,Saint-Martin N,Henry M

更新日期：2003-06-01 00:00:00

abstract：:Agricultural practices such as manure applications could contribute to the spread of antibiotic resistance genes (ARGs) within the environment. Our objective was to assess the impact of certain fertilization methods (mineral or manure) and tillage practices (reduced or conventional) on the presence of ARGs and bacteri...

journal_title：Canadian journal of microbiology

authors： Larouche É,Généreux M,Tremblay MÈ,Rhouma M,Gasser MO,Quessy S,Côté C

更新日期：2020-10-01 00:00:00

abstract：:beta-d-Fructofuranosidase (FFase), an important enzyme of the confectionery and fructose syrup industry, is produced by several microorganisms. However, yeasts are the most used source because of their high sucrose fermentation capacity. In this work, production of FFase was carried out in submerged fermentation using...

journal_title：Canadian journal of microbiology

authors： Venkateshwar M,Chaitanya K,Altaf MD,Hameeda B,Ghopal Reddy M

更新日期：2009-04-01 00:00:00

abstract：:Cell-free extracts prepared from the extremely halophilic bacterium Halobacterium saccharovorum oxidize galactose and accumulate a product which reacts as if it were a lactone. The product does not act as a reducing sugar and contains all six of the carbon atoms initially present in galactose. The product was jugged t...

journal_title：Canadian journal of microbiology

authors： Hochstein LI,Dalton BP,Pollock G

更新日期：1976-08-01 00:00:00