Abstract:
:Nonmotile and motility-altered mutants of Myxococcus xanthus have been obtained by the use of chemical mutagens, ultraviolet irradiation, and a procedure for selective spontaneous mutants. As judged by their behaviour on a variety of growth media, in both plate and slide culture, the mutants were divided into four groups. One group contains mutants which are truly nonmotile. Myxococcus xanthus NM, previously described as a nonmotile mutant, may be similar to type 3 mutants (described in text).
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
MacRae TH,McCurdy HDdoi
10.1139/m76-190subject
Has Abstractpub_date
1976-09-01 00:00:00pages
1282-92issue
9eissn
0008-4166issn
1480-3275journal_volume
22pub_type
杂志文章abstract::Morphological differentiation has commanded attention for its putative impact on the pathogenesis of invasive fungal infections. We evaluated in vitro and in vivo the dimorphism from mycelial to yeast-phase of Sporothrix schenckii, Blastomyces dermatitidis and Paracoccidioides brasiliensis isolates, two strains for ea...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w04-026
更新日期:2004-06-01 00:00:00
abstract::Fermentation properties under the control of multiple genes are difficult to alter with traditional methods in Saccharomyces cerevisiae. Here, a novel genome engineering approach is developed to improve ethanol production in very high gravity fermentation with 300 g/L glucose as the carbon source. This strategy involv...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w10-032
更新日期:2010-06-01 00:00:00
abstract::Like recF and recQ mutants studied earlier, two other classes of Escherichia coli mutants defective in the RecF conjugal recombination pathway, recJ and recO, were found to be partially resistant to thymineless death. In contrast, a recN mutant, also belonging to the pathway, was indistinguishable from the wild type w...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m88-157
更新日期:1988-07-01 00:00:00
abstract::Nodulation of Pisum sativum cv. Afghanistan by Rhizobium leguminosarum strain Tom can be blocked by the nonnodulating R. leguminosarum strain PF2. This system was used to study the dynamics of rhizobial binding to seedling root surfaces. Appreciable numbers of 35S-labeled rhizobia bound to the root surface within 2h a...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m80-099
更新日期:1980-04-01 00:00:00
abstract::The purpose of this study was to determine the prevalence of antibiotic-resistant bacteria and endotoxin in soil after land application of biosolids. Soil was collected over a 15 month period following land application of biosolids, and antibiotic resistance was ascertained using clinically relevant antibiotic concent...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/W07-021
更新日期:2007-05-01 00:00:00
abstract::Penicillium chrysogenum F1 is very efficient in bioleaching heavy metals from the soil and is used for that purpose. We found that F1 can extract 19.8 mg Cd, Cu, Pb, and Zn from 2.5 g soil; the total heavy metals' bioleaching ratio was 60.4%. In this study, the bioleaching mechanism was investigated by means of metabo...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2018-0624
更新日期:2019-09-01 00:00:00
abstract::A mesophilic anaerobe, a member of the Bacteroidaceae family (NRC2248), isolated from a cellulose-enrichment culture, digested untreated Whatman cellulose powder and HCl-treated cotton battings while producing hydrogen, carbon dioxide, cellobiose, glucose, and acetic acid as the sole volatile acid. This organism also ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-222
更新日期:1979-12-01 00:00:00
abstract::The presence of subtilase-cytotoxin-encoding genes was determined in 397 environmental Escherichia coli strains isolated from water, suspended solids, and sediments sampled from different hydrological and environmental conditions in a California estuary. A total of 7 strains (1.76%) were found to harbor subtilase-cyto...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2012-0606
更新日期:2013-06-01 00:00:00
abstract::Arsenic hyperaccumulator fern Pteris vittata L. produces large amounts of root exudates that are hypothesized to solubilize arsenic and maintain a unique rhizosphere microbial community. Total heterotrophic counts on rich or defined media supplemented with up to 400 mmol/L of arsenate showed a diverse arsenate-resista...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w10-005
更新日期:2010-03-01 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
pub_type: 杂志文章
doi:
更新日期:1999-07-01 00:00:00
abstract::A polygalacturonase was isolated from the culture medium of Sclerotinia borealis, a psychrophilic fungus that grows on lawn and wheat seedling under the snow in winter and induces the snow mold disease. Pectic acid was a better substrate of this enzyme than pectin when the activity was determined by measuring the redu...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m97-059
更新日期:1997-05-01 00:00:00
abstract::Candida tropicalis synthesizes a hydroxylase (3 to 5 nmol of product formed per minute per milligram of protein) and a cytochrome P-450 (0.10 to 0.13 nmol per milligram of protein) during growth on n-tetradecane. A three- to four-fold increase in the level of NADPH cytochrome c reductase is also observed in those cell...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-031
更新日期:1979-02-01 00:00:00
abstract::High resolution two-dimensional PAGE was used to analyse protein variation among serotype 1 poliovirus isolates. Viruses isolated from patients with recent histories of vaccination with live attenuated poliovirus were compared with prototype serotype 1 poliovaccine. The nonvaccine Mahoney and Brunenders strains of ser...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m88-136
更新日期:1988-06-01 00:00:00
abstract::A method to obtain synchronous sporulation during idiophase development in liquid surface cultures of Rhizopus arrhizus Fischer in described and evaluated for use in studying metabolism associated with asexual sporulation. In this system growth and sporulation are effectively separated. The respiratory pattern indicat...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m77-151
更新日期:1977-08-01 00:00:00
abstract::Actinomycetes DNAs were digested with restriction enzymes to study the presence of methylated bases. Analysis showed that the enterobacterial Dam and Dcm systems are absent. Methylation at the internal cytosine in CCGG sequences, typical of eukaryotes, was also absent. We also tested 18 restriction endonucleases recog...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m96-031
更新日期:1996-02-01 00:00:00
abstract::Urinary tract infections are common. Few published studies have demonstrated the change in Escherichia coli urinary isolate antimicrobial susceptibility over time within a given area and (or) population. The purpose of this study was to evaluate the change in susceptibility of E. coli clinical isolates obtained from u...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w2012-001
更新日期:2012-03-01 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
pub_type: 杂志文章
doi:10.1139/cjm-2019-0343
更新日期:2020-10-01 00:00:00
abstract::Treponema denticola and Treponema vincentii were cultured in a medium supplemented with either 0.2 or 0.4% (w/v) alpha globulin in place of serum. The active factor(s) in alpha globulin was stable at pH 7.0 to autoclaving and was nondialyzable. Extraction of lipids from alpha globulin showed that both protein and lipi...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m82-051
更新日期:1982-03-01 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
pub_type: 杂志文章
doi:10.1139/m95-114
更新日期:1995-09-01 00:00:00
abstract::The catabolism of glucose by Streptomyces C5, a producer of anthracycline antibiotics, was investigated to determine the pathways that supply precursors for anthracycline biosynthesis. Carbons for the biosynthesis of epsilon-rhodomycinone, an anthracycline aglycone, from radiolabelled glucose were derived primarily fr...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m88-217
更新日期:1988-11-01 00:00:00
abstract::Cultures of Sclerotium rolfsii and Trichoderma viride together in autoclaved soil were assayed at intervals during 8 days of incubation for proteolytic activity (PA) of T. viride. Significant proteolytic activity was detected only in soil containing T. viride (i.e., T. viride alone or S. rolfsii + T. viride); greatest...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-079
更新日期:1978-04-01 00:00:00
abstract::5-Methoxymethyl-2'-deoxyuridine (MMUdR), a drug with potent antiviral activity in vitro against Herpes simplex virus, was investigated for its immunosuppressive effects. Doses as high as 2000mg/kg given daily for 9 days were not immunosupporessive as judged by the fact that treated animals produced normal immune respo...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m77-158
更新日期:1977-08-01 00:00:00
abstract::Three isolates, a Pseudomonas sp., Bacillus sp., and Arthrobacter sp., which had been isolated from a meadow soil at Devon Island, Canada, were subjected to freezing and thawing at low rates under various conditions. When cells were frozen in sand or soil, survival was dependent on moisture level, storage time, and th...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-236
更新日期:1978-12-01 00:00:00
abstract::Trace gas uptake by microorganisms controls the oxidative capacity of the troposphere, but little is known about how this important function is affected by changes in soil microbial diversity. This article bridges that knowledge gap by examining the response of the microbial community-level physiological profiles (CLP...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2019-0412
更新日期:2020-04-01 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
pub_type: 杂志文章
doi:10.1139/cjm-2015-0811
更新日期:2016-06-01 00:00:00
abstract::A tryptophan auxotroph of aerobically grown Rodospirillum rubrum was isolated after mutagenesis and replica plating. The mutant grows on tryptophan or indole, accumulates indole glycerol phosphate, lacks the capacity to convert indole glycerol phosphate to indole glycerol phosphate to indole, and finally is defective ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-055
更新日期:1978-03-01 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
pub_type: 杂志文章
doi:10.1139/w04-099
更新日期:2004-12-01 00:00:00
abstract::Vaccination is the most promising strategy to reduce the incidence of pneumococcal infection. Although there are vaccines available, all of them are based on polysaccharide antigens (conjugated or not). In addition to their high cost, those vaccines do not cover all serotypes. To overcome these hindrances, we evaluate...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w2012-083
更新日期:2012-09-01 00:00:00
abstract::Through genomic analysis of mucosa-associated Escherichia coli strains, we found a close genetic association among isolates from pediatric inflammatory bowel disease (IBD) patients. A specific E. coli pathovar, adherent-invasive E. coli (AIEC), was found in Crohn's disease (CD) adult patients - this pathovar has enhan...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w2012-007
更新日期:2012-04-01 00:00:00
abstract::A high molecular component of a saline extract derived from Listeria monocytogenes contained amino acids, carbohydrates, and phosphorus. The same fraction was capable of promoting both the in vitro mitogenic and adjuvant activities and the in vivo immunosuppressive activity displayed by the crude extract. The material...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m82-204
更新日期:1982-12-01 00:00:00