Abstract：
:The fine structure of conidia and immature resting spores of the entomogenous fungus Entomophthora apiculata is described. The two cell types contain comparable organelles and quantities of lipid, and possess a similar cell wall structure. The large quantity of stored lipid and numerous mitochondria in each cell type indicate a capacity for great metabolic activity. Numerous dense, microbody-like organelles were observed in conidia and resting spores, and their possible functions are discussed. Third instar larvae of the cabbage looper Trichopulsia ni were exposed to conidia of E. apiculata. Fungal germ tube formation and penetration of the host integument were observed. The germ tubes did not form appressoria and appeared to penetrate the epicuticle by enzymatic and physical means. After penetration of the epicuticle the germ tube often bifurcates, and expands as two or more digit-like projections parallel to the lamellae of the exocuticle. The hyphae gradually extend inward, cleaving the lamellae of cuticle, and eventually enter the host's body cavity.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Lambiase JT,Yendol WGdoi
10.1139/m77-067subject
Has Abstractpub_date
1977-04-01 00:00:00pages
452-64issue
4eissn
0008-4166issn
1480-3275journal_volume
23pub_type
杂志文章abstract：:The altitudinal distribution of microfungi associated with Betula ermanii Cham. leaf litter was investigated on Mt. Rishiri (1719 m), northern Japan. Fallen leaves were collected at five sites of different altitudes (approximately 300, 600, 900, 1200, and 1500 m above sea level) along a transect on the northern slope ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w09-030
更新日期：2009-07-01 00:00:00
abstract：:Highly distinctive aspects of the exponentail-phase Rhizobium japonicum cell were disclosed by means of thin sections, freeze etching, fluorescent antibodies, and ruthenium red staining. Polarity was expressed in the form of reserve polymer distribution near one end of the cell and as cytoplasmic localization near the...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m77-191
更新日期：1977-09-01 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 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
pub_type： 杂志文章
doi：10.1139/w98-224
更新日期：1999-03-01 00:00:00
abstract：:Antagonistic activity of the bacterium Pseudomonas cepacia against Trichoderma viride was greatly influenced by nutritional and environmental conditions. Xylose and trehalose strongly enhanced the antifungal activity of P. cepacia, whereas mannitol and glucose had little effect. The carbon sources that enhanced the an...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m91-152
更新日期：1991-11-01 00:00:00
abstract：:The effects of seven thiophosphorus pesticides and their degradation products on estuarine ammonium oxidizers were examined. Using an axenic, closed-culture, high cell density assay, the pesticides caused little inhibition of ammonium oxidation. However, the degradation product of methyl parathion, p-aminophenol, sign...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m80-216
更新日期：1980-11-01 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：: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
pub_type： 杂志文章
doi：
更新日期：2000-08-01 00:00:00
abstract：:Three composts (Ball, dairy, and greenhouse) were tested for the ability to suppress the development of Fusarium root and stem rot (caused by Fusarium oxysporum f. sp. radicis-cucumerinum) on greenhouse cucumber. Dairy and greenhouse composts significantly reduced disease severity (P = 0.05), while Ball compost had no...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w10-076
更新日期：2010-11-01 00:00:00
abstract：:An Escherichia coli K-12 biofilm was grown at a dilution rate of 0.028 h(-1) for 48 h in a glucose-limited chemostat coupled to a modified Robbins' device to determine its susceptibility to infection by bacteriophage T4. Bacteriophage T4 at a multiplicity of infection (MOI) of 10 caused a log reduction in biofilm dens...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：
更新日期：2001-07-01 00:00:00
abstract：:A simplified procedure is presented for releasing and concentrating indigenous microbial cells from soil for viewing by transmission electron microscopy as thin sections or replicas of frozen-etched preparations. This procedure is compared with two others reported earlier, and their relative merits are discussed as co...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m75-036
更新日期：1975-03-01 00:00:00
abstract：:From electron-microscopical observations, a decreased metabolic activity in 3-day-old Candida albicans chlamydospores was suggested, and progressive deterioration in chlamydospores aged 2-8 months was shown. Oxygen utilization by chlamydospore-pseudomycelium (CSP) preparations was less than that by yeast, while 3-day-...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m79-111
更新日期：1979-06-01 00:00:00
abstract：:Mice immunized subcutaneously with 10(6) viable yeast cells of Histoplasma capsulatum exhibited host protection to a challenge infection and also exhibited concomitant manifestations of cellular immunity to a culture filtrate antigen (yeast extract dialysate (YED)-histoplasmin). Protective immunity was determined by q...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m83-016
更新日期：1983-01-01 00:00:00
abstract：:In an effort to reduce human exposure to adenoviruses through drinking water, we determined the effectiveness of sequential disinfection with an alternative ultraviolet (UV) technology (medium-pressure (MP) UV) and monochloramine. The results of this study showed that MP UV was much more effective than traditional UV ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w10-047
更新日期：2010-07-01 00:00:00
abstract：:Repetitive element-polymerase chain reaction (REP-PCR) DNA fingerprinting and library-based microbial source tracking (MST) methods were utilized to investigate the potential sources of Escherichia coli pollution in recreational waters of southeastern Lake Huron. In addition to traditional sources such as humans, agri...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w08-123
更新日期：2009-03-01 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
pub_type： 杂志文章
doi：10.1139/m97-154
更新日期：1997-11-01 00:00:00
abstract：:The sensitivity of delta red-gam delta ren mutants of bacteriophage lambda to Rex exclusion by lambda rexA+ rexB+ lysogens is modulated by the prophage cI repressor allele. We show the following: (i) lambda spi156 delta nin5 forms plaques on a cI+-rexA+-rexB+ lysogen with 10(5)-fold higher efficiency than on cI[Ts]-re...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w03-021
更新日期：2003-03-01 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
pub_type： 杂志文章
doi：10.1139/w00-082
更新日期：2000-11-01 00:00:00
abstract：:Influenza undergoes extensive antigenic variation in nature. These new antigenic variants invariably supplant the preceding antigenic type that then disappears. In apparent contrast to this, two H3N2 strains that were forwarded to the Laboratory Centre for Disease Control, Ottawa, in 1984 from a Canadian public health...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m87-139
更新日期：1987-09-01 00:00:00
abstract：:The presence and taxonomy of endophytic bacteria of the entire aerial parts of crocus (Crocus albiflorus), a wildflower native in the Alps, were investigated. A combination of plating of plant macerates, isolation and sequence identification of isolates, and direct 16S rDNA PCR amplification followed by whole-communit...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w05-109
更新日期：2006-02-01 00:00:00
abstract：:The shikimate metabolites are key precursors to a large number of natural products, including aromatic amino acids. Chorismic acid is an important branch point in the biosynthetic pathway to aromatic amino acids. Chorismic acid is also unique among natural products since it is the only compound known to undergo an enz...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m91-043
更新日期：1991-04-01 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
pub_type： 杂志文章
doi：
更新日期：1976-07-01 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：:We have previously reported that the lethal toxicity of 5-fluorouracil (5-FU) in specific-pathogen-free mice is due to an indigenous infection with Escherichia coli (K. Nomoto, T. Yokokura, Y. Yoshikai, et al. Can. J. Microbiol. 37:244-247, 1991). In the present study, we demonstrate that nonspecific immunostimulation...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m92-126
更新日期：1992-08-01 00:00:00
abstract：:Fecal coliforms (FC) counts were compared with Escherichia coli counts in differently contaminated freshwater samples (n = 166). FC were enumerated by plate count on triphenyl 2,3,5-tetrazolium chloride Tergitol medium. Escherichia coli were enumerated by the most probable number microplate method based on the detecti...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/W07-033
更新日期：2007-06-01 00:00:00
abstract：:The multi-drug resistant pathogen Acinetobacter baumannii displays unusual control of its SOS mutagenesis genes, as it does not encode a LexA repressor, but instead employs the UmuDAb repressor and a small DdrR protein that is uniquely found in Acinetobacter species. We used bacterial adenylate cyclase t...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2020-0219
更新日期：2020-11-12 00:00:00
abstract：:The use of two pulsed lasers as excitation sources in the immunofluorescent technique FTA-ABS (fluorescent treponemal antibody absorption) shows that excitation of specimens by continuous or long-duration pulses of light (in the order of a millisecond) degrades the fluorescence in such a way that it is impossible to q...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：
更新日期：1975-08-01 00:00:00
abstract：:A nystatin-resistant mutant of Aspergillus niger is described that has quantitative changes in phospholipid composition compared with the wild type. The proportion of linoleic acid in total phospholipids was elevated in the mutant from 38 to 56% and the proportion of oleic acid was lowered from 28 to 12%. Amino acid t...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m90-076
更新日期：1990-06-01 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：:Citrobacter freundii from an environmental source displayed resistance to a wide variety of antibacterials. Some of these resistances could be transferred by conjugation with frequencies as high as 10(-2). The complexity of plasmid involvement in the antibacterial resistance of this species was demonstrated by isolati...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m81-052
更新日期：1981-03-01 00:00:00
