Abstract：
:The effect of mechanical wounding or foliar diseases caused by Sclerotinia homoeocarpa or Rhizoctonia solani on the epiphytic yeast communities on creeping bentgrass and tall fescue were determined by leaf washing and dilution plating. Total yeast communities on healthy bentgrass and tall fescue leaves ranged from 7.9 x 103 to 1.4 x 105 CFU.cm-2 and from 2.4 x 103 to 1.6 x 104 CFU.cm-2, respectively. Mechanically wounded leaves (1 of 2 trials) and leaves with disease lesions (11 of 12 trials) supported significantly larger communities of phylloplane yeasts. Total yeast communities on S. homoeocarpa infected or R. solani infected bentgrass leaves were 3.6-10.2 times and 6.2-6.4 times larger, respectively, than the communities on healthy leaves. In general, healthy and diseased bentgrass leaves supported larger yeast communities than healthy or diseased tall fescue leaves. We categorized the majority of yeasts as white-pigmented species, including Cryptococcus laurentii, Cryptococcus flavus, Pseudozyma antarctica, Pseudozyma aphidis, and Pseudozyma parantarctica. The percentage of pink yeasts in the total yeast community ranged from 2.6% to 9.9% on healthy leaves and increased to 32.0%-44.7% on S. homoeocarpa infected leaves. Pink-pigmented yeasts included Rhodotorula glutinis, Rhodotorula mucilaginosa, Sakaguchia dacryoidea, and Sporidiobolus pararoseus. Foliar disease significantly affected community size and composition of epiphytic yeasts on bentgrass and tall fescue.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Allen TW,Quayyum HA,Burpee LL,Buck JWdoi
10.1139/w04-073subject
Has Abstractpub_date
2004-10-01 00:00:00pages
853-60issue
10eissn
0008-4166issn
1480-3275pii
w04-073journal_volume
50pub_type
杂志文章abstract：:Human astrovirus (HAstV) was an important cause of viral gastroenteritis in infants in Wuhan city based on our previous study. The aim of the study was to investigate the nature of HAstV infection in Wuhan, People's Republic of China, especially in adults. Stool specimens were collected from 361 children and 301 adult...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w11-085
更新日期：2011-11-01 00:00:00
abstract：:Escherichia coli B and E. aurescens, Shigella alkalescens, and Proteus vulgaris et P. morganii tryptophanases (TPases) were studied for the spectral forms of the enzyme. The pH effect on the absorption spectrum and on the enzyme specific activity revealed that the coli group TPases are identical with but differ from P...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：
更新日期：1975-06-01 00:00:00
abstract：:Histological examination of oesophagus and stomach specimens from 28 guinea pigs (Cavia porcellus) revealed microbes associated with the epithelial surface of these organs. Layers of Gram-positive cocci were associated with oesophageal tissue in all the animals. Yeasts (Torulop-sid pintolopesii) were associated with s...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m78-182
更新日期：1978-09-01 00:00:00
abstract：:Five strains of Haemophilus pleuropneumoniae, out of eight strains tested, produced extracellular haemolysin(s) when grown in liquid culture in the presence, but not in the absence, of RNA. The haemolysin produced by the neotype strain was unstable, heat labile, and sensitive to degradation by pronase, trypsin, and ch...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m85-085
更新日期：1985-05-01 00:00:00
abstract：:An active in vitro protein-synthesizing system has been developed from Rhodospirillum rubrum grown under either photosynthetic or heterotrophic conditions. A protease activity has been found in both of these systems, and this activity can be readily inactivated by treating the cells with KCl and phenylmethyl sulfonylf...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m76-042
更新日期：1976-02-01 00:00:00
abstract：:A test is described for selective inhibition of Mycobacterium tuberculosis and M. bovis isolates in fluid medium. The method employs rho-nitro-alpha-acetyl-amino-beta-hydroxy-propiophenone (NAP) as an inhibitory agent for differentiation of mammalian tuberculosis strains from other Mycobacteria. ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m78-124
更新日期：1978-06-01 00:00:00
abstract：:Bacteria associated with 6 habitats of groundnut were evaluated for their broad-spectrum antifungal activity and suppression of collar rot (Aspergillus niger) of groundnut. Three hundred and ninety-three strains were tested against 8 fungal pathogens of groundnut including 5 necrotrophic fungi, Aspergillus flavus, A. ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w04-119
更新日期：2005-02-01 00:00:00
abstract：:The goal of this study was to evaluate the antibiofilm and antimicrobial activities of Bacoside A, a formulation of phytochemicals from Bacopa monnieri, against Staphylococcus aureus and Pseudomonas aeruginosa, which are known to form biofilms as one of their virulence traits. The antimicrobial effects of Bacoside A w...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2016-0365
更新日期：2017-02-01 00:00:00
abstract：:Natural populations of bacteria assoiciated with the slime on submerged surfaces in a mountain stream were examined by phase-contrast and electron microscopy. The slime contained large numbers of bacteria which were predominantly gram-negative as determined by their cell wall structure. Examination of the in situ dist...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m77-249
更新日期：1977-12-01 00:00:00
abstract：:Porcine epidemic diarrhea virus (PEDV) causes severe infectious diseases in all ages of swine and leads to serious economic losses. Serologic tests are widely accepted and used to detect anti-PEDV antibodies that could indicate PEDV infection or vaccination. In this study, PEDV recombinant S1 protein (rS1) was express...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2018-0240
更新日期：2019-05-01 00:00:00
abstract：:The origin of the eukaryotic nucleus is difficult to reconstruct. While eukaryotic organelles (chloroplast, mitochondrion) are eubacterial endosymbionts, the source of nuclear genes has been obscured by multiple nucleotide substitutions. Using evolutionary parsimony, a newly developed rate-invariant treeing algorithm,...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m89-017
更新日期：1989-01-01 00:00:00
abstract：:Diversity of actinomycetes and their antifungal activities against some plant pathogenic fungi were examined in various vegetative soils from 14 different sites in the western part of Korea. Actinomycete counts ranged from 1.17 x 10(6) to 4.20 x 10(6) cfu x g(-1) dried soil. A total of 1510 actinomycetes were isolated...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w02-025
更新日期：2002-05-01 00:00:00
abstract：:The diversity and variation of total and active ammonia-oxidizing bacteria in a full-scale aerated submerged biofilm reactor for drinking water pretreatment were characterized by clone libraries and denaturing gradient gel electrophoresis (DGGE) analysis of 16S rRNA and its gene during a whole year. Sequences obtained...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w08-011
更新日期：2008-05-01 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
pub_type： 杂志文章
doi：10.1139/w99-006
更新日期：1999-04-01 00:00:00
abstract：:A commercially available single-bottle blood culture system was evaluated at Ben Taub General Hospital, a Harris County District Hospital. Blood cultures from 1010 patients were examined with the Lederle Diagnostics one-bottle blood culture medium-SPS, Columbia broth (E-Vac, Pfizer), and an in-house-prepared brain hea...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m77-155
更新日期：1977-08-01 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：: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：:The peptidoglycan of Escherichia coli K-12 strain AB264 was isolated by treating whole cells with sodium dodecyl sulfate and was purified by deoxyribonuclease, ribonuclease, and trypsin treatment. Like the peptidoglycan of Bacillus subtilis, this peptidoglycan proved able to bind substantial amounts of metallic ions f...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m84-031
更新日期：1984-02-01 00:00:00
abstract：:Shiga toxins produced by Escherichia coli O157:H7 cause a wide spectrum of enteric diseases, such as lethal hemorrhagic colitis and hemolytic uremic syndrome. In this study, the B subunit protein of Shiga toxin type 1 (Stx1) was produced in the E. coli system, was further purified by Ni-column Affinity Chromatography ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/W10-087
更新日期：2010-12-01 00:00:00
abstract：:Cultured alveolar and peritoneal macrophages obtained from normal and immunized rabbits were used to induce wall-defective microbial variants of Pseudomonas pseudomallei. Variants were iduced only by normal alveolar macrophages. The variants reverted to typical Pseudomonas forms either spontaneously or upon transfer i...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m75-303
更新日期：1975-12-01 00:00:00
abstract：:Halobacterium halobium contains two gas vacuole protein genes that are located in plasmid pHH1 (p-vac) and in the chromosomal DNA (c-vac). The mutation frequency for these genes is different: the constitutively expressed p-vac gene is mutated with a frequency of 10(-2), while the chromosomal gene expressed in the stat...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m89-015
更新日期：1989-01-01 00:00:00
abstract：:This study aimed to examine aminoglycosides (AMGs) resistance mechanisms, including the AMG-modifying enzyme genes, mexXY, rplY, nuoG, and galU, in the Pseudomonas aeruginosa non-cystic fibrosis (CF) isolates in Thailand. One hundred P. aeruginosa isolates from non-CF patients were examined for susceptibility to AMGs ...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2012-0465
更新日期：2013-01-01 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：:The ruminal microbiota plays major roles in feed digestion. The composition and fermentation of the bacterial communities in 3 important ruminant species have been studied previously. Here, we extended this research to the effect of concentrate-to-forage ratios on ruminal bacterial communities in Tarim red deer (Cervu...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/cjm-2018-0046
更新日期：2018-07-01 00:00:00
abstract：:Ten aspergilli (five each from marine and terrestrial habitats) were screened for siderophore production. All test isolates produced siderophores as indicated by a positive reaction in the FeCl(3) test, chrome azurol sulphonate assay, and chrome azurol sulphonate agar plate test. Further, the test isolates were compar...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/w06-012
更新日期：2006-06-01 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
pub_type： 杂志文章
doi：10.1139/m76-174
更新日期：1976-08-01 00:00:00
abstract：:The types of bacteria and fungi present in the air of a municipal solid waste recovery system have been characterized and the population densities estimated. Conventional methods were successful in enumerating coagulase-positive staphylococci, Klebsiella spp., gram-negative bacteria, fungi, and common indicator organi...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m85-038
更新日期：1985-03-01 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 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
pub_type： 杂志文章
doi：
更新日期：1999-12-01 00:00:00
abstract：:We studied the persistence of naturally acquired cell-mediated immunity to rubella during early pregnancy. We compared lymphocyte transformation responses to phytohemagglutinin and rubella virus in 35 naturally immune women aged 17-37 years, in the first trimester of pregnancy, with 49 naturally immune age-matched non...
journal_title：Canadian journal of microbiology
pub_type： 杂志文章
doi：10.1139/m83-257
更新日期：1983-12-01 00:00:00
