Abstract:
:Deoxyribonuclease (DNase) activity was found in the culture fluids of numerous marine bacteria isolated from seawater. Among these ogranisms, marine bacterium, Vibrio sp., strain No. 2, showed the highest deoxyribonucleic acid-hydrolyzing activity. This organism requires salts of seawater for both growth and extracellular DNase formation. The DNase activity could not be detected in the synthetic seawater culture liquid lacking magnesium ion, and DNase activity decreased in a calcium-deficient medium. The optimum temperature for the growth of this organism was between 15 and 25 degrees C. The formation of extracellular DNase was the greatest at 20 degrees C and less activity was found at 10 and 30 degrees C.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Maeda M,Taga Ndoi
10.1139/m76-213subject
Has Abstractpub_date
1976-10-01 00:00:00pages
1437-42issue
10eissn
0008-4166issn
1480-3275journal_volume
22pub_type
杂志文章abstract::Many studies on quorum quenching focus on the discovery and characterization of novel acyl-homoserine lactonases (AHL-lactonases) because these enzymes could be used in the control of diseases caused by Gram-negative bacteria. The effects of quorum quenching are also remarkable in the performance of bacterial consorti...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2016-0323
更新日期:2017-01-01 00:00:00
abstract::To establish the relevance of the cell wall in metal ion transport, cobalt uptake was examined in Neurospora crassa. Cobalt taken up was largely surface bound (>90%), resulting in a release of calcium and magnesium. Surface-bound cobalt could not enter intracellular locations upon further incubation of mycelia in a me...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w05-096
更新日期:2005-12-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m93-058
更新日期:1993-04-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w99-055
更新日期:1999-08-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-130
更新日期:1979-08-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m80-201
更新日期:1980-10-01 00:00:00
abstract::Wild-type glucose uptake and glucose chemotaxis activities were restored in glucose transport defective Pseudomonas aeruginosa strains PFB360 and PFB362 after introduction of plasmid pPZ129, containing a 1.1-kilobase DNA fragment that is essential for the expression of the P. aeruginosa periplasmic glucose binding pro...
journal_title:Canadian journal of microbiology
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更新日期:1993-11-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2017-0221
更新日期:2017-09-01 00:00:00
abstract::Twenty-six strains of group JK corynebacteria had the same colonial morphology and biological reactions as the biotypes of the biovars of Corynebacterium genitalium and C. pseudogenitalium. Therefore, group JK corynebacteria can be assigned to the biovars of C. genitalium or C. pseudogenitalium. Although the strains d...
journal_title:Canadian journal of microbiology
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doi:10.1139/m84-164
更新日期:1984-08-01 00:00:00
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journal_title:Canadian journal of microbiology
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doi:10.1139/m96-111
更新日期:1996-08-01 00:00:00
abstract::Southern bean mosaic virus (SBMV) protein was cleaved with cyanogen bromide and a highly basic peptide, CB-1, was isolated by ion exclusion and ion-exchange chromatography. Twelve peptides were separated from a tryptic digest of CB-1 by ion-exchange chromatography and the composition of these peptides was similar to t...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m80-241
更新日期:1980-12-01 00:00:00
abstract::Farnesol, a quorum sensing (QS) signal, is produced by Candida albicans during high density growth and has been found to inhibit morphogenesis. This QS auto-inducing signal was discovered to increase amino acid incorporation by C. albicans when concentrations of farnesol increased to 10 microg/mL in yeast nitrogen bro...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w05-050
更新日期:2005-08-01 00:00:00
abstract::The influence of plant growth promoting (PGP) activity of bacterial communities recovered from each of six weed species (barnyard grass (Echinochloa crusfalli (L.) Beauv.), corn spurrey (Spergula arvensis L.), goldenrod (Sonchus sp.), Italian ryegrass (Lolium multiflorum L.), lamb's-quarters (Chenopodium album L.), an...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w01-110
更新日期:2001-11-01 00:00:00
abstract::Microsclerotia of three melanin-deficient mutants of Verticillium dahliae formed malanin from (+)-scytalone, 1,8-dihydroxynaphthalene, catechol, and L-3,4-dihydroxyphenylalanine. The melanins formed from (+)-scytalone or 1,8-dihydroxynaphthalene resembled wild-type melanin chemically and ultrastructurally, whereas the...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-049
更新日期:1978-03-01 00:00:00
abstract::Cloning and transcriptional regulation of the KlFBA1 gene that codes for the class II fructose-1,6-bisphosphate aldolase of the yeast Kluyveromyces lactis are described. KlFBA1 mRNA diminishes transiently during the shift from hypoxic to fully aerobic conditions and increases in the reversal shift. This regulation is ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w04-038
更新日期:2004-08-01 00:00:00
abstract::Plant endophytes are a group of microorganisms that reside asymptomatically within the healthy living tissue. The diversity and molecular and biochemical characterization of industrial hemp-associated endophytes have not been previously studied. This study explored the abundance and diversity of culturable endophytes ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2018-0108
更新日期:2018-10-01 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::In mycetomes of leafhoppers, Helochara communis, ultrastructural and histochemical studies revealed that spheroplast symbiotes (t-symbiotes) were converted to 'a-symbiotes' (so-called), with apparent loss of DNA--a phenomenon reminiscent of rhizobium-bacteroid conversion in certain legume nodules. Additional t-symbiot...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-028
更新日期:1975-02-01 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
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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::Giardia duodenalis is a common intestinal parasite in most parts of the world. In Canada it is associated with both endemic and epidemic infections that are often transmitted by the waterborne route. Although G. duodenalis strains have been isolated from several animals, the role of other mammals in human infection is...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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更新日期:1986-12-01 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
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Using both fluorescent labelled toxin and antibody--secondary antibody techniques, the Bacillus sphaericus toxin was found to bind strongly to susceptible Culex quinquefasciatus cells, but far less strongly to cells of insensitive insects. An insensitive clone of the C. quinquefasciatus cell line was discovered which ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m87-173
更新日期:1987-11-01 00:00:00
abstract::Streptococcus pneumoniae infection starts from the respiratory tract where interaction with host epithelial cells occurs. To gain more insights on pneumococcal pathogenesis, an oligonucleotide (oligo)-based microarray was used to investigate gene expression changes of one serotype 3 encapsulated pathogenic S. pneumoni...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w07-133
更新日期:2008-03-01 00:00:00
abstract::The metabolism of cyclohexanecarboxylic acid by a bacterium, designated PRL W19, follows a pathway involving beta-oxidation of coenzyme A intermediates analogous to the classical oxidation of fatty acids. The organism appears to have the property for the constitutive metabolism of caproic acid, and cell extracts conta...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-141
更新日期:1978-07-01 00:00:00
abstract::The fatty acid pattern in Mycobacterium vaccae strain JOB5 was examined after growth on n-alkanes (C14-C18), 1-alkenes (C14-C18), 2- or 3-methyl octadecane, and 8-heptadecene. It was evident that monoterminal oxidation of n-alkanes was followed by beta-oxidation and that both parent fatty acid and products of beta-oxi...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-012
更新日期:1975-01-01 00:00:00
abstract::Antibiotic-resistant and antimetabolite-resistant mutants of the nitrogen-fixing symbiotic bacterium Frankia were isolated to provide strains with genetic backgrounds amenable to genetic analysis. The lethal and mutagenic effects of ethyl methanesulfonate (EMS) and UV light on four Frankia strains were investigated. U...
journal_title:Canadian journal of microbiology
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m86-167
更新日期:1986-12-01 00:00:00
abstract::The phyllosphere, which supports a large number of microorganisms, represents the interface between the aboveground parts of plants and air. In this study, four nifH clone libraries were constructed from the phyllosphere of Pyrus serotina (L), Vitis vinifera (P), Prunus armeniaca (X), and Prunus avium (Y). Clones rela...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2018-0588
更新日期:2019-09-01 00:00:00
abstract::We report some characteristics of a ruminal bacterium (strain NPOH1) that metabolizes 3-nitropropanol, the toxic principle of various milk vetchs that are distributed worldwide. The gram-positive bacterium was nonmotile and did not produce spores. Growth of strain NPOH1 occurred under anaerobic conditions and was supp...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m97-088
更新日期:1997-07-01 00:00:00