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 compared for their siderophore production potential and chemical characteristics. Examination of the chemical nature of the siderophores revealed that all test isolates produced hydroxamate siderophores that were trihydroxamate hexadentates. Wide-spread occurrence of siderophores in marine isolates indicate their functional role in maintaining overall productivity of coastal waters. Among all test aspergilli, marine Aspergillus versicolor was found to be the largest siderophore producer (182.5 microg/mL desferrioxamine mesylate equivalent), least siderophore production was recorded in a marine strain of Aspergillus niger (3.5 microg/mL desferrioxamine mesylate equivalent).
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Vala AK,Dave BP,Dube HCdoi
10.1139/w06-012subject
Has Abstractpub_date
2006-06-01 00:00:00pages
603-7issue
6eissn
0008-4166issn
1480-3275pii
w06-012journal_volume
52pub_type
杂志文章abstract::The anaerobic degradative pathway for metabolism of 2,4,6-trinitrotoluene (TNT) by a consortium of Desulfovibrio spp. isolated from a creek sediment was studied. This consortium has the metabolic capability to degrade TNT to fatty acids. The growth of the consortium and the metabolism of TNT were greatly enhanced in t...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m96-155
更新日期:1996-12-01 00:00:00
abstract::The cultural, morphological, and physiological properties of Thermomonospora fusca (strain 190Th) are described. Its physiological properties show that this species is primarily a carbohydrate-degrading actinomycete which can use a wide range of plant sugars and polymeric carbohydrates as sources of carbon and energy....
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-267
更新日期:1975-11-01 00:00:00
abstract::Microbial mats that develop in shallow brackish and hyposaline ponds in the rims of two French polynesian atolls (Rangiroa and Tetiaroa) were intensively investigated during the past three years. Comparative assessment of these mats (called kopara in polynesian language) showed remarkable similarities in their composi...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:2001-11-01 00:00:00
abstract::Antibiotic susceptibility tests and restriction enzyme analysis (REA) of genomic DNA were performed to characterize the relationship between sources of isolates of yellow-pigmented enterococci. Antibiotic susceptibility tests were conducted with 10 therapeutic antibiotics and 54 isolates grouped by source (wild and ot...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-44-11-1066
更新日期:1998-11-01 00:00:00
abstract::A large pool of antibiotic resistant and auxotrophic mutants was isolated from the Staphylococcus aureus phage group 2 strains UT0002-19 and UT0017 by (1) antibiotic gradient plates, (2) trimethoprim selection, and (3) nitrosoguanidine mutagenesis, which sometimes was coupled by enrichment with either penicillin or me...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m80-161
更新日期:1980-08-01 00:00:00
abstract::To determine the subcellular location of the Streptococcus mutans P1 protein C-terminal anchor, cell envelope fractionation experiments were conducted in combination with Western immunoblotting, using monoclonal antibody MAb 6-8C specific for an epitope that maps near the C terminus of P1 protein and also a polyclonal...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:1999-06-01 00:00:00
abstract::The ability of R-type lipopolysaccharide (LPS), isolated from Neisseria gonorrhoeae colony type 4, to protect against infection with N. gonorrhoea colony type 1 (T1 isolates) in the mouse and chicken embryo was investigated. C57 black mice were immunized intraperitoneally with 50 microgram of LPS, and challenged intra...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-022
更新日期:1978-02-01 00:00:00
abstract::Biological nitrogen fixation (BNF) can be improved by optimizing the interaction between the rhizobial inoculant and pea (Pisum sativum L.), leading to increased productivity and reduced nitrogen (N) fertilizer use. Eight Rhizobium leguminosarum bv. viciae strains were used to inoculate the super-nodulating pea mutant...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2017-0281
更新日期:2017-11-01 00:00:00
abstract::The possibility of using the volatile-producing fungus Muscodor albus for biofumigation against building molds was investigated. Several species of Aspergillus and Penicillium as well as fungi belonging to nine other genera were inhibited or killed in vitro by volatiles produced by potato dextrose agar or rye grain cu...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/W06-124
更新日期:2007-03-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m92-062
更新日期:1992-05-01 00:00:00
abstract::Pathogenic and nonpathogenic isolates of Venturia inaequalis were grown in liquid culture. Hyphae were treated with two types of fimbrial antiserum (AU- and AV-1) and examined by immunofluorescent microscopy, in order to establish the distribution of fimbrial epitopes in whole cell mounts. The AV-1 antiserum was speci...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w00-061
更新日期:2000-09-01 00:00:00
abstract::The search for new antimicrobial compounds involves finding novel sources of chemotherapeutic compounds or manipulating and combining structures from existing molecules. Small antimicrobial peptides (AMPs) are components of innate immune defenses characterized in greatest detail in insect-derived AMPs. We have generat...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w09-001
更新日期:2009-05-01 00:00:00
abstract::Dietary exposure to heavy metals may have detrimental effects on human and animal health, even at low concentrations. Specific probiotic bacteria may have properties that enable them to bind toxins from food and water. We assessed the interaction of probiotic bacteria with cadmium and lead in vitro as an initial scree...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w06-043
更新日期:2006-09-01 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::Candida albicans biofilm formation is considered an important matter because it can lead to strong resistance to conventional antifungal agents. Hyphae formed by C. albicans can also act as an important virulence factor related to its biofilm. The objective of this study was to determine the effect of zerumbone, a mon...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2019-0155
更新日期:2019-10-01 00:00:00
abstract::Humicola lutea 103 is a copper-tolerant fungal strain able to grow in the presence of 300 μg·mL(-1) Cu(2+) under submerged cultivation. To prevent the consequences of copper overload, microorganisms have evolved molecular mechanisms that regulate its uptake, intracellular traffic, storage, and efflux. In spite of this...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w2012-112
更新日期:2012-12-01 00:00:00
abstract::Nitrogenase in Azotobacter chroococcum whole cells was inhibited by enzymically generated superoxide anion (O2-), hydrogen peroxide, and ethyl hydrogen peroxide. The degree of inhibition produced by O2- was related to the quantity of oxygen supplied to the organisms in continuous cultures. O2- also inhibited oxygen up...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m77-228
更新日期:1977-11-01 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::Three strains, Rhodotorula rubra, Rhodotorula glutinis, and Candida zeylanoides, isolated from fish, were tested for the expression of putative tissue colonization factors. All strains were able to bind collagen type I, fibronectin, and laminin to various degrees after growing on various solid and broth media, while t...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m93-171
更新日期:1993-12-01 00:00:00
abstract::The marine sponge Mycale sp., a potential source of natural bioactive products, is widely distributed along the coast of Fujian, China. The cultivable bacterial community associated with Mycale sp., the antibacterial activities, and the PKS (polyketide synthase) and NRPS (nonribosomal peptide synthetase) gene diversit...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2013-0785
更新日期:2014-04-01 00:00:00
abstract::Caulobacters are biofilm-forming members of the natural flora of soil and aquatic environments, which exhibit several characteristics that make them attractive for development of high surface area microbial bioreactors or biosensors. Although caulobacters are well characterized genetically, little is known about their...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:2000-04-01 00:00:00
abstract::Uptake of amino acids by Bacteroides ruminicola was observed in cells grown in a complete defined medium, containing ammonia as the nitrogen source. A high rate of uptake occurred only in fresh medium, as an inhibitory substance, possibly acetate, apparently accumulated during growth. All amino acids except proline we...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-180
更新日期:1979-10-01 00:00:00
abstract::Studies of the molecular biology of human papillomavirus type 16 have been limited by the lack of a tissue culture system that is fully permissive for virus replication; as a result, high-titre stocks of infectious virus are not readily available. Therefore, studies of viral gene expression have relied on analysis of ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m93-016
更新日期:1993-01-01 00:00:00
abstract::A total of 230 strains of metal-tolerant bacteria from water and sediment samples collected in Chesapeake Bay were isolated on a medium containing cobalt, lead, mercury, or molybdenum. In addition, a set of 71 cultures were simultaneously isolated on glucose tryptone yeast extract agar medium without metals. Twenty-th...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m77-212
更新日期:1977-10-01 00:00:00
abstract::In Escherichia coli, the N-terminal domain of the essential protein FtsK (FtsKN) is proposed to modulate septum formation through the formation of dynamic and essential protein interactions with both the Z-ring and late-stage division machinery. Using genomic mutagenesis, complementation analysis, and in vitro pull-do...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2019-0493
更新日期:2020-04-01 00:00:00
abstract::The tuberculin activity of protoplasmic extracts isolated from living BCG was purified successively by gel filtration on Sephadex G-100 and G-75, and by electrophoresis on 7.5% and on gradient (6-18%) polyacrylamide gels. The tuberculin-active fractions, as determined in BCG-sensitized guinea pigs, were used as the st...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-290
更新日期:1975-12-01 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::Approximately 20% of Canada's oil supply now comes from the extraction of bitumen from the oil sands deposits in northeastern Alberta. The oil sands are strip-mined, and the bitumen is typically separated from sand and clays by an alkaline hot water extraction process. The rapidly expanding oil sands industry has mill...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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更新日期:2002-01-01 00:00:00
abstract::Several restriction systems were detected in different strains of Streptomyces antibioticus by using actinophages as biological indicators. Adsorption of phages to the bacteria, together with the study of the efficiency of plating gave an initial indication of restriction in three strains. The alternation of efficienc...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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更新日期:1985-10-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-105
更新日期:1976-05-01 00:00:00