Canadian Journal of Microbiology

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Enhancing plant productivity while suppressing biofilm growth in a windowfarm system using beneficial bacteria and ultraviolet irradiation
Canadian Journal of Microbiology - Tập 61 Số 7 - Trang 457-466 - 2015
Seungjun Lee, Chongtao Ge, Zuzana Bohrerova, Parwinder S. Grewal, Jiyoung Lee
Common problems in a windowfarm system (a vertical and indoor hydroponic system) are phytopathogen infections in plants and excessive buildup of biofilms. The objectives of this study were (i) to promote plant health by making plants more resistant to infection by using beneficial biosurfactant-producing Pseudomonas chlororaphis around the roots and (ii) to minimize biofilm buildup by ult...... hiện toàn bộ
Ultrastructural changes ofSaccharomyces cerevisiaein response to ethanol stress
Canadian Journal of Microbiology - Tập 59 Số 9 - Trang 589-597 - 2013
Manli Ma, Pei Han, Ruimin Zhang, Hao Li
In the fermentative process using Saccharomyces cerevisiae to produce bioethanol, the performance of cells is often compromised by the accumulation of ethanol. However, the mechanism of how S. cerevisiae responds against ethanol stress remains elusive. In the current study, S. cerevisiae cells were cultured in YPD (yeast extract – peptone – dextrose) medium containing various concentration...... hiện toàn bộ
Phaseolus vulgaris is nodulated in northern Spain by Rhizobium leguminosarum strains harboring two nodC alleles present in American Rhizobium etli strains: biogeographical and evolutionary implications
Canadian Journal of Microbiology - Tập 56 Số 8 - Trang 657-666 - 2010
Paula García‐Fraile, Daniel Mulas-García, Álvaro Péix, Raúl Rivas, Fernando González‐Andrés, Encarna Velázquez
In this study a collection of rhizobial strains were isolated from effective nodules of Phaseolus vulgaris in a wide region of northern Spain, which is the major producer region of this legume in Spain. The analysis of their core genes, rrs, atpD, and recA, and the 16S–23S intergenic spacer showed that all isolates belong to the phylogenetic group of Rhizobium leguminosarum and some of th...... hiện toàn bộ
Phenotypic, genotypic, and symbiotic diversities in strains nodulating clover in different soils in Spain
Canadian Journal of Microbiology - Tập 55 Số 10 - Trang 1207-1216 - 2009
Martha-Helena Ramírez-Bahena, Encarna Velázquez, Félix Fernández-Santos, Álvaro Péix, Eustoquio Martínez‐Molina, Pedro F. Mateos
Trifolium species are the most common legumes present in wild Spanish soils; however, there are no studies to date on the diversity of rhizobia nodulating clover in Spain. Twenty strains from different Spanish soils with acidic, neutral, and basic pH were selected to study their genotypic, phenotypic, and symbiotic features. The results showed that the isolates were genotypically diverse,...... hiện toàn bộ
An improved selective and diagnostic medium for the isolation and enumeration of Bacillus cereus in foods
Canadian Journal of Microbiology - Tập 26 Số 7 - Trang 753-759 - 1980
R. Holbrook, J.M. Anderson
The use and performance of an improved diagnostic and selective medium, PEMBA (polymyxin pyruvate egg yolk mannitol bromothymol blue agar), for the detection of Bacillus cereus in foods is described. The distinct colonial appearance of B. cereus on PEMBA permitted the recognition of both strains: those that do precipitate egg yolk and those that do not react with egg yolk. A staining proc...... hiện toàn bộ
Penetration into caterpillar cells of virus-like particles injected during oviposition by parasitoid ichneumonid wasps
Canadian Journal of Microbiology - Tập 25 Số 2 - Trang 207-216 - 1979
Donald B. Stoltz, S. Bradleigh Vinson
Particles originating from the ovarial calyx epithelium of two different species of ichneumonid wasp are injected into host caterpillars during oviposition. At [Formula: see text] post oviposition, many calyx fluid particles are either associated with or have penetrated through the basement membranes surrounding various tissues. Shortly thereafter, apparently intact particle nucleocapsids...... hiện toàn bộ
Purification and partial amino acid sequence of thuricin S, a new anti-Listeriabacteriocin from Bacillus thuringiensis
Canadian Journal of Microbiology - Tập 53 Số 2 - Trang 284-290 - 2007
Sonia Chehimi, D. François, Sophie Sablé, Mohamed-Rabeh Hajlaoui, Alain Van Dorsselaer, Férid Limam, Anne‐Marie Pons
We report the isolation and characterization of a new bacteriocin, thuricin S, produced by the Bacillus thuringiensis subsp. entomocidus HD198 strain. This antibacterial activity is sensitive to proteinase K, is heat-stable, and is stable at a variety of pH values (3–10.5). The monoisotopic mass of thuricin S purified by high perfomance liquid chromatography, as determined with mass spectr...... hiện toàn bộ
Heterologous expression of two trichothecene P450 genes inFusarium verticillioides
Canadian Journal of Microbiology - Tập 52 Số 3 - Trang 220-226 - 2006
Susan P. McCormick, Nancy J. Alexander, Robert H. Proctor
Fusarium graminearum Z-3639 and F. sporotrichioides NRRL3299 produce the trichothecene mycotoxins 15-acetyldeoxynivalenol and T-2 toxin, respectively. These toxins differ in oxygenation at C-4, C-7, and C-8. In F. sporotrichioides, Tri1 (FsTri1) controls C-8 hydroxylation. To determine the function of an apparent F. graminearum Tri1 (FgTri1) homolog, both FsTri1 and FgTri1 genes were heter...... hiện toàn bộ
A defined growth medium for the production of chloroperoxidase by Caldariomyces fumago
Canadian Journal of Microbiology - Tập 27 Số 12 - Trang 1298-1305 - 1981
Michael A. Pickard
Ten strains of Caldariomyces fumago and related fungi were found to produce extracellular chloroperoxidase when grown on a glucose – malt extract medium. High enzyme levels and pigment production were observed for C. fumago ATCC 16373 and C. fumago CMI 89362. Removal of malt extract from the medium and the replacement of glucose by fructose as the carbon source provided a defined medium w...... hiện toàn bộ
Copper stress and filamentous fungusHumicola lutea103 — ultrastructural changes and activities of key metabolic enzymes
Canadian Journal of Microbiology - Tập 58 Số 12 - Trang 1335-1343 - 2012
Ekaterina Ts. Krumova, Stoyanka Stoitsova, Tsvetelina Paunova‐Krasteva, Svetlana B. Pashova, Maria Angelova
Humicola lutea 103 is a copper-tolerant fungal strain able to grow in the presence of 300 μg·mL–1Cu2+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 avoidance strategy, high heavy-metal...... hiện toàn bộ
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