Abstract:
:Frequency of heterocytes and nitrogenase activity (NA) under light and dark cultivation conditions was determined in 12 cyanobacterial strains isolated from various soil habitats. In spite of a high variability, significant differences in NA among the strains were found in response of light and dark cultivation. Relatively high NA (9.9-15.3 micromol/h C2H4 per g fresh mass) under light conditions and basal NA after 12 h of dark cultivation were detected in Anabaena, Nodularia, Tolypothrix, and 1 of Cylindrospermum strains. On the other hand, significantly lower NA (0.76-5.4 micromol/h C2H4 per g fresh mass) was found under light conditions in Trichormus, Nostoc and another Cylindrospermum strain; the activity completely disappeared after 12 h of dark cultivation. NA values were not directly related to the frequency of the heterocytes. The total NA of cyanobacterial colony was found to be probably independent of the number and/or position of heterocytes. Remarkable differences in NA between strains isolated from cultivated fields and strains originating from natural or non-cultivated soils were found.
journal_name
Folia Microbiol (Praha)journal_title
Folia microbiologicaauthors
Hrouzek P,Lukesová A,Simek Mdoi
10.1007/BF02931606keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
435-40issue
4eissn
0015-5632issn
1874-9356journal_volume
49pub_type
杂志文章abstract::Naturally occurring plant phenolics, p-coumaric acid (PA), caffeic acid (CA), ferulic acid (FA) and gentisic acid (GA) (25-100 nmol/L) had protective effects on acridine orange (AO; 216 mumol/L)- and ofloxacin (3 mumol/L)-induced genotoxicity in Salmonella typhimurium. FA, GA and CA exhibited a significant concentrati...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02817994
更新日期:2001-01-01 00:00:00
abstract::Purification of streptococcal extracellular NAD+ nucleosidase is associated with changes of kinetic properties. A high-molecular weight component is required for a full activity of the enzyme. The component is not produced by bacteria and is present in the Todd-Hewitt cultivation medium, the beef-heart extract serving...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02876396
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journal_title:Folia microbiologica
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更新日期:2012-11-01 00:00:00
abstract::Propionate at concentrations up to 0.05% decreased at 25 degrees C the growth and sporulation of Penicillium aurantiogriseum. The standard size of conidiogenous structures (metulae, phialids) and conidia was diminished. The effect was more pronounced at a higher temperature (30 degrees C). Inhibition of ochratoxin pro...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02814202
更新日期:1995-01-01 00:00:00
abstract::Among 18 tested strains of Claviceps spp., 7 produced significant amounts of exocellular polysaccharide (EPS). The maximum production of EPS was found in fermentation broth of Claviceps viridis. The kinetics of growth, substrate consumption, and EPS production in the batch, aerobic, submerged culture of this fungus we...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02993470
更新日期:2003-01-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-012-0120-y
更新日期:2012-07-01 00:00:00
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更新日期:2016-03-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02814323
更新日期:1994-01-01 00:00:00
abstract::Using phenol--water extraction, a lipopeptidopolysaccharide complex (LPPS) was isolated from Listeria monocytogenes. Some biological and immunological properties of LPPS were compared with lipopolysaccharide isolated by the same procedure from Salmonella typhimurium. LPPS possesses low pyrogenicity, but the immunologi...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02923515
更新日期:1985-01-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02883234
更新日期:1987-01-01 00:00:00
abstract::Aminoglycosides at 2x or 4x minimum inhibitory concentration induced postantibiotic effects against Pseudomonas aeruginosa lasting 3.5-4.9 h (gentamicin) and 0.5-3.7 h (selemycin). Postantibiotic effects of subinhibitory concentrations of the aminoglycosides tested were substantially longer. Some combinations of supra...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02814691
更新日期:1996-01-01 00:00:00
abstract::The resistance to killing by free radicals of two mutants ofPhaffia rhodozyma was determined. Mutant 5-7 did not produce astaxanthin but produced beta-carotene, while mutant 3-4 did not produce any carotenoid pigments. The resistance of mutant 5-7 was the same as that of the wild type but mutant 3-4 was rapidly killed...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02816505
更新日期:1998-01-01 00:00:00
abstract::Biofilms represent mixed communities present in a diverse range of environments; however, their utility as inoculants is less investigated. Our investigation was aimed towards in vitro development of biofilms using fungal mycelia (Trichoderma viride) as matrices and nitrogen-fixing and P-solubilizing bacteria as partn...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-012-0154-1
更新日期:2012-09-01 00:00:00
abstract::One hundred clinical isolates of Pseudomonas aeruginosa were checked for their sensitivity towards silver nitrate. Majority of the isolates were resistant at 20 mg/L and the resistance decreased with increasing concentration of silver nitrate, only 5% of the organisms showed resistance above 70 mg/L. These silver-resi...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02820752
更新日期:1989-01-01 00:00:00
abstract::Different mechanistic models for potassium ion uptake are analyzed by an equilibrium-thermodynamic formalism in terms of their comparative efficiency in setting chemical potential differences of the potassium ion of different magnitudes across the plasma membrane of lower eukaryotic cells. The possible adaptive advant...
journal_title:Folia microbiologica
pub_type: 杂志文章,评审
doi:10.1007/BF02925852
更新日期:1988-01-01 00:00:00
abstract::This work was aimed to develop a multiplex PCR assay to detect infectious agents such as Clavibacter michiganensis subsp. michiganensis, Fusarium sp, Leveillula taurica, and begomoviruses in tomato (Solanum lycopersicum) plants. Specific primer sets of each pathogen were designed based on intergenic ribosomal RNA sequ...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-012-0206-6
更新日期:2013-07-01 00:00:00
abstract::The aim of this study was to determine the prevalence of Listeria sp. and Listeria monocytogenes in soil samples with reference to type of fertilizers (natural and artificial) and distance from places intensively exploited by men, as well as to determine the relationship between the presence of L. monocytogenes in the...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-013-0260-8
更新日期:2014-01-01 00:00:00
abstract::Acmycin, a new polyene antibiotic, was fungistatic at low and fungicidal at high concentrations. It produced malformations in conidia of Helminthosporium oryzae and Curvularia lunata and caused leakage of yeast cells. Acmycin was fairly nontoxic to germinating seeds. The intravenous LD50 was 300-400 and intraperitonea...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02879559
更新日期:1983-01-01 00:00:00
abstract::This is the first report describing precipitation of bacteriophage particles with zinc chloride as a method of choice to isolate infectious lytic bacteriophages against Pectobacterium spp. and Dickeya spp. from environmental samples. The isolated bacteriophages are ready to use to study various (ecological) aspects of...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-015-0411-1
更新日期:2016-01-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02820804
更新日期:1998-01-01 00:00:00
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journal_title:Folia microbiologica
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doi:10.1007/BF02923520
更新日期:1985-01-01 00:00:00
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journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02816248
更新日期:1999-01-01 00:00:00
abstract::Treatment of Helicobacter pylori cells with several chaotropic agents resulted in different degrees of inhibition in the binding of the bacteria to hemin and Congo-red dye. Polyanions also yielded a >50% inhibitory effect. Furthermore, hydrophobic interaction chromatography was used to determine the relative surface h...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-011-0043-z
更新日期:2011-05-01 00:00:00
abstract::When studying the kinetics of DNA synthesis, growth and cell division in Escherichia coli B/r after irradiation with different doses of UV-radiation (254 nm) we could demonstrate, by means of pulse incorporation of 3H-thymidine, a lag in DNA synthesis after the irradiation. The relative rate of the restored DNA synthe...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02876446
更新日期:1982-01-01 00:00:00
abstract::Sodium fluoride showed pH-dependent physiological responses in the two test microalgae Anabaena khannae and Chlorococcum humicola. A. khannae showed severe membrane damage with fluoride at low pH with leakage of pigments and electrolytes. Annihilation of photosynthesis along with inhibition in 14C uptake was observed ...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02931045
更新日期:2004-01-01 00:00:00
abstract::Spatial distribution of ectomycorrhizae-associated basidiomycetes was determined in oakbirch forest using terminal restriction fragment length polymorphism (T-RFLP) analysis. The data were correlated with actual soil humidity, pH, electric conductivity of the soil extract, absorbance A(465) and A(665) of water and alk...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/s12223-010-0076-8
更新日期:2010-09-01 00:00:00
abstract::For the first time, it was reported in France a cluster of autochthonous severe community-acquired (CA) infections due to the USA300 methicillin-resistant Staphylococcus aureus (MRSA) clone. The three cases belonged to the same family without any identified clue of abroad importation pathway. The domestic spread of US...
journal_title:Folia microbiologica
pub_type: 杂志文章
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更新日期:2014-11-01 00:00:00
abstract::The plasmid R1drd-19 Km- and its derivative pON5300 were split by the PstI restriction enzyme; they differed in a 2.4 Mg/mol fragment which was present only in the pON5300. Both plasmids were present in 1-2 copies per chromosomal equivalent in E. coli JC5455 cells. The pON5300 is stable in its original mutagenized hos...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02879554
更新日期:1983-01-01 00:00:00
abstract::Twenty-one healthy bottle-fed infants were screened monthly (1-4 months) for bifidobacteria in their stools. Bifidobacteria were detected by culture and isolates specified by PCR. Alternatively, direct PCR in undiluted fecal suspensions was carried out for detection of bifidobacteria under the cultural detection level...
journal_title:Folia microbiologica
pub_type: 杂志文章
doi:10.1007/BF02931594
更新日期:2006-01-01 00:00:00
abstract::Common variable immunodeficiency (CVID) comprises a heterogeneous group of patients with as yet undefined genetic defects. Patients with CVID have in common a decrease in the levels of one or more serum immunoglobulin isotypes and a severe defect in the production of specific antibodies. Typically, the patients suffer...
journal_title:Folia microbiologica
pub_type: 杂志文章,评审
doi:10.1007/BF02814744
更新日期:1995-01-01 00:00:00