Abstract：
:Bacterial metabolites with communicative functions could provide protection against stress conditions to members of the same species. Yet, information remains limited about protection provided by metabolites in Bacillus cereus and inter-species. This study investigated the effect of extracellular compounds derived from heat shocked (HS) and non-HS cultures of B. cereus and Geobacillus stearothermophilus on the thermotolerance of non-HS vegetative and sporulating B. cereus. Cultures of B. cereus and G. stearothermophilus were subjected to HS (42 or 65 °C respectively for 30 min) or non-HS treatments. Cells and supernatants were separated, mixed in a combined array, and then exposed to 50 °C for 60 min and viable cells determined. For spores, D values (85 and 95 °C) were evaluated after 120 h. In most cases, supernatants from HS B. cereus cultures added to non-HS B. cereus cells caused their thermotolerance to increase (D 50 12.2-51.9) when compared to supernatants from non-HS cultures (D 50 7.4-21.7). While the addition of supernatants from HS and non-HS G. stearothermophilus cultures caused the thermotolerance of non-HS cells from B. cereus to decrease initially (D 50 3.7-7.1), a subsequent increase was detected in most cases (D 50 18-97.7). In most cases, supernatants from sporulating G. stearothermophilus added to sporulating cells of B. cereus caused the thermotolerance of B. cereus 4810 spores to decline, whereas that of B. cereus 14579 increased. This study clearly shows that metabolites in supernatants from either the same or different species (such as G. stearothermophilus) influence the thermotolerance of B. cereus.
journal_name
Folia Microbiol (Praha)journal_title
Folia microbiologicaauthors
Gómez-Govea MA,García S,Heredia Ndoi
10.1007/s12223-016-0487-2subject
Has Abstractpub_date
2017-05-01 00:00:00pages
183-189issue
3eissn
0015-5632issn
1874-9356pii
10.1007/s12223-016-0487-2journal_volume
62pub_type
杂志文章abstract：:Rumen ciliate protozoa intensively engulf bacteria. However, their ability to utilize murein which is the main polysaccharide of bacterial cell wall has hardly been recognized. The present study concerns the ability of the rumen protozoa Diploplastron affine to digest and ferment murein. The ciliates were isolated fro...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-010-0047-0
更新日期：2010-07-01 00:00:00
abstract：:Phytoplankton successions under ice cover (January-March) were determined in four oligotrophic lakes (Burtjärn, Aspen, Vialamptjärn and Storkorstjärn) located in North-Eastern Sweden. The total phosphorus concentration in the lakes was less than 10 micrograms/L. Lake Burtjärn (reference lake) had a similar hydrology a...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02931370
更新日期：2003-01-01 00:00:00
abstract：:Raoultella spp. representatives are Gram-negative capsulated, nonmotile rods. These bacteria are found in the natural environment: plants, water, soil and insects. R. ornithinolytica is one of the three species of Raoultella. R. ornithinolytica is the only species within the genus which has the ability to produce orni...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-015-0390-2
更新日期：2015-11-01 00:00:00
abstract：:Mycobacterium avium paratuberculosis (Map) is a pathogen which causes a chronic progressive granulomatous enteritis known as paratuberculosis or Johne's disease and it primarily affects wild and domestic ruminants. The aim of this research was to examine a flock which consisted of 294 goats and was located in Garfagna...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-017-0518-7
更新日期：2017-11-01 00:00:00
abstract：:The uvrE (E. coli KS 114) cells carry a mutation in the gene that codes for helicase II. This is the protein responsible for replicative unwinding of double-helical DNA. The repair mode of such cells may be altered as compared with the wild type. The survival of uvrE cells during postirradiation incubation under inhib...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02922491
更新日期：1985-01-01 00:00:00
abstract：:Stabilized sewage sludge is applied to agricultural fields and farmland due to its high organic matter content. The aim of this study was to investigate the effects of two types of sludge stabilization, mesophilic anaerobic digestion (MAD) and thermophilic anaerobic digestion (TAD), on bacterial communities in sludge,...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-015-0396-9
更新日期：2015-11-01 00:00:00
abstract：:Uropathogenic Escherichia coli (UPEC) isolates contain large genomic segments, termed pathogenicity islands (PAIs), that contribute to their virulence. A total of 150 UPEC and 50 commensal E. coli isolates from outpatients were investigated for antimicrobial susceptibility and the presence of eight PAI markers. One hu...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-015-0433-8
更新日期：2016-05-01 00:00:00
abstract：:Pullulanase of Klebsiella oxytoca is one of a wide variety of extracellular proteins that are secreted by Gram-negative bacteria by the complex main terminal branch (MTB) of the general secretory pathway. The roles of some of the 14 components of the MTB are now becoming clear. In this review it is proposed that most ...
journal_title：Folia microbiologica
pub_type： 杂志文章,评审
doi：10.1007/BF02818976
更新日期：1997-01-01 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：:Submerged cultures of the low-production strain of Tolypocladium inflatum DSM 63544 formed a mixture of cyclosporins (CS) consisting of CS-A, CS-B, "CS-3" and "CS-4". Glucose, sucrose and maltose were highly favored for biomass production but provided a different physiological state necessary for CS biosynthesis. Not ...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02884035
更新日期：1991-01-01 00:00:00
abstract：:The validity of the principle of homeoviscous adaptation for Bacillus subtilis was tested by comparing fluorescence anisotropy (1,6-diphenyl-1,3,5-hexatriene) and electron-spin resonance (16-doxylstearate) measurements carried out in isolated plasma membranes and in phospholipid fractions. The physical measurements we...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02925901
更新日期：1988-01-01 00:00:00
abstract：:The present study was conducted to determine the gene responsible for beta-glucosidase (BGL) production and to generate a full-length complementary DNA (cDNA) of one of the putative BGL genes, which showed a significant expression level when Schizophyllum commune KUC9397 was grown in optimized medium. The relative exp...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-016-0484-5
更新日期：2017-05-01 00:00:00
abstract：:The ability of the rumen ciliates to utilize β-glucans other than cellulose and xylan is currently being recognized. The objective of the present study was to characterize the ability of the ciliate Diploplastron affine to digest some pachyman, laminarin, pustulan, curdlan and lichean. The protozoa were isolated from ...
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
abstract：:An extracellular acid phosphatase isolated from the culture of a wild strain Aspergillus niger, producing the dephosphorylating 3-phytase, was obtained in a homogeneous form by sequential application of ultrafiltration through PS 50 membrane, gel filtration on Sephadex G-100 and ion exchange chromatography on DEAE-Sep...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02931618
更新日期：2006-01-01 00:00:00
abstract：:Poly-gamma-L-glutamic acid was synthesized in optimized fermentor cultivation of Bacillus licheniformis. The polypeptide obtained was esterified using benzyl- and butylbromides. Benzyl esters with 30, 60 and 100% degree of esterification were prepared. Solubility of the products in dimethyl sulfoxide, chloroform, meth...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02818530
更新日期：2001-01-01 00:00:00
abstract：:The bioluminescence (BLM) and colony-forming units (CFU) of Pseudomonas fluorescens HK44 were monitored during encapsulation into pre-polymerized Si(OMe)₄. The non-induced BLM of free cells was increased in the presence of 0.5-2.5 % MeOH. After mixing silica sol with the cell suspension, both BLM and CFU dropped to 1-...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-010-0091-9
更新日期：2010-11-01 00:00:00
abstract：:Physiological and biochemical properties were tested in 45 isolates of Aspergillus egyptiacus (16 isolates), Emericella nidulans (16) and Aspergillus versicolor (13). The three fungal species exhibited common and similar features. The big similarity between A. egyptiacus and E. nidulans was greater than between A. egy...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02814449
更新日期：1994-01-01 00:00:00
abstract：:The soil microbial population, determined over a period of 19 months and the elemental chemical composition measured by X-ray fluorescence techniques were followed in two uncultivated salt-affected areas of Greece, namely Lantza and Klidi. The ecological conditions at Lantza remained stable during the period of study ...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02877387
更新日期：1983-01-01 00:00:00
abstract：:Resistance determinants for HgCl2 and CdCl2 were eliminated along with a number of antibiotic resistance factors from Acinetobacter lwoffi and Micrococcus sp. at 44 degrees C. These organisms were orginally resistant to HgCl2, merbromin, CdCl2, Pb(NO3)2, benzylpenicillin, erythromycin, carbenicillin, tetracycline and ...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02925907
更新日期：1988-01-01 00:00:00
abstract：:The screening of 17 SAg genes of S. aureus isolated from the sputum of cystic fibrosis (CF) patients revealed that among 47 genetically different strains, 39 (83 %) carried SAg genes. Superantigens forming enterotoxin gene cluster were detected in 20 strains. The 2nd most common superantigen type was selk detected in ...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02931628
更新日期：2006-01-01 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
abstract：:Mineral nutrition of crop plants is one of the major challenges faced by modern agriculture, particularly in arid and semi-arid regions. In alkaline calcareous soils, the availability of phosphorus and zinc is critically less due to their fixation and precipitation as complexes. Farmers use fertilizers to fulfill crop...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-020-00831-3
更新日期：2020-10-24 00:00:00
abstract：:Bacteria accumulate high amounts of potassium in the cytoplasm. For studying transport of K+ (with 86Rb as a marker) in bacteria (Staphylococcus aureus 17810S), the cells were depleted of the internal K+ pool by a DNP treatment. Kinetics and energetics of 86Rb transport was assayed with glucose as an exogenous energy ...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02816378
更新日期：1998-01-01 00:00:00
abstract：:The survival of Herbaspirillum spp. cells added directly or encapsulated in alginate beads and colonization of wheat roots was evaluated in soil microcosms. Cells entrapped in alginate in the presence of JNFb-broth and introduced into unplanted non-sterile clay loamy and sandy soils survived better than cells added di...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02825879
更新日期：2001-01-01 00:00:00
abstract：:The synergistic anticandidal activity of three diketopiperazines [cyclo-(L-Pro-L-Leu) (1), cyclo-(D-Pro-L-Leu) (2), and cyclo-(D-Pro-L-Tyr) (3)] purified from a Bacillus sp. N strain associated with entomopathogenic nematode Rhabditis (Oscheius) in combination with amphotericin B and clotrimazole was investigated usin...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-013-0234-x
更新日期：2013-11-01 00:00:00
abstract：:Cyanobacteria are one of the most successful and oldest forms of life that are present on Earth. They are prokaryotic photoautotrophic microorganisms that colonize so diverse environments as soil, seawater, and freshwater, but also stones, plants, or extreme habitats such as snow and ice as well as hot springs. This d...
journal_title：Folia microbiologica
pub_type： 杂志文章,评审
doi：10.1007/s12223-018-0626-z
更新日期：2018-09-01 00:00:00
abstract：:A rifampicin-resistant variant of two strains of Lactobacillus plantarum, one strain of Pediococcus acidilactici, and one strain of Enterococcus faecium were used for the experimental production of lucerne silage. Laboratory silage without inoculants served as a control. Counts of total anaerobes, total lactic acid ba...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-012-0142-5
更新日期：2012-07-01 00:00:00
abstract：:The present study was designed to characterize phenotypically and genotypically a Trueperella pyogenes strain isolated from a brain abscess of an adult roebuck (Capreolus capreolus). The species identity could be confirmed by phenotypical investigations, by MALDI-TOF MS analysis, and by sequencing the 16S ribosomal RN...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/s12223-017-0533-8
更新日期：2018-01-01 00:00:00
abstract：:Using the method of two separate UV exposures the increase of UV resistance after various induction fluences in growing and resting Escherichia coli B/r Hcr+ was followed. In resting cells, the optimum induction energy fluence was found to be 30 J/m2. In exponentially growing cells testing of induction has proved to b...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02926452
更新日期：1979-01-01 00:00:00
abstract：:Mitochondria isolated from Neurospora crassa were purified by centrifugation in a Percoll density gradient. Enzyme activities and cytochrome differential spectra revealed a high purity of the mitochondria. As compared with a crude mitochondrial fraction the purified mitochondria exhibited a high respiratory activity a...
journal_title：Folia microbiologica
pub_type： 杂志文章
doi：10.1007/BF02879491
更新日期：1983-01-01 00:00:00
