Effects of low-frequency magnetic fields on the viability of yeast Saccharomyces cerevisiae

Novák, Jan; Strašák, Luděk; Fojt, Lukáš; Slaninová, Iva; Vetterl, Vladimír

doi:10.1016/j.bioelechem.2006.03.029

Cited by 82 publications

(58 citation statements)

References 18 publications

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“…The impacts of low-level electromagnetic environment and strong magnetic field on human health have also been concerned widely (Martin and Nino 2006). Duration of exposure varied up to 24 min, a 50 Hz 10 mT magnetic field decreases the number of yeasts Saccharomyces cerevisae at laboratory temperature (24-26°C), and the result is similar to the experiments with bacteria E. coli, S. aureus, and L. adecarboxylata (Novák et al 2007). So for some microorganism, only a suitable magnetic field could promote microorganism abilities of nutriments absorption and utilization, and consequently accelerate their growth rate.…”

Section: Introductionsupporting

confidence: 73%

Effect of stable weak magnetic field on Cr(VI) bio-removal in anaerobic SBR system

Sun

2007

Biodegradation

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To study the impact of stable weak magnetic field on the Cr(VI) removal efficiency of predominated strains in ASBR system, the choice of the optimum magnetic density and its effect should be considered chiefly. At different magnetic densities, the growth and propagation rates of predominated strains in solid or liquid mediums and their capabilities of removing Cr(VI) were compared. The results showed that the optimum magnetic density was 6.0 mT. To meet the state first-class standard of effluent discharge, it took 2-5 h more in the plant wastewater treatment than in the synthetic wastewater treatment, but the presence of magnetic field made the reaction time up to par to decrease 1 and 2-3 h, respectively, compared with that of the control. The magnetized magnetic powder could improve the sludge sedimentation capability, turbidity of outflow water and efficiency of bio-system.

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Section: Introductionsupporting

confidence: 73%

Effect of stable weak magnetic field on Cr(VI) bio-removal in anaerobic SBR system

Sun

2007

Biodegradation

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“…For example, it was shown that S. cerevisiae yeast cells exposed to both static and 50 Hz homogeneous MFs at 0.35 and 2.45 mT with exposure times of 24 and 72 h displayed normal growth [Ruiz-Gómez et al, 2004]. In contrast, Novák et al [2007] reported that a 50 Hz MF with an induction of 10 mT decreased the number of viable yeast cells and reduced their growth rate. In addition, Binninger and Ungvichian [1997] found that yeast gene expression is altered in response to continuous exposure to a 20 mT, 60 Hz MF over a period of approximately 15 cell generations.…”

Section: Introductionmentioning

confidence: 95%

Effect of static magnetic fields on the budding of yeast cells

Egami

Naruse

Watarai

2010

Bioelectromagnetics

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The effect of static magnetic fields on the budding of single yeast cells was investigated using a magnetic circuit that was capable of generating a strong magnetic field (2.93 T) and gradient (6100 T² m⁻¹). Saccharomyces cerevisiae yeast cells were grown in an aqueous YPD agar in a silica capillary under either a homogeneous or inhomogeneous static magnetic field. Although the size of budding yeast cells was only slightly affected by the magnetic fields after 4 h, the budding angle was clearly affected by the direction of the homogeneous and inhomogeneous magnetic fields. In the homogeneous magnetic field, the budding direction of daughter yeast cells was mainly oriented in the direction of magnetic field B. However, when subjected to the inhomogeneous magnetic field, the daughter yeast cells tended to bud along the axis of capillary flow in regions where the magnetic gradient, estimated by B(dB/dx), were high. Based on the present experimental results, the possible mechanism for the magnetic effect on the budding direction of daughter yeast cells is theoretically discussed.

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“…In the recent years, special attention has been focused on the influence of various types of electric fields (EFs), magnetic fields (MFs) and electromagnetic fields (EMFs) on the functional parameters and pathogenicity potentials of unicellular microorganisms (bacteria and yeast) [1][2][3][4]. Currently, there are abundant evidences that various types of EFs, MFs and EMFs affect functional processes in microorganisms and influence their pathogenicity potential.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Rotating Magnetic Field on Growth Rate, Cell Metabolic Activity and Biofilm Formation by Staphylococcus Aureus and Escherichia Coli

kowski¹,

Nawrotek²,

Struk³

et al. 2013

Journal of Magnetics

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This work presents results of the study which concerns the influence of the rotating magnetic field (RMF) on the growth rate, cell metabolic activity and ability to form biofilms by E. coli and S. aureus. Liquid cultures of the bacteria were exposed to the RMF (RMF frequency f = 1-50 Hz, RMF magnetic induction B = 22-34 mT, time of exposure t = 60 min, temperature of incubation 37 °C). The present study indicate the exposition to the RMF, as compared to the unexposed controls causing an increase in the growth dynamics, cell metabolic activities and percentage of biofilm-forming bacteria, in both S. aureus and E. coli cultures. It was also found that the stimulating effects of the RMF exposition enhanced with its increasing frequencies and magnetic inductions.

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Effects of low-frequency magnetic fields on the viability of yeast Saccharomyces cerevisiae

Cited by 82 publications

References 18 publications

Effect of stable weak magnetic field on Cr(VI) bio-removal in anaerobic SBR system

Effect of stable weak magnetic field on Cr(VI) bio-removal in anaerobic SBR system

Effect of static magnetic fields on the budding of yeast cells

The Effects of Rotating Magnetic Field on Growth Rate, Cell Metabolic Activity and Biofilm Formation by Staphylococcus Aureus and Escherichia Coli

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