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Zywicka A, Dunisławska A, Fijalkowski K

Bioeffects Seen

Authors not listed · 2025

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Rotating magnetic fields at 5 Hz dramatically boost bacterial gene expression and production by 28%.

Plain English Summary

Summary written for general audiences

Scientists exposed bacteria to rotating magnetic fields at 5 Hz and 50 Hz frequencies for 12-72 hours and found the EMF exposure significantly increased bacterial cellulose production by up to 28%. The magnetic fields altered gene expression in the bacteria, with stronger effects at the lower 5 Hz frequency.

Why This Matters

This study reveals something remarkable: even simple bacteria respond dramatically to magnetic field exposure by changing their gene expression and metabolic output. The fact that 5 Hz rotating magnetic fields produced stronger effects than 50 Hz fields is particularly noteworthy because 5 Hz falls within the extremely low frequency range that surrounds us daily from power lines and household wiring. While this research focused on beneficial applications for bacterial cellulose production, it demonstrates the fundamental biological reality that electromagnetic fields can profoundly alter cellular function at the genetic level. The 28% increase in bacterial production after EMF exposure shows these aren't subtle effects - they're substantial biological changes that occur when living systems encounter magnetic fields similar to those in our modern electromagnetic environment.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 5-50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 5-50 HzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2025). Zywicka A, Dunisławska A, Fijalkowski K.
Show BibTeX
@article{zywicka_a_dunisawska_a_fijalkowski_k_ce4291,
  author = {Unknown},
  title = {Zywicka A, Dunisławska A, Fijalkowski K},
  year = {2025},
  doi = {10.1021/acs.biomac.5c00653},
  
}
DOI: 10.1021/acs.biomac.5c00653PubMed: 40880222

Quick Questions About This Study

Yes, this study found that 5 Hz rotating magnetic fields significantly upregulated bacterial cellulose synthase genes in Komagataeibacter xylinus bacteria. The gene expression changes were statistically significant and correlated with increased bacterial cellulose production, demonstrating that low-frequency magnetic fields can alter cellular function at the genetic level.
Rotating magnetic field exposure increased bacterial cellulose production by 28% for wet weight and 18% for dry weight compared to unexposed control bacteria. These substantial increases occurred across both 5 Hz and 50 Hz frequencies, with the strongest effects observed at the lower 5 Hz frequency.
The 5 Hz rotating magnetic field produced stronger biological effects than 50 Hz in this bacterial study. While both frequencies significantly enhanced bacterial cellulose production and gene expression compared to controls, the researchers specifically noted that the strongest effects occurred at the lower 5 Hz frequency.
The study tested exposure durations from 12 to 72 hours and found statistically significant changes in bacterial gene expression at all time points tested. This suggests that magnetic field effects on bacterial cellular function can occur relatively quickly, within the first 12 hours of exposure.
This study specifically used rotating magnetic fields (RMF) rather than static fields, finding substantial effects on bacterial gene expression and production. The rotating nature of the magnetic field appears important for the biological response, as the researchers noted RMFs represent a promising approach to modulate gene expression in bacteria.