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Possible role of iron containing proteins in physiological responses of soybean to static magnetic field.

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Shokrollahi S, Ghanati F, Sajedi RH, Sharifi M · 2018

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Magnetic fields altered iron-containing proteins in plants at 20-30 mT, revealing how EMF may influence biological systems through iron interactions.

Plain English Summary

Summary written for general audiences

Researchers exposed soybean plants to magnetic fields for five hours daily over five days. The magnetic fields altered iron-containing proteins that help plants manage cellular stress, with different field strengths producing opposite effects. This demonstrates how magnetic fields can influence biological processes in living organisms.

Why This Matters

While this study examined plants rather than humans, it provides important insights into how magnetic fields interact with biological systems at the molecular level. The magnetic field strengths used (20-30 mT) are thousands of times stronger than typical household EMF exposures, which range from microtesla to low millitesla levels. However, the research demonstrates a fundamental principle: magnetic fields can alter protein structure and function through interactions with iron atoms. This mechanism could be relevant to human health since iron-containing proteins play crucial roles in our cellular metabolism and antioxidant defenses. The finding that different field strengths produced opposite biological effects also highlights the complex, non-linear nature of EMF bioeffects.

Exposure Details

Magnetic Field
0, 20, and 30 mG
Exposure Duration
5 day, 5 h each

Exposure Context

This study used 0, 20, and 30 mG for magnetic fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0, 20, and 30 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern rangeFCC limit is 100x higher than this level

Study Details

In the present study, we examined the relationship between ferrous content and gene expression and activity of ferritin and catalase in soybean plants under the influence of 0, 20, and 30 mT SMF for 5 day, 5 h each.

Exposure to 20 mT decreased gene expression of Fe transporter, ferrous and H2O2 contents and gene e...

From these results, it is likely that the number of iron atoms is involved in the nature of influence of SMF on protein structure.

Cite This Study
Shokrollahi S, Ghanati F, Sajedi RH, Sharifi M (2018). Possible role of iron containing proteins in physiological responses of soybean to static magnetic field. J Plant Physiol. 226:163-171, 2018.
Show BibTeX
@article{s_2018_possible_role_of_iron_462,
  author = {Shokrollahi S and Ghanati F and Sajedi RH and Sharifi M},
  title = {Possible role of iron containing proteins in physiological responses of soybean to static magnetic field.},
  year = {2018},
  
  url = {https://www.sciencedirect.com/science/article/abs/pii/S0176161718301688},
}

Quick Questions About This Study

Yes, static magnetic fields significantly alter iron-containing proteins in soybean plants. A 2018 study found that 20 mT and 30 mT magnetic fields produced opposite effects on iron transport proteins and antioxidant enzymes after five hours of daily exposure over five days.
Yes, 20 mT and 30 mT magnetic fields produce opposite biological responses in plants. The 20 mT field decreased iron transporter gene expression and antioxidant enzyme activity, while 30 mT exposure increased these same biological markers in soybean plants.
Static magnetic fields alter protein shape and activity without changing their basic structure. Research shows magnetic fields modify the tertiary structure and size of iron-containing proteins like ferritin and catalase, while leaving their secondary structure completely unchanged.
Yes, magnetic field exposure activates iron-mediated signaling pathways in plants. The 2018 soybean study demonstrated that static magnetic fields influence cellular stress responses through changes in iron-containing proteins, suggesting iron atoms mediate these biological effects.
Yes, five hours of daily magnetic field exposure significantly impacts plant antioxidant systems. Researchers found that this exposure duration altered both the gene expression and activity of key antioxidant enzymes like catalase in soybean plants over five days.