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EMF radiations (1800 MHz)-inhibited early seedling growth of maize (Zea mays) involves alterations in starch and sucrose metabolism.

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Kumar A, Singh HP, Batish DR, Kaur S, Kohli RK. · 2015

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Cell phone radiation disrupted plant growth and metabolism at exposure levels below current safety limits, suggesting fundamental biological effects.

Plain English Summary

Summary written for general audiences

Researchers exposed corn seedlings to cell phone radiation (1800 MHz) for different time periods and found that 4 hours of exposure significantly stunted growth and disrupted the plants' sugar metabolism. The radiation caused a 23% reduction in shoot growth and altered key enzymes responsible for breaking down starches and sugars that plants need for energy. This demonstrates that radiofrequency radiation can interfere with fundamental biological processes even in plants.

Why This Matters

This plant study reveals something important about how radiofrequency radiation affects living systems at the cellular level. The researchers used 1800 MHz radiation at a SAR of 0.169 W/kg, which is well below current safety limits for human exposure (2 W/kg). Yet even at this relatively low level, just 4 hours of exposure was enough to significantly disrupt the corn seedlings' basic metabolic processes. What makes this particularly relevant is that plants don't have nervous systems or complex cellular structures that EMF skeptics often claim are necessary for biological effects. The fact that RF radiation can interfere with fundamental enzyme activity and carbohydrate metabolism in such simple organisms suggests these effects operate at a very basic biochemical level. This adds to the growing body of evidence showing that current safety standards, based solely on heating effects, may not adequately protect against the non-thermal biological impacts of radiofrequency radiation.

Exposure Details

SAR
0.169 W/kg
Source/Device
1800 MHz
Exposure Duration
½, 1, 2, and 4 hours

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.169 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 9x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The present study investigated the impact of 1800-MHz electromagnetic field radiations (EMF-r), widely used in mobile communication, on the growth and activity of starch-, sucrose-, and phosphate-hydrolyzing enzymes in Zea mays seedlings.

We exposed Z. mays to modulated continuous wave homogenous EMF-r at specific absorption rate (SAR) o...

The analysis of seedlings after 7 days revealed that short-term exposure did not induce any signific...

The study concludes that EMF-r-inhibited seedling growth of Z. mays involves interference with starch and sucrose metabolism.

Cite This Study
Kumar A, Singh HP, Batish DR, Kaur S, Kohli RK. (2015). EMF radiations (1800 MHz)-inhibited early seedling growth of maize (Zea mays) involves alterations in starch and sucrose metabolism. Protoplasma. 2016 Jul;253(4):1043-9. doi: 10.1007/s00709-015-0863-9. Epub 2015 Aug 16. PMID: 26277350.
Show BibTeX
@article{a_2015_emf_radiations_1800_mhzinhibited_1117,
  author = {Kumar A and Singh HP and Batish DR and Kaur S and Kohli RK.},
  title = {EMF radiations (1800 MHz)-inhibited early seedling growth of maize (Zea mays) involves alterations in starch and sucrose metabolism.},
  year = {2015},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/26277350/},
}
PubMed: 26277350

Cited By (38 papers)

Quick Questions About This Study

Yes, a 2015 study found that 4 hours of 1800 MHz radiation exposure caused a 23% reduction in corn seedling shoot growth. The radiation disrupted the plants' sugar metabolism and reduced their photosynthetic pigments by 13%, demonstrating that cell phone frequencies can interfere with basic plant development processes.
Research shows that 4 hours of 1800 MHz EMF exposure significantly disrupted corn seedlings' sugar metabolism. The radiation increased starch-breaking enzymes by 92-94% and sugar-splitting enzymes by 88-266%, while reducing total carbohydrates by 18%. This metabolic disruption contributed to stunted plant growth.
A 2015 corn study found that short EMF exposures caused no significant effects, but 4 hours of 1800 MHz radiation caused measurable biological damage. This suggests there's a threshold exposure duration before cell phone frequencies begin interfering with fundamental plant biological processes.
Plants exposed to 1800 MHz radiation for 4 hours showed dramatic enzyme activity changes. Starch-breaking enzymes increased by over 90%, while sugar-processing enzymes increased by 88-266%. These enzyme disruptions interfered with the plants' ability to properly metabolize energy, contributing to growth problems.
Yes, 4 hours of 1800 MHz radiofrequency exposure reduced photosynthetic pigments in corn seedlings by 13% compared to unexposed controls. This reduction in chlorophyll and other pigments likely impaired the plants' ability to capture sunlight and produce energy through photosynthesis.