Arabidopsis cryptochrome is responsive to Radiofrequency (RF) electromagnetic fields

Area of Science:

• Sensory biology
• Quantum biology
• Plant science

Background:

• Living systems' response to weak electromagnetic fields is a major unsolved challenge.
• Cryptochrome, an evolutionarily conserved flavoprotein, is implicated in magnetic field responses across species.
• The precise role of cryptochromes as biological magnetosensors requires further investigation.

Purpose of the Study:

• To investigate whether cryptochromes can function as biological magnetosensors.
• To test the hypothesis that radiofrequency (RF) magnetic fields can influence cryptochrome activity.
• To explore the implications of RF exposure on cryptochrome-dependent biological processes.

Main Methods:

• Utilized an in vivo phosphorylation assay to detect activated cryptochrome (cry1) in Arabidopsis seedlings.
• Exposed seedlings to a weak 7 MHz radiofrequency magnetic field.
• Measured changes in cryptochrome responsivity to blue light, conformational changes, plant growth, and gene expression.

Main Results:

• A 7 MHz RF magnetic field significantly reduced the biological responsivity of cryptochrome cry1 to blue light.
• RF exposure decreased conformational changes associated with cryptochrome's biological activity.
• RF exposure altered cryptochrome-dependent plant growth and gene expression, aligning with theoretical predictions.

Conclusions:

• This study provides the first demonstration of a biological receptor responding to RF exposure.
• The findings support quantum physical hypotheses regarding magnetoreception mechanisms.
• Results have significant implications for understanding magnetosensing and potential applications in biotechnology and medicine.