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Anne Fabricant1,2, Geoffrey Z Iwata3,4, Sönke Scherzer5

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Plants generate electrical signals, similar to animal nervous systems. This study shows that action potentials (APs) in Venus flytraps produce measurable magnetic fields, opening new avenues for plant research.

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Area of Science:

  • Plant electrophysiology
  • Biomagnetism
  • Plant neurobiology

Background:

  • Plants possess electrical signaling networks analogous to animal nervous systems.
  • Electrical activity in plants, like action potentials (APs), can be detected.
  • Magnetophysiological techniques are established for recording animal neural activity.

Purpose of the Study:

  • To demonstrate that plant action potentials generate measurable magnetic fields.
  • To investigate the biomagnetism associated with electrical activity in plants.
  • To explore the potential of magnetometry for plant research and diagnostics.

Main Methods:

  • Utilized atomic optically pumped magnetometers to record biomagnetism.
  • Induced action potentials in Venus flytraps (Dionaea muscipula) via heat stimulation.
  • Detected action potentials both electrically and magnetically.

Main Results:

  • Successfully recorded magnetic fields associated with electrical activity in plants.
  • Demonstrated that plant APs produce detectable biomagnetism.
  • Provided insights into the thermal properties of ion channels involved in plant APs.

Conclusions:

  • Plant action potentials generate measurable magnetic fields.
  • Magnetometry is a viable tool for studying plant electrical signaling.
  • Future applications include long-distance signaling studies and noninvasive diagnostics for plant health.