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Multiscalar electrical spiking in Schizophyllum commune.

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The split-gill fungus, Schizophyllum commune, exhibits electrical spikes similar to action potentials. These electrical signals, occurring in distinct oscillatory patterns, may be linked to nutrient transport within the fungus.

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Area of Science:

  • Mycology
  • Neurobiology
  • Biophysics

Background:

  • Fungal colonies exhibit complex electrical activity.
  • The split-gill fungus (Schizophyllum commune) is known for its unique growth patterns.

Purpose of the Study:

  • To analyze the electrical activity of Schizophyllum commune colonies.
  • To identify and characterize oscillatory patterns in fungal electrical potentials.
  • To model the mechanisms behind spike generation and explore their functional significance.

Main Methods:

  • Recording extracellular electrical potential over several days.
  • Analyzing electrical activity for oscillatory patterns.
  • Simulating spiking behavior using the FitzHugh-Nagumo model.

Main Results:

  • Identified three distinct families of oscillatory patterns: very slow (hours), slow (10 min), and very fast (half-minute).
  • Successfully simulated action potential-like spikes using the FitzHugh-Nagumo model.
  • Uncovered mechanisms contributing to spike shaping.

Conclusions:

  • Schizophyllum commune displays complex electrical signaling.
  • Electrical spikes may play a role in nutrient and metabolite transport.
  • Further research can explore the bioelectrical communication in fungi.