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Fungi anaesthesia.

Andrew Adamatzky1, Antoni Gandia2

  • 1Unconventional Computing Laboratory, UWE, Bristol, UK. andrew.adamatzky@uwe.ac.uk.

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Electrical activity in oyster fungus (Pleurotus ostreatus) was significantly altered by chloroform. Chloroform exposure reduced electrical waves and spiking, which gradually recovered upon removal, indicating its impact on fungal electrophysiology.

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Area of Science:

  • Mycology
  • Electrophysiology
  • Fungal Biology

Background:

  • Fungal mycelia exhibit complex electrical activity, including baseline potential drifts and action potential-like spikes.
  • Understanding the factors influencing fungal electrical signaling is crucial for various applications.

Purpose of the Study:

  • To investigate the effects of chloroform vapor on the electrical activity of Pleurotus ostreatus mycelia.
  • To characterize the changes in baseline potential waves and spiking activity upon exposure and removal of chloroform.

Main Methods:

  • Monitoring the electrical potential of Pleurotus ostreatus mycelium.
  • Exposing the myceliated substrate to chloroform vapor.
  • Observing changes in electrical activity parameters like wave duration, frequency, and amplitude.
  • Assessing the reversibility of these changes after chloroform removal.

Main Results:

  • Chloroform exposure led to a significant decrease in the amplitude of baseline potential waves and an increase in their duration.
  • Spiking activity was either completely abolished or showed a substantial reduction in frequency following chloroform exposure.
  • Upon removal of chloroform, the electrical activity of the mycelium gradually returned to its original state.

Conclusions:

  • Chloroform vapor profoundly impacts the electrical activity of Pleurotus ostreatus mycelia, affecting both slow baseline drifts and fast spiking.
  • The observed changes are reversible, suggesting that chloroform interferes with the mechanisms underlying fungal electrophysiological processes.