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[Refractory properties of cardiac tissue at fast sodium current decrease. Comparison of atrium and ventricle]
Biofizika
|September 1, 1982
Summary
Neurospora crassa mycelial cells exhibit a resting membrane potential of -156 mV. Blue-violet light exposure induces a transient hyperpolarization, shifting the membrane potential to -38 mV.
Area of Science:
- Cellular electrophysiology
- Mycology
- Plant physiology
Context:
- Understanding the electrical properties of fungal cell membranes is crucial for elucidating cellular functions.
- Neurospora crassa serves as a model organism in biological research.
Purpose:
- To investigate the resting membrane potential of Neurospora crassa.
- To determine the effect of blue-violet light on the cell membrane potential.
Summary:
- Standard microelectrode techniques were employed to measure the membrane potential of Neurospora crassa mycelial cells.
- The resting membrane potential was recorded at -156 ± 11 mV (negative inside).
- Illumination with blue-violet light induced a transient hyperpolarization, reaching -38 ± 5 mV after 25 minutes.
Impact:
- This study provides quantitative data on the electrophysiological response of Neurospora crassa to light stimuli.
- Findings contribute to the understanding of light-dependent cellular processes in fungi.