Clew's thread about nematamorphic fungi got thinking....Perhaps it wasn't worms, but a fungi that comes in to feed off of the worms, which turned me into a semiconductor for that time.
Fungal cells generate D.C. and A.C. (action potentials) electrical currents during theirgrowth and differentiation. In addition, they exhibit tropic growth (galvanotropism) and tactic responses (galvanotaxis) in applied electrical fields. The natural D.C. electrical currents of fungi are due to clustering of ion channels and pumps in certain regions of the cells, mycelium or thallus. It now seems that these electrical currents per se are not essential for the process of tip growth although the local traffic of calcium ions, which are a component of the currents, may be. Instead, electrical currents and action potentials are concerned apparently with spatial control of nutrient uptake and perhaps in intramycelium communication. Studies of the phenomenon of galvanotropism have been used to explore further the mechanisms underlying apical extension of hyphae and these also implicate localcalcium ion uptake as being important for this process. Motile zoospores of phytopathogenic fungi exhibit galvanotaxis in weak electrical fields of a size comparable to those generated by plant roots. This tactic behaviour predicts the sites of their accumulation in the natural electrical fields generated by roots and suggests that they may utilize the endogenous electrical currents of plants to detect potential hosts. Generating and responding to electrical currents is therefore an important and general aspect of fungal physiology.