Ruzic R., Gogala N. Jerman I. (1997):
Sinusoidal magnetic fields: effect on the growth and content of ergosterol
in mycorrhizal fungi. Electro- Magnetobiology 16(2): 129-142.
The effects of weak, extremely low-frequency magnetic
fields on the growth and membrane lipid ergosterol of mycorrhizal fungi
Pisolithus tinctorius were studied. Two types of media were used: solid
(pH 6) and liquid (pH 3). The homogenous sinusoidal magnetic field, generated
by a pair of Helmholtz coils with magnetic flux density 0.025 and 0.1 mT
and frequency 50 Hz enhanced the growth of mycelia at early stages of development.
The same field at 0.01 mT, 46 Hz had no observable effects. Analysis of
the fungi specific membrane constituent ergosterol by high performance
liquid chromatography reveals a slightly increased content of ergosterol
in the mycelia (along with the observation of stimulated growth). The results
indicate some importance of the membrane which is most probably the acceptor
of electromagnetic signals, as has been revealed by many studies with animals.
However the exact mechanisms for the explanation of these effects are not
known yet.
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