GAMAGE, Sanath

OHGA, Shoji

The fundamental interaction of electric field with materials is that electric field exerts force on the charges in the materials. All plants, animals and other creature live under an electric field because of there is an electric field between the ionosphere and the Earth. The external electric influences cause the activation of ions, forcing on dielectric compounds and the polarization of dipoles in living cells. The experiment set up has represented natural electric field and interactions between ground and clouds. High voltage generator and Aluminium metal plates were used to produce +0.2 kV/cm and +0.1 kV/cm upward electric fields and –0.1 kV/cm downward electric field. Petri dishes which included Ophiocordyceps sinensis strain inoculated rice and adzuki bean were exposed to particular electric fields. The highest mycelial growth was obtained rice media in –0.1 kV/cm of electric field (63.03 mm, 25 days after inoculation) followed by adzuki bean media in –0.1 kV/cm of electric field (56.25 mm, 25 days after inoculation). However, on day 25 colony diameter value for rice media in –0.1 kV/cm of electric field was significantly higher than control (P = 0.049  0.05) compared to control. The moisture contents of the aggregated grown mycelia were comparatively exceeded in –0.1 kV/cm of electric field treated sample in both types of media. Positive electric field treated samples have been shown less water content compared to control. This study shows that inverse electric field has significant effect on enhancement of the mycelial growth of O. sinensis

Effects of Different Electric Field on Mycelial Growth of Isolated Strain of Wild Ophiocordyceps sinensis

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