| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2005: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2004: ¥2,400,000 (Direct Cost: ¥2,400,000)
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| Research Abstract |
Sufficient initial studies of the optimum growing conditions for mushroom farming have been made at the growing site. However, their scientific investigations need continuous updating. In this study, using bio-electric potential as an indicator, being closely related to the activation of mushroom growth, scientific studies of the optimum growing conditions have been made, in addition to the studies of the relationship between illumination or morphogenesis. This lead to the fabrication of an innovative light source for control of farming. Furthermore, by observing autonomous bioelectric potential signals, which accompanied the biorhythms of mushrooms, we discussed a farming technique, using the biorhythm as a biosensor to control the environmental light stimuli of the mushrooms. In addition, we succeeded in the non-destructive photography of the development of fungal threads in the medium using MRI. The relationship between the growth of the fruit bodies on the ground and fungal threads
… More
in the subterranean was discussed. The following is a detail of the technical development :
(1)Additional production of a precise auto-measurement system for bioelectric potential.
Using the knowledge gained from the fabricated equipment, an automatic system was produced for the measurement of the bioelectric potential, resulting from programmable air components or light stimuli.
(2)Using a SQUID, an ultra-faint magnetic field signal was measured in the mushroom fruit body.
The measurement of the ultra-faint magnetic field signal of mushroom, self-induced by light stimuli, was measured at the levels of from fT to pT and its application was investigated for the analysis of the physiologically active conditions and health diagnostics of the mushrooms.
(3)Practical use of light source equipment, aiming at the optimum farming conditions, using the mushroom itself as a biosensor.
Observation of the biorhythm of a specific mushroom, using it as a biosensor to control the duration of light and dark of light stimulation of the surrounding mushrooms.
(4)Three-dimensional display of the development of fungal threads using MRI
Using MRI, we have succeeded in generating a non-destructive display of a tomograph of fungus for a period covering the initial planting of the fungus up to the dispersal of spores from the fruiting body.
(5)Practical use of light sources at a mushroom farm
A light source system was fabricated, based on the results obtained from mushroom farming in a Growth Chamber in the laboratory. Then, in order to evaluate the effectiveness of the system.
(6)others
The possibility of growth control by continuous application of a direct current field to mushrooms was discussed. The bioelectric potential response was investigated with regard to the magnetic field, together with MRI studies of the effects on the fungal growth in the culture medium. Less
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