Realization of energy-saving and high-efficiency cultivation technology using plant bioelectric potential.
Green (Saitama University Research Seed Collection 2025-25 p.101)
Keywords: plant bioelectric potential, plant factory, cultivation environment control, photosynthetic activity, plant sensing
Since I was little, I have been close to animals and plants, and I have always been very interested in living organisms. Additionally, because I liked making things, I enrolled in the Teacher Training Course for Technical Subjects at Saitama University’s Faculty of Education. There, I encountered the theme of "plant bioelectric potential" for my graduation research. I learned that, just like human electrocardiograms and brain waves, plants also have electrical signals, and by observing these signals, it is possible to capture the state of the plants. I was fascinated by this concept. I realized that plant bioelectric potential responds sensitively to various changes in the surrounding environment, which means that plants are very high-precision sensors. This sparked my interest in developing sensor systems based on plants, and I am currently conducting research in the Faculty of Engineering. Research on plant bioelectric potential has few examples and many unclear points, but it has clarified relationships such as those with photosynthetic activity. I believe that by utilizing this in environmental control in agricultural settings, it can become a groundbreaking technology that contributes to energy-saving and high-efficiency cultivation techniques. Therefore, I am advancing my research every day.
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Yuki Hasegawa, Associate Professor Graduate School of Science and Technology, Department of Mathematical and Electronic Information, Field of Electrical and Electronic Physics 【Recent Research Themes】 ● Research on the maturity evaluation of post-harvest fruits ● Research on energy-saving and high-efficiency lighting technology in combined sunlight and artificial light facility cultivation ● Development of taste sensors for hot beverages using inorganic membrane materials ● Development of taste sensors for high-sweetness sweeteners using single-molecule layered structure membranes ● Research on system construction and information processing methods for odor sensing
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【Appeal Points to the Industry】 ● The correlation between photosynthetic activity and plant bioelectric potential is clear! ● Non-invasive or minimally invasive methods to understand and evaluate plant activity and condition. ● Measurement possible for various types, including ornamental plants, trees (bonsai), leafy vegetables, and fruiting vegetables. ● Development of electrodes and systems capable of long-term stable measurements. ● Elucidation of response mechanisms to improve reliability as evaluation and control information. ● Consideration of data analysis methods such as multivariate analysis and deep learning. 【Examples of Practical Use, Applications, and Utilization】 ● Improved cultivation efficiency through automatic light source control for small home gardening kits. ● Evaluation of photosynthetic activity and carbon dioxide concentration control based on it in tomato greenhouse cultivation facilities. ● Physiological activity evaluation of bonsai and elucidation of its relationship with environmental factors. ● Non-destructive ripeness evaluation of harvested fruits.
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Plant factory installed in the laboratory.
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The Saitama University Open Innovation Center is a center that functions as a liaison office for industry-academia-government collaboration. It consists of three departments: the Industry-Academia-Government Collaboration Department, the Intellectual Property Department, and the Startup Support Department, each staffed with coordinators well-versed in various fields. The center's activities include solving technical challenges in companies, supporting the implementation of joint research, and conducting technology transfer aimed at introducing and utilizing Saitama University's intellectual property.