電気刺激による粘菌活性度の推定とその環境指標としての可能性－走電性と菌体内ATP濃度との相関－

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2014/11/01

タイトル(英語): Estimation of Plasmodial Activity in Response to Electrical Stimulation and the Potential Use of this Measurement as an Environmental Indicator―The Correlation between Galvanotaxis and ATP Levels in the Plasmodium―

著者名: 海老根　雅人（帝京平成大学大学院情報学研究科／千葉科学大学危機管理学部医療危機管理学科）

著者名(英語): Masato Ebine (Graduate School of Information Science, Teikyo Heisei University/Faculty of Risk and Crisis Management, Chiba Institute of Science)

キーワード: フィザルム，這行速度，走電性，環境指標，菌体内活性，ATP濃度　　P. polycephalum，crawling velocity，galvanotaxis，environmental indicator，plasmodium activity，ATP

要約(英語): The concentration of adenosine triphosphate (ATP) in the plasmodium of Physarum polycephalum changes in response to environmental pollution, but the concentration cannot be discerned directly. This study sought to use the galvanotaxis of P. polycephalum to estimate the concentration of ATP in P. polycephalum based on its crawling velocity. An experiment verified that the ATP concentration changed in response to an electric current, so the ATP concentration was measured at different currents. As previously reported, pH and environmental pollutants such as sodium hydroxide and sodium sulfite harm P. polycephalum and decrease its ATP concentration. Therefore, electrical stimulation was chosen for the current study as a way to increase the ATP concentration in P. polycephalum. The results from a series of experiments revealed that: (1) the crawling velocity of P. polycephalum increased as a result of its galvanotaxis, (2) the ATP concentration increased due to an increase in the amount of current, and number of times it was applied, and (3) the ATP concentration and the crawling velocity of P. polycephalum displayed a linear correlation, and the two were closely correlated. These results thus indicated that the ATP concentration in P. polycephalum changes in response to environmental pollution and that this concentration can be estimated based on the crawling velocity of P. polycephalum. Results suggested that this measurement could be used as an environmental indicator.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.134 No.11 （2014） 特集Ⅰ：電気関係学会関西連合大会　特集Ⅱ：国際会議ヒューマナイズド　システム2013

本誌掲載ページ: 1755-1759 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/134/11/134_1755/_article/-char/ja/