Movements of K+ during shutting and opening of the trap-lobes in aldrovanda vesiculosa

Toshio Iijima, Takao Sibaoka

    研究成果: Article査読

    24 被引用数 (Scopus)


    K+ movements during the shutting and subsequent opening of trap-lobes in Aldrovanda vesiculosa were measured using 86Rb as a tracer for K+. Immediately after the shutting, a large amount of 86Rb pre-loaded in the trap-lobes was detected in the hollow space inside the shut trap. This may indicate that much of the K+ in the active motor cells leaks out during the shutting, resulting in turgor loss in the cells. 86Rb(K+) uptake in the trap was active. During the opening process, enhanced 86Rb uptake was observed. The time course of this uptake was similar to that of the opening of the trap-lobes, and both courses were accelerated by IAA. Enhanced K+ uptake may restore the turgor in active motor cells. The quantity of K+ that moved during the shutting or opening was estimated as 20% of that in the active motor cells in the open state of the trap-lobes. The K+ efflux across the membranes of the active motor cells may be caused by a large increase in bulk flow triggered by an action potential, and was estimated as 6,200

    ジャーナルPlant and Cell Physiology
    出版ステータスPublished - 1983 1月

    ASJC Scopus subject areas

    • 生理学
    • 植物科学
    • 細胞生物学


    「Movements of K+ during shutting and opening of the trap-lobes in aldrovanda vesiculosa」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。