Laboratoire de Physiologie Végétale, 3, place de l'Université, CH-1211, Genéve 4, Switzerland.
Planta. 1979 Jan;144(3):235-40. doi: 10.1007/BF00388764.
The microelectrode technique was used to follow oscillations in membrane potential in mesophyll cells of spinach (Spinacia oleracea L.) during exposure do different photoperiodic conditions. Both high-frequency oscillations and circadian variations were observed. The circadian rhythm was imposed on the period of high-frequency oscillation during short days as well as in continuous light: The free-running period was 25.2 h. The average period of high-frequency oscillation increased from 7.64 min in the dark to 19.95 min in the light within several minutes after dark to light transition. This period length coincides with the established period length for oscillations in the redox potential in the chloroplast suspensions of spinach.
微电极技术被用于在菠菜（Spinacia oleracea L.）叶肉细胞中观察不同光周期条件下膜电位的振荡。观察到了高频振荡和昼夜节律变化。在短日和连续光照下，昼夜节律被强加在高频振荡的周期上：自由运行周期为 25.2 小时。在暗至光转变后的几分钟内，高频振荡的平均周期从黑暗中的 7.64 分钟增加到光中的 19.95 分钟。这个周期长度与菠菜叶绿体悬浮液中氧化还原电势振荡的已建立周期长度相吻合。
