Station Biologique de Beau-Site, University of Poitiers, 25 Faubourg Saint-Cyprien, F-86000, Poitiers, France.
Planta. 1984 Jul;161(5):404-8. doi: 10.1007/BF00394570.
Glycine (1-50 mM) increases the rate of the dark-induced (scotonastic) movements and decreases the amplitude and the rate of the light-induced (photonastic) movements of the secondary pulvini of Mimosa pudica leaves. The uptake of glycine is accompanied by a long-lasting dose-dependent increase in the alkalinity of the bathing medium of the excised pulvini. The data are in agreement with a H(+)-glycine co-transport mechanism within the pulvinar cells. Fusicoccin (50 μM), known to promote H(+)-K(+) exchange, antagonizes the effects of glycine on the movements and the alkalization of the bathing medium of the excised pulvini. The present results argue for the hypothesis that proton fluxes mediate the scotonastic and photonastic pulvinar movements.
甘氨酸（1-50mM）增加含羞草小叶次级叶枕暗诱导（暗向性）运动的速度，并降低光诱导（光向性）运动的幅度和速度。甘氨酸的摄取伴随着在切离叶枕的浸浴介质中碱度的长时间、剂量依赖性增加。这些数据与叶枕细胞内 H(+)-甘氨酸共转运机制一致。已知能促进 H(+)-K(+)交换的 fusicoccin（50μM）拮抗甘氨酸对切离叶枕运动和浸浴介质碱化的作用。目前的结果支持质子流介导暗向性和光向性叶枕运动的假说。
