Department of Biology, Yale University, New Haven, Connecticut 06520.
Plant Physiol. 1977 Feb;59(2):231-5. doi: 10.1104/pp.59.2.231.
Previous investigations with the electron microprobe reveal that the movements of Samanea leaflets are correlated with massive redistribution of K within the pulvinus. Evidence is now presented that Cl moves with K, whether plants are in white light or darkness, whether or not the amplitude of free running oscillations has damped, and whether or not the rhythm has been rephased by phytochrome photoconversion. The mid-extensor to mid-flexor ratio of K + Cl is correlated with leaflet angle under all conditions. Total Cl in both inner cortex and motor region is approximately 0.6 as high as K. The stoichiometry between Cl and the migratory fraction of K is close to, but not precisely 1:1 in all regions of the pulvinus, suggesting that other ions or systems may also be involved in the balancing of electrical charges.
先前的电子探针研究表明,合欢小叶的运动与膨压运动器中钾的大量重新分布有关。现在有证据表明,氯与钾一起移动,无论植物处于白光还是黑暗中,无论自由运行振荡的幅度是否减弱,以及无论节奏是否被光敏色素光转化重新调相。在所有条件下,钾+氯的中伸肌到中屈肌比值与小叶角度相关。内皮层和运动区的总氯含量约为钾含量的 0.6 倍。氯和钾迁移部分之间的化学计量比在膨压运动器的所有区域接近,但并不精确为 1:1,表明其他离子或系统也可能参与电荷平衡。