塞马尼亚运动器官的质外体离子运输。

Section of Plant Biology, Cornell University, Ithaca, New York 14853.

Proc Natl Acad Sci U S A. 1981 May;78(5):2981-4. doi: 10.1073/pnas.78.5.2981.

Turgor-mediated leaf movements of the legume Samanea saman are associated with the migration of K(+) and Cl(-) between opposing sides of the motor organs (pulvini). We have investigated the pathway of this ion migration by localizing K(+) and Cl(-) within the secondary pulvinus at various times during leaf movements. Ion distributions in freeze-dried cryosections of pulvini were determined by scanning electron microscopy/x-ray microanalysis. The results indicate that the apoplast is a major pathway for the migration of K(+) and Cl(-) within the pulvinus.

豆科植物金合欢的膨压介导的叶片运动与运动器官（叶枕）两侧钾离子（K+）和氯离子（Cl-）的迁移有关。我们通过在叶片运动的不同时间点对次级叶枕内的 K+和 Cl-进行定位，研究了这种离子迁移的途径。通过扫描电子显微镜/ X 射线微量分析，确定了叶枕冷冻干燥冷冻切片中离子的分布。结果表明，质外体是叶枕内 K+和 Cl-迁移的主要途径。